/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/chl/name-comparator-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 21:01:24,739 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 21:01:24,742 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 21:01:24,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 21:01:24,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 21:01:24,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 21:01:24,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 21:01:24,911 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-06 21:01:24,955 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 21:01:24,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 21:01:24,956 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 21:01:24,957 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 21:01:24,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 21:01:24,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 21:01:24,960 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 21:01:24,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 21:01:24,961 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 21:01:24,961 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 21:01:24,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 21:01:24,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 21:01:24,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 21:01:24,963 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 21:01:24,963 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 21:01:24,963 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 21:01:24,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 21:01:24,964 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 21:01:24,964 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 21:01:24,964 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 21:01:24,964 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 21:01:24,965 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 21:01:24,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 21:01:24,965 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 21:01:24,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 21:01:24,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:01:24,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 21:01:24,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 21:01:24,966 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 21:01:24,966 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 21:01:24,966 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 21:01:24,966 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 21:01:24,967 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 21:01:25,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 21:01:25,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 21:01:25,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 21:01:25,402 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 21:01:25,403 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 21:01:25,403 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl/name-comparator-subst.wvr.c [2021-10-06 21:01:25,481 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00031945c/c436b06e382f42029eb809f1667d3a6a/FLAG9a9e73614 [2021-10-06 21:01:26,184 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 21:01:26,184 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl/name-comparator-subst.wvr.c [2021-10-06 21:01:26,195 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00031945c/c436b06e382f42029eb809f1667d3a6a/FLAG9a9e73614 [2021-10-06 21:01:26,497 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00031945c/c436b06e382f42029eb809f1667d3a6a [2021-10-06 21:01:26,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 21:01:26,509 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 21:01:26,511 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 21:01:26,511 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 21:01:26,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 21:01:26,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:01:26" (1/1) ... [2021-10-06 21:01:26,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27497e8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:26, skipping insertion in model container [2021-10-06 21:01:26,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:01:26" (1/1) ... [2021-10-06 21:01:26,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 21:01:26,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 21:01:26,774 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl/name-comparator-subst.wvr.c[5166,5179] [2021-10-06 21:01:26,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:01:26,817 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-06 21:01:26,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 21:01:26,869 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl/name-comparator-subst.wvr.c[5166,5179] [2021-10-06 21:01:26,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:01:26,881 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 21:01:26,915 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl/name-comparator-subst.wvr.c[5166,5179] [2021-10-06 21:01:26,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:01:26,937 INFO L208 MainTranslator]: Completed translation [2021-10-06 21:01:26,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:26 WrapperNode [2021-10-06 21:01:26,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 21:01:26,939 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 21:01:26,939 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 21:01:26,940 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 21:01:26,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:26" (1/1) ... [2021-10-06 21:01:26,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:26" (1/1) ... [2021-10-06 21:01:26,997 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 21:01:26,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 21:01:26,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 21:01:26,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 21:01:27,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:26" (1/1) ... [2021-10-06 21:01:27,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:26" (1/1) ... [2021-10-06 21:01:27,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:26" (1/1) ... [2021-10-06 21:01:27,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:26" (1/1) ... [2021-10-06 21:01:27,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:26" (1/1) ... [2021-10-06 21:01:27,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:26" (1/1) ... [2021-10-06 21:01:27,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:26" (1/1) ... [2021-10-06 21:01:27,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 21:01:27,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 21:01:27,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 21:01:27,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 21:01:27,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:26" (1/1) ... [2021-10-06 21:01:27,097 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:01:27,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 21:01:27,123 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-06 21:01:27,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-06 21:01:27,191 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 21:01:27,191 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 21:01:27,192 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 21:01:27,192 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 21:01:27,192 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-06 21:01:27,192 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-06 21:01:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 21:01:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 21:01:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-06 21:01:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-06 21:01:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-06 21:01:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 21:01:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 21:01:27,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 21:01:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 21:01:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 21:01:27,197 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 21:01:29,293 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 21:01:29,294 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-10-06 21:01:29,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:01:29 BoogieIcfgContainer [2021-10-06 21:01:29,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 21:01:29,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 21:01:29,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 21:01:29,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 21:01:29,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 09:01:26" (1/3) ... [2021-10-06 21:01:29,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@539d96ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:01:29, skipping insertion in model container [2021-10-06 21:01:29,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:26" (2/3) ... [2021-10-06 21:01:29,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@539d96ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:01:29, skipping insertion in model container [2021-10-06 21:01:29,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:01:29" (3/3) ... [2021-10-06 21:01:29,306 INFO L111 eAbstractionObserver]: Analyzing ICFG name-comparator-subst.wvr.c [2021-10-06 21:01:29,312 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 21:01:29,312 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-10-06 21:01:29,313 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 21:01:29,351 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,351 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,352 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,352 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,352 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,352 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,353 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,353 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,353 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,353 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,353 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,354 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,354 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,354 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,354 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,355 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,355 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,355 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,355 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,355 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,356 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,356 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,356 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,356 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,357 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,357 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,357 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,357 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,358 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,358 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,358 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,358 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,358 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,359 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,359 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,359 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,359 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,359 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,360 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,360 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,360 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,360 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,361 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,361 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,361 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,361 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,362 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,362 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,362 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,363 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,363 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,363 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,363 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,364 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,364 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,364 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,364 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,364 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,365 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,365 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,365 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,366 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,366 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,366 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,366 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,366 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,367 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,367 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,367 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,367 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,368 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,368 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,368 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,368 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,369 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,369 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,369 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,369 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,369 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,370 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,370 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,370 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,370 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,370 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,371 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,371 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,371 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,371 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,372 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,372 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,372 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,372 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,373 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,373 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,374 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,374 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,374 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,374 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,375 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,375 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,375 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,375 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,375 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,376 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,376 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,376 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,376 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,377 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,377 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,377 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,377 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,377 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,377 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,378 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,378 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,378 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,378 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,378 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,379 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,379 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,379 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,379 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,380 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,380 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,380 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,380 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,380 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,380 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,380 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,381 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,381 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,382 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,382 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,382 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,382 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,382 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,382 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,383 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,386 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,387 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,387 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,387 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,387 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,387 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,388 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,388 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,388 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,388 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,388 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,389 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,389 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,389 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,391 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,392 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,392 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,392 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,392 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,393 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,393 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,393 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,393 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,393 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,394 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,394 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,394 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,394 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,396 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,396 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,397 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,397 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,397 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,397 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,397 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,398 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,398 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,398 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,398 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,398 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,399 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,399 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:29,404 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-06 21:01:29,452 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 21:01:29,460 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-06 21:01:29,460 INFO L340 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2021-10-06 21:01:29,480 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 21:01:29,493 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 182 places, 182 transitions, 388 flow [2021-10-06 21:01:29,496 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 182 places, 182 transitions, 388 flow [2021-10-06 21:01:29,499 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 182 places, 182 transitions, 388 flow [2021-10-06 21:01:29,575 INFO L129 PetriNetUnfolder]: 10/179 cut-off events. [2021-10-06 21:01:29,576 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-06 21:01:29,581 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 179 events. 10/179 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 175 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 135. Up to 2 conditions per place. [2021-10-06 21:01:29,586 INFO L116 LiptonReduction]: Number of co-enabled transitions 2160 [2021-10-06 21:01:53,509 INFO L131 LiptonReduction]: Checked pairs total: 2835 [2021-10-06 21:01:53,510 INFO L133 LiptonReduction]: Total number of compositions: 183 [2021-10-06 21:01:53,519 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 49 transitions, 122 flow [2021-10-06 21:01:53,576 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 750 states, 616 states have (on average 4.165584415584416) internal successors, (2566), 749 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:53,583 INFO L276 IsEmpty]: Start isEmpty. Operand has 750 states, 616 states have (on average 4.165584415584416) internal successors, (2566), 749 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:53,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-06 21:01:53,591 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:53,592 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-06 21:01:53,592 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:01:53,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:53,598 INFO L82 PathProgramCache]: Analyzing trace with hash 36123, now seen corresponding path program 1 times [2021-10-06 21:01:53,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:53,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375893854] [2021-10-06 21:01:53,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:01:53,612 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:53,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:53,616 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:53,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-06 21:01:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:53,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:01:53,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:53,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:53,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:53,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:53,798 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:53,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375893854] [2021-10-06 21:01:53,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1375893854] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:53,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:53,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:01:53,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307830227] [2021-10-06 21:01:53,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:01:53,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:53,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:01:53,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:01:53,827 INFO L87 Difference]: Start difference. First operand has 750 states, 616 states have (on average 4.165584415584416) internal successors, (2566), 749 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:54,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:54,032 INFO L93 Difference]: Finished difference Result 753 states and 2571 transitions. [2021-10-06 21:01:54,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:01:54,034 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-06 21:01:54,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:54,103 INFO L225 Difference]: With dead ends: 753 [2021-10-06 21:01:54,104 INFO L226 Difference]: Without dead ends: 753 [2021-10-06 21:01:54,106 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:01:54,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2021-10-06 21:01:54,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 751. [2021-10-06 21:01:54,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 618 states have (on average 4.160194174757281) internal successors, (2571), 750 states have internal predecessors, (2571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:54,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 2571 transitions. [2021-10-06 21:01:54,271 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 2571 transitions. Word has length 2 [2021-10-06 21:01:54,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:54,271 INFO L470 AbstractCegarLoop]: Abstraction has 751 states and 2571 transitions. [2021-10-06 21:01:54,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:54,271 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 2571 transitions. [2021-10-06 21:01:54,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-06 21:01:54,272 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:54,272 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-06 21:01:54,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:54,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:01:54,473 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:01:54,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:54,475 INFO L82 PathProgramCache]: Analyzing trace with hash 36016, now seen corresponding path program 1 times [2021-10-06 21:01:54,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:54,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648621851] [2021-10-06 21:01:54,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:01:54,477 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:54,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:54,478 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:54,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-06 21:01:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:54,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:01:54,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:54,885 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-06 21:01:54,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-06 21:01:54,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:54,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:55,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:55,038 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:55,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648621851] [2021-10-06 21:01:55,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1648621851] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:55,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:55,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:01:55,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234329790] [2021-10-06 21:01:55,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:01:55,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:55,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:01:55,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:01:55,042 INFO L87 Difference]: Start difference. First operand 751 states and 2571 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:55,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:55,381 INFO L93 Difference]: Finished difference Result 753 states and 2569 transitions. [2021-10-06 21:01:55,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:01:55,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-06 21:01:55,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:55,395 INFO L225 Difference]: With dead ends: 753 [2021-10-06 21:01:55,396 INFO L226 Difference]: Without dead ends: 753 [2021-10-06 21:01:55,396 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:01:55,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2021-10-06 21:01:55,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 751. [2021-10-06 21:01:55,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 618 states have (on average 4.156957928802589) internal successors, (2569), 750 states have internal predecessors, (2569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:55,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 2569 transitions. [2021-10-06 21:01:55,433 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 2569 transitions. Word has length 2 [2021-10-06 21:01:55,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:55,433 INFO L470 AbstractCegarLoop]: Abstraction has 751 states and 2569 transitions. [2021-10-06 21:01:55,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:55,434 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 2569 transitions. [2021-10-06 21:01:55,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-06 21:01:55,434 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:55,434 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-06 21:01:55,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:55,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:01:55,647 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:01:55,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:55,648 INFO L82 PathProgramCache]: Analyzing trace with hash 36017, now seen corresponding path program 1 times [2021-10-06 21:01:55,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:55,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850251588] [2021-10-06 21:01:55,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:01:55,650 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:55,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:55,652 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:55,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-06 21:01:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:55,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:01:55,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:55,928 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-06 21:01:55,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 70 [2021-10-06 21:01:56,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:56,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:56,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:56,538 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:56,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850251588] [2021-10-06 21:01:56,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1850251588] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:01:56,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:01:56,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:01:56,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63409395] [2021-10-06 21:01:56,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:01:56,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:56,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:01:56,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:01:56,542 INFO L87 Difference]: Start difference. First operand 751 states and 2569 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:56,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:56,654 INFO L93 Difference]: Finished difference Result 750 states and 2566 transitions. [2021-10-06 21:01:56,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:01:56,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-06 21:01:56,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:56,663 INFO L225 Difference]: With dead ends: 750 [2021-10-06 21:01:56,664 INFO L226 Difference]: Without dead ends: 750 [2021-10-06 21:01:56,664 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:01:56,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2021-10-06 21:01:56,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 750. [2021-10-06 21:01:56,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 618 states have (on average 4.15210355987055) internal successors, (2566), 749 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:56,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 2566 transitions. [2021-10-06 21:01:56,725 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 2566 transitions. Word has length 2 [2021-10-06 21:01:56,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:56,725 INFO L470 AbstractCegarLoop]: Abstraction has 750 states and 2566 transitions. [2021-10-06 21:01:56,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:56,726 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 2566 transitions. [2021-10-06 21:01:56,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-06 21:01:56,726 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:56,726 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-06 21:01:56,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:56,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:01:56,939 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:01:56,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:56,941 INFO L82 PathProgramCache]: Analyzing trace with hash 34770011, now seen corresponding path program 1 times [2021-10-06 21:01:56,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:56,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922766384] [2021-10-06 21:01:56,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:01:56,942 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:56,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:56,943 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:56,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-06 21:01:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:57,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:01:57,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:57,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:57,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:57,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:57,144 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:57,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922766384] [2021-10-06 21:01:57,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922766384] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:01:57,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:01:57,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-06 21:01:57,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468922959] [2021-10-06 21:01:57,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:01:57,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:57,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:01:57,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:01:57,148 INFO L87 Difference]: Start difference. First operand 750 states and 2566 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:57,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:57,284 INFO L93 Difference]: Finished difference Result 752 states and 2568 transitions. [2021-10-06 21:01:57,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:01:57,286 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-06 21:01:57,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:57,293 INFO L225 Difference]: With dead ends: 752 [2021-10-06 21:01:57,293 INFO L226 Difference]: Without dead ends: 752 [2021-10-06 21:01:57,294 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 86.4ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:01:57,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-10-06 21:01:57,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 751. [2021-10-06 21:01:57,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 619 states have (on average 4.148626817447496) internal successors, (2568), 750 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:57,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 2568 transitions. [2021-10-06 21:01:57,324 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 2568 transitions. Word has length 4 [2021-10-06 21:01:57,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:57,324 INFO L470 AbstractCegarLoop]: Abstraction has 751 states and 2568 transitions. [2021-10-06 21:01:57,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:57,325 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 2568 transitions. [2021-10-06 21:01:57,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-06 21:01:57,325 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:57,326 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-06 21:01:57,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:57,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:01:57,537 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:01:57,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:57,539 INFO L82 PathProgramCache]: Analyzing trace with hash 34769904, now seen corresponding path program 1 times [2021-10-06 21:01:57,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:57,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722295001] [2021-10-06 21:01:57,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:01:57,540 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:57,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:57,541 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:57,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-06 21:01:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:57,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:01:57,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:57,854 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-06 21:01:57,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-06 21:01:57,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:57,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:58,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:58,406 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:58,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1722295001] [2021-10-06 21:01:58,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1722295001] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:01:58,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:01:58,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-06 21:01:58,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495745831] [2021-10-06 21:01:58,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:01:58,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:58,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:01:58,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:01:58,409 INFO L87 Difference]: Start difference. First operand 751 states and 2568 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:59,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:59,042 INFO L93 Difference]: Finished difference Result 751 states and 2567 transitions. [2021-10-06 21:01:59,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 21:01:59,043 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-06 21:01:59,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:59,050 INFO L225 Difference]: With dead ends: 751 [2021-10-06 21:01:59,051 INFO L226 Difference]: Without dead ends: 751 [2021-10-06 21:01:59,051 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 375.6ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:01:59,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2021-10-06 21:01:59,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 751. [2021-10-06 21:01:59,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 619 states have (on average 4.147011308562197) internal successors, (2567), 750 states have internal predecessors, (2567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:59,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 2567 transitions. [2021-10-06 21:01:59,081 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 2567 transitions. Word has length 4 [2021-10-06 21:01:59,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:59,082 INFO L470 AbstractCegarLoop]: Abstraction has 751 states and 2567 transitions. [2021-10-06 21:01:59,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:59,082 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 2567 transitions. [2021-10-06 21:01:59,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:01:59,083 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:59,083 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1] [2021-10-06 21:01:59,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:59,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:01:59,295 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:01:59,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:59,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1077872085, now seen corresponding path program 2 times [2021-10-06 21:01:59,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:59,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757431884] [2021-10-06 21:01:59,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:01:59,298 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:59,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:59,299 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:01:59,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-06 21:01:59,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:01:59,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:59,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:01:59,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:59,599 INFO L354 Elim1Store]: treesize reduction 358, result has 15.4 percent of original size [2021-10-06 21:01:59,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 9 case distinctions, treesize of input 328 treesize of output 355 [2021-10-06 21:02:08,964 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:08,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:08,988 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:08,989 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:08,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757431884] [2021-10-06 21:02:08,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757431884] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:08,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:08,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:02:08,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938086433] [2021-10-06 21:02:08,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:02:08,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:09,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:02:09,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:02:09,003 INFO L87 Difference]: Start difference. First operand 751 states and 2567 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:09,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:09,229 INFO L93 Difference]: Finished difference Result 625 states and 2066 transitions. [2021-10-06 21:02:09,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:02:09,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 21:02:09,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:09,237 INFO L225 Difference]: With dead ends: 625 [2021-10-06 21:02:09,237 INFO L226 Difference]: Without dead ends: 625 [2021-10-06 21:02:09,238 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:02:09,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2021-10-06 21:02:09,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 625. [2021-10-06 21:02:09,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 521 states have (on average 3.965451055662188) internal successors, (2066), 624 states have internal predecessors, (2066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:09,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 2066 transitions. [2021-10-06 21:02:09,263 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 2066 transitions. Word has length 5 [2021-10-06 21:02:09,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:09,264 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 2066 transitions. [2021-10-06 21:02:09,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:09,265 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 2066 transitions. [2021-10-06 21:02:09,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:02:09,266 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:09,266 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1] [2021-10-06 21:02:09,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:09,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:09,479 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:09,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:09,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1077872087, now seen corresponding path program 1 times [2021-10-06 21:02:09,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:09,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550404231] [2021-10-06 21:02:09,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:09,484 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:09,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:09,485 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:09,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-06 21:02:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:09,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:02:09,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:09,855 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-06 21:02:09,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 61 treesize of output 99 [2021-10-06 21:02:09,864 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-06 21:02:09,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 186 treesize of output 182 [2021-10-06 21:02:13,414 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:13,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:13,484 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:13,485 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:13,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550404231] [2021-10-06 21:02:13,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550404231] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:13,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:13,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:02:13,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490363669] [2021-10-06 21:02:13,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:02:13,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:13,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:02:13,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:02:13,490 INFO L87 Difference]: Start difference. First operand 625 states and 2066 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:13,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:13,636 INFO L93 Difference]: Finished difference Result 499 states and 1565 transitions. [2021-10-06 21:02:13,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:02:13,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 21:02:13,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:13,644 INFO L225 Difference]: With dead ends: 499 [2021-10-06 21:02:13,644 INFO L226 Difference]: Without dead ends: 499 [2021-10-06 21:02:13,645 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:02:13,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2021-10-06 21:02:13,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 499. [2021-10-06 21:02:13,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 423 states have (on average 3.699763593380615) internal successors, (1565), 498 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:13,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 1565 transitions. [2021-10-06 21:02:13,665 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 1565 transitions. Word has length 5 [2021-10-06 21:02:13,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:13,666 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 1565 transitions. [2021-10-06 21:02:13,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:13,666 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 1565 transitions. [2021-10-06 21:02:13,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:02:13,667 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:13,667 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1] [2021-10-06 21:02:13,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:13,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:13,879 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:13,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:13,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1077871978, now seen corresponding path program 2 times [2021-10-06 21:02:13,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:13,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75926844] [2021-10-06 21:02:13,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:02:13,882 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:13,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:13,883 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:13,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-06 21:02:13,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:02:13,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:13,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:02:13,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:13,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-06 21:02:13,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-06 21:02:14,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-06 21:02:14,192 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-06 21:02:14,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-06 21:02:14,329 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:14,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:14,815 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:14,816 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:14,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [75926844] [2021-10-06 21:02:14,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [75926844] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:14,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:14,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-06 21:02:14,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817111680] [2021-10-06 21:02:14,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:02:14,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:14,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:02:14,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:02:14,818 INFO L87 Difference]: Start difference. First operand 499 states and 1565 transitions. Second operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:15,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:15,023 INFO L93 Difference]: Finished difference Result 498 states and 1563 transitions. [2021-10-06 21:02:15,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:02:15,024 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 21:02:15,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:15,029 INFO L225 Difference]: With dead ends: 498 [2021-10-06 21:02:15,029 INFO L226 Difference]: Without dead ends: 498 [2021-10-06 21:02:15,030 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 421.8ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:02:15,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2021-10-06 21:02:15,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 498. [2021-10-06 21:02:15,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 423 states have (on average 3.6950354609929077) internal successors, (1563), 497 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:15,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1563 transitions. [2021-10-06 21:02:15,048 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1563 transitions. Word has length 5 [2021-10-06 21:02:15,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:15,049 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 1563 transitions. [2021-10-06 21:02:15,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:15,049 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1563 transitions. [2021-10-06 21:02:15,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 21:02:15,049 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:15,050 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2021-10-06 21:02:15,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:15,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:15,264 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:15,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:15,265 INFO L82 PathProgramCache]: Analyzing trace with hash 747985577, now seen corresponding path program 1 times [2021-10-06 21:02:15,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:15,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [86390906] [2021-10-06 21:02:15,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:15,266 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:15,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:15,267 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:15,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-06 21:02:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:15,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:02:15,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:15,632 INFO L354 Elim1Store]: treesize reduction 225, result has 21.3 percent of original size [2021-10-06 21:02:15,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 86 [2021-10-06 21:02:15,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 111 [2021-10-06 21:02:21,179 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:21,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:21,255 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:21,255 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:21,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [86390906] [2021-10-06 21:02:21,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [86390906] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:21,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:21,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:02:21,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754172787] [2021-10-06 21:02:21,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:02:21,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:21,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:02:21,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:02:21,257 INFO L87 Difference]: Start difference. First operand 498 states and 1563 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:21,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:21,370 INFO L93 Difference]: Finished difference Result 468 states and 1478 transitions. [2021-10-06 21:02:21,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:02:21,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-06 21:02:21,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:21,376 INFO L225 Difference]: With dead ends: 468 [2021-10-06 21:02:21,376 INFO L226 Difference]: Without dead ends: 468 [2021-10-06 21:02:21,376 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:02:21,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-10-06 21:02:21,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 468. [2021-10-06 21:02:21,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 405 states have (on average 3.6493827160493826) internal successors, (1478), 467 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:21,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1478 transitions. [2021-10-06 21:02:21,393 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1478 transitions. Word has length 7 [2021-10-06 21:02:21,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:21,393 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 1478 transitions. [2021-10-06 21:02:21,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:21,394 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1478 transitions. [2021-10-06 21:02:21,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 21:02:21,394 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:21,394 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2021-10-06 21:02:21,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:21,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:21,607 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:21,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:21,607 INFO L82 PathProgramCache]: Analyzing trace with hash 747985575, now seen corresponding path program 1 times [2021-10-06 21:02:21,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:21,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497684933] [2021-10-06 21:02:21,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:21,609 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:21,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:21,610 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:21,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-06 21:02:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:21,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:02:21,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:21,930 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-06 21:02:21,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 101 treesize of output 142 [2021-10-06 21:02:28,830 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:28,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:28,854 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:28,855 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:28,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497684933] [2021-10-06 21:02:28,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1497684933] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:28,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:28,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:02:28,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575937430] [2021-10-06 21:02:28,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:02:28,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:28,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:02:28,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:02:28,859 INFO L87 Difference]: Start difference. First operand 468 states and 1478 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:28,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:28,970 INFO L93 Difference]: Finished difference Result 438 states and 1393 transitions. [2021-10-06 21:02:28,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:02:28,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-06 21:02:28,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:28,976 INFO L225 Difference]: With dead ends: 438 [2021-10-06 21:02:28,976 INFO L226 Difference]: Without dead ends: 438 [2021-10-06 21:02:28,976 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:02:28,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-10-06 21:02:28,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 438. [2021-10-06 21:02:28,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 387 states have (on average 3.599483204134367) internal successors, (1393), 437 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:28,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 1393 transitions. [2021-10-06 21:02:28,991 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 1393 transitions. Word has length 7 [2021-10-06 21:02:28,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:28,993 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 1393 transitions. [2021-10-06 21:02:28,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:28,994 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 1393 transitions. [2021-10-06 21:02:28,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-06 21:02:28,994 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:28,994 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2021-10-06 21:02:29,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:29,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:29,208 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:29,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:29,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1712711748, now seen corresponding path program 1 times [2021-10-06 21:02:29,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:29,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323269652] [2021-10-06 21:02:29,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:29,211 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:29,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:29,212 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:29,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-06 21:02:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:29,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:02:29,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:29,550 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-06 21:02:29,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-06 21:02:29,645 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:29,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:29,835 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:29,835 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:29,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323269652] [2021-10-06 21:02:29,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1323269652] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:29,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:29,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-06 21:02:29,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441819268] [2021-10-06 21:02:29,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:02:29,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:29,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:02:29,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:02:29,837 INFO L87 Difference]: Start difference. First operand 438 states and 1393 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:30,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:30,250 INFO L93 Difference]: Finished difference Result 1014 states and 3211 transitions. [2021-10-06 21:02:30,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:02:30,251 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-06 21:02:30,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:30,261 INFO L225 Difference]: With dead ends: 1014 [2021-10-06 21:02:30,261 INFO L226 Difference]: Without dead ends: 1014 [2021-10-06 21:02:30,261 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 192.6ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:02:30,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2021-10-06 21:02:30,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 582. [2021-10-06 21:02:30,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 531 states have (on average 4.065913370998117) internal successors, (2159), 581 states have internal predecessors, (2159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:30,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 2159 transitions. [2021-10-06 21:02:30,285 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 2159 transitions. Word has length 8 [2021-10-06 21:02:30,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:30,286 INFO L470 AbstractCegarLoop]: Abstraction has 582 states and 2159 transitions. [2021-10-06 21:02:30,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:30,286 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 2159 transitions. [2021-10-06 21:02:30,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-06 21:02:30,287 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:30,287 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2021-10-06 21:02:30,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:30,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:30,500 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:30,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:30,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1712711749, now seen corresponding path program 1 times [2021-10-06 21:02:30,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:30,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271581271] [2021-10-06 21:02:30,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:30,503 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:30,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:30,504 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:30,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-06 21:02:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:30,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:02:30,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:30,865 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-06 21:02:30,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 70 [2021-10-06 21:02:31,336 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:31,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:31,363 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:31,363 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:31,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271581271] [2021-10-06 21:02:31,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271581271] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:31,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:31,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-06 21:02:31,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246029123] [2021-10-06 21:02:31,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:02:31,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:31,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:02:31,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:02:31,365 INFO L87 Difference]: Start difference. First operand 582 states and 2159 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:31,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:31,457 INFO L93 Difference]: Finished difference Result 356 states and 1220 transitions. [2021-10-06 21:02:31,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:02:31,458 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-06 21:02:31,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:31,461 INFO L225 Difference]: With dead ends: 356 [2021-10-06 21:02:31,461 INFO L226 Difference]: Without dead ends: 356 [2021-10-06 21:02:31,461 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:02:31,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-10-06 21:02:31,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2021-10-06 21:02:31,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 336 states have (on average 3.630952380952381) internal successors, (1220), 355 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:31,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 1220 transitions. [2021-10-06 21:02:31,477 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 1220 transitions. Word has length 8 [2021-10-06 21:02:31,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:31,478 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 1220 transitions. [2021-10-06 21:02:31,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:31,478 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 1220 transitions. [2021-10-06 21:02:31,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-06 21:02:31,479 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:31,479 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:31,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:31,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:31,691 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:31,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:31,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1554629510, now seen corresponding path program 1 times [2021-10-06 21:02:31,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:31,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1433306474] [2021-10-06 21:02:31,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:31,694 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:31,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:31,694 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:31,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-06 21:02:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:31,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:02:31,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:32,057 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-06 21:02:32,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 70 [2021-10-06 21:02:32,507 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:32,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:32,531 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:32,531 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:32,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1433306474] [2021-10-06 21:02:32,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1433306474] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:32,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:32,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:02:32,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101185280] [2021-10-06 21:02:32,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:02:32,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:32,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:02:32,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:02:32,533 INFO L87 Difference]: Start difference. First operand 356 states and 1220 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:32,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:32,591 INFO L93 Difference]: Finished difference Result 328 states and 1132 transitions. [2021-10-06 21:02:32,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:02:32,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-06 21:02:32,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:32,595 INFO L225 Difference]: With dead ends: 328 [2021-10-06 21:02:32,595 INFO L226 Difference]: Without dead ends: 328 [2021-10-06 21:02:32,596 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:02:32,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-10-06 21:02:32,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2021-10-06 21:02:32,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 314 states have (on average 3.605095541401274) internal successors, (1132), 327 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:32,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 1132 transitions. [2021-10-06 21:02:32,606 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 1132 transitions. Word has length 9 [2021-10-06 21:02:32,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:32,607 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 1132 transitions. [2021-10-06 21:02:32,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:32,607 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 1132 transitions. [2021-10-06 21:02:32,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-06 21:02:32,608 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:32,608 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:32,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:32,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:32,821 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:32,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:32,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1554629508, now seen corresponding path program 1 times [2021-10-06 21:02:32,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:32,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1545288128] [2021-10-06 21:02:32,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:32,823 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:32,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:32,825 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:32,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-06 21:02:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:32,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:02:32,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:33,155 INFO L354 Elim1Store]: treesize reduction 247, result has 16.6 percent of original size [2021-10-06 21:02:33,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 52 treesize of output 84 [2021-10-06 21:02:33,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 395 treesize of output 387 [2021-10-06 21:02:34,146 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:34,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:34,241 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:34,241 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:34,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1545288128] [2021-10-06 21:02:34,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1545288128] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:34,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:34,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:02:34,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45081732] [2021-10-06 21:02:34,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:02:34,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:34,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:02:34,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:02:34,243 INFO L87 Difference]: Start difference. First operand 328 states and 1132 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:34,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:34,322 INFO L93 Difference]: Finished difference Result 300 states and 1044 transitions. [2021-10-06 21:02:34,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:02:34,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-06 21:02:34,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:34,326 INFO L225 Difference]: With dead ends: 300 [2021-10-06 21:02:34,326 INFO L226 Difference]: Without dead ends: 300 [2021-10-06 21:02:34,327 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:02:34,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-10-06 21:02:34,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2021-10-06 21:02:34,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 292 states have (on average 3.5753424657534247) internal successors, (1044), 299 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:34,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 1044 transitions. [2021-10-06 21:02:34,337 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 1044 transitions. Word has length 9 [2021-10-06 21:02:34,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:34,337 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 1044 transitions. [2021-10-06 21:02:34,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:34,337 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 1044 transitions. [2021-10-06 21:02:34,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-06 21:02:34,338 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:34,338 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:34,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:34,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:34,551 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:34,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:34,552 INFO L82 PathProgramCache]: Analyzing trace with hash 948869771, now seen corresponding path program 1 times [2021-10-06 21:02:34,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:34,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1459981083] [2021-10-06 21:02:34,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:34,554 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:34,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:34,555 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:34,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-06 21:02:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:34,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:02:34,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:34,910 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-06 21:02:34,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-06 21:02:35,021 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:35,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:35,222 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:35,223 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:35,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1459981083] [2021-10-06 21:02:35,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1459981083] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:35,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:35,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-06 21:02:35,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839872115] [2021-10-06 21:02:35,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:02:35,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:35,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:02:35,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:02:35,225 INFO L87 Difference]: Start difference. First operand 300 states and 1044 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:35,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:35,503 INFO L93 Difference]: Finished difference Result 592 states and 2072 transitions. [2021-10-06 21:02:35,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:02:35,504 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-06 21:02:35,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:35,508 INFO L225 Difference]: With dead ends: 592 [2021-10-06 21:02:35,508 INFO L226 Difference]: Without dead ends: 592 [2021-10-06 21:02:35,509 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 185.3ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:02:35,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-10-06 21:02:35,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 436. [2021-10-06 21:02:35,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 428 states have (on average 3.9158878504672896) internal successors, (1676), 435 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:35,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1676 transitions. [2021-10-06 21:02:35,524 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1676 transitions. Word has length 10 [2021-10-06 21:02:35,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:35,525 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 1676 transitions. [2021-10-06 21:02:35,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:35,525 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1676 transitions. [2021-10-06 21:02:35,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-06 21:02:35,526 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:35,526 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2021-10-06 21:02:35,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:35,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:35,739 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:35,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:35,739 INFO L82 PathProgramCache]: Analyzing trace with hash 943547908, now seen corresponding path program 1 times [2021-10-06 21:02:35,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:35,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385692314] [2021-10-06 21:02:35,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:35,741 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:35,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:35,743 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:35,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-06 21:02:35,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:35,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:02:35,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:36,121 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-06 21:02:36,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-06 21:02:36,264 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:36,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:36,715 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:36,715 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:36,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1385692314] [2021-10-06 21:02:36,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1385692314] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:36,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:36,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:02:36,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234017233] [2021-10-06 21:02:36,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:02:36,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:36,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:02:36,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:02:36,718 INFO L87 Difference]: Start difference. First operand 436 states and 1676 transitions. Second operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:37,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:37,245 INFO L93 Difference]: Finished difference Result 858 states and 2998 transitions. [2021-10-06 21:02:37,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:02:37,246 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-06 21:02:37,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:37,254 INFO L225 Difference]: With dead ends: 858 [2021-10-06 21:02:37,254 INFO L226 Difference]: Without dead ends: 858 [2021-10-06 21:02:37,255 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 449.3ms TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:02:37,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2021-10-06 21:02:37,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 498. [2021-10-06 21:02:37,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 490 states have (on average 4.012244897959183) internal successors, (1966), 497 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:37,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1966 transitions. [2021-10-06 21:02:37,275 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1966 transitions. Word has length 10 [2021-10-06 21:02:37,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:37,275 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 1966 transitions. [2021-10-06 21:02:37,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:37,275 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1966 transitions. [2021-10-06 21:02:37,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-06 21:02:37,276 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:37,276 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2021-10-06 21:02:37,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:37,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:37,489 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:37,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:37,490 INFO L82 PathProgramCache]: Analyzing trace with hash -814784910, now seen corresponding path program 2 times [2021-10-06 21:02:37,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:37,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540443417] [2021-10-06 21:02:37,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:02:37,492 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:37,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:37,493 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:37,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-06 21:02:37,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:02:37,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:37,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:02:37,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:37,739 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:37,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:37,815 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:37,815 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:37,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540443417] [2021-10-06 21:02:37,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540443417] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:37,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:37,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-06 21:02:37,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856403931] [2021-10-06 21:02:37,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:02:37,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:37,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:02:37,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:02:37,818 INFO L87 Difference]: Start difference. First operand 498 states and 1966 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:37,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:37,923 INFO L93 Difference]: Finished difference Result 796 states and 2708 transitions. [2021-10-06 21:02:37,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:02:37,923 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-06 21:02:37,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:37,930 INFO L225 Difference]: With dead ends: 796 [2021-10-06 21:02:37,930 INFO L226 Difference]: Without dead ends: 796 [2021-10-06 21:02:37,930 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.9ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:02:37,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2021-10-06 21:02:37,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 436. [2021-10-06 21:02:37,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 432 states have (on average 3.8796296296296298) internal successors, (1676), 435 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:37,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1676 transitions. [2021-10-06 21:02:37,948 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1676 transitions. Word has length 11 [2021-10-06 21:02:37,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:37,948 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 1676 transitions. [2021-10-06 21:02:37,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:37,948 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1676 transitions. [2021-10-06 21:02:37,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-06 21:02:37,949 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:37,949 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:37,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:38,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:38,163 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:38,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:38,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1330814635, now seen corresponding path program 1 times [2021-10-06 21:02:38,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:38,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [669645432] [2021-10-06 21:02:38,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:38,171 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:38,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:38,172 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:38,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-06 21:02:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:38,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:02:38,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:38,604 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-06 21:02:38,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-06 21:02:38,756 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:38,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:39,223 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:39,224 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:39,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [669645432] [2021-10-06 21:02:39,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [669645432] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:39,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:39,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:02:39,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919385711] [2021-10-06 21:02:39,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:02:39,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:39,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:02:39,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:02:39,226 INFO L87 Difference]: Start difference. First operand 436 states and 1676 transitions. Second operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:39,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:39,731 INFO L93 Difference]: Finished difference Result 738 states and 2586 transitions. [2021-10-06 21:02:39,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:02:39,732 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-06 21:02:39,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:39,738 INFO L225 Difference]: With dead ends: 738 [2021-10-06 21:02:39,738 INFO L226 Difference]: Without dead ends: 738 [2021-10-06 21:02:39,739 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 459.3ms TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:02:39,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2021-10-06 21:02:39,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 504. [2021-10-06 21:02:39,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 500 states have (on average 3.984) internal successors, (1992), 503 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:39,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1992 transitions. [2021-10-06 21:02:39,758 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1992 transitions. Word has length 12 [2021-10-06 21:02:39,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:39,759 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 1992 transitions. [2021-10-06 21:02:39,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:39,759 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1992 transitions. [2021-10-06 21:02:39,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-06 21:02:39,760 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:39,760 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:39,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:39,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:39,974 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:39,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:39,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1336255120, now seen corresponding path program 1 times [2021-10-06 21:02:39,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:39,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306169763] [2021-10-06 21:02:39,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:39,977 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:39,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:39,978 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:39,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-06 21:02:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:40,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:02:40,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:40,355 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-06 21:02:40,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-06 21:02:40,474 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:40,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:40,719 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:40,719 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:40,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306169763] [2021-10-06 21:02:40,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306169763] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:40,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:40,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-06 21:02:40,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430033725] [2021-10-06 21:02:40,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:02:40,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:40,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:02:40,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:02:40,722 INFO L87 Difference]: Start difference. First operand 504 states and 1992 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:41,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:41,003 INFO L93 Difference]: Finished difference Result 908 states and 3636 transitions. [2021-10-06 21:02:41,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:02:41,004 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-06 21:02:41,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:41,016 INFO L225 Difference]: With dead ends: 908 [2021-10-06 21:02:41,016 INFO L226 Difference]: Without dead ends: 908 [2021-10-06 21:02:41,016 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 208.0ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:02:41,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2021-10-06 21:02:41,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 704. [2021-10-06 21:02:41,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 700 states have (on average 4.3028571428571425) internal successors, (3012), 703 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:41,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 3012 transitions. [2021-10-06 21:02:41,040 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 3012 transitions. Word has length 12 [2021-10-06 21:02:41,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:41,041 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 3012 transitions. [2021-10-06 21:02:41,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:41,041 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 3012 transitions. [2021-10-06 21:02:41,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 21:02:41,042 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:41,042 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:41,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:41,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:41,255 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:41,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:41,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1694418292, now seen corresponding path program 2 times [2021-10-06 21:02:41,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:41,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177387778] [2021-10-06 21:02:41,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:02:41,258 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:41,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:41,258 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:41,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-06 21:02:41,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:02:41,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:41,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-06 21:02:41,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:41,712 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-06 21:02:41,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-06 21:02:41,900 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:41,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:42,344 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:42,344 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:42,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177387778] [2021-10-06 21:02:42,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1177387778] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:42,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:42,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2021-10-06 21:02:42,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394499402] [2021-10-06 21:02:42,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:02:42,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:42,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:02:42,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:02:42,347 INFO L87 Difference]: Start difference. First operand 704 states and 3012 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:42,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:42,970 INFO L93 Difference]: Finished difference Result 938 states and 3478 transitions. [2021-10-06 21:02:42,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-06 21:02:42,971 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-06 21:02:42,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:42,978 INFO L225 Difference]: With dead ends: 938 [2021-10-06 21:02:42,978 INFO L226 Difference]: Without dead ends: 938 [2021-10-06 21:02:42,978 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 476.9ms TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:02:42,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2021-10-06 21:02:42,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 608. [2021-10-06 21:02:42,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 606 states have (on average 4.184818481848184) internal successors, (2536), 607 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:43,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 2536 transitions. [2021-10-06 21:02:43,002 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 2536 transitions. Word has length 13 [2021-10-06 21:02:43,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:43,003 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 2536 transitions. [2021-10-06 21:02:43,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:43,003 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 2536 transitions. [2021-10-06 21:02:43,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 21:02:43,004 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:43,004 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:43,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:43,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:43,218 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:43,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:43,219 INFO L82 PathProgramCache]: Analyzing trace with hash -54017232, now seen corresponding path program 1 times [2021-10-06 21:02:43,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:43,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [705968074] [2021-10-06 21:02:43,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:43,220 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:43,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:43,222 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:43,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-06 21:02:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:43,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:02:43,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:43,651 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-06 21:02:43,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-06 21:02:43,816 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:43,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:44,317 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:44,317 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:44,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [705968074] [2021-10-06 21:02:44,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [705968074] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:44,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:44,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:02:44,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031677622] [2021-10-06 21:02:44,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:02:44,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:44,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:02:44,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:02:44,319 INFO L87 Difference]: Start difference. First operand 608 states and 2536 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:44,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:44,731 INFO L93 Difference]: Finished difference Result 958 states and 3746 transitions. [2021-10-06 21:02:44,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:02:44,732 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 21:02:44,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:44,739 INFO L225 Difference]: With dead ends: 958 [2021-10-06 21:02:44,739 INFO L226 Difference]: Without dead ends: 958 [2021-10-06 21:02:44,739 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 459.4ms TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:02:44,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2021-10-06 21:02:44,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 694. [2021-10-06 21:02:44,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 692 states have (on average 4.286127167630058) internal successors, (2966), 693 states have internal predecessors, (2966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:44,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 2966 transitions. [2021-10-06 21:02:44,764 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 2966 transitions. Word has length 14 [2021-10-06 21:02:44,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:44,764 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 2966 transitions. [2021-10-06 21:02:44,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:44,765 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 2966 transitions. [2021-10-06 21:02:44,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:02:44,766 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:44,766 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:44,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:44,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:44,980 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:44,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:44,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1674533131, now seen corresponding path program 2 times [2021-10-06 21:02:44,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:44,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616565207] [2021-10-06 21:02:44,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:02:44,982 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:44,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:44,983 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:44,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-06 21:02:45,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:02:45,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:45,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:02:45,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:45,298 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:45,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:45,382 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:45,382 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:45,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616565207] [2021-10-06 21:02:45,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [616565207] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:45,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:45,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-06 21:02:45,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805450225] [2021-10-06 21:02:45,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:02:45,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:45,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:02:45,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:02:45,384 INFO L87 Difference]: Start difference. First operand 694 states and 2966 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:45,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:45,523 INFO L93 Difference]: Finished difference Result 872 states and 3316 transitions. [2021-10-06 21:02:45,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:02:45,524 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 21:02:45,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:45,528 INFO L225 Difference]: With dead ends: 872 [2021-10-06 21:02:45,528 INFO L226 Difference]: Without dead ends: 872 [2021-10-06 21:02:45,529 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.0ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:02:45,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2021-10-06 21:02:45,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 608. [2021-10-06 21:02:45,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 607 states have (on average 4.177924217462932) internal successors, (2536), 607 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:45,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 2536 transitions. [2021-10-06 21:02:45,551 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 2536 transitions. Word has length 15 [2021-10-06 21:02:45,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:45,552 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 2536 transitions. [2021-10-06 21:02:45,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:45,552 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 2536 transitions. [2021-10-06 21:02:45,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-06 21:02:45,555 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:45,555 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:45,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:45,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:45,769 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:45,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:45,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1064467939, now seen corresponding path program 1 times [2021-10-06 21:02:45,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:45,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150356190] [2021-10-06 21:02:45,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:45,772 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:45,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:45,773 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:45,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-06 21:02:45,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:46,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:02:46,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:46,264 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:46,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:47,761 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:47,761 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:47,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150356190] [2021-10-06 21:02:47,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [150356190] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:47,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:47,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-06 21:02:47,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543674696] [2021-10-06 21:02:47,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:02:47,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:47,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:02:47,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:02:47,763 INFO L87 Difference]: Start difference. First operand 608 states and 2536 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:48,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:48,392 INFO L93 Difference]: Finished difference Result 785 states and 3001 transitions. [2021-10-06 21:02:48,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:02:48,393 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-06 21:02:48,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:48,396 INFO L225 Difference]: With dead ends: 785 [2021-10-06 21:02:48,396 INFO L226 Difference]: Without dead ends: 764 [2021-10-06 21:02:48,396 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 745.2ms TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:02:48,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2021-10-06 21:02:48,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 616. [2021-10-06 21:02:48,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 615 states have (on average 4.152845528455285) internal successors, (2554), 615 states have internal predecessors, (2554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:48,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 2554 transitions. [2021-10-06 21:02:48,418 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 2554 transitions. Word has length 23 [2021-10-06 21:02:48,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:48,419 INFO L470 AbstractCegarLoop]: Abstraction has 616 states and 2554 transitions. [2021-10-06 21:02:48,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:48,419 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 2554 transitions. [2021-10-06 21:02:48,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-06 21:02:48,422 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:48,422 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:48,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:48,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:48,635 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:48,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:48,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1521140107, now seen corresponding path program 2 times [2021-10-06 21:02:48,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:48,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1048829527] [2021-10-06 21:02:48,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:02:48,638 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:48,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:48,639 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:48,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-06 21:02:48,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:02:48,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:48,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:02:48,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:49,139 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:49,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:49,976 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:49,976 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:49,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1048829527] [2021-10-06 21:02:49,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1048829527] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:49,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:49,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-06 21:02:49,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216196051] [2021-10-06 21:02:49,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 21:02:49,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:49,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 21:02:49,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-06 21:02:49,979 INFO L87 Difference]: Start difference. First operand 616 states and 2554 transitions. Second operand has 9 states, 8 states have (on average 4.125) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:50,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:50,525 INFO L93 Difference]: Finished difference Result 755 states and 2944 transitions. [2021-10-06 21:02:50,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:02:50,526 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-06 21:02:50,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:50,529 INFO L225 Difference]: With dead ends: 755 [2021-10-06 21:02:50,529 INFO L226 Difference]: Without dead ends: 738 [2021-10-06 21:02:50,529 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 442.2ms TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:02:50,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2021-10-06 21:02:50,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 656. [2021-10-06 21:02:50,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 655 states have (on average 4.0564885496183205) internal successors, (2657), 655 states have internal predecessors, (2657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:50,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 2657 transitions. [2021-10-06 21:02:50,552 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 2657 transitions. Word has length 23 [2021-10-06 21:02:50,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:50,552 INFO L470 AbstractCegarLoop]: Abstraction has 656 states and 2657 transitions. [2021-10-06 21:02:50,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:50,552 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 2657 transitions. [2021-10-06 21:02:50,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-06 21:02:50,555 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:50,555 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:50,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:50,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:50,768 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:50,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:50,769 INFO L82 PathProgramCache]: Analyzing trace with hash 904740097, now seen corresponding path program 3 times [2021-10-06 21:02:50,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:50,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73715890] [2021-10-06 21:02:50,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:02:50,770 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:50,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:50,772 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:50,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-06 21:02:51,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:02:51,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:51,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:02:51,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:51,609 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:51,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:54,434 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:54,434 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:54,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73715890] [2021-10-06 21:02:54,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [73715890] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:54,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:54,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-06 21:02:54,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308886216] [2021-10-06 21:02:54,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:02:54,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:54,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:02:54,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:02:54,437 INFO L87 Difference]: Start difference. First operand 656 states and 2657 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:56,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:56,422 INFO L93 Difference]: Finished difference Result 910 states and 3379 transitions. [2021-10-06 21:02:56,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:02:56,423 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-06 21:02:56,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:56,426 INFO L225 Difference]: With dead ends: 910 [2021-10-06 21:02:56,426 INFO L226 Difference]: Without dead ends: 890 [2021-10-06 21:02:56,427 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 2303.2ms TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:02:56,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2021-10-06 21:02:56,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 684. [2021-10-06 21:02:56,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 4.027818448023426) internal successors, (2751), 683 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:56,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 2751 transitions. [2021-10-06 21:02:56,448 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 2751 transitions. Word has length 23 [2021-10-06 21:02:56,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:56,448 INFO L470 AbstractCegarLoop]: Abstraction has 684 states and 2751 transitions. [2021-10-06 21:02:56,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:56,449 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 2751 transitions. [2021-10-06 21:02:56,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-06 21:02:56,452 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:56,452 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:56,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:56,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:56,665 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:56,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:56,666 INFO L82 PathProgramCache]: Analyzing trace with hash -178968039, now seen corresponding path program 4 times [2021-10-06 21:02:56,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:56,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390786114] [2021-10-06 21:02:56,668 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:02:56,668 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:56,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:56,669 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:56,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-06 21:02:57,036 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:02:57,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:57,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:02:57,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:57,432 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:57,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:58,932 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:58,933 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:58,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [390786114] [2021-10-06 21:02:58,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [390786114] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:58,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:58,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-06 21:02:58,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152578038] [2021-10-06 21:02:58,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:02:58,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:58,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:02:58,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:02:58,935 INFO L87 Difference]: Start difference. First operand 684 states and 2751 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:59,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:59,474 INFO L93 Difference]: Finished difference Result 845 states and 3240 transitions. [2021-10-06 21:02:59,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:02:59,475 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-06 21:02:59,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:59,480 INFO L225 Difference]: With dead ends: 845 [2021-10-06 21:02:59,480 INFO L226 Difference]: Without dead ends: 828 [2021-10-06 21:02:59,480 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 727.1ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:02:59,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2021-10-06 21:02:59,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 698. [2021-10-06 21:02:59,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 697 states have (on average 4.061692969870875) internal successors, (2831), 697 states have internal predecessors, (2831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:59,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 2831 transitions. [2021-10-06 21:02:59,500 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 2831 transitions. Word has length 23 [2021-10-06 21:02:59,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:59,501 INFO L470 AbstractCegarLoop]: Abstraction has 698 states and 2831 transitions. [2021-10-06 21:02:59,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:59,501 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 2831 transitions. [2021-10-06 21:02:59,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-06 21:02:59,503 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:59,504 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:59,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:59,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:59,705 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:59,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:59,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1431972919, now seen corresponding path program 5 times [2021-10-06 21:02:59,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:59,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025748166] [2021-10-06 21:02:59,706 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:02:59,706 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:59,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:59,708 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:59,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-06 21:03:00,111 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:03:00,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:00,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:03:00,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:00,515 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:00,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:02,005 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:02,006 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:02,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2025748166] [2021-10-06 21:03:02,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2025748166] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:03:02,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:03:02,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-06 21:03:02,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305706607] [2021-10-06 21:03:02,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:03:02,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:02,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:03:02,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:03:02,009 INFO L87 Difference]: Start difference. First operand 698 states and 2831 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:02,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:02,621 INFO L93 Difference]: Finished difference Result 811 states and 3154 transitions. [2021-10-06 21:03:02,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:03:02,622 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-06 21:03:02,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:02,625 INFO L225 Difference]: With dead ends: 811 [2021-10-06 21:03:02,625 INFO L226 Difference]: Without dead ends: 794 [2021-10-06 21:03:02,625 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 743.9ms TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:03:02,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2021-10-06 21:03:02,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 708. [2021-10-06 21:03:02,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 707 states have (on average 4.048090523338048) internal successors, (2862), 707 states have internal predecessors, (2862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:02,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 2862 transitions. [2021-10-06 21:03:02,647 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 2862 transitions. Word has length 23 [2021-10-06 21:03:02,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:02,647 INFO L470 AbstractCegarLoop]: Abstraction has 708 states and 2862 transitions. [2021-10-06 21:03:02,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:02,648 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 2862 transitions. [2021-10-06 21:03:02,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-06 21:03:02,652 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:02,652 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:02,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:02,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:02,866 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:03:02,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:02,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1094786915, now seen corresponding path program 6 times [2021-10-06 21:03:02,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:02,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [564045465] [2021-10-06 21:03:02,867 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:03:02,867 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:02,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:02,869 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:02,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-06 21:03:03,281 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:03:03,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:03,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:03:03,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:03,529 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:03,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:04,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:04,977 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:04,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [564045465] [2021-10-06 21:03:04,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [564045465] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:03:04,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:03:04,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:03:04,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448451659] [2021-10-06 21:03:04,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-06 21:03:04,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:04,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-06 21:03:04,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:03:04,979 INFO L87 Difference]: Start difference. First operand 708 states and 2862 transitions. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:05,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:05,640 INFO L93 Difference]: Finished difference Result 981 states and 3672 transitions. [2021-10-06 21:03:05,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:03:05,641 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-06 21:03:05,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:05,645 INFO L225 Difference]: With dead ends: 981 [2021-10-06 21:03:05,645 INFO L226 Difference]: Without dead ends: 966 [2021-10-06 21:03:05,645 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 768.2ms TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:03:05,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2021-10-06 21:03:05,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 720. [2021-10-06 21:03:05,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 719 states have (on average 4.019471488178025) internal successors, (2890), 719 states have internal predecessors, (2890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:05,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 2890 transitions. [2021-10-06 21:03:05,671 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 2890 transitions. Word has length 23 [2021-10-06 21:03:05,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:05,671 INFO L470 AbstractCegarLoop]: Abstraction has 720 states and 2890 transitions. [2021-10-06 21:03:05,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:05,672 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 2890 transitions. [2021-10-06 21:03:05,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-06 21:03:05,674 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:05,675 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:05,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:05,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:05,889 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:03:05,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:05,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1898006751, now seen corresponding path program 7 times [2021-10-06 21:03:05,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:05,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689425713] [2021-10-06 21:03:05,891 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:03:05,892 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:05,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:05,893 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:05,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-06 21:03:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:03:06,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:03:06,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:06,694 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:06,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:08,105 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:08,106 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:08,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689425713] [2021-10-06 21:03:08,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1689425713] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:03:08,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:03:08,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:03:08,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599038848] [2021-10-06 21:03:08,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-06 21:03:08,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:08,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-06 21:03:08,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:03:08,107 INFO L87 Difference]: Start difference. First operand 720 states and 2890 transitions. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:10,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:10,403 INFO L93 Difference]: Finished difference Result 1062 states and 3883 transitions. [2021-10-06 21:03:10,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:03:10,404 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-06 21:03:10,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:10,410 INFO L225 Difference]: With dead ends: 1062 [2021-10-06 21:03:10,410 INFO L226 Difference]: Without dead ends: 1042 [2021-10-06 21:03:10,411 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2216.0ms TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:03:10,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2021-10-06 21:03:10,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 724. [2021-10-06 21:03:10,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 723 states have (on average 4.017980636237898) internal successors, (2905), 723 states have internal predecessors, (2905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:10,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 2905 transitions. [2021-10-06 21:03:10,451 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 2905 transitions. Word has length 23 [2021-10-06 21:03:10,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:10,451 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 2905 transitions. [2021-10-06 21:03:10,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:10,451 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 2905 transitions. [2021-10-06 21:03:10,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-06 21:03:10,455 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:10,455 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:10,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:10,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:10,669 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:03:10,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:10,670 INFO L82 PathProgramCache]: Analyzing trace with hash 317652551, now seen corresponding path program 8 times [2021-10-06 21:03:10,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:10,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227061597] [2021-10-06 21:03:10,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:03:10,671 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:10,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:10,672 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:10,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-06 21:03:11,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:03:11,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:11,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:03:11,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:11,356 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:11,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:12,149 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:12,150 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:12,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227061597] [2021-10-06 21:03:12,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227061597] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:03:12,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:03:12,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-06 21:03:12,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167641965] [2021-10-06 21:03:12,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 21:03:12,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:12,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 21:03:12,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-06 21:03:12,152 INFO L87 Difference]: Start difference. First operand 724 states and 2905 transitions. Second operand has 9 states, 8 states have (on average 4.125) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:12,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:12,628 INFO L93 Difference]: Finished difference Result 843 states and 3244 transitions. [2021-10-06 21:03:12,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:03:12,629 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-06 21:03:12,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:12,632 INFO L225 Difference]: With dead ends: 843 [2021-10-06 21:03:12,632 INFO L226 Difference]: Without dead ends: 826 [2021-10-06 21:03:12,633 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 426.0ms TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:03:12,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2021-10-06 21:03:12,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 738. [2021-10-06 21:03:12,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 737 states have (on average 3.993215739484396) internal successors, (2943), 737 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:12,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 2943 transitions. [2021-10-06 21:03:12,667 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 2943 transitions. Word has length 23 [2021-10-06 21:03:12,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:12,667 INFO L470 AbstractCegarLoop]: Abstraction has 738 states and 2943 transitions. [2021-10-06 21:03:12,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:12,667 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 2943 transitions. [2021-10-06 21:03:12,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-06 21:03:12,670 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:12,670 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:12,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:12,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:12,885 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:03:12,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:12,887 INFO L82 PathProgramCache]: Analyzing trace with hash -552336309, now seen corresponding path program 9 times [2021-10-06 21:03:12,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:12,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757943646] [2021-10-06 21:03:12,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:03:12,888 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:12,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:12,889 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:12,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-06 21:03:13,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:03:13,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:13,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:03:13,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:13,703 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:13,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:15,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:15,142 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:15,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757943646] [2021-10-06 21:03:15,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757943646] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:03:15,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:03:15,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-06 21:03:15,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333513987] [2021-10-06 21:03:15,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:03:15,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:15,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:03:15,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:03:15,144 INFO L87 Difference]: Start difference. First operand 738 states and 2943 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:15,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:15,765 INFO L93 Difference]: Finished difference Result 881 states and 3331 transitions. [2021-10-06 21:03:15,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:03:15,765 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-06 21:03:15,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:15,770 INFO L225 Difference]: With dead ends: 881 [2021-10-06 21:03:15,770 INFO L226 Difference]: Without dead ends: 864 [2021-10-06 21:03:15,771 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 733.8ms TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:03:15,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2021-10-06 21:03:15,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 738. [2021-10-06 21:03:15,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 737 states have (on average 3.993215739484396) internal successors, (2943), 737 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:15,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 2943 transitions. [2021-10-06 21:03:15,796 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 2943 transitions. Word has length 23 [2021-10-06 21:03:15,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:15,796 INFO L470 AbstractCegarLoop]: Abstraction has 738 states and 2943 transitions. [2021-10-06 21:03:15,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:15,796 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 2943 transitions. [2021-10-06 21:03:15,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-06 21:03:15,799 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:15,799 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:15,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:16,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:16,014 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:03:16,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:16,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1058604649, now seen corresponding path program 10 times [2021-10-06 21:03:16,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:16,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590716687] [2021-10-06 21:03:16,016 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:03:16,017 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:16,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:16,017 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:16,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-06 21:03:16,560 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:03:16,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:16,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:03:16,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:16,895 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:16,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:18,275 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:18,275 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:18,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1590716687] [2021-10-06 21:03:18,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1590716687] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:03:18,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:03:18,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-06 21:03:18,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671335681] [2021-10-06 21:03:18,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:03:18,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:18,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:03:18,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:03:18,278 INFO L87 Difference]: Start difference. First operand 738 states and 2943 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:18,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:18,916 INFO L93 Difference]: Finished difference Result 867 states and 3294 transitions. [2021-10-06 21:03:18,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:03:18,916 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-06 21:03:18,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:18,920 INFO L225 Difference]: With dead ends: 867 [2021-10-06 21:03:18,920 INFO L226 Difference]: Without dead ends: 850 [2021-10-06 21:03:18,921 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 769.6ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:03:18,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2021-10-06 21:03:18,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 724. [2021-10-06 21:03:18,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 723 states have (on average 3.959889349930844) internal successors, (2863), 723 states have internal predecessors, (2863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:18,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 2863 transitions. [2021-10-06 21:03:18,946 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 2863 transitions. Word has length 23 [2021-10-06 21:03:18,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:18,946 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 2863 transitions. [2021-10-06 21:03:18,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:18,947 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 2863 transitions. [2021-10-06 21:03:18,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:03:18,949 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:18,949 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:18,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:19,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:19,165 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:03:19,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:19,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1225263736, now seen corresponding path program 1 times [2021-10-06 21:03:19,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:19,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241392893] [2021-10-06 21:03:19,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:03:19,167 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:19,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:19,169 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:19,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-06 21:03:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:03:19,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:03:19,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:19,993 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:19,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:20,166 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:20,166 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:20,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241392893] [2021-10-06 21:03:20,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1241392893] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:03:20,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:03:20,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-10-06 21:03:20,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417676203] [2021-10-06 21:03:20,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:03:20,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:20,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:03:20,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:03:20,169 INFO L87 Difference]: Start difference. First operand 724 states and 2863 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:20,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:20,774 INFO L93 Difference]: Finished difference Result 874 states and 3231 transitions. [2021-10-06 21:03:20,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 21:03:20,775 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:03:20,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:20,777 INFO L225 Difference]: With dead ends: 874 [2021-10-06 21:03:20,777 INFO L226 Difference]: Without dead ends: 868 [2021-10-06 21:03:20,777 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 482.1ms TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:03:20,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2021-10-06 21:03:20,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 730. [2021-10-06 21:03:20,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 729 states have (on average 3.9588477366255144) internal successors, (2886), 729 states have internal predecessors, (2886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:20,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 2886 transitions. [2021-10-06 21:03:20,805 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 2886 transitions. Word has length 24 [2021-10-06 21:03:20,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:20,805 INFO L470 AbstractCegarLoop]: Abstraction has 730 states and 2886 transitions. [2021-10-06 21:03:20,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:20,806 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 2886 transitions. [2021-10-06 21:03:20,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:03:20,808 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:20,808 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:20,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:21,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:21,009 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:03:21,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:21,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1236161026, now seen corresponding path program 2 times [2021-10-06 21:03:21,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:21,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [876219104] [2021-10-06 21:03:21,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:03:21,012 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:21,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:21,014 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:21,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-06 21:03:21,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:03:21,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:21,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:03:21,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:22,001 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:22,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:22,180 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:22,180 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:22,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [876219104] [2021-10-06 21:03:22,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [876219104] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:03:22,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:03:22,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-10-06 21:03:22,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210372609] [2021-10-06 21:03:22,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:03:22,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:22,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:03:22,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:03:22,183 INFO L87 Difference]: Start difference. First operand 730 states and 2886 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:22,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:22,457 INFO L93 Difference]: Finished difference Result 842 states and 3176 transitions. [2021-10-06 21:03:22,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:03:22,458 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:03:22,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:22,460 INFO L225 Difference]: With dead ends: 842 [2021-10-06 21:03:22,460 INFO L226 Difference]: Without dead ends: 842 [2021-10-06 21:03:22,460 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 204.5ms TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:03:22,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2021-10-06 21:03:22,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 734. [2021-10-06 21:03:22,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 733 states have (on average 3.942701227830832) internal successors, (2890), 733 states have internal predecessors, (2890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:22,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 2890 transitions. [2021-10-06 21:03:22,476 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 2890 transitions. Word has length 24 [2021-10-06 21:03:22,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:22,476 INFO L470 AbstractCegarLoop]: Abstraction has 734 states and 2890 transitions. [2021-10-06 21:03:22,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:22,476 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 2890 transitions. [2021-10-06 21:03:22,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:03:22,478 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:22,478 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:22,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:22,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:22,679 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:03:22,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:22,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1295452678, now seen corresponding path program 3 times [2021-10-06 21:03:22,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:22,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145806629] [2021-10-06 21:03:22,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:03:22,681 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:22,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:22,683 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:22,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-06 21:03:23,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:03:23,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:23,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:03:23,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:23,585 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:23,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:23,711 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:23,711 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:23,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2145806629] [2021-10-06 21:03:23,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2145806629] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:03:23,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:03:23,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2021-10-06 21:03:23,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216427669] [2021-10-06 21:03:23,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:03:23,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:23,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:03:23,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:03:23,713 INFO L87 Difference]: Start difference. First operand 734 states and 2890 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:23,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:23,988 INFO L93 Difference]: Finished difference Result 890 states and 3326 transitions. [2021-10-06 21:03:23,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:03:23,988 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:03:23,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:23,990 INFO L225 Difference]: With dead ends: 890 [2021-10-06 21:03:23,990 INFO L226 Difference]: Without dead ends: 890 [2021-10-06 21:03:23,991 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 148.8ms TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:03:23,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2021-10-06 21:03:24,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 744. [2021-10-06 21:03:24,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 743 states have (on average 3.9259757738896366) internal successors, (2917), 743 states have internal predecessors, (2917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:24,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 2917 transitions. [2021-10-06 21:03:24,007 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 2917 transitions. Word has length 24 [2021-10-06 21:03:24,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:24,007 INFO L470 AbstractCegarLoop]: Abstraction has 744 states and 2917 transitions. [2021-10-06 21:03:24,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:24,007 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 2917 transitions. [2021-10-06 21:03:24,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:03:24,010 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:24,010 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:24,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2021-10-06 21:03:24,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:24,211 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:03:24,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:24,212 INFO L82 PathProgramCache]: Analyzing trace with hash -599299654, now seen corresponding path program 4 times [2021-10-06 21:03:24,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:24,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973133291] [2021-10-06 21:03:24,213 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:03:24,213 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:24,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:24,215 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:24,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-06 21:03:24,852 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:03:24,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:24,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:03:24,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:25,063 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:25,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:25,215 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:25,215 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:25,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973133291] [2021-10-06 21:03:25,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [973133291] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:03:25,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:03:25,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-10-06 21:03:25,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800237497] [2021-10-06 21:03:25,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:03:25,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:25,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:03:25,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:03:25,217 INFO L87 Difference]: Start difference. First operand 744 states and 2917 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:25,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:25,914 INFO L93 Difference]: Finished difference Result 932 states and 3408 transitions. [2021-10-06 21:03:25,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:03:25,915 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:03:25,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:25,917 INFO L225 Difference]: With dead ends: 932 [2021-10-06 21:03:25,917 INFO L226 Difference]: Without dead ends: 926 [2021-10-06 21:03:25,917 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 449.5ms TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:03:25,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-06 21:03:25,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 750. [2021-10-06 21:03:25,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 749 states have (on average 3.925233644859813) internal successors, (2940), 749 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:25,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 2940 transitions. [2021-10-06 21:03:25,935 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 2940 transitions. Word has length 24 [2021-10-06 21:03:25,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:25,936 INFO L470 AbstractCegarLoop]: Abstraction has 750 states and 2940 transitions. [2021-10-06 21:03:25,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:25,936 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 2940 transitions. [2021-10-06 21:03:25,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:03:25,939 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:25,939 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:25,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:26,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:26,140 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:03:26,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:26,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1862125108, now seen corresponding path program 5 times [2021-10-06 21:03:26,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:26,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1096802485] [2021-10-06 21:03:26,143 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:03:26,143 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:26,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:26,144 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:26,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-06 21:03:26,821 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:03:26,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:26,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:03:26,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:27,050 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:27,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:27,206 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:27,207 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:27,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1096802485] [2021-10-06 21:03:27,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1096802485] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:03:27,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:03:27,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-10-06 21:03:27,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4133373] [2021-10-06 21:03:27,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:03:27,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:27,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:03:27,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:03:27,210 INFO L87 Difference]: Start difference. First operand 750 states and 2940 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:27,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:27,502 INFO L93 Difference]: Finished difference Result 906 states and 3368 transitions. [2021-10-06 21:03:27,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:03:27,503 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:03:27,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:27,506 INFO L225 Difference]: With dead ends: 906 [2021-10-06 21:03:27,506 INFO L226 Difference]: Without dead ends: 906 [2021-10-06 21:03:27,506 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 200.5ms TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:03:27,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2021-10-06 21:03:27,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 744. [2021-10-06 21:03:27,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 743 states have (on average 3.9259757738896366) internal successors, (2917), 743 states have internal predecessors, (2917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:27,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 2917 transitions. [2021-10-06 21:03:27,526 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 2917 transitions. Word has length 24 [2021-10-06 21:03:27,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:27,526 INFO L470 AbstractCegarLoop]: Abstraction has 744 states and 2917 transitions. [2021-10-06 21:03:27,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:27,527 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 2917 transitions. [2021-10-06 21:03:27,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:03:27,529 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:27,529 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:27,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2021-10-06 21:03:27,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:27,744 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:03:27,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:27,745 INFO L82 PathProgramCache]: Analyzing trace with hash -850961566, now seen corresponding path program 1 times [2021-10-06 21:03:27,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:27,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1198093261] [2021-10-06 21:03:27,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:03:27,746 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:27,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:27,747 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:27,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-06 21:03:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:03:28,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:03:28,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:28,560 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:28,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:28,686 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:28,686 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:28,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1198093261] [2021-10-06 21:03:28,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1198093261] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:03:28,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:03:28,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2021-10-06 21:03:28,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324639524] [2021-10-06 21:03:28,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:03:28,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:28,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:03:28,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:03:28,688 INFO L87 Difference]: Start difference. First operand 744 states and 2917 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:29,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:29,015 INFO L93 Difference]: Finished difference Result 1002 states and 3801 transitions. [2021-10-06 21:03:29,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:03:29,016 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:03:29,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:29,018 INFO L225 Difference]: With dead ends: 1002 [2021-10-06 21:03:29,018 INFO L226 Difference]: Without dead ends: 1002 [2021-10-06 21:03:29,018 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 140.4ms TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:03:29,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2021-10-06 21:03:29,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 790. [2021-10-06 21:03:29,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 789 states have (on average 3.91254752851711) internal successors, (3087), 789 states have internal predecessors, (3087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:29,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 3087 transitions. [2021-10-06 21:03:29,040 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 3087 transitions. Word has length 24 [2021-10-06 21:03:29,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:29,040 INFO L470 AbstractCegarLoop]: Abstraction has 790 states and 3087 transitions. [2021-10-06 21:03:29,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:29,040 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 3087 transitions. [2021-10-06 21:03:29,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:03:29,042 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:29,042 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:29,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:29,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:29,243 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:03:29,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:29,244 INFO L82 PathProgramCache]: Analyzing trace with hash -394289398, now seen corresponding path program 2 times [2021-10-06 21:03:29,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:29,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1160047626] [2021-10-06 21:03:29,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:03:29,245 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:29,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:29,246 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:29,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-06 21:03:30,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:03:30,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:30,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:03:30,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:30,262 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:30,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:30,432 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:30,433 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:30,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1160047626] [2021-10-06 21:03:30,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1160047626] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:03:30,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:03:30,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-10-06 21:03:30,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247550043] [2021-10-06 21:03:30,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:03:30,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:30,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:03:30,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:03:30,435 INFO L87 Difference]: Start difference. First operand 790 states and 3087 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:30,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:30,793 INFO L93 Difference]: Finished difference Result 1056 states and 3975 transitions. [2021-10-06 21:03:30,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:03:30,794 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:03:30,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:30,797 INFO L225 Difference]: With dead ends: 1056 [2021-10-06 21:03:30,797 INFO L226 Difference]: Without dead ends: 1056 [2021-10-06 21:03:30,797 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 201.1ms TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:03:30,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2021-10-06 21:03:30,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 804. [2021-10-06 21:03:30,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 803 states have (on average 3.925280199252802) internal successors, (3152), 803 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:30,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 3152 transitions. [2021-10-06 21:03:30,832 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 3152 transitions. Word has length 24 [2021-10-06 21:03:30,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:30,832 INFO L470 AbstractCegarLoop]: Abstraction has 804 states and 3152 transitions. [2021-10-06 21:03:30,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:30,833 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 3152 transitions. [2021-10-06 21:03:30,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:03:30,835 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:30,835 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:30,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:31,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:31,049 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:03:31,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:31,050 INFO L82 PathProgramCache]: Analyzing trace with hash 350413100, now seen corresponding path program 3 times [2021-10-06 21:03:31,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:31,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1948605444] [2021-10-06 21:03:31,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:03:31,052 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:31,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:31,054 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:31,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-06 21:03:31,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:03:31,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:31,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:03:31,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:32,075 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:32,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:32,257 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:32,258 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:32,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1948605444] [2021-10-06 21:03:32,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1948605444] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:03:32,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:03:32,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-10-06 21:03:32,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55157651] [2021-10-06 21:03:32,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:03:32,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:32,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:03:32,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:03:32,260 INFO L87 Difference]: Start difference. First operand 804 states and 3152 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:32,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:32,634 INFO L93 Difference]: Finished difference Result 1036 states and 3921 transitions. [2021-10-06 21:03:32,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:03:32,635 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:03:32,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:32,638 INFO L225 Difference]: With dead ends: 1036 [2021-10-06 21:03:32,638 INFO L226 Difference]: Without dead ends: 1036 [2021-10-06 21:03:32,638 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 222.3ms TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:03:32,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2021-10-06 21:03:32,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 804. [2021-10-06 21:03:32,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 803 states have (on average 3.925280199252802) internal successors, (3152), 803 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:32,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 3152 transitions. [2021-10-06 21:03:32,655 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 3152 transitions. Word has length 24 [2021-10-06 21:03:32,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:32,655 INFO L470 AbstractCegarLoop]: Abstraction has 804 states and 3152 transitions. [2021-10-06 21:03:32,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:32,655 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 3152 transitions. [2021-10-06 21:03:32,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:03:32,657 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:32,657 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:32,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2021-10-06 21:03:32,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:32,858 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:03:32,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:32,859 INFO L82 PathProgramCache]: Analyzing trace with hash 506497634, now seen corresponding path program 4 times [2021-10-06 21:03:32,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:32,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110375825] [2021-10-06 21:03:32,860 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:03:32,860 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:32,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:32,861 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:32,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-06 21:03:33,566 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:03:33,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:33,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:03:33,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:33,731 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:33,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:33,851 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:33,851 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:33,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110375825] [2021-10-06 21:03:33,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2110375825] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:03:33,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:03:33,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2021-10-06 21:03:33,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056460152] [2021-10-06 21:03:33,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:03:33,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:33,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:03:33,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:03:33,853 INFO L87 Difference]: Start difference. First operand 804 states and 3152 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:34,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:34,170 INFO L93 Difference]: Finished difference Result 1012 states and 3841 transitions. [2021-10-06 21:03:34,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:03:34,171 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:03:34,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:34,174 INFO L225 Difference]: With dead ends: 1012 [2021-10-06 21:03:34,174 INFO L226 Difference]: Without dead ends: 1012 [2021-10-06 21:03:34,174 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 140.0ms TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:03:34,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2021-10-06 21:03:34,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 818. [2021-10-06 21:03:34,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 817 states have (on average 3.9277845777233784) internal successors, (3209), 817 states have internal predecessors, (3209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:34,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 3209 transitions. [2021-10-06 21:03:34,192 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 3209 transitions. Word has length 24 [2021-10-06 21:03:34,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:34,192 INFO L470 AbstractCegarLoop]: Abstraction has 818 states and 3209 transitions. [2021-10-06 21:03:34,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:34,193 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 3209 transitions. [2021-10-06 21:03:34,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:03:34,194 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:34,194 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:34,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:34,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:34,396 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:03:34,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:34,397 INFO L82 PathProgramCache]: Analyzing trace with hash -97002344, now seen corresponding path program 5 times [2021-10-06 21:03:34,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:34,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011381655] [2021-10-06 21:03:34,398 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:03:34,398 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:34,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:34,400 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:34,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-06 21:03:35,160 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:03:35,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:35,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:03:35,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:35,386 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:35,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:35,540 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:35,541 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:35,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011381655] [2021-10-06 21:03:35,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011381655] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:03:35,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:03:35,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-10-06 21:03:35,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143494654] [2021-10-06 21:03:35,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:03:35,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:35,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:03:35,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:03:35,543 INFO L87 Difference]: Start difference. First operand 818 states and 3209 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:35,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:35,949 INFO L93 Difference]: Finished difference Result 1066 states and 4015 transitions. [2021-10-06 21:03:35,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:03:35,950 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:03:35,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:35,952 INFO L225 Difference]: With dead ends: 1066 [2021-10-06 21:03:35,952 INFO L226 Difference]: Without dead ends: 1066 [2021-10-06 21:03:35,953 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 219.7ms TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:03:35,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-10-06 21:03:35,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 826. [2021-10-06 21:03:35,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 825 states have (on average 3.9454545454545453) internal successors, (3255), 825 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:35,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 3255 transitions. [2021-10-06 21:03:35,974 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 3255 transitions. Word has length 24 [2021-10-06 21:03:35,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:35,974 INFO L470 AbstractCegarLoop]: Abstraction has 826 states and 3255 transitions. [2021-10-06 21:03:35,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:35,975 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 3255 transitions. [2021-10-06 21:03:35,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:03:35,978 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:35,978 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:35,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:36,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:36,191 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:03:36,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:36,192 INFO L82 PathProgramCache]: Analyzing trace with hash 647700154, now seen corresponding path program 6 times [2021-10-06 21:03:36,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:36,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1814392793] [2021-10-06 21:03:36,193 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:03:36,194 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:36,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:36,195 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:36,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-06 21:03:37,056 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:03:37,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:37,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:03:37,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:37,294 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:37,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:37,450 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:37,450 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:37,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1814392793] [2021-10-06 21:03:37,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1814392793] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:03:37,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:03:37,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-10-06 21:03:37,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53824190] [2021-10-06 21:03:37,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:03:37,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:37,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:03:37,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:03:37,454 INFO L87 Difference]: Start difference. First operand 826 states and 3255 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:37,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:37,846 INFO L93 Difference]: Finished difference Result 1038 states and 3939 transitions. [2021-10-06 21:03:37,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:03:37,847 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:03:37,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:37,849 INFO L225 Difference]: With dead ends: 1038 [2021-10-06 21:03:37,849 INFO L226 Difference]: Without dead ends: 1038 [2021-10-06 21:03:37,850 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 203.2ms TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:03:37,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2021-10-06 21:03:37,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 818. [2021-10-06 21:03:37,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 817 states have (on average 3.9277845777233784) internal successors, (3209), 817 states have internal predecessors, (3209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:37,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 3209 transitions. [2021-10-06 21:03:37,871 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 3209 transitions. Word has length 24 [2021-10-06 21:03:37,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:37,872 INFO L470 AbstractCegarLoop]: Abstraction has 818 states and 3209 transitions. [2021-10-06 21:03:37,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:37,872 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 3209 transitions. [2021-10-06 21:03:37,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:03:37,875 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:37,875 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:37,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:38,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:38,077 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:03:38,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:38,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1560412734, now seen corresponding path program 6 times [2021-10-06 21:03:38,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:38,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656878553] [2021-10-06 21:03:38,079 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:03:38,080 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:38,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:38,080 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:38,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-06 21:03:38,958 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:03:38,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:38,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:03:38,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:39,244 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:39,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:39,422 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:39,423 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:39,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [656878553] [2021-10-06 21:03:39,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [656878553] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:03:39,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:03:39,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-10-06 21:03:39,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485943930] [2021-10-06 21:03:39,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:03:39,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:39,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:03:39,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:03:39,425 INFO L87 Difference]: Start difference. First operand 818 states and 3209 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:40,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:40,032 INFO L93 Difference]: Finished difference Result 1094 states and 3933 transitions. [2021-10-06 21:03:40,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:03:40,032 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:03:40,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:40,035 INFO L225 Difference]: With dead ends: 1094 [2021-10-06 21:03:40,035 INFO L226 Difference]: Without dead ends: 1080 [2021-10-06 21:03:40,035 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 465.4ms TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:03:40,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2021-10-06 21:03:40,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 822. [2021-10-06 21:03:40,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 821 states have (on average 3.9196102314250916) internal successors, (3218), 821 states have internal predecessors, (3218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:40,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 3218 transitions. [2021-10-06 21:03:40,052 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 3218 transitions. Word has length 24 [2021-10-06 21:03:40,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:40,053 INFO L470 AbstractCegarLoop]: Abstraction has 822 states and 3218 transitions. [2021-10-06 21:03:40,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:40,053 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 3218 transitions. [2021-10-06 21:03:40,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:03:40,055 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:40,055 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:40,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2021-10-06 21:03:40,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:40,256 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:03:40,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:40,257 INFO L82 PathProgramCache]: Analyzing trace with hash 148321716, now seen corresponding path program 7 times [2021-10-06 21:03:40,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:40,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [809141282] [2021-10-06 21:03:40,258 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:03:40,258 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:40,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:40,260 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:40,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-06 21:03:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:03:41,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:03:41,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:41,369 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:41,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:41,590 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:41,590 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:41,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [809141282] [2021-10-06 21:03:41,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [809141282] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:03:41,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:03:41,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:03:41,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689099751] [2021-10-06 21:03:41,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:03:41,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:41,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:03:41,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:03:41,593 INFO L87 Difference]: Start difference. First operand 822 states and 3218 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:42,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:42,490 INFO L93 Difference]: Finished difference Result 1122 states and 3993 transitions. [2021-10-06 21:03:42,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 21:03:42,491 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:03:42,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:42,494 INFO L225 Difference]: With dead ends: 1122 [2021-10-06 21:03:42,494 INFO L226 Difference]: Without dead ends: 1116 [2021-10-06 21:03:42,494 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 779.6ms TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:03:42,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-10-06 21:03:42,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 828. [2021-10-06 21:03:42,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 827 states have (on average 3.9189842805320434) internal successors, (3241), 827 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:42,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 3241 transitions. [2021-10-06 21:03:42,512 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 3241 transitions. Word has length 24 [2021-10-06 21:03:42,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:42,513 INFO L470 AbstractCegarLoop]: Abstraction has 828 states and 3241 transitions. [2021-10-06 21:03:42,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:42,513 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 3241 transitions. [2021-10-06 21:03:42,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:03:42,515 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:42,515 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:42,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2021-10-06 21:03:42,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:42,716 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:03:42,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:42,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1685220818, now seen corresponding path program 8 times [2021-10-06 21:03:42,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:42,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [694304307] [2021-10-06 21:03:42,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:03:42,718 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:42,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:42,719 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:42,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-06 21:03:43,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:03:43,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:43,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:03:43,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:43,946 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:43,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:44,174 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:44,175 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:44,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [694304307] [2021-10-06 21:03:44,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [694304307] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:03:44,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:03:44,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:03:44,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078031773] [2021-10-06 21:03:44,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:03:44,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:44,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:03:44,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:03:44,177 INFO L87 Difference]: Start difference. First operand 828 states and 3241 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:44,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:44,536 INFO L93 Difference]: Finished difference Result 1090 states and 3938 transitions. [2021-10-06 21:03:44,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:03:44,536 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:03:44,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:44,539 INFO L225 Difference]: With dead ends: 1090 [2021-10-06 21:03:44,539 INFO L226 Difference]: Without dead ends: 1090 [2021-10-06 21:03:44,539 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 337.6ms TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:03:44,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2021-10-06 21:03:44,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 818. [2021-10-06 21:03:44,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 817 states have (on average 3.9277845777233784) internal successors, (3209), 817 states have internal predecessors, (3209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:44,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 3209 transitions. [2021-10-06 21:03:44,568 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 3209 transitions. Word has length 24 [2021-10-06 21:03:44,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:44,568 INFO L470 AbstractCegarLoop]: Abstraction has 818 states and 3209 transitions. [2021-10-06 21:03:44,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:44,569 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 3209 transitions. [2021-10-06 21:03:44,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:03:44,571 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:44,571 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:44,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:44,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:44,772 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:03:44,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:44,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1136101498, now seen corresponding path program 9 times [2021-10-06 21:03:44,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:44,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [930147273] [2021-10-06 21:03:44,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:03:44,775 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:44,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:44,776 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:44,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-06 21:03:45,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:03:45,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:45,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:03:45,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:45,942 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:45,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:46,118 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:46,118 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:46,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [930147273] [2021-10-06 21:03:46,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [930147273] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:03:46,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:03:46,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-10-06 21:03:46,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296160184] [2021-10-06 21:03:46,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:03:46,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:46,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:03:46,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:03:46,120 INFO L87 Difference]: Start difference. First operand 818 states and 3209 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:46,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:46,749 INFO L93 Difference]: Finished difference Result 1040 states and 3807 transitions. [2021-10-06 21:03:46,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:03:46,750 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:03:46,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:46,752 INFO L225 Difference]: With dead ends: 1040 [2021-10-06 21:03:46,752 INFO L226 Difference]: Without dead ends: 1026 [2021-10-06 21:03:46,754 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 492.7ms TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:03:46,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2021-10-06 21:03:46,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 818. [2021-10-06 21:03:46,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 817 states have (on average 3.920440636474908) internal successors, (3203), 817 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:46,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 3203 transitions. [2021-10-06 21:03:46,785 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 3203 transitions. Word has length 24 [2021-10-06 21:03:46,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:46,785 INFO L470 AbstractCegarLoop]: Abstraction has 818 states and 3203 transitions. [2021-10-06 21:03:46,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:46,785 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 3203 transitions. [2021-10-06 21:03:46,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:03:46,787 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:46,787 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:46,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2021-10-06 21:03:46,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:46,988 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:03:46,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:46,989 INFO L82 PathProgramCache]: Analyzing trace with hash -850848030, now seen corresponding path program 7 times [2021-10-06 21:03:46,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:46,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [475475599] [2021-10-06 21:03:46,991 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:03:46,991 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:46,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:46,994 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:46,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-06 21:03:47,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:03:47,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:03:47,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:48,053 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:48,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:48,199 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:48,199 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:48,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [475475599] [2021-10-06 21:03:48,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [475475599] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:03:48,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:03:48,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-10-06 21:03:48,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070215232] [2021-10-06 21:03:48,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:03:48,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:48,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:03:48,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:03:48,201 INFO L87 Difference]: Start difference. First operand 818 states and 3203 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:48,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:48,538 INFO L93 Difference]: Finished difference Result 1242 states and 4624 transitions. [2021-10-06 21:03:48,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:03:48,541 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:03:48,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:48,545 INFO L225 Difference]: With dead ends: 1242 [2021-10-06 21:03:48,545 INFO L226 Difference]: Without dead ends: 1242 [2021-10-06 21:03:48,545 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 237.7ms TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:03:48,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2021-10-06 21:03:48,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 838. [2021-10-06 21:03:48,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 3.927120669056153) internal successors, (3287), 837 states have internal predecessors, (3287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:48,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 3287 transitions. [2021-10-06 21:03:48,572 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 3287 transitions. Word has length 24 [2021-10-06 21:03:48,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:48,572 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 3287 transitions. [2021-10-06 21:03:48,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:48,573 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 3287 transitions. [2021-10-06 21:03:48,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:03:48,583 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:48,583 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:48,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:48,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:48,798 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:03:48,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:48,799 INFO L82 PathProgramCache]: Analyzing trace with hash 60316898, now seen corresponding path program 8 times [2021-10-06 21:03:48,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:48,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130313333] [2021-10-06 21:03:48,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:03:48,800 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:48,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:48,801 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:48,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-06 21:03:49,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:03:49,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:49,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:03:49,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:50,020 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:50,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:50,192 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:50,192 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:50,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130313333] [2021-10-06 21:03:50,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130313333] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:03:50,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:03:50,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:03:50,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865777476] [2021-10-06 21:03:50,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:03:50,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:50,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:03:50,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:03:50,195 INFO L87 Difference]: Start difference. First operand 838 states and 3287 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:51,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:51,068 INFO L93 Difference]: Finished difference Result 1228 states and 4519 transitions. [2021-10-06 21:03:51,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:03:51,068 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:03:51,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:51,071 INFO L225 Difference]: With dead ends: 1228 [2021-10-06 21:03:51,071 INFO L226 Difference]: Without dead ends: 1224 [2021-10-06 21:03:51,071 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 640.4ms TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:03:51,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2021-10-06 21:03:51,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 850. [2021-10-06 21:03:51,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 849 states have (on average 3.929328621908127) internal successors, (3336), 849 states have internal predecessors, (3336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:51,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 3336 transitions. [2021-10-06 21:03:51,091 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 3336 transitions. Word has length 24 [2021-10-06 21:03:51,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:51,091 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 3336 transitions. [2021-10-06 21:03:51,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:51,091 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 3336 transitions. [2021-10-06 21:03:51,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:03:51,093 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:51,093 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:51,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Ended with exit code 0 [2021-10-06 21:03:51,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:51,294 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:03:51,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:51,295 INFO L82 PathProgramCache]: Analyzing trace with hash 905549150, now seen corresponding path program 9 times [2021-10-06 21:03:51,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:51,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1668619823] [2021-10-06 21:03:51,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:03:51,297 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:51,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:51,297 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:51,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-06 21:03:52,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:03:52,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:52,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:03:52,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:52,508 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:52,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:52,700 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:52,700 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:52,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1668619823] [2021-10-06 21:03:52,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1668619823] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:03:52,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:03:52,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:03:52,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158474713] [2021-10-06 21:03:52,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:03:52,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:52,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:03:52,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:03:52,702 INFO L87 Difference]: Start difference. First operand 850 states and 3336 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:53,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:53,045 INFO L93 Difference]: Finished difference Result 1138 states and 4302 transitions. [2021-10-06 21:03:53,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:03:53,045 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:03:53,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:53,048 INFO L225 Difference]: With dead ends: 1138 [2021-10-06 21:03:53,048 INFO L226 Difference]: Without dead ends: 1138 [2021-10-06 21:03:53,048 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 303.5ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:03:53,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2021-10-06 21:03:53,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 850. [2021-10-06 21:03:53,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 849 states have (on average 3.929328621908127) internal successors, (3336), 849 states have internal predecessors, (3336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:53,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 3336 transitions. [2021-10-06 21:03:53,065 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 3336 transitions. Word has length 24 [2021-10-06 21:03:53,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:53,065 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 3336 transitions. [2021-10-06 21:03:53,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:53,065 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 3336 transitions. [2021-10-06 21:03:53,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:03:53,067 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:53,067 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:53,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:53,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:53,268 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:03:53,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:53,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1886991442, now seen corresponding path program 10 times [2021-10-06 21:03:53,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:53,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176142223] [2021-10-06 21:03:53,270 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:03:53,270 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:53,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:53,272 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:53,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-06 21:03:54,104 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:03:54,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:54,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:03:54,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:54,451 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:54,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:54,698 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:54,698 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:54,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176142223] [2021-10-06 21:03:54,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [176142223] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:03:54,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:03:54,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:03:54,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803471391] [2021-10-06 21:03:54,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:03:54,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:54,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:03:54,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:03:54,701 INFO L87 Difference]: Start difference. First operand 850 states and 3336 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:55,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:55,097 INFO L93 Difference]: Finished difference Result 1028 states and 3856 transitions. [2021-10-06 21:03:55,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:03:55,098 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:03:55,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:55,101 INFO L225 Difference]: With dead ends: 1028 [2021-10-06 21:03:55,101 INFO L226 Difference]: Without dead ends: 1028 [2021-10-06 21:03:55,101 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 321.9ms TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:03:55,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2021-10-06 21:03:55,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 862. [2021-10-06 21:03:55,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 861 states have (on average 3.922183507549361) internal successors, (3377), 861 states have internal predecessors, (3377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:55,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 3377 transitions. [2021-10-06 21:03:55,120 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 3377 transitions. Word has length 24 [2021-10-06 21:03:55,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:55,120 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 3377 transitions. [2021-10-06 21:03:55,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:55,120 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 3377 transitions. [2021-10-06 21:03:55,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:03:55,123 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:55,123 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:55,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:55,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:55,328 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:03:55,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:55,329 INFO L82 PathProgramCache]: Analyzing trace with hash 687181086, now seen corresponding path program 10 times [2021-10-06 21:03:55,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:55,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [193283598] [2021-10-06 21:03:55,330 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:03:55,331 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:55,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:55,332 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:55,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-06 21:03:56,155 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:03:56,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:56,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:03:56,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:56,440 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:56,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:56,603 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:56,604 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:56,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [193283598] [2021-10-06 21:03:56,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [193283598] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:03:56,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:03:56,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-10-06 21:03:56,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665775091] [2021-10-06 21:03:56,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:03:56,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:56,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:03:56,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:03:56,606 INFO L87 Difference]: Start difference. First operand 862 states and 3377 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:57,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:57,034 INFO L93 Difference]: Finished difference Result 1418 states and 5286 transitions. [2021-10-06 21:03:57,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:03:57,035 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:03:57,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:57,039 INFO L225 Difference]: With dead ends: 1418 [2021-10-06 21:03:57,040 INFO L226 Difference]: Without dead ends: 1418 [2021-10-06 21:03:57,040 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 263.7ms TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:03:57,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2021-10-06 21:03:57,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 850. [2021-10-06 21:03:57,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 849 states have (on average 3.918727915194346) internal successors, (3327), 849 states have internal predecessors, (3327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:57,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 3327 transitions. [2021-10-06 21:03:57,065 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 3327 transitions. Word has length 24 [2021-10-06 21:03:57,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:57,066 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 3327 transitions. [2021-10-06 21:03:57,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:57,066 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 3327 transitions. [2021-10-06 21:03:57,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:03:57,068 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:57,068 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:57,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:57,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:57,274 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:03:57,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:57,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1143853254, now seen corresponding path program 11 times [2021-10-06 21:03:57,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:57,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [367686100] [2021-10-06 21:03:57,277 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:03:57,277 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:57,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:57,278 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:57,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-06 21:03:58,172 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:03:58,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:58,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:03:58,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:58,541 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:58,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:58,761 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:58,761 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:58,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [367686100] [2021-10-06 21:03:58,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [367686100] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:03:58,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:03:58,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:03:58,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498761021] [2021-10-06 21:03:58,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:03:58,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:58,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:03:58,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:03:58,763 INFO L87 Difference]: Start difference. First operand 850 states and 3327 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:59,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:59,159 INFO L93 Difference]: Finished difference Result 1318 states and 5017 transitions. [2021-10-06 21:03:59,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:03:59,160 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:03:59,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:59,164 INFO L225 Difference]: With dead ends: 1318 [2021-10-06 21:03:59,164 INFO L226 Difference]: Without dead ends: 1318 [2021-10-06 21:03:59,164 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 307.4ms TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:03:59,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2021-10-06 21:03:59,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 858. [2021-10-06 21:03:59,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 857 states have (on average 3.935822637106184) internal successors, (3373), 857 states have internal predecessors, (3373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:59,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 3373 transitions. [2021-10-06 21:03:59,188 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 3373 transitions. Word has length 24 [2021-10-06 21:03:59,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:59,188 INFO L470 AbstractCegarLoop]: Abstraction has 858 states and 3373 transitions. [2021-10-06 21:03:59,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:59,189 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 3373 transitions. [2021-10-06 21:03:59,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:03:59,192 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:59,192 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:59,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Ended with exit code 0 [2021-10-06 21:03:59,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:59,407 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:03:59,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:59,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1888555752, now seen corresponding path program 12 times [2021-10-06 21:03:59,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:59,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022476617] [2021-10-06 21:03:59,409 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:03:59,409 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:59,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:59,411 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:59,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-06 21:04:00,454 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:04:00,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:00,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:04:00,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:00,813 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:00,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:01,031 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:01,032 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:01,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022476617] [2021-10-06 21:04:01,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2022476617] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:04:01,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:04:01,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:04:01,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685997934] [2021-10-06 21:04:01,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:04:01,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:01,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:04:01,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:04:01,034 INFO L87 Difference]: Start difference. First operand 858 states and 3373 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:01,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:01,446 INFO L93 Difference]: Finished difference Result 1306 states and 4985 transitions. [2021-10-06 21:04:01,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:04:01,447 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:04:01,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:01,450 INFO L225 Difference]: With dead ends: 1306 [2021-10-06 21:04:01,450 INFO L226 Difference]: Without dead ends: 1306 [2021-10-06 21:04:01,451 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 333.0ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:04:01,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2021-10-06 21:04:01,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 834. [2021-10-06 21:04:01,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 833 states have (on average 3.907563025210084) internal successors, (3255), 833 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:01,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 3255 transitions. [2021-10-06 21:04:01,470 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 3255 transitions. Word has length 24 [2021-10-06 21:04:01,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:01,470 INFO L470 AbstractCegarLoop]: Abstraction has 834 states and 3255 transitions. [2021-10-06 21:04:01,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:01,470 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 3255 transitions. [2021-10-06 21:04:01,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:04:01,472 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:01,472 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:01,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:01,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:01,673 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:04:01,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:01,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1905958586, now seen corresponding path program 11 times [2021-10-06 21:04:01,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:01,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255406077] [2021-10-06 21:04:01,675 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:04:01,676 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:01,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:01,677 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:01,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-06 21:04:02,624 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:04:02,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:02,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:04:02,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:03,119 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:03,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:03,392 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:03,392 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:03,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [255406077] [2021-10-06 21:04:03,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [255406077] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:04:03,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:04:03,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:04:03,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972404710] [2021-10-06 21:04:03,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:04:03,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:03,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:04:03,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:04:03,394 INFO L87 Difference]: Start difference. First operand 834 states and 3255 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:04,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:04,505 INFO L93 Difference]: Finished difference Result 1120 states and 4062 transitions. [2021-10-06 21:04:04,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:04:04,506 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:04:04,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:04,508 INFO L225 Difference]: With dead ends: 1120 [2021-10-06 21:04:04,508 INFO L226 Difference]: Without dead ends: 1114 [2021-10-06 21:04:04,509 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1055.1ms TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:04:04,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2021-10-06 21:04:04,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 846. [2021-10-06 21:04:04,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 845 states have (on average 3.9254437869822487) internal successors, (3317), 845 states have internal predecessors, (3317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:04,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 3317 transitions. [2021-10-06 21:04:04,527 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 3317 transitions. Word has length 24 [2021-10-06 21:04:04,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:04,527 INFO L470 AbstractCegarLoop]: Abstraction has 846 states and 3317 transitions. [2021-10-06 21:04:04,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:04,527 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 3317 transitions. [2021-10-06 21:04:04,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:04:04,529 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:04,529 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:04,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Ended with exit code 0 [2021-10-06 21:04:04,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:04,730 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:04:04,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:04,731 INFO L82 PathProgramCache]: Analyzing trace with hash 72416052, now seen corresponding path program 12 times [2021-10-06 21:04:04,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:04,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404890387] [2021-10-06 21:04:04,732 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:04:04,732 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:04,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:04,733 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:04,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-06 21:04:05,813 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:04:05,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:05,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:04:05,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:06,336 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:06,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:06,598 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:06,599 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:06,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404890387] [2021-10-06 21:04:06,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404890387] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:04:06,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:04:06,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:04:06,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182589999] [2021-10-06 21:04:06,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:04:06,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:06,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:04:06,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:04:06,601 INFO L87 Difference]: Start difference. First operand 846 states and 3317 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:07,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:07,022 INFO L93 Difference]: Finished difference Result 1118 states and 4082 transitions. [2021-10-06 21:04:07,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:04:07,023 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:04:07,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:07,027 INFO L225 Difference]: With dead ends: 1118 [2021-10-06 21:04:07,027 INFO L226 Difference]: Without dead ends: 1118 [2021-10-06 21:04:07,027 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 372.9ms TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:04:07,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2021-10-06 21:04:07,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 844. [2021-10-06 21:04:07,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 843 states have (on average 3.9288256227758005) internal successors, (3312), 843 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:07,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 3312 transitions. [2021-10-06 21:04:07,064 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 3312 transitions. Word has length 24 [2021-10-06 21:04:07,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:07,064 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 3312 transitions. [2021-10-06 21:04:07,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:07,065 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 3312 transitions. [2021-10-06 21:04:07,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:04:07,067 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:07,068 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:07,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Ended with exit code 0 [2021-10-06 21:04:07,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:07,282 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:04:07,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:07,283 INFO L82 PathProgramCache]: Analyzing trace with hash 835606154, now seen corresponding path program 13 times [2021-10-06 21:04:07,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:07,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783500955] [2021-10-06 21:04:07,284 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:04:07,284 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:07,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:07,286 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:07,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-06 21:04:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:04:08,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:04:08,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:08,692 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:08,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:08,904 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:08,905 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:08,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783500955] [2021-10-06 21:04:08,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783500955] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:04:08,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:04:08,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:04:08,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887295509] [2021-10-06 21:04:08,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:04:08,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:08,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:04:08,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:04:08,907 INFO L87 Difference]: Start difference. First operand 844 states and 3312 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:09,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:09,876 INFO L93 Difference]: Finished difference Result 1268 states and 4670 transitions. [2021-10-06 21:04:09,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:04:09,877 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:04:09,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:09,881 INFO L225 Difference]: With dead ends: 1268 [2021-10-06 21:04:09,881 INFO L226 Difference]: Without dead ends: 1264 [2021-10-06 21:04:09,881 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 768.0ms TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:04:09,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2021-10-06 21:04:09,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 854. [2021-10-06 21:04:09,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 3.94021101992966) internal successors, (3361), 853 states have internal predecessors, (3361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:09,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 3361 transitions. [2021-10-06 21:04:09,901 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 3361 transitions. Word has length 24 [2021-10-06 21:04:09,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:09,902 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 3361 transitions. [2021-10-06 21:04:09,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:09,902 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 3361 transitions. [2021-10-06 21:04:09,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:04:09,904 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:09,904 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:09,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Ended with exit code 0 [2021-10-06 21:04:10,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:10,105 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:04:10,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:10,106 INFO L82 PathProgramCache]: Analyzing trace with hash -674805050, now seen corresponding path program 14 times [2021-10-06 21:04:10,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:10,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [351380564] [2021-10-06 21:04:10,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:04:10,107 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:10,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:10,108 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:10,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-06 21:04:11,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:04:11,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:11,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:04:11,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:11,706 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:11,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:11,933 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:11,933 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:11,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [351380564] [2021-10-06 21:04:11,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [351380564] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:04:11,934 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:04:11,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:04:11,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988997856] [2021-10-06 21:04:11,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:04:11,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:11,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:04:11,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:04:11,935 INFO L87 Difference]: Start difference. First operand 854 states and 3361 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:12,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:12,310 INFO L93 Difference]: Finished difference Result 1162 states and 4414 transitions. [2021-10-06 21:04:12,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:04:12,311 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:04:12,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:12,314 INFO L225 Difference]: With dead ends: 1162 [2021-10-06 21:04:12,314 INFO L226 Difference]: Without dead ends: 1162 [2021-10-06 21:04:12,314 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 337.3ms TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:04:12,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2021-10-06 21:04:12,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 854. [2021-10-06 21:04:12,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 3.94021101992966) internal successors, (3361), 853 states have internal predecessors, (3361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:12,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 3361 transitions. [2021-10-06 21:04:12,344 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 3361 transitions. Word has length 24 [2021-10-06 21:04:12,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:12,344 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 3361 transitions. [2021-10-06 21:04:12,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:12,344 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 3361 transitions. [2021-10-06 21:04:12,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:04:12,346 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:12,346 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:12,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:12,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:12,547 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:04:12,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:12,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1294917122, now seen corresponding path program 13 times [2021-10-06 21:04:12,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:12,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436093237] [2021-10-06 21:04:12,550 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:04:12,550 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:12,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:12,551 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:12,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-06 21:04:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:04:13,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:04:13,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:14,023 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:14,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:14,282 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:14,283 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:14,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436093237] [2021-10-06 21:04:14,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [436093237] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:04:14,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:04:14,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:04:14,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232823085] [2021-10-06 21:04:14,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:04:14,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:14,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:04:14,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:04:14,285 INFO L87 Difference]: Start difference. First operand 854 states and 3361 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:15,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:15,381 INFO L93 Difference]: Finished difference Result 1108 states and 4052 transitions. [2021-10-06 21:04:15,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:04:15,382 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:04:15,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:15,385 INFO L225 Difference]: With dead ends: 1108 [2021-10-06 21:04:15,385 INFO L226 Difference]: Without dead ends: 1102 [2021-10-06 21:04:15,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1045.7ms TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:04:15,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2021-10-06 21:04:15,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 866. [2021-10-06 21:04:15,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 865 states have (on average 3.946820809248555) internal successors, (3414), 865 states have internal predecessors, (3414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:15,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 3414 transitions. [2021-10-06 21:04:15,402 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 3414 transitions. Word has length 24 [2021-10-06 21:04:15,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:15,402 INFO L470 AbstractCegarLoop]: Abstraction has 866 states and 3414 transitions. [2021-10-06 21:04:15,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:15,403 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 3414 transitions. [2021-10-06 21:04:15,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:04:15,405 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:15,405 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:15,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:15,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:15,606 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:04:15,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:15,607 INFO L82 PathProgramCache]: Analyzing trace with hash -764831700, now seen corresponding path program 15 times [2021-10-06 21:04:15,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:15,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040322072] [2021-10-06 21:04:15,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:04:15,608 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:15,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:15,609 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:15,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-06 21:04:16,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:04:16,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:16,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:04:16,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:17,187 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:17,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:17,423 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:17,423 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:17,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1040322072] [2021-10-06 21:04:17,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1040322072] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:04:17,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:04:17,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:04:17,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313475157] [2021-10-06 21:04:17,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:04:17,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:17,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:04:17,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:04:17,425 INFO L87 Difference]: Start difference. First operand 866 states and 3414 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:18,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:18,445 INFO L93 Difference]: Finished difference Result 1276 states and 4714 transitions. [2021-10-06 21:04:18,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:04:18,445 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:04:18,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:18,448 INFO L225 Difference]: With dead ends: 1276 [2021-10-06 21:04:18,448 INFO L226 Difference]: Without dead ends: 1272 [2021-10-06 21:04:18,449 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 793.0ms TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:04:18,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2021-10-06 21:04:18,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 874. [2021-10-06 21:04:18,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 873 states have (on average 3.9495990836197024) internal successors, (3448), 873 states have internal predecessors, (3448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:18,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 3448 transitions. [2021-10-06 21:04:18,468 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 3448 transitions. Word has length 24 [2021-10-06 21:04:18,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:18,468 INFO L470 AbstractCegarLoop]: Abstraction has 874 states and 3448 transitions. [2021-10-06 21:04:18,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:18,468 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 3448 transitions. [2021-10-06 21:04:18,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:04:18,470 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:18,470 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:18,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:18,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:18,671 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:04:18,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:18,672 INFO L82 PathProgramCache]: Analyzing trace with hash 80400552, now seen corresponding path program 16 times [2021-10-06 21:04:18,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:18,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [823632671] [2021-10-06 21:04:18,673 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:04:18,673 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:18,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:18,675 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:18,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-06 21:04:19,666 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:04:19,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:19,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:04:19,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:20,167 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:20,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:20,399 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:20,399 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:20,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [823632671] [2021-10-06 21:04:20,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [823632671] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:04:20,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:04:20,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:04:20,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568706530] [2021-10-06 21:04:20,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:04:20,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:20,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:04:20,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:04:20,401 INFO L87 Difference]: Start difference. First operand 874 states and 3448 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:20,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:20,828 INFO L93 Difference]: Finished difference Result 1174 states and 4483 transitions. [2021-10-06 21:04:20,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:04:20,829 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:04:20,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:20,848 INFO L225 Difference]: With dead ends: 1174 [2021-10-06 21:04:20,849 INFO L226 Difference]: Without dead ends: 1174 [2021-10-06 21:04:20,849 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 376.0ms TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:04:20,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2021-10-06 21:04:20,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 874. [2021-10-06 21:04:20,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 873 states have (on average 3.9495990836197024) internal successors, (3448), 873 states have internal predecessors, (3448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:20,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 3448 transitions. [2021-10-06 21:04:20,867 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 3448 transitions. Word has length 24 [2021-10-06 21:04:20,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:20,868 INFO L470 AbstractCegarLoop]: Abstraction has 874 states and 3448 transitions. [2021-10-06 21:04:20,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:20,868 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 3448 transitions. [2021-10-06 21:04:20,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:04:20,870 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:20,870 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:20,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:21,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:21,071 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:04:21,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:21,073 INFO L82 PathProgramCache]: Analyzing trace with hash 838124758, now seen corresponding path program 14 times [2021-10-06 21:04:21,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:21,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2036417907] [2021-10-06 21:04:21,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:04:21,074 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:21,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:21,075 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:21,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-06 21:04:22,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:04:22,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:22,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:04:22,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:22,693 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:22,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:22,946 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:22,947 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:22,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2036417907] [2021-10-06 21:04:22,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2036417907] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:04:22,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:04:22,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:04:22,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984171890] [2021-10-06 21:04:22,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:04:22,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:22,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:04:22,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:04:22,949 INFO L87 Difference]: Start difference. First operand 874 states and 3448 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:23,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:23,940 INFO L93 Difference]: Finished difference Result 1096 states and 4078 transitions. [2021-10-06 21:04:23,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 21:04:23,941 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:04:23,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:23,943 INFO L225 Difference]: With dead ends: 1096 [2021-10-06 21:04:23,943 INFO L226 Difference]: Without dead ends: 1096 [2021-10-06 21:04:23,944 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 927.5ms TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:04:23,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2021-10-06 21:04:23,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 870. [2021-10-06 21:04:23,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 3.95512082853855) internal successors, (3437), 869 states have internal predecessors, (3437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:23,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 3437 transitions. [2021-10-06 21:04:23,961 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 3437 transitions. Word has length 24 [2021-10-06 21:04:23,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:23,962 INFO L470 AbstractCegarLoop]: Abstraction has 870 states and 3437 transitions. [2021-10-06 21:04:23,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:23,962 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 3437 transitions. [2021-10-06 21:04:23,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:04:23,964 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:23,964 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:23,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:24,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:24,165 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:04:24,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:24,166 INFO L82 PathProgramCache]: Analyzing trace with hash -242409014, now seen corresponding path program 17 times [2021-10-06 21:04:24,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:24,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1403681685] [2021-10-06 21:04:24,168 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:04:24,168 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:24,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:24,169 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:24,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-06 21:04:25,283 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:04:25,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:25,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:04:25,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:25,812 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:25,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:26,063 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:26,063 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:26,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1403681685] [2021-10-06 21:04:26,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1403681685] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:04:26,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:04:26,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:04:26,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526369872] [2021-10-06 21:04:26,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:04:26,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:26,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:04:26,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:04:26,066 INFO L87 Difference]: Start difference. First operand 870 states and 3437 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:26,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:26,510 INFO L93 Difference]: Finished difference Result 1158 states and 4445 transitions. [2021-10-06 21:04:26,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:04:26,512 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:04:26,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:26,516 INFO L225 Difference]: With dead ends: 1158 [2021-10-06 21:04:26,516 INFO L226 Difference]: Without dead ends: 1158 [2021-10-06 21:04:26,516 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 392.6ms TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:04:26,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2021-10-06 21:04:26,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 870. [2021-10-06 21:04:26,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 3.957422324510932) internal successors, (3439), 869 states have internal predecessors, (3439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:26,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 3439 transitions. [2021-10-06 21:04:26,539 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 3439 transitions. Word has length 24 [2021-10-06 21:04:26,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:26,540 INFO L470 AbstractCegarLoop]: Abstraction has 870 states and 3439 transitions. [2021-10-06 21:04:26,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:26,540 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 3439 transitions. [2021-10-06 21:04:26,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:04:26,542 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:26,542 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:26,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Ended with exit code 0 [2021-10-06 21:04:26,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:26,750 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:04:26,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:26,750 INFO L82 PathProgramCache]: Analyzing trace with hash 502293484, now seen corresponding path program 18 times [2021-10-06 21:04:26,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:26,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [653599425] [2021-10-06 21:04:26,752 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:04:26,754 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:26,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:26,755 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:26,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-06 21:04:27,986 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:04:27,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:27,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:04:27,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:28,520 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:28,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:28,764 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:28,764 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:28,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [653599425] [2021-10-06 21:04:28,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [653599425] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:04:28,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:04:28,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:04:28,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022749336] [2021-10-06 21:04:28,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:04:28,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:28,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:04:28,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:04:28,767 INFO L87 Difference]: Start difference. First operand 870 states and 3439 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:29,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:29,231 INFO L93 Difference]: Finished difference Result 1146 states and 4413 transitions. [2021-10-06 21:04:29,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:04:29,233 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:04:29,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:29,235 INFO L225 Difference]: With dead ends: 1146 [2021-10-06 21:04:29,235 INFO L226 Difference]: Without dead ends: 1146 [2021-10-06 21:04:29,236 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 390.8ms TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:04:29,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2021-10-06 21:04:29,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 854. [2021-10-06 21:04:29,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 3.933177022274326) internal successors, (3355), 853 states have internal predecessors, (3355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:29,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 3355 transitions. [2021-10-06 21:04:29,254 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 3355 transitions. Word has length 24 [2021-10-06 21:04:29,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:29,255 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 3355 transitions. [2021-10-06 21:04:29,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:29,255 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 3355 transitions. [2021-10-06 21:04:29,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:04:29,257 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:29,258 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:29,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Ended with exit code 0 [2021-10-06 21:04:29,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:29,458 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:04:29,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:29,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1772204892, now seen corresponding path program 15 times [2021-10-06 21:04:29,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:29,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [866412047] [2021-10-06 21:04:29,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:04:29,461 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:29,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:29,462 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:29,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-06 21:04:30,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:04:30,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:30,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:04:30,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:31,219 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:31,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:31,499 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:31,500 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:31,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [866412047] [2021-10-06 21:04:31,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [866412047] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:04:31,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:04:31,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:04:31,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064928306] [2021-10-06 21:04:31,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:04:31,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:31,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:04:31,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:04:31,501 INFO L87 Difference]: Start difference. First operand 854 states and 3355 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:31,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:31,932 INFO L93 Difference]: Finished difference Result 1066 states and 3944 transitions. [2021-10-06 21:04:31,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:04:31,933 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:04:31,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:31,935 INFO L225 Difference]: With dead ends: 1066 [2021-10-06 21:04:31,936 INFO L226 Difference]: Without dead ends: 1066 [2021-10-06 21:04:31,936 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 381.2ms TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:04:31,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-10-06 21:04:31,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 854. [2021-10-06 21:04:31,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 3.9355216881594375) internal successors, (3357), 853 states have internal predecessors, (3357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:31,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 3357 transitions. [2021-10-06 21:04:31,952 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 3357 transitions. Word has length 24 [2021-10-06 21:04:31,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:31,952 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 3357 transitions. [2021-10-06 21:04:31,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:31,952 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 3357 transitions. [2021-10-06 21:04:31,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:04:31,954 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:31,955 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:31,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Ended with exit code 0 [2021-10-06 21:04:32,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:32,156 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:04:32,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:32,156 INFO L82 PathProgramCache]: Analyzing trace with hash 577583550, now seen corresponding path program 16 times [2021-10-06 21:04:32,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:32,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1421495262] [2021-10-06 21:04:32,158 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:04:32,158 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:32,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:32,159 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:32,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-06 21:04:33,273 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:04:33,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:33,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:04:33,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:33,848 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:33,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:34,143 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:34,143 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:34,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1421495262] [2021-10-06 21:04:34,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1421495262] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:04:34,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:04:34,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:04:34,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385295748] [2021-10-06 21:04:34,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:04:34,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:34,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:04:34,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:04:34,145 INFO L87 Difference]: Start difference. First operand 854 states and 3357 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:34,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:34,567 INFO L93 Difference]: Finished difference Result 1050 states and 3906 transitions. [2021-10-06 21:04:34,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:04:34,568 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:04:34,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:34,570 INFO L225 Difference]: With dead ends: 1050 [2021-10-06 21:04:34,570 INFO L226 Difference]: Without dead ends: 1050 [2021-10-06 21:04:34,570 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 366.3ms TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:04:34,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2021-10-06 21:04:34,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 846. [2021-10-06 21:04:34,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 845 states have (on average 3.927810650887574) internal successors, (3319), 845 states have internal predecessors, (3319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:34,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 3319 transitions. [2021-10-06 21:04:34,588 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 3319 transitions. Word has length 24 [2021-10-06 21:04:34,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:34,588 INFO L470 AbstractCegarLoop]: Abstraction has 846 states and 3319 transitions. [2021-10-06 21:04:34,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:34,588 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 3319 transitions. [2021-10-06 21:04:34,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:04:34,591 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:34,591 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:34,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:34,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:34,805 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:04:34,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:34,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1651682740, now seen corresponding path program 17 times [2021-10-06 21:04:34,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:34,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163500316] [2021-10-06 21:04:34,807 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:04:34,807 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:34,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:34,809 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:34,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-10-06 21:04:36,060 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:04:36,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:36,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:04:36,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:36,398 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:36,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:36,574 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:36,574 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:36,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163500316] [2021-10-06 21:04:36,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163500316] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:04:36,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:04:36,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-10-06 21:04:36,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830778282] [2021-10-06 21:04:36,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:04:36,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:36,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:04:36,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:04:36,576 INFO L87 Difference]: Start difference. First operand 846 states and 3319 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:36,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:36,924 INFO L93 Difference]: Finished difference Result 1260 states and 4617 transitions. [2021-10-06 21:04:36,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:04:36,929 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:04:36,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:36,933 INFO L225 Difference]: With dead ends: 1260 [2021-10-06 21:04:36,934 INFO L226 Difference]: Without dead ends: 1260 [2021-10-06 21:04:36,934 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 265.0ms TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:04:36,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2021-10-06 21:04:36,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 858. [2021-10-06 21:04:36,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 857 states have (on average 3.9334889148191365) internal successors, (3371), 857 states have internal predecessors, (3371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:36,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 3371 transitions. [2021-10-06 21:04:36,957 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 3371 transitions. Word has length 24 [2021-10-06 21:04:36,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:36,957 INFO L470 AbstractCegarLoop]: Abstraction has 858 states and 3371 transitions. [2021-10-06 21:04:36,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:36,957 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 3371 transitions. [2021-10-06 21:04:36,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:04:36,959 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:36,959 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:36,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:37,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:37,160 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:04:37,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:37,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1947131532, now seen corresponding path program 18 times [2021-10-06 21:04:37,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:37,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274060931] [2021-10-06 21:04:37,162 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:04:37,162 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:37,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:37,164 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:37,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-10-06 21:04:38,515 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:04:38,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:38,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:04:38,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:38,848 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:38,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:39,058 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:39,059 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:39,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274060931] [2021-10-06 21:04:39,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1274060931] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:04:39,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:04:39,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:04:39,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131800458] [2021-10-06 21:04:39,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:04:39,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:39,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:04:39,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:04:39,061 INFO L87 Difference]: Start difference. First operand 858 states and 3371 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:40,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:40,038 INFO L93 Difference]: Finished difference Result 1240 states and 4520 transitions. [2021-10-06 21:04:40,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:04:40,042 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:04:40,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:40,047 INFO L225 Difference]: With dead ends: 1240 [2021-10-06 21:04:40,047 INFO L226 Difference]: Without dead ends: 1234 [2021-10-06 21:04:40,047 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 719.7ms TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:04:40,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2021-10-06 21:04:40,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 864. [2021-10-06 21:04:40,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 863 states have (on average 3.93279258400927) internal successors, (3394), 863 states have internal predecessors, (3394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:40,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 3394 transitions. [2021-10-06 21:04:40,077 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 3394 transitions. Word has length 24 [2021-10-06 21:04:40,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:40,077 INFO L470 AbstractCegarLoop]: Abstraction has 864 states and 3394 transitions. [2021-10-06 21:04:40,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:40,078 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 3394 transitions. [2021-10-06 21:04:40,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:04:40,081 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:40,081 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:40,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:40,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:40,295 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:04:40,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:40,296 INFO L82 PathProgramCache]: Analyzing trace with hash 514293230, now seen corresponding path program 19 times [2021-10-06 21:04:40,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:40,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2011975059] [2021-10-06 21:04:40,297 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:04:40,297 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:40,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:40,299 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:40,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-10-06 21:04:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:04:41,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:04:41,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:41,890 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:41,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:42,115 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:42,115 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:42,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2011975059] [2021-10-06 21:04:42,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2011975059] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:04:42,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:04:42,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:04:42,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500039006] [2021-10-06 21:04:42,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:04:42,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:42,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:04:42,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:04:42,118 INFO L87 Difference]: Start difference. First operand 864 states and 3394 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:42,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:42,541 INFO L93 Difference]: Finished difference Result 1232 states and 4521 transitions. [2021-10-06 21:04:42,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:04:42,542 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:04:42,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:42,544 INFO L225 Difference]: With dead ends: 1232 [2021-10-06 21:04:42,544 INFO L226 Difference]: Without dead ends: 1232 [2021-10-06 21:04:42,544 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 342.8ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:04:42,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2021-10-06 21:04:42,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 860. [2021-10-06 21:04:42,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 859 states have (on average 3.939464493597206) internal successors, (3384), 859 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:42,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 3384 transitions. [2021-10-06 21:04:42,561 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 3384 transitions. Word has length 24 [2021-10-06 21:04:42,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:42,562 INFO L470 AbstractCegarLoop]: Abstraction has 860 states and 3384 transitions. [2021-10-06 21:04:42,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:42,562 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 3384 transitions. [2021-10-06 21:04:42,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:04:42,564 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:42,564 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:42,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:42,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:42,765 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:04:42,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:42,766 INFO L82 PathProgramCache]: Analyzing trace with hash -37334942, now seen corresponding path program 19 times [2021-10-06 21:04:42,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:42,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449847197] [2021-10-06 21:04:42,767 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:04:42,767 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:42,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:42,769 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:42,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-10-06 21:04:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:04:43,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:04:43,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:44,231 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:44,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:44,389 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:44,389 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:44,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [449847197] [2021-10-06 21:04:44,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [449847197] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:04:44,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:04:44,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-10-06 21:04:44,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569969758] [2021-10-06 21:04:44,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:04:44,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:44,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:04:44,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:04:44,391 INFO L87 Difference]: Start difference. First operand 860 states and 3384 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:44,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:44,754 INFO L93 Difference]: Finished difference Result 1110 states and 4232 transitions. [2021-10-06 21:04:44,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:04:44,755 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:04:44,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:44,757 INFO L225 Difference]: With dead ends: 1110 [2021-10-06 21:04:44,757 INFO L226 Difference]: Without dead ends: 1110 [2021-10-06 21:04:44,758 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 237.8ms TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:04:44,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2021-10-06 21:04:44,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 870. [2021-10-06 21:04:44,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 3.9413118527042577) internal successors, (3425), 869 states have internal predecessors, (3425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:44,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 3425 transitions. [2021-10-06 21:04:44,774 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 3425 transitions. Word has length 24 [2021-10-06 21:04:44,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:44,774 INFO L470 AbstractCegarLoop]: Abstraction has 870 states and 3425 transitions. [2021-10-06 21:04:44,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:44,774 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 3425 transitions. [2021-10-06 21:04:44,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:04:44,776 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:44,776 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:44,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:44,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:44,977 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:04:44,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:44,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1091449886, now seen corresponding path program 20 times [2021-10-06 21:04:44,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:44,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227928098] [2021-10-06 21:04:44,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:04:44,980 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:44,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:44,981 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:44,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2021-10-06 21:04:46,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:04:46,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:46,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:04:46,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:46,628 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:46,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:46,808 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:46,809 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:46,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227928098] [2021-10-06 21:04:46,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227928098] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:04:46,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:04:46,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:04:46,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011880299] [2021-10-06 21:04:46,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:04:46,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:46,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:04:46,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:04:46,810 INFO L87 Difference]: Start difference. First operand 870 states and 3425 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:47,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:47,686 INFO L93 Difference]: Finished difference Result 1144 states and 4288 transitions. [2021-10-06 21:04:47,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:04:47,686 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:04:47,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:47,690 INFO L225 Difference]: With dead ends: 1144 [2021-10-06 21:04:47,690 INFO L226 Difference]: Without dead ends: 1140 [2021-10-06 21:04:47,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 644.0ms TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:04:47,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2021-10-06 21:04:47,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 876. [2021-10-06 21:04:47,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 875 states have (on average 3.9405714285714284) internal successors, (3448), 875 states have internal predecessors, (3448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:47,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 3448 transitions. [2021-10-06 21:04:47,707 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 3448 transitions. Word has length 24 [2021-10-06 21:04:47,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:47,707 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 3448 transitions. [2021-10-06 21:04:47,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:47,708 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 3448 transitions. [2021-10-06 21:04:47,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:04:47,709 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:47,710 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:47,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:47,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:47,911 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:04:47,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:47,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1693106206, now seen corresponding path program 21 times [2021-10-06 21:04:47,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:47,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [144502415] [2021-10-06 21:04:47,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:04:47,913 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:47,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:47,915 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:47,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2021-10-06 21:04:49,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:04:49,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:49,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:04:49,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:49,597 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:49,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:49,787 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:49,788 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:49,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [144502415] [2021-10-06 21:04:49,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [144502415] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:04:49,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:04:49,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:04:49,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658532527] [2021-10-06 21:04:49,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:04:49,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:49,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:04:49,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:04:49,789 INFO L87 Difference]: Start difference. First operand 876 states and 3448 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:50,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:50,165 INFO L93 Difference]: Finished difference Result 1066 states and 4096 transitions. [2021-10-06 21:04:50,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:04:50,166 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:04:50,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:50,168 INFO L225 Difference]: With dead ends: 1066 [2021-10-06 21:04:50,168 INFO L226 Difference]: Without dead ends: 1066 [2021-10-06 21:04:50,169 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 301.0ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:04:50,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-10-06 21:04:50,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 874. [2021-10-06 21:04:50,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 873 states have (on average 3.943871706758305) internal successors, (3443), 873 states have internal predecessors, (3443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:50,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 3443 transitions. [2021-10-06 21:04:50,185 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 3443 transitions. Word has length 24 [2021-10-06 21:04:50,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:50,185 INFO L470 AbstractCegarLoop]: Abstraction has 874 states and 3443 transitions. [2021-10-06 21:04:50,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:50,185 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 3443 transitions. [2021-10-06 21:04:50,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:04:50,187 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:50,187 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:50,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:50,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:50,388 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:04:50,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:50,389 INFO L82 PathProgramCache]: Analyzing trace with hash 482040286, now seen corresponding path program 22 times [2021-10-06 21:04:50,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:50,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [645930005] [2021-10-06 21:04:50,390 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:04:50,391 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:50,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:50,391 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:50,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2021-10-06 21:04:51,645 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:04:51,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:51,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:04:51,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:51,935 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:51,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:52,106 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:52,106 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:52,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [645930005] [2021-10-06 21:04:52,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [645930005] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:04:52,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:04:52,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-10-06 21:04:52,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140711180] [2021-10-06 21:04:52,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:04:52,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:52,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:04:52,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:04:52,108 INFO L87 Difference]: Start difference. First operand 874 states and 3443 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:52,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:52,487 INFO L93 Difference]: Finished difference Result 1252 states and 4773 transitions. [2021-10-06 21:04:52,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:04:52,488 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:04:52,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:52,491 INFO L225 Difference]: With dead ends: 1252 [2021-10-06 21:04:52,491 INFO L226 Difference]: Without dead ends: 1252 [2021-10-06 21:04:52,491 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 255.4ms TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:04:52,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2021-10-06 21:04:52,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 870. [2021-10-06 21:04:52,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 3.9436133486766396) internal successors, (3427), 869 states have internal predecessors, (3427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:52,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 3427 transitions. [2021-10-06 21:04:52,508 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 3427 transitions. Word has length 24 [2021-10-06 21:04:52,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:52,508 INFO L470 AbstractCegarLoop]: Abstraction has 870 states and 3427 transitions. [2021-10-06 21:04:52,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:52,508 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 3427 transitions. [2021-10-06 21:04:52,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:04:52,510 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:52,510 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:52,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:52,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:52,712 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:04:52,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:52,713 INFO L82 PathProgramCache]: Analyzing trace with hash -121459692, now seen corresponding path program 23 times [2021-10-06 21:04:52,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:52,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [704007974] [2021-10-06 21:04:52,714 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:04:52,714 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:52,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:52,715 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:52,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2021-10-06 21:04:54,051 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:04:54,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:54,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:04:54,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:54,396 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:54,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:54,612 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:54,612 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:54,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [704007974] [2021-10-06 21:04:54,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [704007974] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:04:54,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:04:54,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:04:54,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465542490] [2021-10-06 21:04:54,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:04:54,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:54,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:04:54,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:04:54,614 INFO L87 Difference]: Start difference. First operand 870 states and 3427 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:55,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:55,056 INFO L93 Difference]: Finished difference Result 1252 states and 4810 transitions. [2021-10-06 21:04:55,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:04:55,057 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:04:55,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:55,061 INFO L225 Difference]: With dead ends: 1252 [2021-10-06 21:04:55,061 INFO L226 Difference]: Without dead ends: 1252 [2021-10-06 21:04:55,061 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 333.9ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:04:55,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2021-10-06 21:04:55,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 878. [2021-10-06 21:04:55,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 877 states have (on average 3.960091220068415) internal successors, (3473), 877 states have internal predecessors, (3473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:55,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 3473 transitions. [2021-10-06 21:04:55,081 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 3473 transitions. Word has length 24 [2021-10-06 21:04:55,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:55,082 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 3473 transitions. [2021-10-06 21:04:55,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:55,082 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 3473 transitions. [2021-10-06 21:04:55,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:04:55,084 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:55,084 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:55,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:55,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:55,285 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:04:55,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:55,286 INFO L82 PathProgramCache]: Analyzing trace with hash 623242806, now seen corresponding path program 24 times [2021-10-06 21:04:55,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:55,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682787489] [2021-10-06 21:04:55,287 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:04:55,288 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:55,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:55,289 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:55,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2021-10-06 21:04:56,759 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:04:56,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:56,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:04:56,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:57,120 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:57,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:57,323 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:57,323 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:57,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682787489] [2021-10-06 21:04:57,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1682787489] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:04:57,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:04:57,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:04:57,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986723304] [2021-10-06 21:04:57,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:04:57,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:57,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:04:57,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:04:57,325 INFO L87 Difference]: Start difference. First operand 878 states and 3473 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:57,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:57,723 INFO L93 Difference]: Finished difference Result 1218 states and 4719 transitions. [2021-10-06 21:04:57,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:04:57,724 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:04:57,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:57,727 INFO L225 Difference]: With dead ends: 1218 [2021-10-06 21:04:57,727 INFO L226 Difference]: Without dead ends: 1218 [2021-10-06 21:04:57,727 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 317.1ms TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:04:57,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2021-10-06 21:04:57,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 862. [2021-10-06 21:04:57,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 861 states have (on average 3.9361207897793262) internal successors, (3389), 861 states have internal predecessors, (3389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:57,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 3389 transitions. [2021-10-06 21:04:57,745 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 3389 transitions. Word has length 24 [2021-10-06 21:04:57,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:57,746 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 3389 transitions. [2021-10-06 21:04:57,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:57,746 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 3389 transitions. [2021-10-06 21:04:57,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:04:57,749 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:57,749 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:57,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:57,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:57,964 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:04:57,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:57,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1489438068, now seen corresponding path program 20 times [2021-10-06 21:04:57,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:57,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288947873] [2021-10-06 21:04:57,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:04:57,967 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:57,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:57,968 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:57,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2021-10-06 21:04:59,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:04:59,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:59,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:04:59,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:59,650 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:59,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:59,835 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:04:59,835 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:59,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288947873] [2021-10-06 21:04:59,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [288947873] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:04:59,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:04:59,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-10-06 21:04:59,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360583703] [2021-10-06 21:04:59,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:04:59,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:59,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:04:59,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:04:59,837 INFO L87 Difference]: Start difference. First operand 862 states and 3389 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:00,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:00,256 INFO L93 Difference]: Finished difference Result 1184 states and 4399 transitions. [2021-10-06 21:05:00,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:05:00,257 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:05:00,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:00,260 INFO L225 Difference]: With dead ends: 1184 [2021-10-06 21:05:00,260 INFO L226 Difference]: Without dead ends: 1184 [2021-10-06 21:05:00,260 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 272.8ms TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:05:00,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2021-10-06 21:05:00,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 858. [2021-10-06 21:05:00,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 857 states have (on average 3.935822637106184) internal successors, (3373), 857 states have internal predecessors, (3373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:00,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 3373 transitions. [2021-10-06 21:05:00,277 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 3373 transitions. Word has length 24 [2021-10-06 21:05:00,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:00,277 INFO L470 AbstractCegarLoop]: Abstraction has 858 states and 3373 transitions. [2021-10-06 21:05:00,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:00,277 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 3373 transitions. [2021-10-06 21:05:00,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:05:00,279 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:00,279 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:00,292 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Ended with exit code 0 [2021-10-06 21:05:00,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:00,480 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:05:00,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:00,481 INFO L82 PathProgramCache]: Analyzing trace with hash -2082434942, now seen corresponding path program 21 times [2021-10-06 21:05:00,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:00,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274765670] [2021-10-06 21:05:00,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:05:00,482 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:00,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:00,483 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:00,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2021-10-06 21:05:01,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:05:01,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:01,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:05:01,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:02,289 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:02,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:02,523 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:02,524 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:02,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274765670] [2021-10-06 21:05:02,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [274765670] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:05:02,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:05:02,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:05:02,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095182444] [2021-10-06 21:05:02,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:05:02,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:02,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:05:02,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:05:02,525 INFO L87 Difference]: Start difference. First operand 858 states and 3373 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:03,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:03,026 INFO L93 Difference]: Finished difference Result 1156 states and 4345 transitions. [2021-10-06 21:05:03,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:05:03,027 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:05:03,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:03,031 INFO L225 Difference]: With dead ends: 1156 [2021-10-06 21:05:03,031 INFO L226 Difference]: Without dead ends: 1156 [2021-10-06 21:05:03,031 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 352.8ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:05:03,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2021-10-06 21:05:03,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 866. [2021-10-06 21:05:03,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 865 states have (on average 3.952601156069364) internal successors, (3419), 865 states have internal predecessors, (3419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:03,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 3419 transitions. [2021-10-06 21:05:03,049 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 3419 transitions. Word has length 24 [2021-10-06 21:05:03,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:03,050 INFO L470 AbstractCegarLoop]: Abstraction has 866 states and 3419 transitions. [2021-10-06 21:05:03,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:03,050 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 3419 transitions. [2021-10-06 21:05:03,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:05:03,052 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:03,052 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:03,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:03,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:03,253 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:05:03,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:03,254 INFO L82 PathProgramCache]: Analyzing trace with hash -593029946, now seen corresponding path program 22 times [2021-10-06 21:05:03,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:03,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [522281097] [2021-10-06 21:05:03,255 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:05:03,255 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:03,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:03,256 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:03,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2021-10-06 21:05:04,565 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:05:04,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:04,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:05:04,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:04,948 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:04,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:05,181 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:05,181 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:05,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [522281097] [2021-10-06 21:05:05,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [522281097] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:05:05,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:05:05,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:05:05,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789119788] [2021-10-06 21:05:05,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:05:05,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:05,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:05:05,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:05:05,182 INFO L87 Difference]: Start difference. First operand 866 states and 3419 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:05,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:05,586 INFO L93 Difference]: Finished difference Result 1122 states and 4255 transitions. [2021-10-06 21:05:05,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:05:05,587 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:05:05,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:05,591 INFO L225 Difference]: With dead ends: 1122 [2021-10-06 21:05:05,591 INFO L226 Difference]: Without dead ends: 1122 [2021-10-06 21:05:05,591 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 317.7ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:05:05,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2021-10-06 21:05:05,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 858. [2021-10-06 21:05:05,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 857 states have (on average 3.935822637106184) internal successors, (3373), 857 states have internal predecessors, (3373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:05,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 3373 transitions. [2021-10-06 21:05:05,608 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 3373 transitions. Word has length 24 [2021-10-06 21:05:05,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:05,609 INFO L470 AbstractCegarLoop]: Abstraction has 858 states and 3373 transitions. [2021-10-06 21:05:05,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:05,609 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 3373 transitions. [2021-10-06 21:05:05,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:05:05,611 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:05,611 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:05,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:05,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:05,812 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:05:05,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:05,812 INFO L82 PathProgramCache]: Analyzing trace with hash -163991352, now seen corresponding path program 23 times [2021-10-06 21:05:05,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:05,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225670014] [2021-10-06 21:05:05,813 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:05:05,813 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:05,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:05,814 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:05,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2021-10-06 21:05:07,213 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:05:07,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:07,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:05:07,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:07,676 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:07,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:07,908 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:07,908 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:07,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225670014] [2021-10-06 21:05:07,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225670014] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:05:07,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:05:07,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:05:07,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382950684] [2021-10-06 21:05:07,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:05:07,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:07,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:05:07,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:05:07,910 INFO L87 Difference]: Start difference. First operand 858 states and 3373 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:09,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:09,104 INFO L93 Difference]: Finished difference Result 1244 states and 4588 transitions. [2021-10-06 21:05:09,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:05:09,105 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:05:09,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:09,108 INFO L225 Difference]: With dead ends: 1244 [2021-10-06 21:05:09,108 INFO L226 Difference]: Without dead ends: 1238 [2021-10-06 21:05:09,108 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 971.9ms TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:05:09,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2021-10-06 21:05:09,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 870. [2021-10-06 21:05:09,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 3.952819332566168) internal successors, (3435), 869 states have internal predecessors, (3435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:09,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 3435 transitions. [2021-10-06 21:05:09,126 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 3435 transitions. Word has length 24 [2021-10-06 21:05:09,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:09,126 INFO L470 AbstractCegarLoop]: Abstraction has 870 states and 3435 transitions. [2021-10-06 21:05:09,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:09,126 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 3435 transitions. [2021-10-06 21:05:09,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:05:09,128 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:09,128 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:09,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:09,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:09,342 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:05:09,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:09,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1997533886, now seen corresponding path program 24 times [2021-10-06 21:05:09,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:09,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142804109] [2021-10-06 21:05:09,344 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:05:09,344 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:09,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:09,345 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:09,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2021-10-06 21:05:10,824 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:05:10,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:10,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:05:10,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:11,273 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:11,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:11,531 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:11,531 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:11,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142804109] [2021-10-06 21:05:11,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142804109] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:05:11,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:05:11,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:05:11,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451273443] [2021-10-06 21:05:11,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:05:11,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:11,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:05:11,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:05:11,533 INFO L87 Difference]: Start difference. First operand 870 states and 3435 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:11,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:11,985 INFO L93 Difference]: Finished difference Result 1244 states and 4616 transitions. [2021-10-06 21:05:11,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:05:11,986 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:05:11,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:11,988 INFO L225 Difference]: With dead ends: 1244 [2021-10-06 21:05:11,989 INFO L226 Difference]: Without dead ends: 1244 [2021-10-06 21:05:11,989 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 379.4ms TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:05:11,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2021-10-06 21:05:12,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 868. [2021-10-06 21:05:12,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 867 states have (on average 3.956170703575548) internal successors, (3430), 867 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:12,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 3430 transitions. [2021-10-06 21:05:12,010 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 3430 transitions. Word has length 24 [2021-10-06 21:05:12,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:12,010 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 3430 transitions. [2021-10-06 21:05:12,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:12,010 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 3430 transitions. [2021-10-06 21:05:12,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:05:12,012 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:12,012 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:12,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Ended with exit code 0 [2021-10-06 21:05:12,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:12,213 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:05:12,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:12,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1234343784, now seen corresponding path program 25 times [2021-10-06 21:05:12,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:12,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836921612] [2021-10-06 21:05:12,216 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:05:12,216 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:12,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:12,218 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:12,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2021-10-06 21:05:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:05:13,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:05:13,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:14,026 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:14,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:14,230 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:14,231 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:14,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [836921612] [2021-10-06 21:05:14,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [836921612] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:05:14,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:05:14,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:05:14,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423871394] [2021-10-06 21:05:14,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:05:14,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:14,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:05:14,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:05:14,233 INFO L87 Difference]: Start difference. First operand 868 states and 3430 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:15,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:15,298 INFO L93 Difference]: Finished difference Result 1232 states and 4588 transitions. [2021-10-06 21:05:15,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:05:15,299 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:05:15,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:15,302 INFO L225 Difference]: With dead ends: 1232 [2021-10-06 21:05:15,302 INFO L226 Difference]: Without dead ends: 1228 [2021-10-06 21:05:15,302 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 803.3ms TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:05:15,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2021-10-06 21:05:15,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 878. [2021-10-06 21:05:15,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 877 states have (on average 3.966932725199544) internal successors, (3479), 877 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:15,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 3479 transitions. [2021-10-06 21:05:15,321 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 3479 transitions. Word has length 24 [2021-10-06 21:05:15,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:15,322 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 3479 transitions. [2021-10-06 21:05:15,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:15,322 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 3479 transitions. [2021-10-06 21:05:15,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:05:15,324 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:15,324 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:15,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Ended with exit code 0 [2021-10-06 21:05:15,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:15,525 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:05:15,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:15,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1550212308, now seen corresponding path program 26 times [2021-10-06 21:05:15,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:15,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405039574] [2021-10-06 21:05:15,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:05:15,528 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:15,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:15,529 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:15,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2021-10-06 21:05:17,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:05:17,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:17,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:05:17,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:17,470 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:17,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:17,696 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:17,697 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:17,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405039574] [2021-10-06 21:05:17,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405039574] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:05:17,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:05:17,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:05:17,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063273204] [2021-10-06 21:05:17,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:05:17,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:17,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:05:17,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:05:17,698 INFO L87 Difference]: Start difference. First operand 878 states and 3479 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:18,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:18,158 INFO L93 Difference]: Finished difference Result 1156 states and 4407 transitions. [2021-10-06 21:05:18,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:05:18,159 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:05:18,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:18,162 INFO L225 Difference]: With dead ends: 1156 [2021-10-06 21:05:18,162 INFO L226 Difference]: Without dead ends: 1156 [2021-10-06 21:05:18,162 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 383.3ms TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:05:18,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2021-10-06 21:05:18,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 876. [2021-10-06 21:05:18,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 875 states have (on average 3.970285714285714) internal successors, (3474), 875 states have internal predecessors, (3474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:18,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 3474 transitions. [2021-10-06 21:05:18,181 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 3474 transitions. Word has length 24 [2021-10-06 21:05:18,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:18,181 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 3474 transitions. [2021-10-06 21:05:18,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:18,181 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 3474 transitions. [2021-10-06 21:05:18,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:05:18,183 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:18,183 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:18,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:18,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:18,384 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:05:18,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:18,385 INFO L82 PathProgramCache]: Analyzing trace with hash 930100236, now seen corresponding path program 25 times [2021-10-06 21:05:18,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:18,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655305191] [2021-10-06 21:05:18,386 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:05:18,387 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:18,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:18,387 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:18,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2021-10-06 21:05:19,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:05:19,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:05:19,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:20,225 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:20,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:20,448 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:20,448 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:20,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655305191] [2021-10-06 21:05:20,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655305191] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:05:20,449 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:05:20,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:05:20,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683210799] [2021-10-06 21:05:20,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:05:20,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:20,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:05:20,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:05:20,450 INFO L87 Difference]: Start difference. First operand 876 states and 3474 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:21,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:21,494 INFO L93 Difference]: Finished difference Result 1222 states and 4551 transitions. [2021-10-06 21:05:21,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:05:21,495 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:05:21,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:21,497 INFO L225 Difference]: With dead ends: 1222 [2021-10-06 21:05:21,497 INFO L226 Difference]: Without dead ends: 1216 [2021-10-06 21:05:21,497 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 909.5ms TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:05:21,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2021-10-06 21:05:21,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 888. [2021-10-06 21:05:21,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 888 states, 887 states have (on average 3.976324689966178) internal successors, (3527), 887 states have internal predecessors, (3527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:21,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 3527 transitions. [2021-10-06 21:05:21,516 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 3527 transitions. Word has length 24 [2021-10-06 21:05:21,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:21,517 INFO L470 AbstractCegarLoop]: Abstraction has 888 states and 3527 transitions. [2021-10-06 21:05:21,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:21,517 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 3527 transitions. [2021-10-06 21:05:21,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:05:21,519 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:21,519 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:21,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:21,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:21,720 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:05:21,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:21,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1460185658, now seen corresponding path program 27 times [2021-10-06 21:05:21,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:21,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769439515] [2021-10-06 21:05:21,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:05:21,722 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:21,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:21,723 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:21,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2021-10-06 21:05:23,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:05:23,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:23,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:05:23,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:23,638 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:23,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:23,859 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:23,859 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:23,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769439515] [2021-10-06 21:05:23,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1769439515] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:05:23,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:05:23,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:05:23,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582855192] [2021-10-06 21:05:23,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:05:23,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:23,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:05:23,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:05:23,861 INFO L87 Difference]: Start difference. First operand 888 states and 3527 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:24,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:24,915 INFO L93 Difference]: Finished difference Result 1212 states and 4553 transitions. [2021-10-06 21:05:24,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:05:24,916 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:05:24,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:24,918 INFO L225 Difference]: With dead ends: 1212 [2021-10-06 21:05:24,919 INFO L226 Difference]: Without dead ends: 1208 [2021-10-06 21:05:24,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 756.4ms TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:05:24,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2021-10-06 21:05:24,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 896. [2021-10-06 21:05:24,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 895 states have (on average 3.9787709497206705) internal successors, (3561), 895 states have internal predecessors, (3561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:24,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 3561 transitions. [2021-10-06 21:05:24,938 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 3561 transitions. Word has length 24 [2021-10-06 21:05:24,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:24,938 INFO L470 AbstractCegarLoop]: Abstraction has 896 states and 3561 transitions. [2021-10-06 21:05:24,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:24,938 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 3561 transitions. [2021-10-06 21:05:24,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:05:24,940 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:24,940 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:24,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:25,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:25,141 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:05:25,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:25,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1989549386, now seen corresponding path program 28 times [2021-10-06 21:05:25,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:25,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20212701] [2021-10-06 21:05:25,144 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:05:25,144 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:25,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:25,146 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:25,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2021-10-06 21:05:26,586 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:05:26,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:26,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:05:26,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:26,998 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:26,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:27,213 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:27,213 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:27,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20212701] [2021-10-06 21:05:27,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20212701] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:05:27,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:05:27,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:05:27,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107067480] [2021-10-06 21:05:27,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:05:27,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:27,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:05:27,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:05:27,215 INFO L87 Difference]: Start difference. First operand 896 states and 3561 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:27,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:27,618 INFO L93 Difference]: Finished difference Result 1140 states and 4397 transitions. [2021-10-06 21:05:27,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:05:27,619 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:05:27,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:27,621 INFO L225 Difference]: With dead ends: 1140 [2021-10-06 21:05:27,621 INFO L226 Difference]: Without dead ends: 1140 [2021-10-06 21:05:27,622 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 341.9ms TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:05:27,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2021-10-06 21:05:27,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 896. [2021-10-06 21:05:27,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 895 states have (on average 3.9787709497206705) internal successors, (3561), 895 states have internal predecessors, (3561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:27,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 3561 transitions. [2021-10-06 21:05:27,642 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 3561 transitions. Word has length 24 [2021-10-06 21:05:27,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:27,643 INFO L470 AbstractCegarLoop]: Abstraction has 896 states and 3561 transitions. [2021-10-06 21:05:27,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:27,643 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 3561 transitions. [2021-10-06 21:05:27,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:05:27,646 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:27,646 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:27,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:27,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:27,848 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:05:27,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:27,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1231825180, now seen corresponding path program 26 times [2021-10-06 21:05:27,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:27,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64751045] [2021-10-06 21:05:27,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:05:27,850 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:27,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:27,852 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:27,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2021-10-06 21:05:29,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:05:29,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:29,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:05:29,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:29,891 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:29,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:30,124 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:30,124 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:30,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64751045] [2021-10-06 21:05:30,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64751045] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:05:30,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:05:30,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:05:30,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547987157] [2021-10-06 21:05:30,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:05:30,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:30,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:05:30,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:05:30,127 INFO L87 Difference]: Start difference. First operand 896 states and 3561 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:31,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:31,073 INFO L93 Difference]: Finished difference Result 1222 states and 4610 transitions. [2021-10-06 21:05:31,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:05:31,074 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:05:31,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:31,077 INFO L225 Difference]: With dead ends: 1222 [2021-10-06 21:05:31,077 INFO L226 Difference]: Without dead ends: 1222 [2021-10-06 21:05:31,077 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 834.4ms TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:05:31,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2021-10-06 21:05:31,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 892. [2021-10-06 21:05:31,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 891 states have (on average 3.984287317620651) internal successors, (3550), 891 states have internal predecessors, (3550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:31,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 3550 transitions. [2021-10-06 21:05:31,097 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 3550 transitions. Word has length 24 [2021-10-06 21:05:31,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:31,097 INFO L470 AbstractCegarLoop]: Abstraction has 892 states and 3550 transitions. [2021-10-06 21:05:31,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:31,097 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 3550 transitions. [2021-10-06 21:05:31,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:05:31,100 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:31,100 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:31,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:31,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:31,301 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:05:31,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:31,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1982608344, now seen corresponding path program 29 times [2021-10-06 21:05:31,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:31,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796315858] [2021-10-06 21:05:31,303 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:05:31,304 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:31,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:31,305 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:31,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2021-10-06 21:05:32,846 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:05:32,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:32,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:05:32,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:33,324 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:33,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:33,560 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:33,561 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:33,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [796315858] [2021-10-06 21:05:33,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [796315858] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:05:33,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:05:33,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:05:33,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127878820] [2021-10-06 21:05:33,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:05:33,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:33,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:05:33,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:05:33,563 INFO L87 Difference]: Start difference. First operand 892 states and 3550 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:34,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:34,025 INFO L93 Difference]: Finished difference Result 1146 states and 4422 transitions. [2021-10-06 21:05:34,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:05:34,026 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:05:34,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:34,030 INFO L225 Difference]: With dead ends: 1146 [2021-10-06 21:05:34,030 INFO L226 Difference]: Without dead ends: 1146 [2021-10-06 21:05:34,030 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 399.8ms TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:05:34,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2021-10-06 21:05:34,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 892. [2021-10-06 21:05:34,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 891 states have (on average 3.9865319865319866) internal successors, (3552), 891 states have internal predecessors, (3552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:34,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 3552 transitions. [2021-10-06 21:05:34,056 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 3552 transitions. Word has length 24 [2021-10-06 21:05:34,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:34,056 INFO L470 AbstractCegarLoop]: Abstraction has 892 states and 3552 transitions. [2021-10-06 21:05:34,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:34,057 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 3552 transitions. [2021-10-06 21:05:34,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:05:34,060 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:34,060 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:34,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Ended with exit code 0 [2021-10-06 21:05:34,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:34,273 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:05:34,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:34,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1567656454, now seen corresponding path program 30 times [2021-10-06 21:05:34,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:34,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488417023] [2021-10-06 21:05:34,275 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:05:34,275 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:34,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:34,276 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:34,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2021-10-06 21:05:35,952 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:05:35,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:35,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:05:35,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:36,430 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:36,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:36,658 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:36,658 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:36,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488417023] [2021-10-06 21:05:36,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [488417023] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:05:36,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:05:36,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:05:36,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135544347] [2021-10-06 21:05:36,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:05:36,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:36,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:05:36,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:05:36,660 INFO L87 Difference]: Start difference. First operand 892 states and 3552 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:37,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:37,077 INFO L93 Difference]: Finished difference Result 1134 states and 4390 transitions. [2021-10-06 21:05:37,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:05:37,079 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:05:37,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:37,081 INFO L225 Difference]: With dead ends: 1134 [2021-10-06 21:05:37,081 INFO L226 Difference]: Without dead ends: 1134 [2021-10-06 21:05:37,082 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 377.8ms TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:05:37,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2021-10-06 21:05:37,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 876. [2021-10-06 21:05:37,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 875 states have (on average 3.9634285714285715) internal successors, (3468), 875 states have internal predecessors, (3468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:37,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 3468 transitions. [2021-10-06 21:05:37,097 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 3468 transitions. Word has length 24 [2021-10-06 21:05:37,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:37,098 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 3468 transitions. [2021-10-06 21:05:37,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:37,098 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 3468 transitions. [2021-10-06 21:05:37,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:05:37,100 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:37,100 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:37,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:37,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:37,301 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:05:37,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:37,302 INFO L82 PathProgramCache]: Analyzing trace with hash -297745046, now seen corresponding path program 27 times [2021-10-06 21:05:37,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:37,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840273467] [2021-10-06 21:05:37,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:05:37,303 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:37,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:37,304 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:37,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2021-10-06 21:05:38,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:05:38,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:38,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:05:38,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:39,410 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:39,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:39,656 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:39,656 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:39,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840273467] [2021-10-06 21:05:39,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840273467] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:05:39,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:05:39,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:05:39,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448175882] [2021-10-06 21:05:39,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:05:39,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:39,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:05:39,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:05:39,658 INFO L87 Difference]: Start difference. First operand 876 states and 3468 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:40,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:40,105 INFO L93 Difference]: Finished difference Result 1210 states and 4550 transitions. [2021-10-06 21:05:40,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:05:40,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:05:40,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:40,109 INFO L225 Difference]: With dead ends: 1210 [2021-10-06 21:05:40,109 INFO L226 Difference]: Without dead ends: 1210 [2021-10-06 21:05:40,110 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 395.2ms TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:05:40,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-10-06 21:05:40,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 876. [2021-10-06 21:05:40,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 875 states have (on average 3.9657142857142857) internal successors, (3470), 875 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:40,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 3470 transitions. [2021-10-06 21:05:40,137 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 3470 transitions. Word has length 24 [2021-10-06 21:05:40,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:40,138 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 3470 transitions. [2021-10-06 21:05:40,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:40,138 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 3470 transitions. [2021-10-06 21:05:40,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:05:40,140 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:40,140 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:40,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:40,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:40,341 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:05:40,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:40,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1492366388, now seen corresponding path program 28 times [2021-10-06 21:05:40,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:40,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446500113] [2021-10-06 21:05:40,344 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:05:40,344 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:40,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:40,345 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:40,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2021-10-06 21:05:41,840 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:05:41,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:41,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:05:41,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:42,342 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:42,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:42,583 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:42,584 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:42,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446500113] [2021-10-06 21:05:42,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1446500113] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:05:42,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:05:42,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:05:42,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443555272] [2021-10-06 21:05:42,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:05:42,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:42,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:05:42,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:05:42,586 INFO L87 Difference]: Start difference. First operand 876 states and 3470 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:42,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:42,979 INFO L93 Difference]: Finished difference Result 1194 states and 4512 transitions. [2021-10-06 21:05:42,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:05:42,980 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:05:42,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:42,984 INFO L225 Difference]: With dead ends: 1194 [2021-10-06 21:05:42,984 INFO L226 Difference]: Without dead ends: 1194 [2021-10-06 21:05:42,984 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 383.2ms TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:05:42,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2021-10-06 21:05:42,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 858. [2021-10-06 21:05:42,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 857 states have (on average 3.935822637106184) internal successors, (3373), 857 states have internal predecessors, (3373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:43,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 3373 transitions. [2021-10-06 21:05:43,001 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 3373 transitions. Word has length 24 [2021-10-06 21:05:43,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:43,002 INFO L470 AbstractCegarLoop]: Abstraction has 858 states and 3373 transitions. [2021-10-06 21:05:43,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:43,002 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 3373 transitions. [2021-10-06 21:05:43,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:05:43,004 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:43,004 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:43,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:43,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:43,205 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:05:43,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:43,206 INFO L82 PathProgramCache]: Analyzing trace with hash 7640790, now seen corresponding path program 29 times [2021-10-06 21:05:43,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:43,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816649432] [2021-10-06 21:05:43,207 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:05:43,207 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:43,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:43,208 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:43,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Waiting until timeout for monitored process [2021-10-06 21:05:44,797 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:05:44,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:44,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:05:44,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:45,087 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:45,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:45,260 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:45,260 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:45,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816649432] [2021-10-06 21:05:45,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816649432] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:05:45,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:05:45,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-10-06 21:05:45,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298356207] [2021-10-06 21:05:45,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:05:45,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:45,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:05:45,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:05:45,263 INFO L87 Difference]: Start difference. First operand 858 states and 3373 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:45,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:45,855 INFO L93 Difference]: Finished difference Result 1176 states and 4296 transitions. [2021-10-06 21:05:45,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:05:45,855 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:05:45,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:45,859 INFO L225 Difference]: With dead ends: 1176 [2021-10-06 21:05:45,859 INFO L226 Difference]: Without dead ends: 1162 [2021-10-06 21:05:45,859 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 494.8ms TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:05:45,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2021-10-06 21:05:45,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 858. [2021-10-06 21:05:45,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 857 states have (on average 3.931155192532089) internal successors, (3369), 857 states have internal predecessors, (3369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:45,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 3369 transitions. [2021-10-06 21:05:45,876 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 3369 transitions. Word has length 24 [2021-10-06 21:05:45,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:45,876 INFO L470 AbstractCegarLoop]: Abstraction has 858 states and 3369 transitions. [2021-10-06 21:05:45,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:45,876 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 3369 transitions. [2021-10-06 21:05:45,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:05:45,878 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:45,878 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:45,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:46,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:46,079 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:05:46,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:46,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1404450228, now seen corresponding path program 30 times [2021-10-06 21:05:46,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:46,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717516931] [2021-10-06 21:05:46,081 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:05:46,081 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:46,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:46,083 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:46,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2021-10-06 21:05:47,852 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:05:47,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:47,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:05:47,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:48,199 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:48,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:48,414 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:48,414 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:48,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717516931] [2021-10-06 21:05:48,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [717516931] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:05:48,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:05:48,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:05:48,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954383882] [2021-10-06 21:05:48,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:05:48,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:48,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:05:48,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:05:48,416 INFO L87 Difference]: Start difference. First operand 858 states and 3369 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:49,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:49,552 INFO L93 Difference]: Finished difference Result 1204 states and 4356 transitions. [2021-10-06 21:05:49,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 21:05:49,553 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:05:49,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:49,555 INFO L225 Difference]: With dead ends: 1204 [2021-10-06 21:05:49,555 INFO L226 Difference]: Without dead ends: 1198 [2021-10-06 21:05:49,556 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 997.7ms TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:05:49,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2021-10-06 21:05:49,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 864. [2021-10-06 21:05:49,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 863 states have (on average 3.9304750869061413) internal successors, (3392), 863 states have internal predecessors, (3392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:49,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 3392 transitions. [2021-10-06 21:05:49,572 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 3392 transitions. Word has length 24 [2021-10-06 21:05:49,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:49,573 INFO L470 AbstractCegarLoop]: Abstraction has 864 states and 3392 transitions. [2021-10-06 21:05:49,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:49,573 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 3392 transitions. [2021-10-06 21:05:49,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:05:49,575 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:49,575 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:49,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Ended with exit code 0 [2021-10-06 21:05:49,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:49,776 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:05:49,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:49,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1056974534, now seen corresponding path program 31 times [2021-10-06 21:05:49,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:49,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503892818] [2021-10-06 21:05:49,778 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:05:49,778 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:49,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:49,779 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:49,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Waiting until timeout for monitored process [2021-10-06 21:05:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:05:51,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:05:51,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:51,705 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:51,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:51,942 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:51,943 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:51,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503892818] [2021-10-06 21:05:51,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503892818] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:05:51,943 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:05:51,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:05:51,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418381351] [2021-10-06 21:05:51,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:05:51,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:51,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:05:51,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:05:51,945 INFO L87 Difference]: Start difference. First operand 864 states and 3392 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:52,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:52,360 INFO L93 Difference]: Finished difference Result 1172 states and 4301 transitions. [2021-10-06 21:05:52,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:05:52,361 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:05:52,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:52,364 INFO L225 Difference]: With dead ends: 1172 [2021-10-06 21:05:52,364 INFO L226 Difference]: Without dead ends: 1172 [2021-10-06 21:05:52,364 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 304.3ms TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:05:52,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2021-10-06 21:05:52,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 854. [2021-10-06 21:05:52,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 3.939038686987104) internal successors, (3360), 853 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:52,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 3360 transitions. [2021-10-06 21:05:52,381 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 3360 transitions. Word has length 24 [2021-10-06 21:05:52,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:52,381 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 3360 transitions. [2021-10-06 21:05:52,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:52,381 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 3360 transitions. [2021-10-06 21:05:52,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:05:52,383 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:52,383 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:52,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:52,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:52,584 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:05:52,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:52,585 INFO L82 PathProgramCache]: Analyzing trace with hash -416670446, now seen corresponding path program 32 times [2021-10-06 21:05:52,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:52,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878454665] [2021-10-06 21:05:52,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:05:52,587 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:52,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:52,588 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:52,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Waiting until timeout for monitored process [2021-10-06 21:05:54,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:05:54,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:54,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:05:54,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:54,570 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:54,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:54,745 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:54,746 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:54,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878454665] [2021-10-06 21:05:54,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878454665] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:05:54,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:05:54,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-10-06 21:05:54,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989156225] [2021-10-06 21:05:54,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:05:54,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:54,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:05:54,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:05:54,748 INFO L87 Difference]: Start difference. First operand 854 states and 3360 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:55,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:55,288 INFO L93 Difference]: Finished difference Result 1248 states and 4493 transitions. [2021-10-06 21:05:55,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:05:55,288 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:05:55,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:55,291 INFO L225 Difference]: With dead ends: 1248 [2021-10-06 21:05:55,291 INFO L226 Difference]: Without dead ends: 1234 [2021-10-06 21:05:55,291 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 461.2ms TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:05:55,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2021-10-06 21:05:55,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 860. [2021-10-06 21:05:55,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 859 states have (on average 3.928987194412107) internal successors, (3375), 859 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:55,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 3375 transitions. [2021-10-06 21:05:55,318 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 3375 transitions. Word has length 24 [2021-10-06 21:05:55,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:55,318 INFO L470 AbstractCegarLoop]: Abstraction has 860 states and 3375 transitions. [2021-10-06 21:05:55,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:55,319 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 3375 transitions. [2021-10-06 21:05:55,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:05:55,322 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:55,322 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:55,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Ended with exit code 0 [2021-10-06 21:05:55,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:55,536 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:05:55,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:55,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1891347322, now seen corresponding path program 31 times [2021-10-06 21:05:55,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:55,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284215153] [2021-10-06 21:05:55,538 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:05:55,538 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:55,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:55,539 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:55,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2021-10-06 21:05:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:05:57,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:05:57,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:57,358 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:57,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:57,543 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:05:57,543 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:57,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284215153] [2021-10-06 21:05:57,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1284215153] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:05:57,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:05:57,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-10-06 21:05:57,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520150381] [2021-10-06 21:05:57,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:05:57,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:57,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:05:57,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:05:57,546 INFO L87 Difference]: Start difference. First operand 860 states and 3375 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:57,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:57,906 INFO L93 Difference]: Finished difference Result 1528 states and 5564 transitions. [2021-10-06 21:05:57,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:05:57,907 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:05:57,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:57,910 INFO L225 Difference]: With dead ends: 1528 [2021-10-06 21:05:57,910 INFO L226 Difference]: Without dead ends: 1528 [2021-10-06 21:05:57,911 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 255.6ms TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:05:57,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2021-10-06 21:05:57,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 872. [2021-10-06 21:05:57,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 871 states have (on average 3.923076923076923) internal successors, (3417), 871 states have internal predecessors, (3417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:57,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 3417 transitions. [2021-10-06 21:05:57,932 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 3417 transitions. Word has length 24 [2021-10-06 21:05:57,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:57,932 INFO L470 AbstractCegarLoop]: Abstraction has 872 states and 3417 transitions. [2021-10-06 21:05:57,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:57,933 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 3417 transitions. [2021-10-06 21:05:57,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:05:57,935 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:57,935 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:57,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (96)] Ended with exit code 0 [2021-10-06 21:05:58,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:58,137 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:05:58,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:58,138 INFO L82 PathProgramCache]: Analyzing trace with hash -2022540468, now seen corresponding path program 33 times [2021-10-06 21:05:58,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:58,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240650554] [2021-10-06 21:05:58,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:05:58,139 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:58,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:58,142 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:58,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (97)] Waiting until timeout for monitored process [2021-10-06 21:05:59,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:05:59,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:59,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:05:59,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:00,270 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:00,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:00,495 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:00,495 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:00,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [240650554] [2021-10-06 21:06:00,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [240650554] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:06:00,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:06:00,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:06:00,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801681565] [2021-10-06 21:06:00,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:06:00,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:00,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:06:00,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:06:00,498 INFO L87 Difference]: Start difference. First operand 872 states and 3417 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:01,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:01,306 INFO L93 Difference]: Finished difference Result 1270 states and 4583 transitions. [2021-10-06 21:06:01,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 21:06:01,307 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:06:01,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:01,309 INFO L225 Difference]: With dead ends: 1270 [2021-10-06 21:06:01,309 INFO L226 Difference]: Without dead ends: 1264 [2021-10-06 21:06:01,309 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 755.2ms TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:06:01,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2021-10-06 21:06:01,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 884. [2021-10-06 21:06:01,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 883 states have (on average 3.929784824462061) internal successors, (3470), 883 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:01,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 3470 transitions. [2021-10-06 21:06:01,326 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 3470 transitions. Word has length 24 [2021-10-06 21:06:01,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:01,327 INFO L470 AbstractCegarLoop]: Abstraction has 884 states and 3470 transitions. [2021-10-06 21:06:01,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:01,327 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 3470 transitions. [2021-10-06 21:06:01,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:06:01,328 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:01,328 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:01,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (97)] Ended with exit code 0 [2021-10-06 21:06:01,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:06:01,529 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:06:01,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:01,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1492455046, now seen corresponding path program 32 times [2021-10-06 21:06:01,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:01,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [686223921] [2021-10-06 21:06:01,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:06:01,532 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:01,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:01,533 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:06:01,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (98)] Waiting until timeout for monitored process [2021-10-06 21:06:03,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:06:03,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:03,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:06:03,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:03,701 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:03,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:03,886 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:03,887 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:03,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [686223921] [2021-10-06 21:06:03,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [686223921] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:06:03,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:06:03,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:06:03,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751505222] [2021-10-06 21:06:03,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:06:03,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:03,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:06:03,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:06:03,889 INFO L87 Difference]: Start difference. First operand 884 states and 3470 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:04,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:04,796 INFO L93 Difference]: Finished difference Result 1550 states and 5554 transitions. [2021-10-06 21:06:04,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:06:04,797 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:06:04,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:04,801 INFO L225 Difference]: With dead ends: 1550 [2021-10-06 21:06:04,801 INFO L226 Difference]: Without dead ends: 1546 [2021-10-06 21:06:04,802 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 692.1ms TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:06:04,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2021-10-06 21:06:04,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 892. [2021-10-06 21:06:04,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 891 states have (on average 3.9326599326599325) internal successors, (3504), 891 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:04,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 3504 transitions. [2021-10-06 21:06:04,823 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 3504 transitions. Word has length 24 [2021-10-06 21:06:04,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:04,823 INFO L470 AbstractCegarLoop]: Abstraction has 892 states and 3504 transitions. [2021-10-06 21:06:04,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:04,823 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 3504 transitions. [2021-10-06 21:06:04,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:06:04,825 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:04,825 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:04,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (98)] Forceful destruction successful, exit code 0 [2021-10-06 21:06:05,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:06:05,026 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:06:05,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:05,027 INFO L82 PathProgramCache]: Analyzing trace with hash -647222794, now seen corresponding path program 33 times [2021-10-06 21:06:05,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:05,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980973351] [2021-10-06 21:06:05,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:06:05,028 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:05,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:05,030 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:06:05,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (99)] Waiting until timeout for monitored process [2021-10-06 21:06:06,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:06:06,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:06,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:06:06,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:07,149 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:07,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:07,352 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:07,353 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:07,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [980973351] [2021-10-06 21:06:07,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [980973351] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:06:07,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:06:07,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:06:07,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848141241] [2021-10-06 21:06:07,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:06:07,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:07,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:06:07,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:06:07,356 INFO L87 Difference]: Start difference. First operand 892 states and 3504 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:07,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:07,751 INFO L93 Difference]: Finished difference Result 1510 states and 5488 transitions. [2021-10-06 21:06:07,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:06:07,751 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:06:07,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:07,755 INFO L225 Difference]: With dead ends: 1510 [2021-10-06 21:06:07,755 INFO L226 Difference]: Without dead ends: 1510 [2021-10-06 21:06:07,755 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 335.9ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:06:07,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1510 states. [2021-10-06 21:06:07,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1510 to 892. [2021-10-06 21:06:07,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 891 states have (on average 3.9326599326599325) internal successors, (3504), 891 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:07,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 3504 transitions. [2021-10-06 21:06:07,774 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 3504 transitions. Word has length 24 [2021-10-06 21:06:07,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:07,774 INFO L470 AbstractCegarLoop]: Abstraction has 892 states and 3504 transitions. [2021-10-06 21:06:07,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:07,774 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 3504 transitions. [2021-10-06 21:06:07,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:06:07,776 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:07,776 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:07,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (99)] Forceful destruction successful, exit code 0 [2021-10-06 21:06:07,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:06:07,978 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:06:07,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:07,979 INFO L82 PathProgramCache]: Analyzing trace with hash 110501412, now seen corresponding path program 34 times [2021-10-06 21:06:07,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:07,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029669576] [2021-10-06 21:06:07,980 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:06:07,980 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:07,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:07,981 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:06:07,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (100)] Waiting until timeout for monitored process [2021-10-06 21:06:09,631 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:06:09,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:09,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:06:09,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:10,004 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:10,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:10,231 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:10,231 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:10,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029669576] [2021-10-06 21:06:10,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029669576] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:06:10,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:06:10,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:06:10,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507174719] [2021-10-06 21:06:10,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:06:10,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:10,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:06:10,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:06:10,233 INFO L87 Difference]: Start difference. First operand 892 states and 3504 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:10,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:10,886 INFO L93 Difference]: Finished difference Result 1242 states and 4545 transitions. [2021-10-06 21:06:10,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:06:10,887 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:06:10,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:10,890 INFO L225 Difference]: With dead ends: 1242 [2021-10-06 21:06:10,890 INFO L226 Difference]: Without dead ends: 1242 [2021-10-06 21:06:10,890 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 561.9ms TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:06:10,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2021-10-06 21:06:10,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 874. [2021-10-06 21:06:10,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 873 states have (on average 3.9404352806414664) internal successors, (3440), 873 states have internal predecessors, (3440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:10,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 3440 transitions. [2021-10-06 21:06:10,907 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 3440 transitions. Word has length 24 [2021-10-06 21:06:10,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:10,907 INFO L470 AbstractCegarLoop]: Abstraction has 874 states and 3440 transitions. [2021-10-06 21:06:10,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:10,907 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 3440 transitions. [2021-10-06 21:06:10,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:06:10,909 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:10,909 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:10,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (100)] Forceful destruction successful, exit code 0 [2021-10-06 21:06:11,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:06:11,110 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:06:11,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:11,111 INFO L82 PathProgramCache]: Analyzing trace with hash -865590858, now seen corresponding path program 34 times [2021-10-06 21:06:11,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:11,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707772039] [2021-10-06 21:06:11,112 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:06:11,112 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:11,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:11,114 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:06:11,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (101)] Waiting until timeout for monitored process [2021-10-06 21:06:12,795 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:06:12,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:12,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:06:12,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:13,069 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:13,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:13,246 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:13,246 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:13,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [707772039] [2021-10-06 21:06:13,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [707772039] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:06:13,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:06:13,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-10-06 21:06:13,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81106582] [2021-10-06 21:06:13,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:06:13,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:13,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:06:13,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:06:13,248 INFO L87 Difference]: Start difference. First operand 874 states and 3440 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:13,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:13,645 INFO L93 Difference]: Finished difference Result 1508 states and 5437 transitions. [2021-10-06 21:06:13,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:06:13,645 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:06:13,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:13,649 INFO L225 Difference]: With dead ends: 1508 [2021-10-06 21:06:13,649 INFO L226 Difference]: Without dead ends: 1508 [2021-10-06 21:06:13,649 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 269.8ms TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:06:13,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2021-10-06 21:06:13,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 854. [2021-10-06 21:06:13,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 3.939038686987104) internal successors, (3360), 853 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:13,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 3360 transitions. [2021-10-06 21:06:13,668 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 3360 transitions. Word has length 24 [2021-10-06 21:06:13,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:13,669 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 3360 transitions. [2021-10-06 21:06:13,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:13,669 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 3360 transitions. [2021-10-06 21:06:13,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:06:13,670 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:13,670 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:13,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (101)] Ended with exit code 0 [2021-10-06 21:06:13,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:06:13,879 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:06:13,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:13,879 INFO L82 PathProgramCache]: Analyzing trace with hash -408918690, now seen corresponding path program 35 times [2021-10-06 21:06:13,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:13,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152098259] [2021-10-06 21:06:13,881 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:06:13,881 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:13,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:13,883 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:06:13,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (102)] Waiting until timeout for monitored process [2021-10-06 21:06:15,653 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:06:15,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:15,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:06:15,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:16,015 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:16,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:16,242 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:16,242 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:16,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1152098259] [2021-10-06 21:06:16,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1152098259] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:06:16,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:06:16,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:06:16,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058423686] [2021-10-06 21:06:16,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:06:16,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:16,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:06:16,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:06:16,244 INFO L87 Difference]: Start difference. First operand 854 states and 3360 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:16,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:16,649 INFO L93 Difference]: Finished difference Result 1410 states and 5157 transitions. [2021-10-06 21:06:16,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:06:16,650 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:06:16,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:16,653 INFO L225 Difference]: With dead ends: 1410 [2021-10-06 21:06:16,654 INFO L226 Difference]: Without dead ends: 1410 [2021-10-06 21:06:16,654 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 299.6ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:06:16,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2021-10-06 21:06:16,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 862. [2021-10-06 21:06:16,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 861 states have (on average 3.9558652729384436) internal successors, (3406), 861 states have internal predecessors, (3406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:16,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 3406 transitions. [2021-10-06 21:06:16,672 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 3406 transitions. Word has length 24 [2021-10-06 21:06:16,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:16,673 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 3406 transitions. [2021-10-06 21:06:16,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:16,673 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 3406 transitions. [2021-10-06 21:06:16,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:06:16,674 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:16,674 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:16,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (102)] Forceful destruction successful, exit code 0 [2021-10-06 21:06:16,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:06:16,875 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:06:16,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:16,877 INFO L82 PathProgramCache]: Analyzing trace with hash 335783808, now seen corresponding path program 36 times [2021-10-06 21:06:16,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:16,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [443089456] [2021-10-06 21:06:16,878 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:06:16,878 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:16,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:16,880 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:06:16,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (103)] Waiting until timeout for monitored process [2021-10-06 21:06:18,801 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:06:18,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:18,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:06:18,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:19,168 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:19,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:19,425 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:19,425 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:19,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [443089456] [2021-10-06 21:06:19,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [443089456] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:06:19,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:06:19,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:06:19,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028695408] [2021-10-06 21:06:19,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:06:19,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:19,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:06:19,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:06:19,427 INFO L87 Difference]: Start difference. First operand 862 states and 3406 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:19,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:19,846 INFO L93 Difference]: Finished difference Result 1428 states and 5209 transitions. [2021-10-06 21:06:19,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:06:19,848 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:06:19,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:19,851 INFO L225 Difference]: With dead ends: 1428 [2021-10-06 21:06:19,851 INFO L226 Difference]: Without dead ends: 1428 [2021-10-06 21:06:19,851 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 337.1ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:06:19,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2021-10-06 21:06:19,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 838. [2021-10-06 21:06:19,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 3.92831541218638) internal successors, (3288), 837 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:19,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 3288 transitions. [2021-10-06 21:06:19,870 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 3288 transitions. Word has length 24 [2021-10-06 21:06:19,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:19,870 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 3288 transitions. [2021-10-06 21:06:19,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:19,870 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 3288 transitions. [2021-10-06 21:06:19,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:06:19,872 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:19,872 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:19,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (103)] Forceful destruction successful, exit code 0 [2021-10-06 21:06:20,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:06:20,073 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:06:20,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:20,073 INFO L82 PathProgramCache]: Analyzing trace with hash 353186642, now seen corresponding path program 35 times [2021-10-06 21:06:20,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:20,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1642991944] [2021-10-06 21:06:20,075 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:06:20,075 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:20,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:20,076 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:06:20,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (104)] Waiting until timeout for monitored process [2021-10-06 21:06:21,867 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:06:21,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:21,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:06:21,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:22,382 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:22,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:22,635 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:22,635 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:22,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1642991944] [2021-10-06 21:06:22,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1642991944] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:06:22,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:06:22,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:06:22,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666924057] [2021-10-06 21:06:22,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:06:22,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:22,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:06:22,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:06:22,637 INFO L87 Difference]: Start difference. First operand 838 states and 3288 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:23,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:23,774 INFO L93 Difference]: Finished difference Result 1292 states and 4604 transitions. [2021-10-06 21:06:23,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:06:23,775 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:06:23,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:23,777 INFO L225 Difference]: With dead ends: 1292 [2021-10-06 21:06:23,777 INFO L226 Difference]: Without dead ends: 1286 [2021-10-06 21:06:23,778 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 982.4ms TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:06:23,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2021-10-06 21:06:23,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 850. [2021-10-06 21:06:23,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 849 states have (on average 3.9458186101295643) internal successors, (3350), 849 states have internal predecessors, (3350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:23,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 3350 transitions. [2021-10-06 21:06:23,805 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 3350 transitions. Word has length 24 [2021-10-06 21:06:23,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:23,805 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 3350 transitions. [2021-10-06 21:06:23,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:23,805 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 3350 transitions. [2021-10-06 21:06:23,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:06:23,807 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:23,807 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:23,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (104)] Ended with exit code 0 [2021-10-06 21:06:24,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:06:24,008 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:06:24,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:24,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1480355892, now seen corresponding path program 36 times [2021-10-06 21:06:24,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:24,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458287588] [2021-10-06 21:06:24,010 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:06:24,011 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:24,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:24,012 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:06:24,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (105)] Waiting until timeout for monitored process [2021-10-06 21:06:25,972 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:06:25,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:25,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:06:25,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:26,512 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:26,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:26,766 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:26,767 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:26,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1458287588] [2021-10-06 21:06:26,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1458287588] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:06:26,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:06:26,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:06:26,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197666447] [2021-10-06 21:06:26,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:06:26,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:26,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:06:26,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:06:26,769 INFO L87 Difference]: Start difference. First operand 850 states and 3350 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:27,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:27,158 INFO L93 Difference]: Finished difference Result 1290 states and 4624 transitions. [2021-10-06 21:06:27,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:06:27,158 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:06:27,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:27,161 INFO L225 Difference]: With dead ends: 1290 [2021-10-06 21:06:27,161 INFO L226 Difference]: Without dead ends: 1290 [2021-10-06 21:06:27,161 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 357.9ms TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:06:27,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2021-10-06 21:06:27,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 848. [2021-10-06 21:06:27,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 847 states have (on average 3.949232585596222) internal successors, (3345), 847 states have internal predecessors, (3345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:27,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 3345 transitions. [2021-10-06 21:06:27,180 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 3345 transitions. Word has length 24 [2021-10-06 21:06:27,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:27,180 INFO L470 AbstractCegarLoop]: Abstraction has 848 states and 3345 transitions. [2021-10-06 21:06:27,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:27,181 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 3345 transitions. [2021-10-06 21:06:27,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:06:27,182 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:27,182 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:27,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (105)] Forceful destruction successful, exit code 0 [2021-10-06 21:06:27,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:06:27,383 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:06:27,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:27,384 INFO L82 PathProgramCache]: Analyzing trace with hash -717165790, now seen corresponding path program 37 times [2021-10-06 21:06:27,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:27,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1882198116] [2021-10-06 21:06:27,386 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:06:27,386 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:27,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:27,387 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:06:27,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (106)] Waiting until timeout for monitored process [2021-10-06 21:06:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:06:29,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:06:29,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:29,669 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:29,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:29,898 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:29,898 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:29,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1882198116] [2021-10-06 21:06:29,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1882198116] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:06:29,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:06:29,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:06:29,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504275427] [2021-10-06 21:06:29,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:06:29,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:29,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:06:29,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:06:29,900 INFO L87 Difference]: Start difference. First operand 848 states and 3345 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:30,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:30,913 INFO L93 Difference]: Finished difference Result 1458 states and 5313 transitions. [2021-10-06 21:06:30,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:06:30,914 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:06:30,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:30,917 INFO L225 Difference]: With dead ends: 1458 [2021-10-06 21:06:30,917 INFO L226 Difference]: Without dead ends: 1454 [2021-10-06 21:06:30,917 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 826.8ms TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:06:30,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2021-10-06 21:06:30,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 858. [2021-10-06 21:06:30,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 857 states have (on average 3.960326721120187) internal successors, (3394), 857 states have internal predecessors, (3394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:30,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 3394 transitions. [2021-10-06 21:06:30,936 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 3394 transitions. Word has length 24 [2021-10-06 21:06:30,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:30,936 INFO L470 AbstractCegarLoop]: Abstraction has 858 states and 3394 transitions. [2021-10-06 21:06:30,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:30,936 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 3394 transitions. [2021-10-06 21:06:30,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:06:30,938 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:30,938 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:30,954 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (106)] Ended with exit code 0 [2021-10-06 21:06:31,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:06:31,139 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:06:31,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:31,140 INFO L82 PathProgramCache]: Analyzing trace with hash 2067390302, now seen corresponding path program 38 times [2021-10-06 21:06:31,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:31,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [328221302] [2021-10-06 21:06:31,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:06:31,142 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:31,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:31,143 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:06:31,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (107)] Waiting until timeout for monitored process [2021-10-06 21:06:33,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:06:33,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:33,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:06:33,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:33,574 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:33,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:33,809 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:33,810 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:33,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [328221302] [2021-10-06 21:06:33,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [328221302] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:06:33,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:06:33,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:06:33,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366652795] [2021-10-06 21:06:33,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:06:33,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:33,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:06:33,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:06:33,812 INFO L87 Difference]: Start difference. First operand 858 states and 3394 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:34,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:34,210 INFO L93 Difference]: Finished difference Result 1420 states and 5247 transitions. [2021-10-06 21:06:34,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:06:34,211 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:06:34,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:34,214 INFO L225 Difference]: With dead ends: 1420 [2021-10-06 21:06:34,214 INFO L226 Difference]: Without dead ends: 1420 [2021-10-06 21:06:34,214 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 336.8ms TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:06:34,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2021-10-06 21:06:34,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 856. [2021-10-06 21:06:34,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 855 states have (on average 3.9637426900584796) internal successors, (3389), 855 states have internal predecessors, (3389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:34,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 3389 transitions. [2021-10-06 21:06:34,232 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 3389 transitions. Word has length 24 [2021-10-06 21:06:34,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:34,232 INFO L470 AbstractCegarLoop]: Abstraction has 856 states and 3389 transitions. [2021-10-06 21:06:34,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:34,233 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 3389 transitions. [2021-10-06 21:06:34,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:06:34,234 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:34,234 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:34,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (107)] Forceful destruction successful, exit code 0 [2021-10-06 21:06:34,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:06:34,435 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:06:34,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:34,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1447278230, now seen corresponding path program 37 times [2021-10-06 21:06:34,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:34,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [491396984] [2021-10-06 21:06:34,437 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:06:34,438 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:34,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:34,439 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:06:34,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (108)] Waiting until timeout for monitored process [2021-10-06 21:06:36,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:06:36,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:06:36,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:36,862 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:36,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:37,126 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:37,127 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:37,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [491396984] [2021-10-06 21:06:37,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [491396984] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:06:37,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:06:37,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:06:37,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43252344] [2021-10-06 21:06:37,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:06:37,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:37,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:06:37,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:06:37,129 INFO L87 Difference]: Start difference. First operand 856 states and 3389 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:38,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:38,291 INFO L93 Difference]: Finished difference Result 1304 states and 4684 transitions. [2021-10-06 21:06:38,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:06:38,291 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:06:38,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:38,294 INFO L225 Difference]: With dead ends: 1304 [2021-10-06 21:06:38,294 INFO L226 Difference]: Without dead ends: 1298 [2021-10-06 21:06:38,294 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 965.3ms TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:06:38,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2021-10-06 21:06:38,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 868. [2021-10-06 21:06:38,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 867 states have (on average 3.970011534025375) internal successors, (3442), 867 states have internal predecessors, (3442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:38,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 3442 transitions. [2021-10-06 21:06:38,311 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 3442 transitions. Word has length 24 [2021-10-06 21:06:38,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:38,312 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 3442 transitions. [2021-10-06 21:06:38,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:38,312 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 3442 transitions. [2021-10-06 21:06:38,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:06:38,313 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:38,314 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:38,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (108)] Forceful destruction successful, exit code 0 [2021-10-06 21:06:38,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:06:38,515 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:06:38,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:38,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1977363652, now seen corresponding path program 39 times [2021-10-06 21:06:38,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:38,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1381671170] [2021-10-06 21:06:38,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:06:38,517 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:38,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:38,518 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:06:38,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (109)] Waiting until timeout for monitored process [2021-10-06 21:06:40,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:06:40,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:40,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:06:40,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:41,032 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:41,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:41,278 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:41,279 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:41,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1381671170] [2021-10-06 21:06:41,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1381671170] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:06:41,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:06:41,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:06:41,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780021307] [2021-10-06 21:06:41,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:06:41,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:41,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:06:41,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:06:41,281 INFO L87 Difference]: Start difference. First operand 868 states and 3442 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:42,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:42,319 INFO L93 Difference]: Finished difference Result 1518 states and 5500 transitions. [2021-10-06 21:06:42,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:06:42,319 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:06:42,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:42,323 INFO L225 Difference]: With dead ends: 1518 [2021-10-06 21:06:42,323 INFO L226 Difference]: Without dead ends: 1514 [2021-10-06 21:06:42,323 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 887.1ms TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:06:42,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2021-10-06 21:06:42,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 876. [2021-10-06 21:06:42,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 875 states have (on average 3.9725714285714284) internal successors, (3476), 875 states have internal predecessors, (3476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:42,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 3476 transitions. [2021-10-06 21:06:42,342 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 3476 transitions. Word has length 24 [2021-10-06 21:06:42,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:42,342 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 3476 transitions. [2021-10-06 21:06:42,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:42,343 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 3476 transitions. [2021-10-06 21:06:42,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:06:42,344 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:42,344 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:42,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (109)] Ended with exit code 0 [2021-10-06 21:06:42,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:06:42,545 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:06:42,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:42,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1472371392, now seen corresponding path program 40 times [2021-10-06 21:06:42,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:42,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [992194340] [2021-10-06 21:06:42,547 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:06:42,547 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:42,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:42,549 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:06:42,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (110)] Waiting until timeout for monitored process [2021-10-06 21:06:44,427 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:06:44,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:44,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:06:44,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:44,924 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:44,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:45,179 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:45,179 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:45,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [992194340] [2021-10-06 21:06:45,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [992194340] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:06:45,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:06:45,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:06:45,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931516876] [2021-10-06 21:06:45,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:06:45,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:45,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:06:45,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:06:45,181 INFO L87 Difference]: Start difference. First operand 876 states and 3476 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:45,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:45,586 INFO L93 Difference]: Finished difference Result 1478 states and 5448 transitions. [2021-10-06 21:06:45,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:06:45,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:06:45,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:45,589 INFO L225 Difference]: With dead ends: 1478 [2021-10-06 21:06:45,590 INFO L226 Difference]: Without dead ends: 1478 [2021-10-06 21:06:45,590 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 386.9ms TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:06:45,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2021-10-06 21:06:45,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 876. [2021-10-06 21:06:45,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 875 states have (on average 3.9725714285714284) internal successors, (3476), 875 states have internal predecessors, (3476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:45,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 3476 transitions. [2021-10-06 21:06:45,608 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 3476 transitions. Word has length 24 [2021-10-06 21:06:45,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:45,608 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 3476 transitions. [2021-10-06 21:06:45,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:45,609 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 3476 transitions. [2021-10-06 21:06:45,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:06:45,610 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:45,610 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:45,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (110)] Ended with exit code 0 [2021-10-06 21:06:45,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:06:45,811 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:06:45,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:45,812 INFO L82 PathProgramCache]: Analyzing trace with hash -714647186, now seen corresponding path program 38 times [2021-10-06 21:06:45,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:45,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1958994503] [2021-10-06 21:06:45,813 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:06:45,813 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:45,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:45,815 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:06:45,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (111)] Waiting until timeout for monitored process [2021-10-06 21:06:47,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:06:47,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:47,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:06:47,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:48,352 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:48,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:48,629 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:48,629 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:48,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1958994503] [2021-10-06 21:06:48,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1958994503] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:06:48,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:06:48,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:06:48,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757774183] [2021-10-06 21:06:48,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:06:48,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:48,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:06:48,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:06:48,631 INFO L87 Difference]: Start difference. First operand 876 states and 3476 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:49,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:49,709 INFO L93 Difference]: Finished difference Result 1292 states and 4710 transitions. [2021-10-06 21:06:49,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 21:06:49,711 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:06:49,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:49,713 INFO L225 Difference]: With dead ends: 1292 [2021-10-06 21:06:49,713 INFO L226 Difference]: Without dead ends: 1292 [2021-10-06 21:06:49,714 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 915.5ms TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:06:49,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-10-06 21:06:49,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 872. [2021-10-06 21:06:49,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 871 states have (on average 3.9781859931113663) internal successors, (3465), 871 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:49,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 3465 transitions. [2021-10-06 21:06:49,730 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 3465 transitions. Word has length 24 [2021-10-06 21:06:49,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:49,730 INFO L470 AbstractCegarLoop]: Abstraction has 872 states and 3465 transitions. [2021-10-06 21:06:49,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:49,731 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 3465 transitions. [2021-10-06 21:06:49,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:06:49,732 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:49,732 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:49,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (111)] Ended with exit code 0 [2021-10-06 21:06:49,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:06:49,933 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:06:49,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:49,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1795180958, now seen corresponding path program 41 times [2021-10-06 21:06:49,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:49,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252944940] [2021-10-06 21:06:49,935 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:06:49,936 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:49,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:49,937 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:06:49,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (112)] Waiting until timeout for monitored process [2021-10-06 21:06:52,001 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:06:52,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:52,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:06:52,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:52,569 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:52,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:52,824 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:52,825 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:52,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [252944940] [2021-10-06 21:06:52,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [252944940] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:06:52,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:06:52,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:06:52,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955689487] [2021-10-06 21:06:52,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:06:52,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:52,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:06:52,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:06:52,827 INFO L87 Difference]: Start difference. First operand 872 states and 3465 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:53,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:53,252 INFO L93 Difference]: Finished difference Result 1498 states and 5506 transitions. [2021-10-06 21:06:53,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:06:53,253 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:06:53,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:53,257 INFO L225 Difference]: With dead ends: 1498 [2021-10-06 21:06:53,257 INFO L226 Difference]: Without dead ends: 1498 [2021-10-06 21:06:53,257 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 360.4ms TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:06:53,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2021-10-06 21:06:53,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 872. [2021-10-06 21:06:53,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 871 states have (on average 3.980482204362801) internal successors, (3467), 871 states have internal predecessors, (3467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:53,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 3467 transitions. [2021-10-06 21:06:53,277 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 3467 transitions. Word has length 24 [2021-10-06 21:06:53,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:53,277 INFO L470 AbstractCegarLoop]: Abstraction has 872 states and 3467 transitions. [2021-10-06 21:06:53,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:53,277 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 3467 transitions. [2021-10-06 21:06:53,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:06:53,279 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:53,279 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:53,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (112)] Ended with exit code 0 [2021-10-06 21:06:53,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:06:53,480 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:06:53,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:53,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1050478460, now seen corresponding path program 42 times [2021-10-06 21:06:53,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:53,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682793373] [2021-10-06 21:06:53,482 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:06:53,482 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:53,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:53,484 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:06:53,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (113)] Waiting until timeout for monitored process [2021-10-06 21:06:55,644 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:06:55,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:55,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:06:55,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:56,169 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:56,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:56,420 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:56,421 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:56,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682793373] [2021-10-06 21:06:56,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1682793373] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:06:56,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:06:56,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:06:56,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357044023] [2021-10-06 21:06:56,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:06:56,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:56,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:06:56,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:06:56,423 INFO L87 Difference]: Start difference. First operand 872 states and 3467 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:56,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:56,945 INFO L93 Difference]: Finished difference Result 1488 states and 5484 transitions. [2021-10-06 21:06:56,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:06:56,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:06:56,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:56,950 INFO L225 Difference]: With dead ends: 1488 [2021-10-06 21:06:56,950 INFO L226 Difference]: Without dead ends: 1488 [2021-10-06 21:06:56,950 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 389.1ms TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:06:56,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2021-10-06 21:06:56,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 856. [2021-10-06 21:06:56,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 855 states have (on average 3.9567251461988304) internal successors, (3383), 855 states have internal predecessors, (3383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:56,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 3383 transitions. [2021-10-06 21:06:56,968 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 3383 transitions. Word has length 24 [2021-10-06 21:06:56,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:56,968 INFO L470 AbstractCegarLoop]: Abstraction has 856 states and 3383 transitions. [2021-10-06 21:06:56,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:56,969 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 3383 transitions. [2021-10-06 21:06:56,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:06:56,970 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:56,970 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:56,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (113)] Forceful destruction successful, exit code 0 [2021-10-06 21:06:57,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:06:57,171 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:06:57,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:57,173 INFO L82 PathProgramCache]: Analyzing trace with hash 219432948, now seen corresponding path program 39 times [2021-10-06 21:06:57,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:57,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [296123304] [2021-10-06 21:06:57,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:06:57,174 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:57,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:57,175 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:06:57,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (114)] Waiting until timeout for monitored process [2021-10-06 21:06:59,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:06:59,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:59,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:06:59,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:59,838 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:06:59,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:00,103 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:00,104 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:00,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [296123304] [2021-10-06 21:07:00,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [296123304] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:07:00,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:07:00,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:07:00,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65013918] [2021-10-06 21:07:00,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:07:00,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:00,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:07:00,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:07:00,106 INFO L87 Difference]: Start difference. First operand 856 states and 3383 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:00,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:00,504 INFO L93 Difference]: Finished difference Result 1266 states and 4584 transitions. [2021-10-06 21:07:00,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:07:00,505 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:07:00,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:00,508 INFO L225 Difference]: With dead ends: 1266 [2021-10-06 21:07:00,508 INFO L226 Difference]: Without dead ends: 1266 [2021-10-06 21:07:00,508 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 362.4ms TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:07:00,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2021-10-06 21:07:00,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 856. [2021-10-06 21:07:00,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 855 states have (on average 3.9590643274853803) internal successors, (3385), 855 states have internal predecessors, (3385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:00,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 3385 transitions. [2021-10-06 21:07:00,524 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 3385 transitions. Word has length 24 [2021-10-06 21:07:00,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:00,524 INFO L470 AbstractCegarLoop]: Abstraction has 856 states and 3385 transitions. [2021-10-06 21:07:00,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:00,525 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 3385 transitions. [2021-10-06 21:07:00,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:07:00,526 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:00,526 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:00,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (114)] Ended with exit code 0 [2021-10-06 21:07:00,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:07:00,727 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:07:00,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:00,728 INFO L82 PathProgramCache]: Analyzing trace with hash -975188394, now seen corresponding path program 40 times [2021-10-06 21:07:00,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:00,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938936385] [2021-10-06 21:07:00,729 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:07:00,729 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:00,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:00,730 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:07:00,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (115)] Waiting until timeout for monitored process [2021-10-06 21:07:02,717 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:07:02,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:07:02,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:07:02,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:03,279 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:03,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:03,558 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:03,558 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:03,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1938936385] [2021-10-06 21:07:03,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1938936385] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:07:03,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:07:03,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:07:03,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873056039] [2021-10-06 21:07:03,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:07:03,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:03,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:07:03,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:07:03,561 INFO L87 Difference]: Start difference. First operand 856 states and 3385 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:03,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:03,991 INFO L93 Difference]: Finished difference Result 1246 states and 4538 transitions. [2021-10-06 21:07:03,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:07:03,992 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:07:03,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:03,995 INFO L225 Difference]: With dead ends: 1246 [2021-10-06 21:07:03,995 INFO L226 Difference]: Without dead ends: 1246 [2021-10-06 21:07:03,995 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 392.2ms TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:07:03,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2021-10-06 21:07:04,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 834. [2021-10-06 21:07:04,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 833 states have (on average 3.921968787515006) internal successors, (3267), 833 states have internal predecessors, (3267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:04,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 3267 transitions. [2021-10-06 21:07:04,011 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 3267 transitions. Word has length 24 [2021-10-06 21:07:04,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:04,012 INFO L470 AbstractCegarLoop]: Abstraction has 834 states and 3267 transitions. [2021-10-06 21:07:04,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:04,012 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 3267 transitions. [2021-10-06 21:07:04,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:07:04,013 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:04,013 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:04,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (115)] Ended with exit code 0 [2021-10-06 21:07:04,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:07:04,216 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:07:04,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:04,216 INFO L82 PathProgramCache]: Analyzing trace with hash -446523758, now seen corresponding path program 41 times [2021-10-06 21:07:04,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:04,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90206124] [2021-10-06 21:07:04,217 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:07:04,218 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:04,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:04,219 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:07:04,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (116)] Waiting until timeout for monitored process [2021-10-06 21:07:06,318 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:07:06,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:07:06,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:07:06,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:06,488 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:06,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:06,610 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:06,611 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:06,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90206124] [2021-10-06 21:07:06,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90206124] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:07:06,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:07:06,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2021-10-06 21:07:06,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234445928] [2021-10-06 21:07:06,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:07:06,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:06,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:07:06,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:07:06,613 INFO L87 Difference]: Start difference. First operand 834 states and 3267 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:07,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:07,025 INFO L93 Difference]: Finished difference Result 1090 states and 4011 transitions. [2021-10-06 21:07:07,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:07:07,026 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:07:07,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:07,028 INFO L225 Difference]: With dead ends: 1090 [2021-10-06 21:07:07,028 INFO L226 Difference]: Without dead ends: 1076 [2021-10-06 21:07:07,029 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 259.0ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:07:07,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2021-10-06 21:07:07,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 840. [2021-10-06 21:07:07,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 839 states have (on average 3.911799761620977) internal successors, (3282), 839 states have internal predecessors, (3282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:07,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 3282 transitions. [2021-10-06 21:07:07,045 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 3282 transitions. Word has length 24 [2021-10-06 21:07:07,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:07,045 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 3282 transitions. [2021-10-06 21:07:07,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:07,045 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 3282 transitions. [2021-10-06 21:07:07,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:07:07,047 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:07,047 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:07,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (116)] Forceful destruction successful, exit code 0 [2021-10-06 21:07:07,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:07:07,250 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:07:07,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:07,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1861494010, now seen corresponding path program 43 times [2021-10-06 21:07:07,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:07,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59725364] [2021-10-06 21:07:07,251 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:07:07,252 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:07,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:07,253 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:07:07,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (117)] Waiting until timeout for monitored process [2021-10-06 21:07:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:07:09,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:07:09,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:09,421 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:09,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:09,540 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:09,541 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:09,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59725364] [2021-10-06 21:07:09,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59725364] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:07:09,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:07:09,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2021-10-06 21:07:09,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996037676] [2021-10-06 21:07:09,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:07:09,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:09,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:07:09,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:07:09,543 INFO L87 Difference]: Start difference. First operand 840 states and 3282 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:09,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:09,814 INFO L93 Difference]: Finished difference Result 1186 states and 4337 transitions. [2021-10-06 21:07:09,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:07:09,814 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:07:09,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:09,817 INFO L225 Difference]: With dead ends: 1186 [2021-10-06 21:07:09,817 INFO L226 Difference]: Without dead ends: 1186 [2021-10-06 21:07:09,818 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 143.7ms TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:07:09,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2021-10-06 21:07:09,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 840. [2021-10-06 21:07:09,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 839 states have (on average 3.911799761620977) internal successors, (3282), 839 states have internal predecessors, (3282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:09,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 3282 transitions. [2021-10-06 21:07:09,833 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 3282 transitions. Word has length 24 [2021-10-06 21:07:09,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:09,834 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 3282 transitions. [2021-10-06 21:07:09,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:09,834 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 3282 transitions. [2021-10-06 21:07:09,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:07:09,835 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:09,836 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:09,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (117)] Ended with exit code 0 [2021-10-06 21:07:10,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 117 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:07:10,037 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:07:10,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:10,037 INFO L82 PathProgramCache]: Analyzing trace with hash -2052393780, now seen corresponding path program 42 times [2021-10-06 21:07:10,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:10,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097520552] [2021-10-06 21:07:10,039 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:07:10,039 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:10,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:10,042 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:07:10,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (118)] Waiting until timeout for monitored process [2021-10-06 21:07:12,417 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:07:12,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:07:12,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:07:12,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:12,662 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:12,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:12,832 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:12,833 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:12,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097520552] [2021-10-06 21:07:12,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097520552] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:07:12,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:07:12,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-10-06 21:07:12,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544275503] [2021-10-06 21:07:12,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:07:12,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:12,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:07:12,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:07:12,835 INFO L87 Difference]: Start difference. First operand 840 states and 3282 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:13,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:13,504 INFO L93 Difference]: Finished difference Result 1106 states and 4052 transitions. [2021-10-06 21:07:13,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 21:07:13,505 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:07:13,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:13,507 INFO L225 Difference]: With dead ends: 1106 [2021-10-06 21:07:13,508 INFO L226 Difference]: Without dead ends: 1100 [2021-10-06 21:07:13,508 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 491.2ms TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:07:13,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2021-10-06 21:07:13,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 852. [2021-10-06 21:07:13,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 851 states have (on average 3.918918918918919) internal successors, (3335), 851 states have internal predecessors, (3335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:13,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 3335 transitions. [2021-10-06 21:07:13,524 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 3335 transitions. Word has length 24 [2021-10-06 21:07:13,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:13,524 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 3335 transitions. [2021-10-06 21:07:13,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:13,524 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 3335 transitions. [2021-10-06 21:07:13,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:07:13,526 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:13,526 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:13,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (118)] Ended with exit code 0 [2021-10-06 21:07:13,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:07:13,727 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:07:13,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:13,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1522308358, now seen corresponding path program 44 times [2021-10-06 21:07:13,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:13,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302392341] [2021-10-06 21:07:13,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:07:13,730 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:13,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:13,731 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:07:13,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (119)] Waiting until timeout for monitored process [2021-10-06 21:07:16,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:07:16,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:07:16,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:07:16,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:16,248 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:16,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:16,393 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:16,394 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:16,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302392341] [2021-10-06 21:07:16,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302392341] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:07:16,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:07:16,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-10-06 21:07:16,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698241200] [2021-10-06 21:07:16,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:07:16,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:16,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:07:16,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:07:16,396 INFO L87 Difference]: Start difference. First operand 852 states and 3335 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:16,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:16,998 INFO L93 Difference]: Finished difference Result 1240 states and 4491 transitions. [2021-10-06 21:07:16,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:07:16,999 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:07:16,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:17,002 INFO L225 Difference]: With dead ends: 1240 [2021-10-06 21:07:17,002 INFO L226 Difference]: Without dead ends: 1236 [2021-10-06 21:07:17,002 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 453.2ms TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:07:17,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2021-10-06 21:07:17,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 860. [2021-10-06 21:07:17,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 859 states have (on average 3.9220023282887078) internal successors, (3369), 859 states have internal predecessors, (3369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:17,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 3369 transitions. [2021-10-06 21:07:17,019 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 3369 transitions. Word has length 24 [2021-10-06 21:07:17,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:17,020 INFO L470 AbstractCegarLoop]: Abstraction has 860 states and 3369 transitions. [2021-10-06 21:07:17,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:17,020 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 3369 transitions. [2021-10-06 21:07:17,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:07:17,021 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:17,021 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:17,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (119)] Forceful destruction successful, exit code 0 [2021-10-06 21:07:17,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:07:17,222 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:07:17,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:17,223 INFO L82 PathProgramCache]: Analyzing trace with hash -677076106, now seen corresponding path program 45 times [2021-10-06 21:07:17,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:17,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074118475] [2021-10-06 21:07:17,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:07:17,225 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:17,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:17,227 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:07:17,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (120)] Waiting until timeout for monitored process [2021-10-06 21:07:19,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:07:19,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:07:19,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:07:19,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:19,699 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:19,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:19,857 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:19,857 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:19,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1074118475] [2021-10-06 21:07:19,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1074118475] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:07:19,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:07:19,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-10-06 21:07:19,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967343344] [2021-10-06 21:07:19,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:07:19,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:19,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:07:19,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:07:19,859 INFO L87 Difference]: Start difference. First operand 860 states and 3369 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:20,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:20,145 INFO L93 Difference]: Finished difference Result 1204 states and 4423 transitions. [2021-10-06 21:07:20,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:07:20,146 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:07:20,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:20,149 INFO L225 Difference]: With dead ends: 1204 [2021-10-06 21:07:20,149 INFO L226 Difference]: Without dead ends: 1204 [2021-10-06 21:07:20,149 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 203.7ms TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:07:20,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2021-10-06 21:07:20,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 852. [2021-10-06 21:07:20,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 851 states have (on average 3.9142185663924796) internal successors, (3331), 851 states have internal predecessors, (3331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:20,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 3331 transitions. [2021-10-06 21:07:20,165 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 3331 transitions. Word has length 24 [2021-10-06 21:07:20,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:20,166 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 3331 transitions. [2021-10-06 21:07:20,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:20,166 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 3331 transitions. [2021-10-06 21:07:20,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:07:20,167 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:20,167 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:20,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (120)] Forceful destruction successful, exit code 0 [2021-10-06 21:07:20,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:07:20,368 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:07:20,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:20,369 INFO L82 PathProgramCache]: Analyzing trace with hash 80648100, now seen corresponding path program 43 times [2021-10-06 21:07:20,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:20,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445638118] [2021-10-06 21:07:20,370 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:07:20,371 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:20,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:20,372 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:07:20,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (121)] Waiting until timeout for monitored process [2021-10-06 21:07:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:07:22,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:07:22,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:22,687 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:22,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:22,855 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:22,855 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:22,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445638118] [2021-10-06 21:07:22,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1445638118] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:07:22,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:07:22,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-10-06 21:07:22,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602340556] [2021-10-06 21:07:22,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:07:22,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:22,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:07:22,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:07:22,857 INFO L87 Difference]: Start difference. First operand 852 states and 3331 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:23,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:23,400 INFO L93 Difference]: Finished difference Result 1070 states and 3976 transitions. [2021-10-06 21:07:23,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:07:23,402 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:07:23,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:23,404 INFO L225 Difference]: With dead ends: 1070 [2021-10-06 21:07:23,404 INFO L226 Difference]: Without dead ends: 1070 [2021-10-06 21:07:23,404 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 347.1ms TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:07:23,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2021-10-06 21:07:23,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 834. [2021-10-06 21:07:23,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 833 states have (on average 3.921968787515006) internal successors, (3267), 833 states have internal predecessors, (3267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:23,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 3267 transitions. [2021-10-06 21:07:23,420 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 3267 transitions. Word has length 24 [2021-10-06 21:07:23,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:23,420 INFO L470 AbstractCegarLoop]: Abstraction has 834 states and 3267 transitions. [2021-10-06 21:07:23,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:23,420 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 3267 transitions. [2021-10-06 21:07:23,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:07:23,422 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:23,422 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:23,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (121)] Forceful destruction successful, exit code 0 [2021-10-06 21:07:23,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:07:23,623 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:07:23,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:23,623 INFO L82 PathProgramCache]: Analyzing trace with hash 786812100, now seen corresponding path program 46 times [2021-10-06 21:07:23,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:23,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365347475] [2021-10-06 21:07:23,625 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:07:23,625 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:23,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:23,626 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:07:23,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (122)] Waiting until timeout for monitored process [2021-10-06 21:07:25,751 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:07:25,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:07:25,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:07:25,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:25,978 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:25,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:26,133 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:26,133 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:26,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365347475] [2021-10-06 21:07:26,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365347475] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:07:26,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:07:26,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-10-06 21:07:26,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105558629] [2021-10-06 21:07:26,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:07:26,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:26,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:07:26,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:07:26,136 INFO L87 Difference]: Start difference. First operand 834 states and 3267 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:26,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:26,744 INFO L93 Difference]: Finished difference Result 1052 states and 3913 transitions. [2021-10-06 21:07:26,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 21:07:26,745 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:07:26,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:26,748 INFO L225 Difference]: With dead ends: 1052 [2021-10-06 21:07:26,748 INFO L226 Difference]: Without dead ends: 1048 [2021-10-06 21:07:26,748 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 476.5ms TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:07:26,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2021-10-06 21:07:26,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 842. [2021-10-06 21:07:26,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 841 states have (on average 3.925089179548157) internal successors, (3301), 841 states have internal predecessors, (3301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:26,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 3301 transitions. [2021-10-06 21:07:26,768 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 3301 transitions. Word has length 24 [2021-10-06 21:07:26,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:26,769 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 3301 transitions. [2021-10-06 21:07:26,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:26,769 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 3301 transitions. [2021-10-06 21:07:26,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:07:26,771 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:26,771 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:26,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (122)] Forceful destruction successful, exit code 0 [2021-10-06 21:07:26,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:07:26,972 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:07:26,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:26,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1632044352, now seen corresponding path program 47 times [2021-10-06 21:07:26,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:26,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659651077] [2021-10-06 21:07:26,974 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:07:26,975 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:26,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:26,975 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:07:26,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (123)] Waiting until timeout for monitored process [2021-10-06 21:07:29,156 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:07:29,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:07:29,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:07:29,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:29,446 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:29,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:29,611 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:29,611 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:29,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659651077] [2021-10-06 21:07:29,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659651077] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:07:29,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:07:29,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-10-06 21:07:29,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60037881] [2021-10-06 21:07:29,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:07:29,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:29,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:07:29,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:07:29,613 INFO L87 Difference]: Start difference. First operand 842 states and 3301 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:29,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:29,964 INFO L93 Difference]: Finished difference Result 1028 states and 3860 transitions. [2021-10-06 21:07:29,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:07:29,966 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:07:29,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:29,968 INFO L225 Difference]: With dead ends: 1028 [2021-10-06 21:07:29,968 INFO L226 Difference]: Without dead ends: 1028 [2021-10-06 21:07:29,968 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 217.1ms TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:07:29,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2021-10-06 21:07:29,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 834. [2021-10-06 21:07:29,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 833 states have (on average 3.917166866746699) internal successors, (3263), 833 states have internal predecessors, (3263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:29,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 3263 transitions. [2021-10-06 21:07:29,983 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 3263 transitions. Word has length 24 [2021-10-06 21:07:29,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:29,984 INFO L470 AbstractCegarLoop]: Abstraction has 834 states and 3263 transitions. [2021-10-06 21:07:29,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:29,984 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 3263 transitions. [2021-10-06 21:07:29,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:07:29,985 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:29,985 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:30,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (123)] Forceful destruction successful, exit code 0 [2021-10-06 21:07:30,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 123 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:07:30,186 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:07:30,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:30,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1160496240, now seen corresponding path program 44 times [2021-10-06 21:07:30,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:30,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [945631602] [2021-10-06 21:07:30,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:07:30,189 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:30,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:30,191 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:07:30,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (124)] Waiting until timeout for monitored process [2021-10-06 21:07:32,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:07:32,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:07:32,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:07:32,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:32,624 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:32,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:32,776 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:32,776 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:32,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [945631602] [2021-10-06 21:07:32,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [945631602] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:07:32,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:07:32,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-10-06 21:07:32,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892355402] [2021-10-06 21:07:32,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:07:32,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:32,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:07:32,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:07:32,778 INFO L87 Difference]: Start difference. First operand 834 states and 3263 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:33,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:33,080 INFO L93 Difference]: Finished difference Result 1180 states and 4280 transitions. [2021-10-06 21:07:33,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:07:33,081 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:07:33,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:33,083 INFO L225 Difference]: With dead ends: 1180 [2021-10-06 21:07:33,084 INFO L226 Difference]: Without dead ends: 1180 [2021-10-06 21:07:33,084 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 194.3ms TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:07:33,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2021-10-06 21:07:33,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 838. [2021-10-06 21:07:33,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 3.925925925925926) internal successors, (3286), 837 states have internal predecessors, (3286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:33,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 3286 transitions. [2021-10-06 21:07:33,100 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 3286 transitions. Word has length 24 [2021-10-06 21:07:33,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:33,100 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 3286 transitions. [2021-10-06 21:07:33,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:33,100 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 3286 transitions. [2021-10-06 21:07:33,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:07:33,102 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:33,102 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:33,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (124)] Ended with exit code 0 [2021-10-06 21:07:33,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:07:33,304 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:07:33,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:33,304 INFO L82 PathProgramCache]: Analyzing trace with hash -149143978, now seen corresponding path program 45 times [2021-10-06 21:07:33,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:33,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852421570] [2021-10-06 21:07:33,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:07:33,306 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:33,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:33,307 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:07:33,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (125)] Waiting until timeout for monitored process [2021-10-06 21:07:35,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:07:35,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:07:35,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:07:35,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:35,779 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:35,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:35,902 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:35,903 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:35,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852421570] [2021-10-06 21:07:35,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852421570] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:07:35,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:07:35,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2021-10-06 21:07:35,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021336382] [2021-10-06 21:07:35,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:07:35,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:35,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:07:35,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:07:35,905 INFO L87 Difference]: Start difference. First operand 838 states and 3286 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:36,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:36,183 INFO L93 Difference]: Finished difference Result 1126 states and 4157 transitions. [2021-10-06 21:07:36,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:07:36,183 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:07:36,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:36,187 INFO L225 Difference]: With dead ends: 1126 [2021-10-06 21:07:36,187 INFO L226 Difference]: Without dead ends: 1126 [2021-10-06 21:07:36,187 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 144.1ms TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:07:36,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2021-10-06 21:07:36,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 828. [2021-10-06 21:07:36,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 827 states have (on average 3.9274486094316807) internal successors, (3248), 827 states have internal predecessors, (3248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:36,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 3248 transitions. [2021-10-06 21:07:36,203 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 3248 transitions. Word has length 24 [2021-10-06 21:07:36,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:36,203 INFO L470 AbstractCegarLoop]: Abstraction has 828 states and 3248 transitions. [2021-10-06 21:07:36,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:36,203 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 3248 transitions. [2021-10-06 21:07:36,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:07:36,205 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:36,205 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:36,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (125)] Forceful destruction successful, exit code 0 [2021-10-06 21:07:36,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:07:36,405 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:07:36,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:36,406 INFO L82 PathProgramCache]: Analyzing trace with hash 651413114, now seen corresponding path program 48 times [2021-10-06 21:07:36,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:36,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [865306693] [2021-10-06 21:07:36,407 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:07:36,408 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:36,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:36,409 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:07:36,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (126)] Waiting until timeout for monitored process [2021-10-06 21:07:38,750 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:07:38,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:07:38,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:07:38,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:39,101 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:39,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:39,321 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:39,322 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:39,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [865306693] [2021-10-06 21:07:39,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [865306693] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:07:39,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:07:39,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:07:39,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834531253] [2021-10-06 21:07:39,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:07:39,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:39,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:07:39,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:07:39,323 INFO L87 Difference]: Start difference. First operand 828 states and 3248 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:40,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:40,304 INFO L93 Difference]: Finished difference Result 1164 states and 4270 transitions. [2021-10-06 21:07:40,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 21:07:40,305 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:07:40,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:40,308 INFO L225 Difference]: With dead ends: 1164 [2021-10-06 21:07:40,308 INFO L226 Difference]: Without dead ends: 1160 [2021-10-06 21:07:40,308 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 802.4ms TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:07:40,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2021-10-06 21:07:40,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 838. [2021-10-06 21:07:40,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 3.9295101553166067) internal successors, (3289), 837 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:40,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 3289 transitions. [2021-10-06 21:07:40,324 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 3289 transitions. Word has length 24 [2021-10-06 21:07:40,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:40,324 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 3289 transitions. [2021-10-06 21:07:40,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:40,324 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 3289 transitions. [2021-10-06 21:07:40,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:07:40,325 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:40,325 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:40,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (126)] Forceful destruction successful, exit code 0 [2021-10-06 21:07:40,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:07:40,526 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:07:40,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:40,528 INFO L82 PathProgramCache]: Analyzing trace with hash -858998090, now seen corresponding path program 49 times [2021-10-06 21:07:40,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:40,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1312924478] [2021-10-06 21:07:40,529 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:07:40,529 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:40,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:40,531 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:07:40,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (127)] Waiting until timeout for monitored process [2021-10-06 21:07:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:07:42,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:07:42,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:43,032 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:43,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:43,259 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:43,259 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:43,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1312924478] [2021-10-06 21:07:43,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1312924478] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:07:43,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:07:43,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:07:43,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876016752] [2021-10-06 21:07:43,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:07:43,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:43,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:07:43,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:07:43,261 INFO L87 Difference]: Start difference. First operand 838 states and 3289 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:43,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:43,600 INFO L93 Difference]: Finished difference Result 1140 states and 4229 transitions. [2021-10-06 21:07:43,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:07:43,601 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:07:43,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:43,603 INFO L225 Difference]: With dead ends: 1140 [2021-10-06 21:07:43,604 INFO L226 Difference]: Without dead ends: 1140 [2021-10-06 21:07:43,604 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 306.9ms TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:07:43,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2021-10-06 21:07:43,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 832. [2021-10-06 21:07:43,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 831 states have (on average 3.930204572803851) internal successors, (3266), 831 states have internal predecessors, (3266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:43,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 3266 transitions. [2021-10-06 21:07:43,628 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 3266 transitions. Word has length 24 [2021-10-06 21:07:43,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:43,628 INFO L470 AbstractCegarLoop]: Abstraction has 832 states and 3266 transitions. [2021-10-06 21:07:43,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:43,629 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 3266 transitions. [2021-10-06 21:07:43,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:07:43,631 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:43,631 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:43,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (127)] Forceful destruction successful, exit code 0 [2021-10-06 21:07:43,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:07:43,846 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:07:43,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:43,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1689976838, now seen corresponding path program 50 times [2021-10-06 21:07:43,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:43,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138090505] [2021-10-06 21:07:43,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:07:43,848 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:43,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:43,850 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:07:43,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (128)] Waiting until timeout for monitored process [2021-10-06 21:07:46,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:07:46,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:07:46,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:07:46,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:46,583 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:46,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:46,769 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:46,770 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:46,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138090505] [2021-10-06 21:07:46,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138090505] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:07:46,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:07:46,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-10-06 21:07:46,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351103657] [2021-10-06 21:07:46,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:07:46,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:46,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:07:46,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:07:46,772 INFO L87 Difference]: Start difference. First operand 832 states and 3266 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:47,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:47,366 INFO L93 Difference]: Finished difference Result 1138 states and 4212 transitions. [2021-10-06 21:07:47,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:07:47,366 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:07:47,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:47,369 INFO L225 Difference]: With dead ends: 1138 [2021-10-06 21:07:47,369 INFO L226 Difference]: Without dead ends: 1130 [2021-10-06 21:07:47,369 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 442.3ms TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:07:47,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2021-10-06 21:07:47,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 832. [2021-10-06 21:07:47,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 831 states have (on average 3.927797833935018) internal successors, (3264), 831 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:47,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 3264 transitions. [2021-10-06 21:07:47,386 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 3264 transitions. Word has length 24 [2021-10-06 21:07:47,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:47,386 INFO L470 AbstractCegarLoop]: Abstraction has 832 states and 3264 transitions. [2021-10-06 21:07:47,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:47,387 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 3264 transitions. [2021-10-06 21:07:47,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:07:47,389 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:47,389 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:47,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (128)] Forceful destruction successful, exit code 0 [2021-10-06 21:07:47,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:07:47,591 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:07:47,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:47,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1078523192, now seen corresponding path program 46 times [2021-10-06 21:07:47,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:47,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1292418997] [2021-10-06 21:07:47,593 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:07:47,594 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:47,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:47,596 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:07:47,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (129)] Waiting until timeout for monitored process [2021-10-06 21:07:49,732 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:07:49,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:07:49,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:07:49,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:50,241 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:50,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:50,463 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:50,463 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:50,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1292418997] [2021-10-06 21:07:50,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1292418997] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:07:50,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:07:50,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:07:50,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538037785] [2021-10-06 21:07:50,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:07:50,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:50,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:07:50,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:07:50,466 INFO L87 Difference]: Start difference. First operand 832 states and 3264 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:51,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:51,595 INFO L93 Difference]: Finished difference Result 1390 states and 5066 transitions. [2021-10-06 21:07:51,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:07:51,595 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:07:51,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:51,599 INFO L225 Difference]: With dead ends: 1390 [2021-10-06 21:07:51,600 INFO L226 Difference]: Without dead ends: 1384 [2021-10-06 21:07:51,600 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 939.2ms TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:07:51,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2021-10-06 21:07:51,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 848. [2021-10-06 21:07:51,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 847 states have (on average 3.9527744982290436) internal successors, (3348), 847 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:51,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 3348 transitions. [2021-10-06 21:07:51,620 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 3348 transitions. Word has length 24 [2021-10-06 21:07:51,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:51,620 INFO L470 AbstractCegarLoop]: Abstraction has 848 states and 3348 transitions. [2021-10-06 21:07:51,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:51,621 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 3348 transitions. [2021-10-06 21:07:51,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:07:51,623 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:51,623 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:51,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (129)] Ended with exit code 0 [2021-10-06 21:07:51,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:07:51,827 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:07:51,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:51,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1382901570, now seen corresponding path program 47 times [2021-10-06 21:07:51,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:51,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286547786] [2021-10-06 21:07:51,829 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:07:51,830 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:51,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:51,831 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:07:51,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (130)] Waiting until timeout for monitored process [2021-10-06 21:07:54,071 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:07:54,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:07:54,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:07:54,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:54,574 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:54,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:54,800 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:54,800 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:54,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286547786] [2021-10-06 21:07:54,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286547786] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:07:54,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:07:54,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:07:54,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780362387] [2021-10-06 21:07:54,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:07:54,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:54,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:07:54,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:07:54,802 INFO L87 Difference]: Start difference. First operand 848 states and 3348 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:55,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:55,174 INFO L93 Difference]: Finished difference Result 1354 states and 5010 transitions. [2021-10-06 21:07:55,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:07:55,175 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:07:55,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:55,178 INFO L225 Difference]: With dead ends: 1354 [2021-10-06 21:07:55,178 INFO L226 Difference]: Without dead ends: 1354 [2021-10-06 21:07:55,178 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 336.3ms TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:07:55,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2021-10-06 21:07:55,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 846. [2021-10-06 21:07:55,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 845 states have (on average 3.9562130177514794) internal successors, (3343), 845 states have internal predecessors, (3343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:55,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 3343 transitions. [2021-10-06 21:07:55,200 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 3343 transitions. Word has length 24 [2021-10-06 21:07:55,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:55,200 INFO L470 AbstractCegarLoop]: Abstraction has 846 states and 3343 transitions. [2021-10-06 21:07:55,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:55,201 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 3343 transitions. [2021-10-06 21:07:55,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:07:55,203 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:55,203 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:55,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (130)] Ended with exit code 0 [2021-10-06 21:07:55,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:07:55,417 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:07:55,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:55,417 INFO L82 PathProgramCache]: Analyzing trace with hash 2146091672, now seen corresponding path program 51 times [2021-10-06 21:07:55,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:55,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1652500276] [2021-10-06 21:07:55,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:07:55,419 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:55,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:55,420 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:07:55,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (131)] Waiting until timeout for monitored process [2021-10-06 21:07:57,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:07:57,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:07:57,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:07:57,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:58,308 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:58,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:58,547 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:07:58,548 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:58,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1652500276] [2021-10-06 21:07:58,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1652500276] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:07:58,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:07:58,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:07:58,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106481133] [2021-10-06 21:07:58,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:07:58,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:58,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:07:58,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:07:58,549 INFO L87 Difference]: Start difference. First operand 846 states and 3343 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:59,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:59,684 INFO L93 Difference]: Finished difference Result 1204 states and 4396 transitions. [2021-10-06 21:07:59,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:07:59,684 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:07:59,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:59,687 INFO L225 Difference]: With dead ends: 1204 [2021-10-06 21:07:59,687 INFO L226 Difference]: Without dead ends: 1200 [2021-10-06 21:07:59,687 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1014.9ms TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:07:59,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2021-10-06 21:07:59,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 856. [2021-10-06 21:07:59,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 855 states have (on average 3.967251461988304) internal successors, (3392), 855 states have internal predecessors, (3392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:59,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 3392 transitions. [2021-10-06 21:07:59,704 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 3392 transitions. Word has length 24 [2021-10-06 21:07:59,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:59,704 INFO L470 AbstractCegarLoop]: Abstraction has 856 states and 3392 transitions. [2021-10-06 21:07:59,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:59,704 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 3392 transitions. [2021-10-06 21:07:59,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:07:59,706 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:59,706 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:59,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (131)] Forceful destruction successful, exit code 0 [2021-10-06 21:07:59,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:07:59,907 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:07:59,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:59,908 INFO L82 PathProgramCache]: Analyzing trace with hash 635680468, now seen corresponding path program 52 times [2021-10-06 21:07:59,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:59,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [748981253] [2021-10-06 21:07:59,909 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:07:59,909 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:59,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:59,910 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:07:59,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (132)] Waiting until timeout for monitored process [2021-10-06 21:08:02,010 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:08:02,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:08:02,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:08:02,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:08:02,564 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:08:02,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:08:02,832 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:08:02,833 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:08:02,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [748981253] [2021-10-06 21:08:02,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [748981253] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:08:02,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:08:02,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:08:02,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082011626] [2021-10-06 21:08:02,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:08:02,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:08:02,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:08:02,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:08:02,835 INFO L87 Difference]: Start difference. First operand 856 states and 3392 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:03,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:08:03,256 INFO L93 Difference]: Finished difference Result 1202 states and 4410 transitions. [2021-10-06 21:08:03,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:08:03,257 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:08:03,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:08:03,260 INFO L225 Difference]: With dead ends: 1202 [2021-10-06 21:08:03,260 INFO L226 Difference]: Without dead ends: 1202 [2021-10-06 21:08:03,260 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 407.0ms TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:08:03,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2021-10-06 21:08:03,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 854. [2021-10-06 21:08:03,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 3.970691676436108) internal successors, (3387), 853 states have internal predecessors, (3387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:03,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 3387 transitions. [2021-10-06 21:08:03,281 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 3387 transitions. Word has length 24 [2021-10-06 21:08:03,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:08:03,282 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 3387 transitions. [2021-10-06 21:08:03,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:03,282 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 3387 transitions. [2021-10-06 21:08:03,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:08:03,284 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:08:03,284 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:08:03,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (132)] Ended with exit code 0 [2021-10-06 21:08:03,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:08:03,485 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:08:03,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:08:03,486 INFO L82 PathProgramCache]: Analyzing trace with hash 15568396, now seen corresponding path program 48 times [2021-10-06 21:08:03,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:08:03,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [473516778] [2021-10-06 21:08:03,488 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:08:03,488 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:08:03,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:08:03,489 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:08:03,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (133)] Waiting until timeout for monitored process [2021-10-06 21:08:05,994 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:08:05,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:08:06,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:08:06,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:08:06,441 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:08:06,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:08:06,708 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:08:06,709 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:08:06,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [473516778] [2021-10-06 21:08:06,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [473516778] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:08:06,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:08:06,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:08:06,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254193062] [2021-10-06 21:08:06,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:08:06,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:08:06,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:08:06,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:08:06,711 INFO L87 Difference]: Start difference. First operand 854 states and 3387 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:07,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:08:07,750 INFO L93 Difference]: Finished difference Result 1434 states and 5187 transitions. [2021-10-06 21:08:07,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:08:07,751 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:08:07,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:08:07,754 INFO L225 Difference]: With dead ends: 1434 [2021-10-06 21:08:07,754 INFO L226 Difference]: Without dead ends: 1428 [2021-10-06 21:08:07,754 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 919.3ms TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:08:07,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2021-10-06 21:08:07,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 866. [2021-10-06 21:08:07,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 865 states have (on average 3.976878612716763) internal successors, (3440), 865 states have internal predecessors, (3440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:07,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 3440 transitions. [2021-10-06 21:08:07,772 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 3440 transitions. Word has length 24 [2021-10-06 21:08:07,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:08:07,772 INFO L470 AbstractCegarLoop]: Abstraction has 866 states and 3440 transitions. [2021-10-06 21:08:07,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:07,773 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 3440 transitions. [2021-10-06 21:08:07,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:08:07,774 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:08:07,774 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:08:07,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (133)] Forceful destruction successful, exit code 0 [2021-10-06 21:08:07,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:08:07,976 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:08:07,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:08:07,977 INFO L82 PathProgramCache]: Analyzing trace with hash 545653818, now seen corresponding path program 53 times [2021-10-06 21:08:07,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:08:07,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [648189940] [2021-10-06 21:08:07,978 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:08:07,979 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:08:07,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:08:07,979 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:08:07,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (134)] Waiting until timeout for monitored process [2021-10-06 21:08:10,257 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:08:10,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:08:10,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:08:10,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:08:10,711 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:08:10,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:08:10,941 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:08:10,941 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:08:10,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [648189940] [2021-10-06 21:08:10,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [648189940] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:08:10,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:08:10,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:08:10,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898304049] [2021-10-06 21:08:10,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:08:10,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:08:10,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:08:10,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:08:10,944 INFO L87 Difference]: Start difference. First operand 866 states and 3440 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:12,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:08:12,193 INFO L93 Difference]: Finished difference Result 1220 states and 4483 transitions. [2021-10-06 21:08:12,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:08:12,194 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:08:12,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:08:12,196 INFO L225 Difference]: With dead ends: 1220 [2021-10-06 21:08:12,196 INFO L226 Difference]: Without dead ends: 1216 [2021-10-06 21:08:12,197 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1047.6ms TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:08:12,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2021-10-06 21:08:12,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 874. [2021-10-06 21:08:12,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 873 states have (on average 3.979381443298969) internal successors, (3474), 873 states have internal predecessors, (3474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:12,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 3474 transitions. [2021-10-06 21:08:12,213 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 3474 transitions. Word has length 24 [2021-10-06 21:08:12,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:08:12,213 INFO L470 AbstractCegarLoop]: Abstraction has 874 states and 3474 transitions. [2021-10-06 21:08:12,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:12,213 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 3474 transitions. [2021-10-06 21:08:12,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:08:12,215 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:08:12,215 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:08:12,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (134)] Forceful destruction successful, exit code 0 [2021-10-06 21:08:12,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:08:12,416 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:08:12,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:08:12,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1390886070, now seen corresponding path program 54 times [2021-10-06 21:08:12,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:08:12,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214800145] [2021-10-06 21:08:12,418 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:08:12,418 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:08:12,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:08:12,419 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:08:12,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (135)] Waiting until timeout for monitored process [2021-10-06 21:08:14,905 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:08:14,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:08:14,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:08:14,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:08:15,364 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:08:15,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:08:15,603 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:08:15,604 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:08:15,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214800145] [2021-10-06 21:08:15,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214800145] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:08:15,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:08:15,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:08:15,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288641425] [2021-10-06 21:08:15,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:08:15,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:08:15,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:08:15,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:08:15,605 INFO L87 Difference]: Start difference. First operand 874 states and 3474 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:16,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:08:16,018 INFO L93 Difference]: Finished difference Result 1208 states and 4489 transitions. [2021-10-06 21:08:16,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:08:16,019 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:08:16,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:08:16,021 INFO L225 Difference]: With dead ends: 1208 [2021-10-06 21:08:16,022 INFO L226 Difference]: Without dead ends: 1208 [2021-10-06 21:08:16,022 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 384.5ms TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:08:16,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2021-10-06 21:08:16,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 874. [2021-10-06 21:08:16,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 873 states have (on average 3.979381443298969) internal successors, (3474), 873 states have internal predecessors, (3474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:16,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 3474 transitions. [2021-10-06 21:08:16,039 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 3474 transitions. Word has length 24 [2021-10-06 21:08:16,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:08:16,039 INFO L470 AbstractCegarLoop]: Abstraction has 874 states and 3474 transitions. [2021-10-06 21:08:16,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:16,039 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 3474 transitions. [2021-10-06 21:08:16,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:08:16,041 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:08:16,079 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:08:16,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (135)] Ended with exit code 0 [2021-10-06 21:08:16,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:08:16,280 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:08:16,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:08:16,281 INFO L82 PathProgramCache]: Analyzing trace with hash -2146357020, now seen corresponding path program 49 times [2021-10-06 21:08:16,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:08:16,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1821176021] [2021-10-06 21:08:16,282 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:08:16,283 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:08:16,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:08:16,284 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:08:16,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (136)] Waiting until timeout for monitored process [2021-10-06 21:08:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:08:18,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:08:18,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:08:18,998 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:08:18,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:08:19,227 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:08:19,228 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:08:19,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1821176021] [2021-10-06 21:08:19,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1821176021] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:08:19,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:08:19,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:08:19,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505620453] [2021-10-06 21:08:19,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:08:19,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:08:19,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:08:19,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:08:19,230 INFO L87 Difference]: Start difference. First operand 874 states and 3474 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:20,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:08:20,387 INFO L93 Difference]: Finished difference Result 1434 states and 5246 transitions. [2021-10-06 21:08:20,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:08:20,388 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:08:20,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:08:20,391 INFO L225 Difference]: With dead ends: 1434 [2021-10-06 21:08:20,392 INFO L226 Difference]: Without dead ends: 1434 [2021-10-06 21:08:20,392 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 976.0ms TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:08:20,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2021-10-06 21:08:20,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 870. [2021-10-06 21:08:20,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 3.9850402761795167) internal successors, (3463), 869 states have internal predecessors, (3463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:20,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 3463 transitions. [2021-10-06 21:08:20,412 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 3463 transitions. Word has length 24 [2021-10-06 21:08:20,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:08:20,412 INFO L470 AbstractCegarLoop]: Abstraction has 870 states and 3463 transitions. [2021-10-06 21:08:20,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:20,412 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 3463 transitions. [2021-10-06 21:08:20,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:08:20,456 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:08:20,456 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:08:20,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (136)] Forceful destruction successful, exit code 0 [2021-10-06 21:08:20,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:08:20,657 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:08:20,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:08:20,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1068076504, now seen corresponding path program 55 times [2021-10-06 21:08:20,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:08:20,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426788369] [2021-10-06 21:08:20,659 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:08:20,660 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:08:20,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:08:20,661 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:08:20,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (137)] Waiting until timeout for monitored process [2021-10-06 21:08:22,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:08:22,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:08:22,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:08:23,428 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:08:23,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:08:23,686 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:08:23,687 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:08:23,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426788369] [2021-10-06 21:08:23,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426788369] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:08:23,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:08:23,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:08:23,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775548323] [2021-10-06 21:08:23,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:08:23,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:08:23,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:08:23,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:08:23,689 INFO L87 Difference]: Start difference. First operand 870 states and 3463 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:24,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:08:24,123 INFO L93 Difference]: Finished difference Result 1196 states and 4434 transitions. [2021-10-06 21:08:24,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:08:24,124 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:08:24,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:08:24,127 INFO L225 Difference]: With dead ends: 1196 [2021-10-06 21:08:24,127 INFO L226 Difference]: Without dead ends: 1196 [2021-10-06 21:08:24,127 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 357.8ms TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:08:24,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2021-10-06 21:08:24,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 870. [2021-10-06 21:08:24,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 3.9873417721518987) internal successors, (3465), 869 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:24,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 3465 transitions. [2021-10-06 21:08:24,143 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 3465 transitions. Word has length 24 [2021-10-06 21:08:24,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:08:24,144 INFO L470 AbstractCegarLoop]: Abstraction has 870 states and 3465 transitions. [2021-10-06 21:08:24,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:24,144 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 3465 transitions. [2021-10-06 21:08:24,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:08:24,145 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:08:24,146 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:08:24,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (137)] Forceful destruction successful, exit code 0 [2021-10-06 21:08:24,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:08:24,349 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:08:24,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:08:24,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1812779002, now seen corresponding path program 56 times [2021-10-06 21:08:24,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:08:24,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1952029353] [2021-10-06 21:08:24,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:08:24,351 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:08:24,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:08:24,352 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:08:24,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (138)] Waiting until timeout for monitored process [2021-10-06 21:08:26,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:08:26,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:08:26,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:08:26,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:08:27,408 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:08:27,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:08:27,669 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:08:27,669 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:08:27,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1952029353] [2021-10-06 21:08:27,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1952029353] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:08:27,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:08:27,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:08:27,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373962819] [2021-10-06 21:08:27,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:08:27,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:08:27,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:08:27,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:08:27,671 INFO L87 Difference]: Start difference. First operand 870 states and 3465 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:28,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:08:28,135 INFO L93 Difference]: Finished difference Result 1186 states and 4412 transitions. [2021-10-06 21:08:28,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:08:28,136 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:08:28,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:08:28,139 INFO L225 Difference]: With dead ends: 1186 [2021-10-06 21:08:28,139 INFO L226 Difference]: Without dead ends: 1186 [2021-10-06 21:08:28,139 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 384.6ms TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:08:28,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2021-10-06 21:08:28,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 854. [2021-10-06 21:08:28,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 3.963657678780774) internal successors, (3381), 853 states have internal predecessors, (3381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:28,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 3381 transitions. [2021-10-06 21:08:28,198 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 3381 transitions. Word has length 24 [2021-10-06 21:08:28,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:08:28,198 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 3381 transitions. [2021-10-06 21:08:28,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:28,198 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 3381 transitions. [2021-10-06 21:08:28,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:08:28,200 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:08:28,200 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:08:28,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (138)] Ended with exit code 0 [2021-10-06 21:08:28,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:08:28,401 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:08:28,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:08:28,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1212276886, now seen corresponding path program 50 times [2021-10-06 21:08:28,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:08:28,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535924213] [2021-10-06 21:08:28,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:08:28,404 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:08:28,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:08:28,405 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:08:28,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (139)] Waiting until timeout for monitored process [2021-10-06 21:08:30,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:08:30,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:08:30,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:08:30,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:08:31,430 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:08:31,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:08:31,711 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:08:31,712 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:08:31,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535924213] [2021-10-06 21:08:31,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535924213] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:08:31,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:08:31,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:08:31,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927377105] [2021-10-06 21:08:31,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:08:31,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:08:31,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:08:31,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:08:31,714 INFO L87 Difference]: Start difference. First operand 854 states and 3381 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:32,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:08:32,146 INFO L93 Difference]: Finished difference Result 1440 states and 5280 transitions. [2021-10-06 21:08:32,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:08:32,147 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:08:32,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:08:32,151 INFO L225 Difference]: With dead ends: 1440 [2021-10-06 21:08:32,151 INFO L226 Difference]: Without dead ends: 1440 [2021-10-06 21:08:32,151 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 356.0ms TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:08:32,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2021-10-06 21:08:32,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 862. [2021-10-06 21:08:32,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 861 states have (on average 3.9802555168408826) internal successors, (3427), 861 states have internal predecessors, (3427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:32,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 3427 transitions. [2021-10-06 21:08:32,168 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 3427 transitions. Word has length 24 [2021-10-06 21:08:32,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:08:32,168 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 3427 transitions. [2021-10-06 21:08:32,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:32,168 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 3427 transitions. [2021-10-06 21:08:32,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:08:32,170 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:08:32,170 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:08:32,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (139)] Forceful destruction successful, exit code 0 [2021-10-06 21:08:32,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:08:32,371 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:08:32,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:08:32,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1888069068, now seen corresponding path program 51 times [2021-10-06 21:08:32,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:08:32,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198784242] [2021-10-06 21:08:32,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:08:32,373 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:08:32,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:08:32,374 INFO L229 MonitoredProcess]: Starting monitored process 140 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:08:32,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (140)] Waiting until timeout for monitored process [2021-10-06 21:08:34,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:08:34,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:08:34,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:08:34,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:08:35,407 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:08:35,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:08:35,648 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:08:35,648 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:08:35,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [198784242] [2021-10-06 21:08:35,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [198784242] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:08:35,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:08:35,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:08:35,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033140433] [2021-10-06 21:08:35,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:08:35,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:08:35,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:08:35,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:08:35,650 INFO L87 Difference]: Start difference. First operand 862 states and 3427 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:36,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:08:36,118 INFO L93 Difference]: Finished difference Result 1420 states and 5234 transitions. [2021-10-06 21:08:36,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:08:36,119 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:08:36,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:08:36,122 INFO L225 Difference]: With dead ends: 1420 [2021-10-06 21:08:36,123 INFO L226 Difference]: Without dead ends: 1420 [2021-10-06 21:08:36,123 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 394.7ms TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:08:36,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2021-10-06 21:08:36,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 852. [2021-10-06 21:08:36,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 851 states have (on average 3.9576968272620445) internal successors, (3368), 851 states have internal predecessors, (3368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:36,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 3368 transitions. [2021-10-06 21:08:36,144 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 3368 transitions. Word has length 24 [2021-10-06 21:08:36,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:08:36,144 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 3368 transitions. [2021-10-06 21:08:36,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:36,145 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 3368 transitions. [2021-10-06 21:08:36,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:08:36,147 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:08:36,147 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:08:36,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (140)] Forceful destruction successful, exit code 0 [2021-10-06 21:08:36,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:08:36,362 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:08:36,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:08:36,362 INFO L82 PathProgramCache]: Analyzing trace with hash 236057240, now seen corresponding path program 57 times [2021-10-06 21:08:36,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:08:36,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517513837] [2021-10-06 21:08:36,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:08:36,364 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:08:36,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:08:36,365 INFO L229 MonitoredProcess]: Starting monitored process 141 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:08:36,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (141)] Waiting until timeout for monitored process [2021-10-06 21:08:38,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:08:38,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:08:39,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:08:39,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:08:39,310 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:08:39,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:08:39,496 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:08:39,497 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:08:39,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517513837] [2021-10-06 21:08:39,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [517513837] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:08:39,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:08:39,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-10-06 21:08:39,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910985211] [2021-10-06 21:08:39,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:08:39,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:08:39,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:08:39,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:08:39,499 INFO L87 Difference]: Start difference. First operand 852 states and 3368 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:40,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:08:40,027 INFO L93 Difference]: Finished difference Result 1130 states and 4224 transitions. [2021-10-06 21:08:40,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:08:40,027 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:08:40,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:08:40,030 INFO L225 Difference]: With dead ends: 1130 [2021-10-06 21:08:40,030 INFO L226 Difference]: Without dead ends: 1122 [2021-10-06 21:08:40,030 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 473.8ms TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:08:40,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2021-10-06 21:08:40,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 856. [2021-10-06 21:08:40,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 855 states have (on average 3.952046783625731) internal successors, (3379), 855 states have internal predecessors, (3379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:40,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 3379 transitions. [2021-10-06 21:08:40,049 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 3379 transitions. Word has length 24 [2021-10-06 21:08:40,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:08:40,049 INFO L470 AbstractCegarLoop]: Abstraction has 856 states and 3379 transitions. [2021-10-06 21:08:40,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:40,049 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 3379 transitions. [2021-10-06 21:08:40,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:08:40,051 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:08:40,051 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:08:40,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (141)] Ended with exit code 0 [2021-10-06 21:08:40,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:08:40,252 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:08:40,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:08:40,253 INFO L82 PathProgramCache]: Analyzing trace with hash 446923916, now seen corresponding path program 52 times [2021-10-06 21:08:40,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:08:40,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [452298518] [2021-10-06 21:08:40,254 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:08:40,254 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:08:40,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:08:40,256 INFO L229 MonitoredProcess]: Starting monitored process 142 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:08:40,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (142)] Waiting until timeout for monitored process [2021-10-06 21:08:42,624 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:08:42,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:08:42,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:08:42,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:08:42,957 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:08:42,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:08:43,184 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:08:43,184 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:08:43,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [452298518] [2021-10-06 21:08:43,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [452298518] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:08:43,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:08:43,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:08:43,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520330511] [2021-10-06 21:08:43,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:08:43,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:08:43,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:08:43,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:08:43,186 INFO L87 Difference]: Start difference. First operand 856 states and 3379 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:44,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:08:44,059 INFO L93 Difference]: Finished difference Result 1434 states and 5216 transitions. [2021-10-06 21:08:44,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:08:44,060 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:08:44,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:08:44,063 INFO L225 Difference]: With dead ends: 1434 [2021-10-06 21:08:44,063 INFO L226 Difference]: Without dead ends: 1428 [2021-10-06 21:08:44,063 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 703.7ms TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:08:44,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2021-10-06 21:08:44,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 876. [2021-10-06 21:08:44,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 875 states have (on average 3.9565714285714284) internal successors, (3462), 875 states have internal predecessors, (3462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:44,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 3462 transitions. [2021-10-06 21:08:44,081 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 3462 transitions. Word has length 24 [2021-10-06 21:08:44,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:08:44,081 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 3462 transitions. [2021-10-06 21:08:44,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:44,081 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 3462 transitions. [2021-10-06 21:08:44,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:08:44,083 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:08:44,083 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:08:44,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (142)] Forceful destruction successful, exit code 0 [2021-10-06 21:08:44,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:08:44,284 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:08:44,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:08:44,285 INFO L82 PathProgramCache]: Analyzing trace with hash 977009338, now seen corresponding path program 58 times [2021-10-06 21:08:44,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:08:44,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480814700] [2021-10-06 21:08:44,286 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:08:44,286 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:08:44,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:08:44,288 INFO L229 MonitoredProcess]: Starting monitored process 143 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:08:44,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (143)] Waiting until timeout for monitored process [2021-10-06 21:08:46,694 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:08:46,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:08:46,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:08:46,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:08:47,039 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:08:47,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:08:47,262 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:08:47,263 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:08:47,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480814700] [2021-10-06 21:08:47,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480814700] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:08:47,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:08:47,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:08:47,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675759772] [2021-10-06 21:08:47,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:08:47,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:08:47,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:08:47,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:08:47,265 INFO L87 Difference]: Start difference. First operand 876 states and 3462 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:48,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:08:48,132 INFO L93 Difference]: Finished difference Result 1138 states and 4262 transitions. [2021-10-06 21:08:48,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 21:08:48,133 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:08:48,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:08:48,135 INFO L225 Difference]: With dead ends: 1138 [2021-10-06 21:08:48,135 INFO L226 Difference]: Without dead ends: 1134 [2021-10-06 21:08:48,136 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 802.3ms TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:08:48,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2021-10-06 21:08:48,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 884. [2021-10-06 21:08:48,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 883 states have (on average 3.9592298980747453) internal successors, (3496), 883 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:48,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 3496 transitions. [2021-10-06 21:08:48,152 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 3496 transitions. Word has length 24 [2021-10-06 21:08:48,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:08:48,152 INFO L470 AbstractCegarLoop]: Abstraction has 884 states and 3496 transitions. [2021-10-06 21:08:48,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:48,152 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 3496 transitions. [2021-10-06 21:08:48,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:08:48,154 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:08:48,154 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:08:48,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (143)] Forceful destruction successful, exit code 0 [2021-10-06 21:08:48,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:08:48,370 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:08:48,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:08:48,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1822241590, now seen corresponding path program 59 times [2021-10-06 21:08:48,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:08:48,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537315122] [2021-10-06 21:08:48,371 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:08:48,372 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:08:48,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:08:48,373 INFO L229 MonitoredProcess]: Starting monitored process 144 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:08:48,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (144)] Waiting until timeout for monitored process [2021-10-06 21:08:50,890 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:08:50,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:08:50,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:08:50,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:08:51,266 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:08:51,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:08:51,494 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:08:51,495 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:08:51,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537315122] [2021-10-06 21:08:51,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1537315122] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:08:51,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:08:51,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:08:51,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354844126] [2021-10-06 21:08:51,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:08:51,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:08:51,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:08:51,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:08:51,497 INFO L87 Difference]: Start difference. First operand 884 states and 3496 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:51,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:08:51,907 INFO L93 Difference]: Finished difference Result 1114 states and 4209 transitions. [2021-10-06 21:08:51,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:08:51,908 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:08:51,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:08:51,911 INFO L225 Difference]: With dead ends: 1114 [2021-10-06 21:08:51,911 INFO L226 Difference]: Without dead ends: 1114 [2021-10-06 21:08:51,911 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 341.4ms TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:08:51,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2021-10-06 21:08:51,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 876. [2021-10-06 21:08:51,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 875 states have (on average 3.952) internal successors, (3458), 875 states have internal predecessors, (3458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:51,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 3458 transitions. [2021-10-06 21:08:51,928 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 3458 transitions. Word has length 24 [2021-10-06 21:08:51,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:08:51,928 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 3458 transitions. [2021-10-06 21:08:51,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:51,928 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 3458 transitions. [2021-10-06 21:08:51,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:08:51,930 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:08:51,930 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:08:51,948 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (144)] Ended with exit code 0 [2021-10-06 21:08:52,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 144 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:08:52,131 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:08:52,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:08:52,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1715001500, now seen corresponding path program 53 times [2021-10-06 21:08:52,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:08:52,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1738368880] [2021-10-06 21:08:52,133 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:08:52,133 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:08:52,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:08:52,134 INFO L229 MonitoredProcess]: Starting monitored process 145 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:08:52,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (145)] Waiting until timeout for monitored process [2021-10-06 21:08:54,690 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:08:54,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:08:54,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:08:54,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:08:55,031 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:08:55,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:08:55,233 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:08:55,233 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:08:55,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1738368880] [2021-10-06 21:08:55,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1738368880] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:08:55,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:08:55,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:08:55,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430161084] [2021-10-06 21:08:55,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:08:55,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:08:55,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:08:55,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:08:55,235 INFO L87 Difference]: Start difference. First operand 876 states and 3458 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:56,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:08:56,115 INFO L93 Difference]: Finished difference Result 1402 states and 5149 transitions. [2021-10-06 21:08:56,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:08:56,116 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:08:56,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:08:56,120 INFO L225 Difference]: With dead ends: 1402 [2021-10-06 21:08:56,120 INFO L226 Difference]: Without dead ends: 1402 [2021-10-06 21:08:56,121 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 666.1ms TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:08:56,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2021-10-06 21:08:56,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 864. [2021-10-06 21:08:56,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 863 states have (on average 3.950173812282735) internal successors, (3409), 863 states have internal predecessors, (3409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:56,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 3409 transitions. [2021-10-06 21:08:56,138 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 3409 transitions. Word has length 24 [2021-10-06 21:08:56,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:08:56,138 INFO L470 AbstractCegarLoop]: Abstraction has 864 states and 3409 transitions. [2021-10-06 21:08:56,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:56,138 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 3409 transitions. [2021-10-06 21:08:56,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:08:56,140 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:08:56,140 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:08:56,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (145)] Forceful destruction successful, exit code 0 [2021-10-06 21:08:56,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:08:56,341 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:08:56,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:08:56,342 INFO L82 PathProgramCache]: Analyzing trace with hash 41053260, now seen corresponding path program 54 times [2021-10-06 21:08:56,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:08:56,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784824159] [2021-10-06 21:08:56,343 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:08:56,343 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:08:56,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:08:56,344 INFO L229 MonitoredProcess]: Starting monitored process 146 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:08:56,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (146)] Waiting until timeout for monitored process [2021-10-06 21:08:59,124 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:08:59,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:08:59,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:08:59,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:08:59,437 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:08:59,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:08:59,608 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:08:59,609 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:08:59,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784824159] [2021-10-06 21:08:59,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1784824159] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:08:59,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:08:59,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-10-06 21:08:59,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338567976] [2021-10-06 21:08:59,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:08:59,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:08:59,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:08:59,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:08:59,610 INFO L87 Difference]: Start difference. First operand 864 states and 3409 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:59,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:08:59,965 INFO L93 Difference]: Finished difference Result 1472 states and 5377 transitions. [2021-10-06 21:08:59,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:08:59,965 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:08:59,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:08:59,980 INFO L225 Difference]: With dead ends: 1472 [2021-10-06 21:08:59,980 INFO L226 Difference]: Without dead ends: 1472 [2021-10-06 21:08:59,980 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 257.6ms TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:08:59,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2021-10-06 21:08:59,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 860. [2021-10-06 21:08:59,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 859 states have (on average 3.9557625145518043) internal successors, (3398), 859 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:59,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 3398 transitions. [2021-10-06 21:08:59,998 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 3398 transitions. Word has length 24 [2021-10-06 21:08:59,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:08:59,998 INFO L470 AbstractCegarLoop]: Abstraction has 860 states and 3398 transitions. [2021-10-06 21:08:59,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:59,998 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 3398 transitions. [2021-10-06 21:09:00,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:09:00,001 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:09:00,001 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:09:00,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (146)] Forceful destruction successful, exit code 0 [2021-10-06 21:09:00,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 146 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:09:00,215 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:09:00,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:09:00,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1685813122, now seen corresponding path program 55 times [2021-10-06 21:09:00,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:09:00,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240709546] [2021-10-06 21:09:00,217 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:09:00,217 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:09:00,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:09:00,218 INFO L229 MonitoredProcess]: Starting monitored process 147 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:09:00,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (147)] Waiting until timeout for monitored process [2021-10-06 21:09:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:09:02,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:09:02,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:09:03,079 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:09:03,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:09:03,297 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:09:03,297 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:09:03,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [240709546] [2021-10-06 21:09:03,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [240709546] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:09:03,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:09:03,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:09:03,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604385612] [2021-10-06 21:09:03,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:09:03,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:09:03,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:09:03,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:09:03,299 INFO L87 Difference]: Start difference. First operand 860 states and 3398 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:03,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:09:03,683 INFO L93 Difference]: Finished difference Result 1270 states and 4743 transitions. [2021-10-06 21:09:03,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:09:03,684 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:09:03,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:09:03,691 INFO L225 Difference]: With dead ends: 1270 [2021-10-06 21:09:03,691 INFO L226 Difference]: Without dead ends: 1270 [2021-10-06 21:09:03,691 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 294.0ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:09:03,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2021-10-06 21:09:03,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 864. [2021-10-06 21:09:03,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 863 states have (on average 3.958285052143685) internal successors, (3416), 863 states have internal predecessors, (3416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:03,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 3416 transitions. [2021-10-06 21:09:03,708 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 3416 transitions. Word has length 24 [2021-10-06 21:09:03,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:09:03,709 INFO L470 AbstractCegarLoop]: Abstraction has 864 states and 3416 transitions. [2021-10-06 21:09:03,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:03,709 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 3416 transitions. [2021-10-06 21:09:03,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:09:03,710 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:09:03,710 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:09:03,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (147)] Ended with exit code 0 [2021-10-06 21:09:03,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:09:03,911 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:09:03,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:09:03,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1119749178, now seen corresponding path program 56 times [2021-10-06 21:09:03,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:09:03,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680647924] [2021-10-06 21:09:03,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:09:03,914 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:09:03,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:09:03,914 INFO L229 MonitoredProcess]: Starting monitored process 148 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:09:03,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (148)] Waiting until timeout for monitored process [2021-10-06 21:09:06,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:09:06,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:09:06,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:09:06,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:09:07,095 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:09:07,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:09:07,328 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:09:07,328 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:09:07,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680647924] [2021-10-06 21:09:07,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1680647924] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:09:07,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:09:07,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:09:07,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761528193] [2021-10-06 21:09:07,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:09:07,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:09:07,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:09:07,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:09:07,330 INFO L87 Difference]: Start difference. First operand 864 states and 3416 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:07,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:09:07,761 INFO L93 Difference]: Finished difference Result 1292 states and 4809 transitions. [2021-10-06 21:09:07,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:09:07,762 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:09:07,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:09:07,765 INFO L225 Difference]: With dead ends: 1292 [2021-10-06 21:09:07,765 INFO L226 Difference]: Without dead ends: 1292 [2021-10-06 21:09:07,765 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 338.5ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:09:07,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-10-06 21:09:07,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 856. [2021-10-06 21:09:07,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 855 states have (on average 3.9415204678362574) internal successors, (3370), 855 states have internal predecessors, (3370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:07,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 3370 transitions. [2021-10-06 21:09:07,781 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 3370 transitions. Word has length 24 [2021-10-06 21:09:07,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:09:07,782 INFO L470 AbstractCegarLoop]: Abstraction has 856 states and 3370 transitions. [2021-10-06 21:09:07,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:07,782 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 3370 transitions. [2021-10-06 21:09:07,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:09:07,796 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:09:07,796 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:09:07,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (148)] Ended with exit code 0 [2021-10-06 21:09:07,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 148 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:09:07,996 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:09:07,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:09:07,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1056730554, now seen corresponding path program 57 times [2021-10-06 21:09:07,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:09:07,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203844865] [2021-10-06 21:09:07,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:09:07,999 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:09:07,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:09:08,001 INFO L229 MonitoredProcess]: Starting monitored process 149 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:09:08,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (149)] Waiting until timeout for monitored process [2021-10-06 21:09:10,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:09:10,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:09:10,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:09:10,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:09:10,939 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:09:10,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:09:11,129 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:09:11,130 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:09:11,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203844865] [2021-10-06 21:09:11,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203844865] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:09:11,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:09:11,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-10-06 21:09:11,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507710264] [2021-10-06 21:09:11,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:09:11,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:09:11,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:09:11,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:09:11,131 INFO L87 Difference]: Start difference. First operand 856 states and 3370 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:11,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:09:11,528 INFO L93 Difference]: Finished difference Result 1326 states and 4887 transitions. [2021-10-06 21:09:11,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:09:11,528 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:09:11,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:09:11,531 INFO L225 Difference]: With dead ends: 1326 [2021-10-06 21:09:11,532 INFO L226 Difference]: Without dead ends: 1326 [2021-10-06 21:09:11,532 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 265.6ms TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:09:11,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2021-10-06 21:09:11,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 840. [2021-10-06 21:09:11,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 839 states have (on average 3.935637663885578) internal successors, (3302), 839 states have internal predecessors, (3302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:11,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 3302 transitions. [2021-10-06 21:09:11,548 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 3302 transitions. Word has length 24 [2021-10-06 21:09:11,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:09:11,548 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 3302 transitions. [2021-10-06 21:09:11,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:11,549 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 3302 transitions. [2021-10-06 21:09:11,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:09:11,550 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:09:11,550 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:09:11,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (149)] Ended with exit code 0 [2021-10-06 21:09:11,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 149 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:09:11,751 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:09:11,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:09:11,752 INFO L82 PathProgramCache]: Analyzing trace with hash -561061878, now seen corresponding path program 60 times [2021-10-06 21:09:11,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:09:11,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776788352] [2021-10-06 21:09:11,753 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:09:11,753 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:09:11,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:09:11,754 INFO L229 MonitoredProcess]: Starting monitored process 150 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:09:11,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (150)] Waiting until timeout for monitored process [2021-10-06 21:09:14,604 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:09:14,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:09:14,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:09:14,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:09:14,768 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:09:14,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:09:14,884 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:09:14,885 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:09:14,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776788352] [2021-10-06 21:09:14,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776788352] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:09:14,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:09:14,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2021-10-06 21:09:14,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352870881] [2021-10-06 21:09:14,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:09:14,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:09:14,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:09:14,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:09:14,886 INFO L87 Difference]: Start difference. First operand 840 states and 3302 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:15,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:09:15,187 INFO L93 Difference]: Finished difference Result 1004 states and 3749 transitions. [2021-10-06 21:09:15,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:09:15,187 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:09:15,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:09:15,189 INFO L225 Difference]: With dead ends: 1004 [2021-10-06 21:09:15,190 INFO L226 Difference]: Without dead ends: 1004 [2021-10-06 21:09:15,190 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 137.5ms TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:09:15,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2021-10-06 21:09:15,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 842. [2021-10-06 21:09:15,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 841 states have (on average 3.9322235434007133) internal successors, (3307), 841 states have internal predecessors, (3307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:15,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 3307 transitions. [2021-10-06 21:09:15,204 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 3307 transitions. Word has length 24 [2021-10-06 21:09:15,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:09:15,205 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 3307 transitions. [2021-10-06 21:09:15,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:15,205 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 3307 transitions. [2021-10-06 21:09:15,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:09:15,206 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:09:15,206 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:09:15,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (150)] Forceful destruction successful, exit code 0 [2021-10-06 21:09:15,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:09:15,407 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:09:15,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:09:15,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1615176822, now seen corresponding path program 61 times [2021-10-06 21:09:15,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:09:15,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [677539782] [2021-10-06 21:09:15,409 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:09:15,409 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:09:15,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:09:15,410 INFO L229 MonitoredProcess]: Starting monitored process 151 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:09:15,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (151)] Waiting until timeout for monitored process [2021-10-06 21:09:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:09:18,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:09:18,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:09:18,238 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:09:18,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:09:18,388 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:09:18,389 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:09:18,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [677539782] [2021-10-06 21:09:18,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [677539782] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:09:18,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:09:18,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-10-06 21:09:18,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847092385] [2021-10-06 21:09:18,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:09:18,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:09:18,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:09:18,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:09:18,391 INFO L87 Difference]: Start difference. First operand 842 states and 3307 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:19,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:09:19,087 INFO L93 Difference]: Finished difference Result 1038 states and 3817 transitions. [2021-10-06 21:09:19,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:09:19,088 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:09:19,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:09:19,090 INFO L225 Difference]: With dead ends: 1038 [2021-10-06 21:09:19,091 INFO L226 Difference]: Without dead ends: 1034 [2021-10-06 21:09:19,091 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 455.5ms TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:09:19,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2021-10-06 21:09:19,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 848. [2021-10-06 21:09:19,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 847 states have (on average 3.9315230224321134) internal successors, (3330), 847 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:19,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 3330 transitions. [2021-10-06 21:09:19,111 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 3330 transitions. Word has length 24 [2021-10-06 21:09:19,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:09:19,111 INFO L470 AbstractCegarLoop]: Abstraction has 848 states and 3330 transitions. [2021-10-06 21:09:19,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:19,111 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 3330 transitions. [2021-10-06 21:09:19,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:09:19,113 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:09:19,113 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:09:19,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (151)] Ended with exit code 0 [2021-10-06 21:09:19,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:09:19,314 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:09:19,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:09:19,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1169379270, now seen corresponding path program 62 times [2021-10-06 21:09:19,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:09:19,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315576811] [2021-10-06 21:09:19,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:09:19,316 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:09:19,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:09:19,318 INFO L229 MonitoredProcess]: Starting monitored process 152 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:09:19,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (152)] Waiting until timeout for monitored process [2021-10-06 21:09:22,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:09:22,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:09:22,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:09:22,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:09:22,295 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:09:22,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:09:22,447 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:09:22,448 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:09:22,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [315576811] [2021-10-06 21:09:22,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [315576811] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:09:22,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:09:22,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-10-06 21:09:22,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517219513] [2021-10-06 21:09:22,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:09:22,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:09:22,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:09:22,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:09:22,449 INFO L87 Difference]: Start difference. First operand 848 states and 3330 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:22,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:09:22,744 INFO L93 Difference]: Finished difference Result 1020 states and 3791 transitions. [2021-10-06 21:09:22,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:09:22,745 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:09:22,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:09:22,747 INFO L225 Difference]: With dead ends: 1020 [2021-10-06 21:09:22,748 INFO L226 Difference]: Without dead ends: 1020 [2021-10-06 21:09:22,748 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 199.1ms TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:09:22,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2021-10-06 21:09:22,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 840. [2021-10-06 21:09:22,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 839 states have (on average 3.935637663885578) internal successors, (3302), 839 states have internal predecessors, (3302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:22,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 3302 transitions. [2021-10-06 21:09:22,763 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 3302 transitions. Word has length 24 [2021-10-06 21:09:22,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:09:22,763 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 3302 transitions. [2021-10-06 21:09:22,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:22,763 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 3302 transitions. [2021-10-06 21:09:22,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:09:22,765 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:09:22,765 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:09:22,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (152)] Forceful destruction successful, exit code 0 [2021-10-06 21:09:22,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:09:22,979 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:09:22,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:09:22,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1042218018, now seen corresponding path program 63 times [2021-10-06 21:09:22,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:09:22,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [564103071] [2021-10-06 21:09:22,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:09:22,980 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:09:22,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:09:22,982 INFO L229 MonitoredProcess]: Starting monitored process 153 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:09:22,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (153)] Waiting until timeout for monitored process [2021-10-06 21:09:25,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:09:25,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:09:25,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:09:25,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:09:26,020 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:09:26,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:09:26,170 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:09:26,171 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:09:26,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [564103071] [2021-10-06 21:09:26,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [564103071] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:09:26,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:09:26,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-10-06 21:09:26,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136769803] [2021-10-06 21:09:26,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:09:26,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:09:26,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:09:26,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:09:26,172 INFO L87 Difference]: Start difference. First operand 840 states and 3302 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:26,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:09:26,802 INFO L93 Difference]: Finished difference Result 1020 states and 3724 transitions. [2021-10-06 21:09:26,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 21:09:26,802 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:09:26,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:09:26,804 INFO L225 Difference]: With dead ends: 1020 [2021-10-06 21:09:26,805 INFO L226 Difference]: Without dead ends: 1016 [2021-10-06 21:09:26,805 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 480.5ms TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:09:26,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2021-10-06 21:09:26,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 848. [2021-10-06 21:09:26,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 847 states have (on average 3.9338842975206614) internal successors, (3332), 847 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:26,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 3332 transitions. [2021-10-06 21:09:26,820 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 3332 transitions. Word has length 24 [2021-10-06 21:09:26,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:09:26,820 INFO L470 AbstractCegarLoop]: Abstraction has 848 states and 3332 transitions. [2021-10-06 21:09:26,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:26,820 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 3332 transitions. [2021-10-06 21:09:26,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:09:26,821 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:09:26,821 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:09:26,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (153)] Forceful destruction successful, exit code 0 [2021-10-06 21:09:27,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:09:27,022 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:09:27,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:09:27,023 INFO L82 PathProgramCache]: Analyzing trace with hash -468193186, now seen corresponding path program 64 times [2021-10-06 21:09:27,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:09:27,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71588306] [2021-10-06 21:09:27,024 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:09:27,024 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:09:27,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:09:27,025 INFO L229 MonitoredProcess]: Starting monitored process 154 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:09:27,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (154)] Waiting until timeout for monitored process [2021-10-06 21:09:29,551 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:09:29,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:09:29,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:09:29,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:09:29,769 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:09:29,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:09:30,004 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:09:30,005 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:09:30,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71588306] [2021-10-06 21:09:30,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71588306] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:09:30,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:09:30,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-10-06 21:09:30,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890396393] [2021-10-06 21:09:30,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:09:30,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:09:30,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:09:30,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:09:30,007 INFO L87 Difference]: Start difference. First operand 848 states and 3332 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:30,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:09:30,312 INFO L93 Difference]: Finished difference Result 996 states and 3683 transitions. [2021-10-06 21:09:30,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:09:30,313 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:09:30,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:09:30,315 INFO L225 Difference]: With dead ends: 996 [2021-10-06 21:09:30,315 INFO L226 Difference]: Without dead ends: 996 [2021-10-06 21:09:30,315 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 276.5ms TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:09:30,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2021-10-06 21:09:30,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 842. [2021-10-06 21:09:30,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 841 states have (on average 3.934601664684899) internal successors, (3309), 841 states have internal predecessors, (3309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:30,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 3309 transitions. [2021-10-06 21:09:30,330 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 3309 transitions. Word has length 24 [2021-10-06 21:09:30,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:09:30,330 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 3309 transitions. [2021-10-06 21:09:30,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:30,331 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 3309 transitions. [2021-10-06 21:09:30,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:09:30,332 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:09:30,332 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:09:30,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (154)] Ended with exit code 0 [2021-10-06 21:09:30,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 154 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:09:30,533 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:09:30,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:09:30,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1299171934, now seen corresponding path program 65 times [2021-10-06 21:09:30,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:09:30,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [45868513] [2021-10-06 21:09:30,535 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:09:30,536 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:09:30,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:09:30,537 INFO L229 MonitoredProcess]: Starting monitored process 155 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:09:30,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (155)] Waiting until timeout for monitored process [2021-10-06 21:09:33,274 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:09:33,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:09:33,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:09:33,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:09:33,443 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:09:33,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:09:33,564 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:09:33,564 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:09:33,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [45868513] [2021-10-06 21:09:33,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [45868513] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:09:33,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:09:33,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2021-10-06 21:09:33,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143152935] [2021-10-06 21:09:33,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:09:33,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:09:33,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:09:33,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:09:33,566 INFO L87 Difference]: Start difference. First operand 842 states and 3309 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:34,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:09:34,056 INFO L93 Difference]: Finished difference Result 966 states and 3616 transitions. [2021-10-06 21:09:34,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:09:34,056 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:09:34,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:09:34,058 INFO L225 Difference]: With dead ends: 966 [2021-10-06 21:09:34,058 INFO L226 Difference]: Without dead ends: 958 [2021-10-06 21:09:34,059 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 257.4ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:09:34,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2021-10-06 21:09:34,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 840. [2021-10-06 21:09:34,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 839 states have (on average 3.935637663885578) internal successors, (3302), 839 states have internal predecessors, (3302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:34,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 3302 transitions. [2021-10-06 21:09:34,073 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 3302 transitions. Word has length 24 [2021-10-06 21:09:34,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:09:34,074 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 3302 transitions. [2021-10-06 21:09:34,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:34,074 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 3302 transitions. [2021-10-06 21:09:34,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:09:34,075 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:09:34,075 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:09:34,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (155)] Forceful destruction successful, exit code 0 [2021-10-06 21:09:34,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:09:34,276 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:09:34,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:09:34,277 INFO L82 PathProgramCache]: Analyzing trace with hash 218350846, now seen corresponding path program 58 times [2021-10-06 21:09:34,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:09:34,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521354454] [2021-10-06 21:09:34,278 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:09:34,278 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:09:34,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:09:34,280 INFO L229 MonitoredProcess]: Starting monitored process 156 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:09:34,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (156)] Waiting until timeout for monitored process [2021-10-06 21:09:36,994 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:09:36,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:09:37,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:09:37,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:09:37,251 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:09:37,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:09:37,396 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:09:37,396 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:09:37,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521354454] [2021-10-06 21:09:37,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [521354454] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:09:37,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:09:37,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-10-06 21:09:37,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671749796] [2021-10-06 21:09:37,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:09:37,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:09:37,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:09:37,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:09:37,397 INFO L87 Difference]: Start difference. First operand 840 states and 3302 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:37,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:09:37,731 INFO L93 Difference]: Finished difference Result 1100 states and 4172 transitions. [2021-10-06 21:09:37,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:09:37,732 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:09:37,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:09:37,734 INFO L225 Difference]: With dead ends: 1100 [2021-10-06 21:09:37,734 INFO L226 Difference]: Without dead ends: 1100 [2021-10-06 21:09:37,735 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 238.2ms TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:09:37,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2021-10-06 21:09:37,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 844. [2021-10-06 21:09:37,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 843 states have (on average 3.933570581257414) internal successors, (3316), 843 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:37,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 3316 transitions. [2021-10-06 21:09:37,751 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 3316 transitions. Word has length 24 [2021-10-06 21:09:37,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:09:37,751 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 3316 transitions. [2021-10-06 21:09:37,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:37,751 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 3316 transitions. [2021-10-06 21:09:37,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:09:37,752 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:09:37,753 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:09:37,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (156)] Forceful destruction successful, exit code 0 [2021-10-06 21:09:37,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 156 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:09:37,953 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:09:37,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:09:37,954 INFO L82 PathProgramCache]: Analyzing trace with hash 914503870, now seen corresponding path program 59 times [2021-10-06 21:09:37,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:09:37,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675316666] [2021-10-06 21:09:37,955 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:09:37,956 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:09:37,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:09:37,957 INFO L229 MonitoredProcess]: Starting monitored process 157 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:09:37,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (157)] Waiting until timeout for monitored process [2021-10-06 21:09:40,700 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:09:40,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:09:40,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:09:40,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:09:40,999 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:09:41,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:09:41,167 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:09:41,167 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:09:41,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675316666] [2021-10-06 21:09:41,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675316666] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:09:41,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:09:41,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:09:41,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862775680] [2021-10-06 21:09:41,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:09:41,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:09:41,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:09:41,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:09:41,169 INFO L87 Difference]: Start difference. First operand 844 states and 3316 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:42,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:09:42,113 INFO L93 Difference]: Finished difference Result 1152 states and 4265 transitions. [2021-10-06 21:09:42,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:09:42,114 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:09:42,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:09:42,117 INFO L225 Difference]: With dead ends: 1152 [2021-10-06 21:09:42,117 INFO L226 Difference]: Without dead ends: 1146 [2021-10-06 21:09:42,117 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 723.2ms TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:09:42,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2021-10-06 21:09:42,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 850. [2021-10-06 21:09:42,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 849 states have (on average 3.932862190812721) internal successors, (3339), 849 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:42,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 3339 transitions. [2021-10-06 21:09:42,134 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 3339 transitions. Word has length 24 [2021-10-06 21:09:42,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:09:42,134 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 3339 transitions. [2021-10-06 21:09:42,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:42,134 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 3339 transitions. [2021-10-06 21:09:42,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:09:42,136 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:09:42,136 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:09:42,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (157)] Ended with exit code 0 [2021-10-06 21:09:42,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 157 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:09:42,337 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:09:42,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:09:42,338 INFO L82 PathProgramCache]: Analyzing trace with hash -919038664, now seen corresponding path program 60 times [2021-10-06 21:09:42,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:09:42,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405298972] [2021-10-06 21:09:42,339 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:09:42,339 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:09:42,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:09:42,340 INFO L229 MonitoredProcess]: Starting monitored process 158 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:09:42,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (158)] Waiting until timeout for monitored process [2021-10-06 21:09:45,499 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:09:45,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:09:45,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:09:45,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:09:45,828 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:09:45,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:09:46,022 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:09:46,023 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:09:46,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405298972] [2021-10-06 21:09:46,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405298972] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:09:46,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:09:46,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:09:46,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512027954] [2021-10-06 21:09:46,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:09:46,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:09:46,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:09:46,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:09:46,025 INFO L87 Difference]: Start difference. First operand 850 states and 3339 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:46,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:09:46,469 INFO L93 Difference]: Finished difference Result 1072 states and 4076 transitions. [2021-10-06 21:09:46,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:09:46,470 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:09:46,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:09:46,473 INFO L225 Difference]: With dead ends: 1072 [2021-10-06 21:09:46,473 INFO L226 Difference]: Without dead ends: 1072 [2021-10-06 21:09:46,473 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 298.5ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:09:46,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2021-10-06 21:09:46,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 846. [2021-10-06 21:09:46,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 845 states have (on average 3.9396449704142014) internal successors, (3329), 845 states have internal predecessors, (3329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:46,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 3329 transitions. [2021-10-06 21:09:46,489 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 3329 transitions. Word has length 24 [2021-10-06 21:09:46,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:09:46,489 INFO L470 AbstractCegarLoop]: Abstraction has 846 states and 3329 transitions. [2021-10-06 21:09:46,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:46,489 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 3329 transitions. [2021-10-06 21:09:46,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:09:46,491 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:09:46,491 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:09:46,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (158)] Forceful destruction successful, exit code 0 [2021-10-06 21:09:46,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 158 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:09:46,692 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:09:46,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:09:46,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1470666836, now seen corresponding path program 66 times [2021-10-06 21:09:46,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:09:46,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1988617031] [2021-10-06 21:09:46,694 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:09:46,694 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:09:46,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:09:46,695 INFO L229 MonitoredProcess]: Starting monitored process 159 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:09:46,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (159)] Waiting until timeout for monitored process [2021-10-06 21:09:49,727 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:09:49,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:09:49,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:09:49,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:09:49,994 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:09:49,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:09:50,151 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:09:50,151 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:09:50,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1988617031] [2021-10-06 21:09:50,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1988617031] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:09:50,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:09:50,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-10-06 21:09:50,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645312511] [2021-10-06 21:09:50,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:09:50,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:09:50,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:09:50,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:09:50,153 INFO L87 Difference]: Start difference. First operand 846 states and 3329 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:50,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:09:50,559 INFO L93 Difference]: Finished difference Result 1236 states and 4546 transitions. [2021-10-06 21:09:50,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:09:50,559 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:09:50,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:09:50,562 INFO L225 Difference]: With dead ends: 1236 [2021-10-06 21:09:50,562 INFO L226 Difference]: Without dead ends: 1236 [2021-10-06 21:09:50,562 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 262.7ms TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:09:50,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2021-10-06 21:09:50,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 850. [2021-10-06 21:09:50,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 849 states have (on average 3.9375736160188457) internal successors, (3343), 849 states have internal predecessors, (3343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:50,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 3343 transitions. [2021-10-06 21:09:50,582 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 3343 transitions. Word has length 24 [2021-10-06 21:09:50,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:09:50,582 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 3343 transitions. [2021-10-06 21:09:50,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:50,582 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 3343 transitions. [2021-10-06 21:09:50,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:09:50,584 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:09:50,584 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:09:50,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (159)] Forceful destruction successful, exit code 0 [2021-10-06 21:09:50,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:09:50,785 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:09:50,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:09:50,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1770185516, now seen corresponding path program 67 times [2021-10-06 21:09:50,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:09:50,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408137155] [2021-10-06 21:09:50,787 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:09:50,787 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:09:50,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:09:50,788 INFO L229 MonitoredProcess]: Starting monitored process 160 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:09:50,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (160)] Waiting until timeout for monitored process [2021-10-06 21:09:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:09:53,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:09:53,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:09:53,782 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:09:53,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:09:53,957 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:09:53,958 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:09:53,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408137155] [2021-10-06 21:09:53,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408137155] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:09:53,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:09:53,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:09:53,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489530893] [2021-10-06 21:09:53,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:09:53,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:09:53,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:09:53,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:09:53,959 INFO L87 Difference]: Start difference. First operand 850 states and 3343 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:54,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:09:54,854 INFO L93 Difference]: Finished difference Result 1216 states and 4455 transitions. [2021-10-06 21:09:54,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:09:54,855 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:09:54,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:09:54,857 INFO L225 Difference]: With dead ends: 1216 [2021-10-06 21:09:54,857 INFO L226 Difference]: Without dead ends: 1212 [2021-10-06 21:09:54,858 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 699.5ms TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:09:54,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2021-10-06 21:09:54,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 856. [2021-10-06 21:09:54,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 855 states have (on average 3.9368421052631577) internal successors, (3366), 855 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:54,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 3366 transitions. [2021-10-06 21:09:54,874 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 3366 transitions. Word has length 24 [2021-10-06 21:09:54,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:09:54,874 INFO L470 AbstractCegarLoop]: Abstraction has 856 states and 3366 transitions. [2021-10-06 21:09:54,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:54,874 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 3366 transitions. [2021-10-06 21:09:54,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:09:54,876 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:09:54,876 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:09:54,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (160)] Forceful destruction successful, exit code 0 [2021-10-06 21:09:55,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 160 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:09:55,077 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:09:55,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:09:55,078 INFO L82 PathProgramCache]: Analyzing trace with hash 259774312, now seen corresponding path program 68 times [2021-10-06 21:09:55,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:09:55,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [734655714] [2021-10-06 21:09:55,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:09:55,079 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:09:55,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:09:55,080 INFO L229 MonitoredProcess]: Starting monitored process 161 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:09:55,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (161)] Waiting until timeout for monitored process [2021-10-06 21:09:57,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:09:57,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:09:57,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:09:57,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:09:58,295 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:09:58,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:09:58,490 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:09:58,491 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:09:58,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [734655714] [2021-10-06 21:09:58,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [734655714] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:09:58,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:09:58,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:09:58,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126608990] [2021-10-06 21:09:58,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:09:58,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:09:58,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:09:58,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:09:58,493 INFO L87 Difference]: Start difference. First operand 856 states and 3366 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:58,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:09:58,945 INFO L93 Difference]: Finished difference Result 1212 states and 4462 transitions. [2021-10-06 21:09:58,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:09:58,946 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:09:58,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:09:58,948 INFO L225 Difference]: With dead ends: 1212 [2021-10-06 21:09:58,949 INFO L226 Difference]: Without dead ends: 1212 [2021-10-06 21:09:58,949 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 338.0ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:09:58,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2021-10-06 21:09:59,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 852. [2021-10-06 21:09:59,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 851 states have (on average 3.943595769682726) internal successors, (3356), 851 states have internal predecessors, (3356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:59,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 3356 transitions. [2021-10-06 21:09:59,067 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 3356 transitions. Word has length 24 [2021-10-06 21:09:59,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:09:59,068 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 3356 transitions. [2021-10-06 21:09:59,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:59,068 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 3356 transitions. [2021-10-06 21:09:59,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:09:59,069 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:09:59,070 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:09:59,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (161)] Forceful destruction successful, exit code 0 [2021-10-06 21:09:59,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 161 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:09:59,285 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:09:59,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:09:59,286 INFO L82 PathProgramCache]: Analyzing trace with hash -951291608, now seen corresponding path program 69 times [2021-10-06 21:09:59,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:09:59,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1820365252] [2021-10-06 21:09:59,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:09:59,287 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:09:59,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:09:59,288 INFO L229 MonitoredProcess]: Starting monitored process 162 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:09:59,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (162)] Waiting until timeout for monitored process [2021-10-06 21:10:02,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:10:02,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:10:02,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:10:02,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:10:02,517 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:10:02,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:10:02,696 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:10:02,696 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:10:02,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1820365252] [2021-10-06 21:10:02,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1820365252] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:10:02,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:10:02,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-10-06 21:10:02,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507546408] [2021-10-06 21:10:02,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:10:02,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:10:02,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:10:02,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:10:02,698 INFO L87 Difference]: Start difference. First operand 852 states and 3356 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:03,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:10:03,115 INFO L93 Difference]: Finished difference Result 1170 states and 4352 transitions. [2021-10-06 21:10:03,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:10:03,116 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:10:03,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:10:03,118 INFO L225 Difference]: With dead ends: 1170 [2021-10-06 21:10:03,118 INFO L226 Difference]: Without dead ends: 1170 [2021-10-06 21:10:03,119 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 271.9ms TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:10:03,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2021-10-06 21:10:03,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 844. [2021-10-06 21:10:03,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 843 states have (on average 3.9430604982206408) internal successors, (3324), 843 states have internal predecessors, (3324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:03,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 3324 transitions. [2021-10-06 21:10:03,135 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 3324 transitions. Word has length 24 [2021-10-06 21:10:03,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:10:03,135 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 3324 transitions. [2021-10-06 21:10:03,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:03,135 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 3324 transitions. [2021-10-06 21:10:03,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:10:03,137 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:10:03,137 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:10:03,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (162)] Forceful destruction successful, exit code 0 [2021-10-06 21:10:03,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 162 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:10:03,338 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:10:03,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:10:03,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1554791586, now seen corresponding path program 70 times [2021-10-06 21:10:03,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:10:03,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [350506110] [2021-10-06 21:10:03,340 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:10:03,340 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:10:03,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:10:03,341 INFO L229 MonitoredProcess]: Starting monitored process 163 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:10:03,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (163)] Waiting until timeout for monitored process [2021-10-06 21:10:05,951 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:10:05,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:10:05,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:10:05,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:10:06,380 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:10:06,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:10:06,591 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:10:06,591 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:10:06,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [350506110] [2021-10-06 21:10:06,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [350506110] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:10:06,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:10:06,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:10:06,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543604727] [2021-10-06 21:10:06,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:10:06,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:10:06,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:10:06,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:10:06,593 INFO L87 Difference]: Start difference. First operand 844 states and 3324 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:07,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:10:07,038 INFO L93 Difference]: Finished difference Result 1144 states and 4304 transitions. [2021-10-06 21:10:07,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:10:07,039 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:10:07,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:10:07,043 INFO L225 Difference]: With dead ends: 1144 [2021-10-06 21:10:07,043 INFO L226 Difference]: Without dead ends: 1144 [2021-10-06 21:10:07,043 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 351.7ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:10:07,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2021-10-06 21:10:07,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 852. [2021-10-06 21:10:07,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 851 states have (on average 3.9600470035252644) internal successors, (3370), 851 states have internal predecessors, (3370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:07,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 3370 transitions. [2021-10-06 21:10:07,060 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 3370 transitions. Word has length 24 [2021-10-06 21:10:07,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:10:07,060 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 3370 transitions. [2021-10-06 21:10:07,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:07,060 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 3370 transitions. [2021-10-06 21:10:07,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:10:07,062 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:10:07,062 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:10:07,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (163)] Forceful destruction successful, exit code 0 [2021-10-06 21:10:07,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:10:07,263 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:10:07,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:10:07,264 INFO L82 PathProgramCache]: Analyzing trace with hash -810089088, now seen corresponding path program 71 times [2021-10-06 21:10:07,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:10:07,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122572071] [2021-10-06 21:10:07,265 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:10:07,265 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:10:07,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:10:07,266 INFO L229 MonitoredProcess]: Starting monitored process 164 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:10:07,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (164)] Waiting until timeout for monitored process [2021-10-06 21:10:10,104 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:10:10,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:10:10,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:10:10,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:10:10,447 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:10:10,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:10:10,651 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:10:10,651 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:10:10,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122572071] [2021-10-06 21:10:10,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2122572071] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:10:10,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:10:10,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:10:10,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112399139] [2021-10-06 21:10:10,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:10:10,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:10:10,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:10:10,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:10:10,653 INFO L87 Difference]: Start difference. First operand 852 states and 3370 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:11,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:10:11,030 INFO L93 Difference]: Finished difference Result 1116 states and 4228 transitions. [2021-10-06 21:10:11,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:10:11,031 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:10:11,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:10:11,034 INFO L225 Difference]: With dead ends: 1116 [2021-10-06 21:10:11,034 INFO L226 Difference]: Without dead ends: 1116 [2021-10-06 21:10:11,034 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 301.8ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:10:11,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-10-06 21:10:11,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 836. [2021-10-06 21:10:11,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 835 states have (on average 3.9353293413173653) internal successors, (3286), 835 states have internal predecessors, (3286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:11,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 3286 transitions. [2021-10-06 21:10:11,049 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 3286 transitions. Word has length 24 [2021-10-06 21:10:11,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:10:11,050 INFO L470 AbstractCegarLoop]: Abstraction has 836 states and 3286 transitions. [2021-10-06 21:10:11,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:11,050 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 3286 transitions. [2021-10-06 21:10:11,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:10:11,051 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:10:11,051 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:10:11,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (164)] Forceful destruction successful, exit code 0 [2021-10-06 21:10:11,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:10:11,252 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:10:11,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:10:11,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1372197334, now seen corresponding path program 61 times [2021-10-06 21:10:11,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:10:11,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [844191379] [2021-10-06 21:10:11,254 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:10:11,254 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:10:11,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:10:11,255 INFO L229 MonitoredProcess]: Starting monitored process 165 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:10:11,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (165)] Waiting until timeout for monitored process [2021-10-06 21:10:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:10:14,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:10:14,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:10:14,291 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:10:14,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:10:14,443 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:10:14,444 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:10:14,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [844191379] [2021-10-06 21:10:14,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [844191379] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:10:14,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:10:14,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-10-06 21:10:14,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775957430] [2021-10-06 21:10:14,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:10:14,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:10:14,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:10:14,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:10:14,445 INFO L87 Difference]: Start difference. First operand 836 states and 3286 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:14,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:10:14,823 INFO L93 Difference]: Finished difference Result 1260 states and 4757 transitions. [2021-10-06 21:10:14,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:10:14,824 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:10:14,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:10:14,826 INFO L225 Difference]: With dead ends: 1260 [2021-10-06 21:10:14,827 INFO L226 Difference]: Without dead ends: 1260 [2021-10-06 21:10:14,827 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 255.8ms TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:10:14,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2021-10-06 21:10:14,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 844. [2021-10-06 21:10:14,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 843 states have (on average 3.9430604982206408) internal successors, (3324), 843 states have internal predecessors, (3324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:14,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 3324 transitions. [2021-10-06 21:10:14,843 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 3324 transitions. Word has length 24 [2021-10-06 21:10:14,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:10:14,844 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 3324 transitions. [2021-10-06 21:10:14,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:14,844 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 3324 transitions. [2021-10-06 21:10:14,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:10:14,845 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:10:14,845 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:10:14,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (165)] Ended with exit code 0 [2021-10-06 21:10:15,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:10:15,046 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:10:15,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:10:15,047 INFO L82 PathProgramCache]: Analyzing trace with hash 779200460, now seen corresponding path program 62 times [2021-10-06 21:10:15,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:10:15,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122217157] [2021-10-06 21:10:15,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:10:15,048 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:10:15,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:10:15,050 INFO L229 MonitoredProcess]: Starting monitored process 166 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:10:15,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (166)] Waiting until timeout for monitored process [2021-10-06 21:10:17,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:10:17,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:10:17,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:10:17,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:10:18,283 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:10:18,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:10:18,490 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:10:18,490 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:10:18,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1122217157] [2021-10-06 21:10:18,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1122217157] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:10:18,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:10:18,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:10:18,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835208259] [2021-10-06 21:10:18,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:10:18,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:10:18,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:10:18,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:10:18,492 INFO L87 Difference]: Start difference. First operand 844 states and 3324 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:18,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:10:18,899 INFO L93 Difference]: Finished difference Result 1232 states and 4703 transitions. [2021-10-06 21:10:18,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:10:18,900 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:10:18,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:10:18,903 INFO L225 Difference]: With dead ends: 1232 [2021-10-06 21:10:18,903 INFO L226 Difference]: Without dead ends: 1232 [2021-10-06 21:10:18,904 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 332.4ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:10:18,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2021-10-06 21:10:18,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 852. [2021-10-06 21:10:18,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 851 states have (on average 3.9600470035252644) internal successors, (3370), 851 states have internal predecessors, (3370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:18,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 3370 transitions. [2021-10-06 21:10:18,990 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 3370 transitions. Word has length 24 [2021-10-06 21:10:18,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:10:18,990 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 3370 transitions. [2021-10-06 21:10:18,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:18,990 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 3370 transitions. [2021-10-06 21:10:18,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:10:18,992 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:10:18,992 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:10:19,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (166)] Ended with exit code 0 [2021-10-06 21:10:19,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 166 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:10:19,193 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:10:19,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:10:19,194 INFO L82 PathProgramCache]: Analyzing trace with hash -2026361840, now seen corresponding path program 63 times [2021-10-06 21:10:19,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:10:19,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348207195] [2021-10-06 21:10:19,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:10:19,196 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:10:19,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:10:19,197 INFO L229 MonitoredProcess]: Starting monitored process 167 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:10:19,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (167)] Waiting until timeout for monitored process [2021-10-06 21:10:22,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:10:22,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:10:22,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:10:22,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:10:22,492 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:10:22,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:10:22,685 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:10:22,686 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:10:22,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348207195] [2021-10-06 21:10:22,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1348207195] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:10:22,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:10:22,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:10:22,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350126447] [2021-10-06 21:10:22,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:10:22,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:10:22,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:10:22,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:10:22,687 INFO L87 Difference]: Start difference. First operand 852 states and 3370 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:23,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:10:23,165 INFO L93 Difference]: Finished difference Result 1198 states and 4613 transitions. [2021-10-06 21:10:23,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:10:23,166 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:10:23,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:10:23,169 INFO L225 Difference]: With dead ends: 1198 [2021-10-06 21:10:23,169 INFO L226 Difference]: Without dead ends: 1198 [2021-10-06 21:10:23,169 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 306.2ms TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:10:23,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2021-10-06 21:10:23,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 836. [2021-10-06 21:10:23,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 835 states have (on average 3.9353293413173653) internal successors, (3286), 835 states have internal predecessors, (3286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:23,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 3286 transitions. [2021-10-06 21:10:23,187 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 3286 transitions. Word has length 24 [2021-10-06 21:10:23,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:10:23,187 INFO L470 AbstractCegarLoop]: Abstraction has 836 states and 3286 transitions. [2021-10-06 21:10:23,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:23,188 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 3286 transitions. [2021-10-06 21:10:23,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:10:23,189 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:10:23,189 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:10:23,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (167)] Forceful destruction successful, exit code 0 [2021-10-06 21:10:23,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 167 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:10:23,390 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:10:23,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:10:23,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1597323246, now seen corresponding path program 64 times [2021-10-06 21:10:23,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:10:23,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [253646285] [2021-10-06 21:10:23,392 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:10:23,392 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:10:23,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:10:23,393 INFO L229 MonitoredProcess]: Starting monitored process 168 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:10:23,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (168)] Waiting until timeout for monitored process [2021-10-06 21:10:26,225 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:10:26,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:10:26,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:10:26,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:10:26,622 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:10:26,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:10:26,816 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:10:26,817 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:10:26,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [253646285] [2021-10-06 21:10:26,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [253646285] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:10:26,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:10:26,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:10:26,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893459821] [2021-10-06 21:10:26,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:10:26,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:10:26,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:10:26,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:10:26,818 INFO L87 Difference]: Start difference. First operand 836 states and 3286 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:27,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:10:27,993 INFO L93 Difference]: Finished difference Result 1268 states and 4631 transitions. [2021-10-06 21:10:27,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:10:27,994 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:10:27,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:10:27,997 INFO L225 Difference]: With dead ends: 1268 [2021-10-06 21:10:27,997 INFO L226 Difference]: Without dead ends: 1262 [2021-10-06 21:10:27,997 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 877.5ms TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:10:27,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2021-10-06 21:10:28,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 848. [2021-10-06 21:10:28,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 847 states have (on average 3.9527744982290436) internal successors, (3348), 847 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:28,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 3348 transitions. [2021-10-06 21:10:28,015 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 3348 transitions. Word has length 24 [2021-10-06 21:10:28,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:10:28,016 INFO L470 AbstractCegarLoop]: Abstraction has 848 states and 3348 transitions. [2021-10-06 21:10:28,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:28,016 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 3348 transitions. [2021-10-06 21:10:28,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:10:28,017 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:10:28,017 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:10:28,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (168)] Forceful destruction successful, exit code 0 [2021-10-06 21:10:28,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 168 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:10:28,219 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:10:28,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:10:28,219 INFO L82 PathProgramCache]: Analyzing trace with hash 864101516, now seen corresponding path program 65 times [2021-10-06 21:10:28,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:10:28,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075603619] [2021-10-06 21:10:28,220 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:10:28,221 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:10:28,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:10:28,222 INFO L229 MonitoredProcess]: Starting monitored process 169 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:10:28,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (169)] Waiting until timeout for monitored process [2021-10-06 21:10:31,154 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:10:31,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:10:31,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:10:31,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:10:31,563 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:10:31,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:10:31,772 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:10:31,773 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:10:31,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075603619] [2021-10-06 21:10:31,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2075603619] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:10:31,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:10:31,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:10:31,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713347237] [2021-10-06 21:10:31,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:10:31,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:10:31,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:10:31,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:10:31,774 INFO L87 Difference]: Start difference. First operand 848 states and 3348 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:32,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:10:32,198 INFO L93 Difference]: Finished difference Result 1204 states and 4491 transitions. [2021-10-06 21:10:32,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:10:32,199 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:10:32,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:10:32,201 INFO L225 Difference]: With dead ends: 1204 [2021-10-06 21:10:32,201 INFO L226 Difference]: Without dead ends: 1204 [2021-10-06 21:10:32,202 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 380.0ms TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:10:32,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2021-10-06 21:10:32,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 842. [2021-10-06 21:10:32,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 841 states have (on average 3.953626634958383) internal successors, (3325), 841 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:32,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 3325 transitions. [2021-10-06 21:10:32,218 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 3325 transitions. Word has length 24 [2021-10-06 21:10:32,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:10:32,218 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 3325 transitions. [2021-10-06 21:10:32,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:32,218 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 3325 transitions. [2021-10-06 21:10:32,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:10:32,220 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:10:32,220 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:10:32,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (169)] Forceful destruction successful, exit code 0 [2021-10-06 21:10:32,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 169 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:10:32,421 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:10:32,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:10:32,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1627291618, now seen corresponding path program 72 times [2021-10-06 21:10:32,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:10:32,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1261082801] [2021-10-06 21:10:32,423 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:10:32,424 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:10:32,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:10:32,424 INFO L229 MonitoredProcess]: Starting monitored process 170 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:10:32,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (170)] Waiting until timeout for monitored process [2021-10-06 21:10:35,662 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:10:35,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:10:35,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:10:35,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:10:36,077 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:10:36,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:10:36,277 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:10:36,277 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:10:36,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1261082801] [2021-10-06 21:10:36,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1261082801] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:10:36,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:10:36,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:10:36,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621966986] [2021-10-06 21:10:36,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:10:36,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:10:36,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:10:36,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:10:36,279 INFO L87 Difference]: Start difference. First operand 842 states and 3325 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:37,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:10:37,421 INFO L93 Difference]: Finished difference Result 1228 states and 4556 transitions. [2021-10-06 21:10:37,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:10:37,422 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:10:37,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:10:37,425 INFO L225 Difference]: With dead ends: 1228 [2021-10-06 21:10:37,425 INFO L226 Difference]: Without dead ends: 1224 [2021-10-06 21:10:37,425 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1014.8ms TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:10:37,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2021-10-06 21:10:37,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 852. [2021-10-06 21:10:37,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 851 states have (on average 3.9647473560517037) internal successors, (3374), 851 states have internal predecessors, (3374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:37,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 3374 transitions. [2021-10-06 21:10:37,441 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 3374 transitions. Word has length 24 [2021-10-06 21:10:37,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:10:37,442 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 3374 transitions. [2021-10-06 21:10:37,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:37,442 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 3374 transitions. [2021-10-06 21:10:37,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:10:37,443 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:10:37,444 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:10:37,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (170)] Forceful destruction successful, exit code 0 [2021-10-06 21:10:37,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 170 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:10:37,644 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:10:37,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:10:37,645 INFO L82 PathProgramCache]: Analyzing trace with hash 116880414, now seen corresponding path program 73 times [2021-10-06 21:10:37,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:10:37,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693365126] [2021-10-06 21:10:37,646 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:10:37,647 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:10:37,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:10:37,648 INFO L229 MonitoredProcess]: Starting monitored process 171 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:10:37,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (171)] Waiting until timeout for monitored process [2021-10-06 21:10:40,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:10:40,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:10:40,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:10:40,945 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:10:40,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:10:41,163 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:10:41,164 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:10:41,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693365126] [2021-10-06 21:10:41,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [693365126] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:10:41,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:10:41,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:10:41,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213167427] [2021-10-06 21:10:41,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:10:41,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:10:41,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:10:41,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:10:41,166 INFO L87 Difference]: Start difference. First operand 852 states and 3374 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:41,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:10:41,610 INFO L93 Difference]: Finished difference Result 1226 states and 4574 transitions. [2021-10-06 21:10:41,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:10:41,611 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:10:41,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:10:41,614 INFO L225 Difference]: With dead ends: 1226 [2021-10-06 21:10:41,614 INFO L226 Difference]: Without dead ends: 1226 [2021-10-06 21:10:41,614 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 392.8ms TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:10:41,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2021-10-06 21:10:41,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 850. [2021-10-06 21:10:41,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 849 states have (on average 3.9681978798586575) internal successors, (3369), 849 states have internal predecessors, (3369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:41,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 3369 transitions. [2021-10-06 21:10:41,631 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 3369 transitions. Word has length 24 [2021-10-06 21:10:41,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:10:41,631 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 3369 transitions. [2021-10-06 21:10:41,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:41,632 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 3369 transitions. [2021-10-06 21:10:41,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:10:41,633 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:10:41,633 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:10:41,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (171)] Ended with exit code 0 [2021-10-06 21:10:41,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:10:41,834 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:10:41,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:10:41,835 INFO L82 PathProgramCache]: Analyzing trace with hash -503231658, now seen corresponding path program 66 times [2021-10-06 21:10:41,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:10:41,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144744885] [2021-10-06 21:10:41,836 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:10:41,836 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:10:41,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:10:41,838 INFO L229 MonitoredProcess]: Starting monitored process 172 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:10:41,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (172)] Waiting until timeout for monitored process [2021-10-06 21:10:45,079 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:10:45,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:10:45,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:10:45,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:10:45,474 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:10:45,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:10:45,664 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:10:45,665 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:10:45,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144744885] [2021-10-06 21:10:45,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144744885] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:10:45,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:10:45,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:10:45,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552619709] [2021-10-06 21:10:45,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:10:45,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:10:45,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:10:45,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:10:45,666 INFO L87 Difference]: Start difference. First operand 850 states and 3369 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:46,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:10:46,840 INFO L93 Difference]: Finished difference Result 1224 states and 4546 transitions. [2021-10-06 21:10:46,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:10:46,841 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:10:46,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:10:46,844 INFO L225 Difference]: With dead ends: 1224 [2021-10-06 21:10:46,844 INFO L226 Difference]: Without dead ends: 1218 [2021-10-06 21:10:46,844 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 831.3ms TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:10:46,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2021-10-06 21:10:46,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 862. [2021-10-06 21:10:46,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 861 states have (on average 3.9744483159117308) internal successors, (3422), 861 states have internal predecessors, (3422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:46,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 3422 transitions. [2021-10-06 21:10:46,861 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 3422 transitions. Word has length 24 [2021-10-06 21:10:46,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:10:46,861 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 3422 transitions. [2021-10-06 21:10:46,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:46,861 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 3422 transitions. [2021-10-06 21:10:46,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:10:46,863 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:10:46,863 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:10:46,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (172)] Forceful destruction successful, exit code 0 [2021-10-06 21:10:47,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 172 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:10:47,064 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:10:47,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:10:47,065 INFO L82 PathProgramCache]: Analyzing trace with hash 26853764, now seen corresponding path program 74 times [2021-10-06 21:10:47,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:10:47,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101674439] [2021-10-06 21:10:47,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:10:47,066 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:10:47,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:10:47,067 INFO L229 MonitoredProcess]: Starting monitored process 173 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:10:47,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (173)] Waiting until timeout for monitored process [2021-10-06 21:10:50,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:10:50,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:10:50,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:10:50,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:10:50,558 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:10:50,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:10:50,757 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:10:50,758 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:10:50,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101674439] [2021-10-06 21:10:50,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101674439] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:10:50,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:10:50,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:10:50,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123567292] [2021-10-06 21:10:50,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:10:50,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:10:50,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:10:50,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:10:50,760 INFO L87 Difference]: Start difference. First operand 862 states and 3422 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:51,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:10:51,875 INFO L93 Difference]: Finished difference Result 1208 states and 4521 transitions. [2021-10-06 21:10:51,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:10:51,875 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:10:51,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:10:51,878 INFO L225 Difference]: With dead ends: 1208 [2021-10-06 21:10:51,878 INFO L226 Difference]: Without dead ends: 1204 [2021-10-06 21:10:51,878 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 939.3ms TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:10:51,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2021-10-06 21:10:51,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 870. [2021-10-06 21:10:51,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 3.9769850402761797) internal successors, (3456), 869 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:51,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 3456 transitions. [2021-10-06 21:10:51,895 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 3456 transitions. Word has length 24 [2021-10-06 21:10:51,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:10:51,895 INFO L470 AbstractCegarLoop]: Abstraction has 870 states and 3456 transitions. [2021-10-06 21:10:51,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:51,896 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 3456 transitions. [2021-10-06 21:10:51,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:10:51,897 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:10:51,897 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:10:51,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (173)] Forceful destruction successful, exit code 0 [2021-10-06 21:10:52,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 173 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:10:52,098 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:10:52,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:10:52,099 INFO L82 PathProgramCache]: Analyzing trace with hash 872086016, now seen corresponding path program 75 times [2021-10-06 21:10:52,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:10:52,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2139456824] [2021-10-06 21:10:52,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:10:52,100 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:10:52,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:10:52,101 INFO L229 MonitoredProcess]: Starting monitored process 174 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:10:52,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (174)] Waiting until timeout for monitored process [2021-10-06 21:10:55,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:10:55,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:10:55,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:10:55,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:10:55,681 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:10:55,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:10:55,931 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:10:55,932 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:10:55,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2139456824] [2021-10-06 21:10:55,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2139456824] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:10:55,932 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:10:55,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:10:55,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168756684] [2021-10-06 21:10:55,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:10:55,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:10:55,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:10:55,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:10:55,934 INFO L87 Difference]: Start difference. First operand 870 states and 3456 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:56,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:10:56,339 INFO L93 Difference]: Finished difference Result 1210 states and 4564 transitions. [2021-10-06 21:10:56,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:10:56,339 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:10:56,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:10:56,342 INFO L225 Difference]: With dead ends: 1210 [2021-10-06 21:10:56,342 INFO L226 Difference]: Without dead ends: 1210 [2021-10-06 21:10:56,342 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 335.3ms TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:10:56,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-10-06 21:10:56,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 870. [2021-10-06 21:10:56,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 3.9769850402761797) internal successors, (3456), 869 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:56,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 3456 transitions. [2021-10-06 21:10:56,359 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 3456 transitions. Word has length 24 [2021-10-06 21:10:56,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:10:56,359 INFO L470 AbstractCegarLoop]: Abstraction has 870 states and 3456 transitions. [2021-10-06 21:10:56,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:56,360 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 3456 transitions. [2021-10-06 21:10:56,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:10:56,361 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:10:56,361 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:10:56,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (174)] Forceful destruction successful, exit code 0 [2021-10-06 21:10:56,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 174 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:10:56,562 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:10:56,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:10:56,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1629810222, now seen corresponding path program 67 times [2021-10-06 21:10:56,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:10:56,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1084344897] [2021-10-06 21:10:56,564 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:10:56,564 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:10:56,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:10:56,565 INFO L229 MonitoredProcess]: Starting monitored process 175 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:10:56,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (175)] Waiting until timeout for monitored process [2021-10-06 21:10:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:10:59,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:10:59,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:10:59,863 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:10:59,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:00,065 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:11:00,065 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:00,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1084344897] [2021-10-06 21:11:00,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1084344897] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:11:00,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:11:00,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:11:00,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785497192] [2021-10-06 21:11:00,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:11:00,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:00,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:11:00,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:11:00,067 INFO L87 Difference]: Start difference. First operand 870 states and 3456 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:01,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:01,234 INFO L93 Difference]: Finished difference Result 1236 states and 4638 transitions. [2021-10-06 21:11:01,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:11:01,235 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:11:01,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:01,238 INFO L225 Difference]: With dead ends: 1236 [2021-10-06 21:11:01,238 INFO L226 Difference]: Without dead ends: 1236 [2021-10-06 21:11:01,239 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 796.6ms TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:11:01,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2021-10-06 21:11:01,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 866. [2021-10-06 21:11:01,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 865 states have (on average 3.9826589595375723) internal successors, (3445), 865 states have internal predecessors, (3445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:01,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 3445 transitions. [2021-10-06 21:11:01,256 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 3445 transitions. Word has length 24 [2021-10-06 21:11:01,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:01,257 INFO L470 AbstractCegarLoop]: Abstraction has 866 states and 3445 transitions. [2021-10-06 21:11:01,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:01,257 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 3445 transitions. [2021-10-06 21:11:01,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:11:01,258 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:01,258 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:11:01,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (175)] Ended with exit code 0 [2021-10-06 21:11:01,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:11:01,459 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:11:01,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:01,460 INFO L82 PathProgramCache]: Analyzing trace with hash 549276450, now seen corresponding path program 76 times [2021-10-06 21:11:01,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:01,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111803127] [2021-10-06 21:11:01,461 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:11:01,462 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:01,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:01,463 INFO L229 MonitoredProcess]: Starting monitored process 176 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:01,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (176)] Waiting until timeout for monitored process [2021-10-06 21:11:04,437 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:11:04,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:11:04,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:11:04,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:04,914 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:11:04,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:05,143 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:11:05,143 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:05,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111803127] [2021-10-06 21:11:05,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1111803127] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:11:05,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:11:05,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:11:05,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127599475] [2021-10-06 21:11:05,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:11:05,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:05,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:11:05,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:11:05,145 INFO L87 Difference]: Start difference. First operand 866 states and 3445 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:05,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:05,577 INFO L93 Difference]: Finished difference Result 1216 states and 4589 transitions. [2021-10-06 21:11:05,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:11:05,578 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:11:05,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:05,581 INFO L225 Difference]: With dead ends: 1216 [2021-10-06 21:11:05,581 INFO L226 Difference]: Without dead ends: 1216 [2021-10-06 21:11:05,581 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 393.9ms TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:11:05,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2021-10-06 21:11:05,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 866. [2021-10-06 21:11:05,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 865 states have (on average 3.984971098265896) internal successors, (3447), 865 states have internal predecessors, (3447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:05,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 3447 transitions. [2021-10-06 21:11:05,598 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 3447 transitions. Word has length 24 [2021-10-06 21:11:05,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:05,598 INFO L470 AbstractCegarLoop]: Abstraction has 866 states and 3447 transitions. [2021-10-06 21:11:05,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:05,598 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 3447 transitions. [2021-10-06 21:11:05,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:11:05,600 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:05,600 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:11:05,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (176)] Ended with exit code 0 [2021-10-06 21:11:05,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:11:05,801 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:11:05,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:05,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1293978948, now seen corresponding path program 77 times [2021-10-06 21:11:05,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:05,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [569603355] [2021-10-06 21:11:05,803 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:11:05,803 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:05,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:05,805 INFO L229 MonitoredProcess]: Starting monitored process 177 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:05,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (177)] Waiting until timeout for monitored process [2021-10-06 21:11:08,861 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:11:08,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:11:08,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:11:08,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:09,338 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:11:09,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:09,566 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:11:09,566 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:09,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [569603355] [2021-10-06 21:11:09,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [569603355] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:11:09,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:11:09,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:11:09,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807051776] [2021-10-06 21:11:09,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:11:09,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:09,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:11:09,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:11:09,568 INFO L87 Difference]: Start difference. First operand 866 states and 3447 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:09,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:09,955 INFO L93 Difference]: Finished difference Result 1204 states and 4557 transitions. [2021-10-06 21:11:09,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:11:09,956 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:11:09,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:09,958 INFO L225 Difference]: With dead ends: 1204 [2021-10-06 21:11:09,959 INFO L226 Difference]: Without dead ends: 1204 [2021-10-06 21:11:09,959 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 363.8ms TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:11:09,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2021-10-06 21:11:09,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 850. [2021-10-06 21:11:09,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 849 states have (on average 3.96113074204947) internal successors, (3363), 849 states have internal predecessors, (3363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:09,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 3363 transitions. [2021-10-06 21:11:09,975 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 3363 transitions. Word has length 24 [2021-10-06 21:11:09,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:09,976 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 3363 transitions. [2021-10-06 21:11:09,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:09,976 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 3363 transitions. [2021-10-06 21:11:09,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:11:09,977 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:09,977 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:11:09,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (177)] Forceful destruction successful, exit code 0 [2021-10-06 21:11:10,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 177 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:11:10,178 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:11:10,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:10,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1731076940, now seen corresponding path program 68 times [2021-10-06 21:11:10,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:10,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1695847742] [2021-10-06 21:11:10,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:11:10,180 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:10,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:10,182 INFO L229 MonitoredProcess]: Starting monitored process 178 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:10,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (178)] Waiting until timeout for monitored process [2021-10-06 21:11:13,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:11:13,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:11:13,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:11:13,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:13,824 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:11:13,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:14,038 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:11:14,038 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:14,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1695847742] [2021-10-06 21:11:14,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1695847742] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:11:14,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:11:14,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:11:14,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853269281] [2021-10-06 21:11:14,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:11:14,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:14,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:11:14,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:11:14,040 INFO L87 Difference]: Start difference. First operand 850 states and 3363 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:14,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:14,562 INFO L93 Difference]: Finished difference Result 1194 states and 4535 transitions. [2021-10-06 21:11:14,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:11:14,563 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:11:14,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:14,566 INFO L225 Difference]: With dead ends: 1194 [2021-10-06 21:11:14,566 INFO L226 Difference]: Without dead ends: 1194 [2021-10-06 21:11:14,566 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 414.1ms TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:11:14,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2021-10-06 21:11:14,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 858. [2021-10-06 21:11:14,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 857 states have (on average 3.9778296382730454) internal successors, (3409), 857 states have internal predecessors, (3409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:14,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 3409 transitions. [2021-10-06 21:11:14,582 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 3409 transitions. Word has length 24 [2021-10-06 21:11:14,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:14,583 INFO L470 AbstractCegarLoop]: Abstraction has 858 states and 3409 transitions. [2021-10-06 21:11:14,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:14,583 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 3409 transitions. [2021-10-06 21:11:14,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:11:14,584 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:14,584 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:11:14,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (178)] Forceful destruction successful, exit code 0 [2021-10-06 21:11:14,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 178 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:11:14,785 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:11:14,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:14,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1369269014, now seen corresponding path program 69 times [2021-10-06 21:11:14,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:14,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690564461] [2021-10-06 21:11:14,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:11:14,787 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:14,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:14,788 INFO L229 MonitoredProcess]: Starting monitored process 179 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:14,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (179)] Waiting until timeout for monitored process [2021-10-06 21:11:18,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:11:18,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:11:18,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:11:18,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:18,487 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:11:18,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:18,710 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:11:18,711 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:18,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690564461] [2021-10-06 21:11:18,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690564461] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:11:18,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:11:18,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:11:18,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770235893] [2021-10-06 21:11:18,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:11:18,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:18,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:11:18,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:11:18,712 INFO L87 Difference]: Start difference. First operand 858 states and 3409 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:19,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:19,128 INFO L93 Difference]: Finished difference Result 1178 states and 4497 transitions. [2021-10-06 21:11:19,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:11:19,129 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:11:19,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:19,132 INFO L225 Difference]: With dead ends: 1178 [2021-10-06 21:11:19,132 INFO L226 Difference]: Without dead ends: 1178 [2021-10-06 21:11:19,132 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 378.0ms TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:11:19,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2021-10-06 21:11:19,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 846. [2021-10-06 21:11:19,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 845 states have (on average 3.951479289940828) internal successors, (3339), 845 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:19,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 3339 transitions. [2021-10-06 21:11:19,149 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 3339 transitions. Word has length 24 [2021-10-06 21:11:19,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:19,149 INFO L470 AbstractCegarLoop]: Abstraction has 846 states and 3339 transitions. [2021-10-06 21:11:19,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:19,149 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 3339 transitions. [2021-10-06 21:11:19,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:11:19,150 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:19,151 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:11:19,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (179)] Ended with exit code 0 [2021-10-06 21:11:19,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 179 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:11:19,351 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:11:19,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:19,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1018674366, now seen corresponding path program 70 times [2021-10-06 21:11:19,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:19,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1394026578] [2021-10-06 21:11:19,353 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:11:19,354 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:19,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:19,355 INFO L229 MonitoredProcess]: Starting monitored process 180 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:19,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (180)] Waiting until timeout for monitored process [2021-10-06 21:11:22,371 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:11:22,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:11:22,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:11:22,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:22,536 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:11:22,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:22,671 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:11:22,671 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:22,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1394026578] [2021-10-06 21:11:22,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1394026578] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:11:22,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:11:22,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2021-10-06 21:11:22,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441993186] [2021-10-06 21:11:22,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:11:22,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:22,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:11:22,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:11:22,673 INFO L87 Difference]: Start difference. First operand 846 states and 3339 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:23,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:23,011 INFO L93 Difference]: Finished difference Result 1078 states and 4114 transitions. [2021-10-06 21:11:23,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:11:23,011 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:11:23,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:23,014 INFO L225 Difference]: With dead ends: 1078 [2021-10-06 21:11:23,014 INFO L226 Difference]: Without dead ends: 1078 [2021-10-06 21:11:23,014 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 143.8ms TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:11:23,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2021-10-06 21:11:23,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 842. [2021-10-06 21:11:23,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 841 states have (on average 3.953626634958383) internal successors, (3325), 841 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:23,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 3325 transitions. [2021-10-06 21:11:23,030 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 3325 transitions. Word has length 24 [2021-10-06 21:11:23,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:23,030 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 3325 transitions. [2021-10-06 21:11:23,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:23,030 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 3325 transitions. [2021-10-06 21:11:23,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:11:23,032 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:23,032 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:11:23,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (180)] Forceful destruction successful, exit code 0 [2021-10-06 21:11:23,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 180 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:11:23,233 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:11:23,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:23,234 INFO L82 PathProgramCache]: Analyzing trace with hash 2026115346, now seen corresponding path program 71 times [2021-10-06 21:11:23,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:23,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372305228] [2021-10-06 21:11:23,235 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:11:23,235 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:23,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:23,236 INFO L229 MonitoredProcess]: Starting monitored process 181 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:23,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (181)] Waiting until timeout for monitored process [2021-10-06 21:11:26,372 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:11:26,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:11:26,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:11:26,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:26,615 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:11:26,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:26,768 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:11:26,769 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:26,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [372305228] [2021-10-06 21:11:26,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [372305228] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:11:26,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:11:26,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-10-06 21:11:26,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120406936] [2021-10-06 21:11:26,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:11:26,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:26,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:11:26,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:11:26,771 INFO L87 Difference]: Start difference. First operand 842 states and 3325 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:27,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:27,136 INFO L93 Difference]: Finished difference Result 1120 states and 4233 transitions. [2021-10-06 21:11:27,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:11:27,137 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:11:27,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:27,140 INFO L225 Difference]: With dead ends: 1120 [2021-10-06 21:11:27,140 INFO L226 Difference]: Without dead ends: 1120 [2021-10-06 21:11:27,140 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 215.4ms TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:11:27,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2021-10-06 21:11:27,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 842. [2021-10-06 21:11:27,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 841 states have (on average 3.956004756242568) internal successors, (3327), 841 states have internal predecessors, (3327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:27,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 3327 transitions. [2021-10-06 21:11:27,156 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 3327 transitions. Word has length 24 [2021-10-06 21:11:27,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:27,156 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 3327 transitions. [2021-10-06 21:11:27,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:27,156 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 3327 transitions. [2021-10-06 21:11:27,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:11:27,158 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:27,158 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:11:27,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (181)] Forceful destruction successful, exit code 0 [2021-10-06 21:11:27,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 181 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:11:27,359 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:11:27,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:27,360 INFO L82 PathProgramCache]: Analyzing trace with hash -779446954, now seen corresponding path program 72 times [2021-10-06 21:11:27,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:27,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457676607] [2021-10-06 21:11:27,361 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:11:27,361 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:27,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:27,362 INFO L229 MonitoredProcess]: Starting monitored process 182 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:27,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (182)] Waiting until timeout for monitored process [2021-10-06 21:11:30,797 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:11:30,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:11:30,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:11:30,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:31,021 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:11:31,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:31,176 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:11:31,177 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:31,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457676607] [2021-10-06 21:11:31,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457676607] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:11:31,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:11:31,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-10-06 21:11:31,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321905029] [2021-10-06 21:11:31,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:11:31,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:31,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:11:31,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:11:31,179 INFO L87 Difference]: Start difference. First operand 842 states and 3327 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:31,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:31,536 INFO L93 Difference]: Finished difference Result 1092 states and 4162 transitions. [2021-10-06 21:11:31,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:11:31,538 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:11:31,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:31,542 INFO L225 Difference]: With dead ends: 1092 [2021-10-06 21:11:31,542 INFO L226 Difference]: Without dead ends: 1092 [2021-10-06 21:11:31,542 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 197.0ms TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:11:31,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2021-10-06 21:11:31,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 818. [2021-10-06 21:11:31,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 817 states have (on average 3.922888616891065) internal successors, (3205), 817 states have internal predecessors, (3205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:31,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 3205 transitions. [2021-10-06 21:11:31,561 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 3205 transitions. Word has length 24 [2021-10-06 21:11:31,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:31,561 INFO L470 AbstractCegarLoop]: Abstraction has 818 states and 3205 transitions. [2021-10-06 21:11:31,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:31,561 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 3205 transitions. [2021-10-06 21:11:31,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:11:31,562 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:31,563 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:11:31,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (182)] Forceful destruction successful, exit code 0 [2021-10-06 21:11:31,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 182 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:11:31,763 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:11:31,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:31,765 INFO L82 PathProgramCache]: Analyzing trace with hash -243466886, now seen corresponding path program 73 times [2021-10-06 21:11:31,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:31,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404165757] [2021-10-06 21:11:31,768 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:11:31,768 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:31,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:31,769 INFO L229 MonitoredProcess]: Starting monitored process 183 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:31,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (183)] Waiting until timeout for monitored process [2021-10-06 21:11:34,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:11:34,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:11:34,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:34,954 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:11:34,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:35,110 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:11:35,110 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:35,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404165757] [2021-10-06 21:11:35,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404165757] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:11:35,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:11:35,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-10-06 21:11:35,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882236811] [2021-10-06 21:11:35,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:11:35,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:35,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:11:35,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:11:35,112 INFO L87 Difference]: Start difference. First operand 818 states and 3205 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:35,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:35,460 INFO L93 Difference]: Finished difference Result 1102 states and 4147 transitions. [2021-10-06 21:11:35,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:11:35,461 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:11:35,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:35,464 INFO L225 Difference]: With dead ends: 1102 [2021-10-06 21:11:35,464 INFO L226 Difference]: Without dead ends: 1102 [2021-10-06 21:11:35,464 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 207.4ms TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:11:35,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2021-10-06 21:11:35,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 834. [2021-10-06 21:11:35,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 833 states have (on average 3.948379351740696) internal successors, (3289), 833 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:35,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 3289 transitions. [2021-10-06 21:11:35,480 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 3289 transitions. Word has length 24 [2021-10-06 21:11:35,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:35,481 INFO L470 AbstractCegarLoop]: Abstraction has 834 states and 3289 transitions. [2021-10-06 21:11:35,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:35,481 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 3289 transitions. [2021-10-06 21:11:35,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:11:35,482 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:35,482 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:11:35,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (183)] Forceful destruction successful, exit code 0 [2021-10-06 21:11:35,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 183 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:11:35,683 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:11:35,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:35,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1245938110, now seen corresponding path program 74 times [2021-10-06 21:11:35,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:35,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1381806208] [2021-10-06 21:11:35,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:11:35,686 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:35,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:35,687 INFO L229 MonitoredProcess]: Starting monitored process 184 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:35,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (184)] Waiting until timeout for monitored process [2021-10-06 21:11:39,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:11:39,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:11:39,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:11:39,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:39,247 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:11:39,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:39,403 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:11:39,404 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:39,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1381806208] [2021-10-06 21:11:39,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1381806208] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:11:39,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:11:39,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-10-06 21:11:39,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621229154] [2021-10-06 21:11:39,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:11:39,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:39,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:11:39,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:11:39,406 INFO L87 Difference]: Start difference. First operand 834 states and 3289 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:39,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:39,772 INFO L93 Difference]: Finished difference Result 1118 states and 4195 transitions. [2021-10-06 21:11:39,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:11:39,774 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:11:39,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:39,777 INFO L225 Difference]: With dead ends: 1118 [2021-10-06 21:11:39,777 INFO L226 Difference]: Without dead ends: 1118 [2021-10-06 21:11:39,777 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 224.3ms TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:11:39,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2021-10-06 21:11:39,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 826. [2021-10-06 21:11:39,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 825 states have (on average 3.930909090909091) internal successors, (3243), 825 states have internal predecessors, (3243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:39,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 3243 transitions. [2021-10-06 21:11:39,793 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 3243 transitions. Word has length 24 [2021-10-06 21:11:39,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:39,793 INFO L470 AbstractCegarLoop]: Abstraction has 826 states and 3243 transitions. [2021-10-06 21:11:39,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:39,793 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 3243 transitions. [2021-10-06 21:11:39,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:11:39,795 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:39,795 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:11:39,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (184)] Forceful destruction successful, exit code 0 [2021-10-06 21:11:39,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 184 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:11:39,996 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:11:39,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:39,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1308956734, now seen corresponding path program 75 times [2021-10-06 21:11:39,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:39,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074203486] [2021-10-06 21:11:39,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:11:39,998 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:39,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:39,999 INFO L229 MonitoredProcess]: Starting monitored process 185 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:40,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (185)] Waiting until timeout for monitored process [2021-10-06 21:11:43,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:11:43,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:11:43,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:11:43,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:43,364 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:11:43,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:43,481 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:11:43,482 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:43,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074203486] [2021-10-06 21:11:43,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074203486] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:11:43,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:11:43,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2021-10-06 21:11:43,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991703029] [2021-10-06 21:11:43,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:11:43,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:43,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:11:43,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:11:43,483 INFO L87 Difference]: Start difference. First operand 826 states and 3243 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:43,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:43,839 INFO L93 Difference]: Finished difference Result 1060 states and 4011 transitions. [2021-10-06 21:11:43,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:11:43,839 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:11:43,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:43,842 INFO L225 Difference]: With dead ends: 1060 [2021-10-06 21:11:43,842 INFO L226 Difference]: Without dead ends: 1060 [2021-10-06 21:11:43,842 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 138.9ms TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:11:43,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2021-10-06 21:11:43,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 818. [2021-10-06 21:11:43,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 817 states have (on average 3.922888616891065) internal successors, (3205), 817 states have internal predecessors, (3205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:43,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 3205 transitions. [2021-10-06 21:11:43,857 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 3205 transitions. Word has length 24 [2021-10-06 21:11:43,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:43,858 INFO L470 AbstractCegarLoop]: Abstraction has 818 states and 3205 transitions. [2021-10-06 21:11:43,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:43,858 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 3205 transitions. [2021-10-06 21:11:43,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:11:43,859 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:43,859 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:11:43,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (185)] Forceful destruction successful, exit code 0 [2021-10-06 21:11:44,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:11:44,060 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:11:44,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:44,061 INFO L82 PathProgramCache]: Analyzing trace with hash 907474476, now seen corresponding path program 78 times [2021-10-06 21:11:44,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:44,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565228550] [2021-10-06 21:11:44,062 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:11:44,062 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:44,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:44,063 INFO L229 MonitoredProcess]: Starting monitored process 186 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:44,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (186)] Waiting until timeout for monitored process [2021-10-06 21:11:47,490 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:11:47,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:11:47,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:11:47,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:47,807 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:11:47,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:48,007 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:11:48,008 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:48,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565228550] [2021-10-06 21:11:48,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565228550] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:11:48,008 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:11:48,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:11:48,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150886763] [2021-10-06 21:11:48,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:11:48,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:48,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:11:48,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:11:48,010 INFO L87 Difference]: Start difference. First operand 818 states and 3205 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:48,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:48,888 INFO L93 Difference]: Finished difference Result 1050 states and 3824 transitions. [2021-10-06 21:11:48,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 21:11:48,889 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:11:48,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:48,891 INFO L225 Difference]: With dead ends: 1050 [2021-10-06 21:11:48,891 INFO L226 Difference]: Without dead ends: 1046 [2021-10-06 21:11:48,891 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 805.8ms TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:11:48,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2021-10-06 21:11:48,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 824. [2021-10-06 21:11:48,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 823 states have (on average 3.922235722964763) internal successors, (3228), 823 states have internal predecessors, (3228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:48,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 3228 transitions. [2021-10-06 21:11:48,906 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 3228 transitions. Word has length 24 [2021-10-06 21:11:48,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:48,906 INFO L470 AbstractCegarLoop]: Abstraction has 824 states and 3228 transitions. [2021-10-06 21:11:48,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:48,906 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 3228 transitions. [2021-10-06 21:11:48,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:11:48,907 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:48,908 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:11:48,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (186)] Forceful destruction successful, exit code 0 [2021-10-06 21:11:49,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 186 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:11:49,108 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:11:49,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:49,109 INFO L82 PathProgramCache]: Analyzing trace with hash -602936728, now seen corresponding path program 79 times [2021-10-06 21:11:49,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:49,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063041340] [2021-10-06 21:11:49,110 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:11:49,111 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:49,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:49,112 INFO L229 MonitoredProcess]: Starting monitored process 187 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:49,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (187)] Waiting until timeout for monitored process [2021-10-06 21:11:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:11:52,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:11:52,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:52,589 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:11:52,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:52,798 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:11:52,799 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:52,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063041340] [2021-10-06 21:11:52,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1063041340] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:11:52,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:11:52,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:11:52,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987153773] [2021-10-06 21:11:52,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:11:52,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:52,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:11:52,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:11:52,801 INFO L87 Difference]: Start difference. First operand 824 states and 3228 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:53,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:53,195 INFO L93 Difference]: Finished difference Result 1026 states and 3783 transitions. [2021-10-06 21:11:53,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:11:53,196 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:11:53,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:53,199 INFO L225 Difference]: With dead ends: 1026 [2021-10-06 21:11:53,199 INFO L226 Difference]: Without dead ends: 1026 [2021-10-06 21:11:53,199 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 335.7ms TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:11:53,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2021-10-06 21:11:53,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 818. [2021-10-06 21:11:53,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 817 states have (on average 3.922888616891065) internal successors, (3205), 817 states have internal predecessors, (3205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:53,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 3205 transitions. [2021-10-06 21:11:53,214 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 3205 transitions. Word has length 24 [2021-10-06 21:11:53,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:53,214 INFO L470 AbstractCegarLoop]: Abstraction has 818 states and 3205 transitions. [2021-10-06 21:11:53,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:53,215 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 3205 transitions. [2021-10-06 21:11:53,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:11:53,216 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:53,216 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:11:53,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (187)] Forceful destruction successful, exit code 0 [2021-10-06 21:11:53,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 187 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:11:53,417 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:11:53,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:53,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1433915476, now seen corresponding path program 80 times [2021-10-06 21:11:53,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:53,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [976857571] [2021-10-06 21:11:53,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:11:53,419 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:53,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:53,421 INFO L229 MonitoredProcess]: Starting monitored process 188 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:53,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (188)] Waiting until timeout for monitored process [2021-10-06 21:11:56,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:11:56,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:11:56,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:11:56,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:57,060 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:11:57,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:57,224 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:11:57,225 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:57,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [976857571] [2021-10-06 21:11:57,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [976857571] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:11:57,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:11:57,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-10-06 21:11:57,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121757004] [2021-10-06 21:11:57,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:11:57,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:57,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:11:57,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:11:57,226 INFO L87 Difference]: Start difference. First operand 818 states and 3205 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:57,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:57,789 INFO L93 Difference]: Finished difference Result 1024 states and 3766 transitions. [2021-10-06 21:11:57,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:11:57,790 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:11:57,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:57,792 INFO L225 Difference]: With dead ends: 1024 [2021-10-06 21:11:57,792 INFO L226 Difference]: Without dead ends: 1016 [2021-10-06 21:11:57,792 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 477.9ms TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:11:57,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2021-10-06 21:11:57,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 816. [2021-10-06 21:11:57,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 815 states have (on average 3.923926380368098) internal successors, (3198), 815 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:57,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 3198 transitions. [2021-10-06 21:11:57,807 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 3198 transitions. Word has length 24 [2021-10-06 21:11:57,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:57,807 INFO L470 AbstractCegarLoop]: Abstraction has 816 states and 3198 transitions. [2021-10-06 21:11:57,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:57,808 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 3198 transitions. [2021-10-06 21:11:57,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:11:57,809 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:57,809 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:11:57,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (188)] Forceful destruction successful, exit code 0 [2021-10-06 21:11:58,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 188 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:11:58,010 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:11:58,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:58,011 INFO L82 PathProgramCache]: Analyzing trace with hash -822461830, now seen corresponding path program 76 times [2021-10-06 21:11:58,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:58,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [341955366] [2021-10-06 21:11:58,012 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:11:58,012 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:58,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:58,013 INFO L229 MonitoredProcess]: Starting monitored process 189 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:11:58,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (189)] Waiting until timeout for monitored process [2021-10-06 21:12:01,134 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:12:01,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:12:01,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:12:01,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:01,537 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:12:01,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:01,733 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:12:01,733 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:01,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [341955366] [2021-10-06 21:12:01,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [341955366] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:12:01,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:12:01,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:12:01,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138300908] [2021-10-06 21:12:01,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:12:01,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:01,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:12:01,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:12:01,735 INFO L87 Difference]: Start difference. First operand 816 states and 3198 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:02,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:02,862 INFO L93 Difference]: Finished difference Result 1280 states and 4640 transitions. [2021-10-06 21:12:02,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:12:02,863 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:12:02,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:02,866 INFO L225 Difference]: With dead ends: 1280 [2021-10-06 21:12:02,866 INFO L226 Difference]: Without dead ends: 1274 [2021-10-06 21:12:02,866 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 850.7ms TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:12:02,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2021-10-06 21:12:02,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 820. [2021-10-06 21:12:02,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 819 states have (on average 3.924297924297924) internal successors, (3214), 819 states have internal predecessors, (3214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:02,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 3214 transitions. [2021-10-06 21:12:02,883 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 3214 transitions. Word has length 24 [2021-10-06 21:12:02,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:02,883 INFO L470 AbstractCegarLoop]: Abstraction has 820 states and 3214 transitions. [2021-10-06 21:12:02,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:02,883 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 3214 transitions. [2021-10-06 21:12:02,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:12:02,885 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:02,885 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:02,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (189)] Ended with exit code 0 [2021-10-06 21:12:03,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 189 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:12:03,086 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:12:03,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:03,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1638962932, now seen corresponding path program 77 times [2021-10-06 21:12:03,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:03,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679357533] [2021-10-06 21:12:03,088 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:12:03,088 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:03,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:03,089 INFO L229 MonitoredProcess]: Starting monitored process 190 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:12:03,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (190)] Waiting until timeout for monitored process [2021-10-06 21:12:06,287 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:12:06,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:12:06,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:12:06,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:06,789 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:12:06,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:06,995 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:12:06,996 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:06,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679357533] [2021-10-06 21:12:06,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679357533] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:12:06,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:12:06,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:12:06,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899366133] [2021-10-06 21:12:06,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:12:06,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:06,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:12:06,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:12:06,997 INFO L87 Difference]: Start difference. First operand 820 states and 3214 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:07,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:07,399 INFO L93 Difference]: Finished difference Result 1194 states and 4461 transitions. [2021-10-06 21:12:07,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:12:07,399 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:12:07,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:07,402 INFO L225 Difference]: With dead ends: 1194 [2021-10-06 21:12:07,403 INFO L226 Difference]: Without dead ends: 1194 [2021-10-06 21:12:07,403 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 347.3ms TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:12:07,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2021-10-06 21:12:07,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 818. [2021-10-06 21:12:07,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 817 states have (on average 3.9277845777233784) internal successors, (3209), 817 states have internal predecessors, (3209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:07,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 3209 transitions. [2021-10-06 21:12:07,421 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 3209 transitions. Word has length 24 [2021-10-06 21:12:07,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:07,421 INFO L470 AbstractCegarLoop]: Abstraction has 818 states and 3209 transitions. [2021-10-06 21:12:07,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:07,421 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 3209 transitions. [2021-10-06 21:12:07,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:12:07,423 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:07,423 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:07,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (190)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:07,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:12:07,624 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:12:07,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:07,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1892814262, now seen corresponding path program 81 times [2021-10-06 21:12:07,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:07,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159428265] [2021-10-06 21:12:07,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:12:07,626 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:07,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:07,628 INFO L229 MonitoredProcess]: Starting monitored process 191 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:12:07,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (191)] Waiting until timeout for monitored process [2021-10-06 21:12:10,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:12:10,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:12:10,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:12:10,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:11,382 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:12:11,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:11,599 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:12:11,600 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:11,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1159428265] [2021-10-06 21:12:11,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1159428265] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:12:11,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:12:11,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:12:11,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981624722] [2021-10-06 21:12:11,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:12:11,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:11,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:12:11,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:12:11,602 INFO L87 Difference]: Start difference. First operand 818 states and 3209 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:12,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:12,920 INFO L93 Difference]: Finished difference Result 1048 states and 3807 transitions. [2021-10-06 21:12:12,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:12:12,921 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:12:12,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:12,923 INFO L225 Difference]: With dead ends: 1048 [2021-10-06 21:12:12,923 INFO L226 Difference]: Without dead ends: 1044 [2021-10-06 21:12:12,923 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1074.8ms TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:12:12,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2021-10-06 21:12:12,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 822. [2021-10-06 21:12:12,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 821 states have (on average 3.928136419001218) internal successors, (3225), 821 states have internal predecessors, (3225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:12,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 3225 transitions. [2021-10-06 21:12:12,938 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 3225 transitions. Word has length 24 [2021-10-06 21:12:12,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:12,938 INFO L470 AbstractCegarLoop]: Abstraction has 822 states and 3225 transitions. [2021-10-06 21:12:12,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:12,938 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 3225 transitions. [2021-10-06 21:12:12,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:12:12,940 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:12,940 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:12,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (191)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:13,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 191 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:12:13,141 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:12:13,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:13,141 INFO L82 PathProgramCache]: Analyzing trace with hash 891741830, now seen corresponding path program 82 times [2021-10-06 21:12:13,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:13,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1050678790] [2021-10-06 21:12:13,142 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:12:13,143 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:13,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:13,145 INFO L229 MonitoredProcess]: Starting monitored process 192 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:12:13,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (192)] Waiting until timeout for monitored process [2021-10-06 21:12:16,325 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:12:16,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:12:16,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:12:16,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:16,750 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:12:16,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:16,971 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:12:16,972 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:16,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1050678790] [2021-10-06 21:12:16,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1050678790] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:12:16,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:12:16,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:12:16,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464426241] [2021-10-06 21:12:16,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:12:16,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:16,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:12:16,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:12:16,973 INFO L87 Difference]: Start difference. First operand 822 states and 3225 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:17,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:17,426 INFO L93 Difference]: Finished difference Result 1052 states and 3832 transitions. [2021-10-06 21:12:17,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:12:17,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:12:17,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:17,429 INFO L225 Difference]: With dead ends: 1052 [2021-10-06 21:12:17,429 INFO L226 Difference]: Without dead ends: 1052 [2021-10-06 21:12:17,429 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 383.4ms TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:12:17,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2021-10-06 21:12:17,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 820. [2021-10-06 21:12:17,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 819 states have (on average 3.9316239316239314) internal successors, (3220), 819 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:17,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 3220 transitions. [2021-10-06 21:12:17,444 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 3220 transitions. Word has length 24 [2021-10-06 21:12:17,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:17,444 INFO L470 AbstractCegarLoop]: Abstraction has 820 states and 3220 transitions. [2021-10-06 21:12:17,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:17,444 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 3220 transitions. [2021-10-06 21:12:17,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:12:17,446 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:17,446 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:17,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (192)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:17,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 192 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:12:17,648 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:12:17,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:17,649 INFO L82 PathProgramCache]: Analyzing trace with hash 271629758, now seen corresponding path program 78 times [2021-10-06 21:12:17,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:17,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1004612125] [2021-10-06 21:12:17,650 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:12:17,651 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:17,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:17,652 INFO L229 MonitoredProcess]: Starting monitored process 193 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:12:17,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (193)] Waiting until timeout for monitored process [2021-10-06 21:12:21,133 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:12:21,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:12:21,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:12:21,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:12:21,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:21,811 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:12:21,812 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:21,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1004612125] [2021-10-06 21:12:21,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1004612125] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:12:21,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:12:21,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:12:21,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390909756] [2021-10-06 21:12:21,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:12:21,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:21,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:12:21,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:12:21,814 INFO L87 Difference]: Start difference. First operand 820 states and 3220 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:22,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:22,925 INFO L93 Difference]: Finished difference Result 1332 states and 4787 transitions. [2021-10-06 21:12:22,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:12:22,926 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:12:22,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:22,928 INFO L225 Difference]: With dead ends: 1332 [2021-10-06 21:12:22,928 INFO L226 Difference]: Without dead ends: 1326 [2021-10-06 21:12:22,929 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 825.3ms TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:12:22,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2021-10-06 21:12:22,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 832. [2021-10-06 21:12:22,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 831 states have (on average 3.9386281588447654) internal successors, (3273), 831 states have internal predecessors, (3273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:22,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 3273 transitions. [2021-10-06 21:12:22,948 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 3273 transitions. Word has length 24 [2021-10-06 21:12:22,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:22,949 INFO L470 AbstractCegarLoop]: Abstraction has 832 states and 3273 transitions. [2021-10-06 21:12:22,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:22,949 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 3273 transitions. [2021-10-06 21:12:22,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:12:22,951 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:22,951 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:22,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (193)] Ended with exit code 0 [2021-10-06 21:12:23,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 193 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:12:23,152 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:12:23,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:23,153 INFO L82 PathProgramCache]: Analyzing trace with hash 801715180, now seen corresponding path program 83 times [2021-10-06 21:12:23,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:23,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [325176699] [2021-10-06 21:12:23,154 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:12:23,154 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:23,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:23,155 INFO L229 MonitoredProcess]: Starting monitored process 194 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:12:23,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (194)] Waiting until timeout for monitored process [2021-10-06 21:12:26,419 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:12:26,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:12:26,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:12:26,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:26,833 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:12:26,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:27,049 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:12:27,050 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:27,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [325176699] [2021-10-06 21:12:27,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [325176699] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:12:27,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:12:27,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:12:27,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616199848] [2021-10-06 21:12:27,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:12:27,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:27,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:12:27,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:12:27,052 INFO L87 Difference]: Start difference. First operand 832 states and 3273 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:28,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:28,290 INFO L93 Difference]: Finished difference Result 1064 states and 3894 transitions. [2021-10-06 21:12:28,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:12:28,291 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:12:28,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:28,293 INFO L225 Difference]: With dead ends: 1064 [2021-10-06 21:12:28,293 INFO L226 Difference]: Without dead ends: 1060 [2021-10-06 21:12:28,293 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1146.2ms TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:12:28,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2021-10-06 21:12:28,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 840. [2021-10-06 21:12:28,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 839 states have (on average 3.941597139451728) internal successors, (3307), 839 states have internal predecessors, (3307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:28,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 3307 transitions. [2021-10-06 21:12:28,310 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 3307 transitions. Word has length 24 [2021-10-06 21:12:28,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:28,310 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 3307 transitions. [2021-10-06 21:12:28,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:28,310 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 3307 transitions. [2021-10-06 21:12:28,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:12:28,312 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:28,312 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:28,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (194)] Ended with exit code 0 [2021-10-06 21:12:28,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 194 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:12:28,513 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:12:28,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:28,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1646947432, now seen corresponding path program 84 times [2021-10-06 21:12:28,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:28,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [993165553] [2021-10-06 21:12:28,515 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:12:28,515 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:28,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:28,517 INFO L229 MonitoredProcess]: Starting monitored process 195 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:12:28,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (195)] Waiting until timeout for monitored process [2021-10-06 21:12:32,029 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:12:32,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:12:32,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:12:32,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:32,460 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:12:32,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:32,698 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:12:32,698 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:32,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [993165553] [2021-10-06 21:12:32,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [993165553] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:12:32,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:12:32,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:12:32,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747688951] [2021-10-06 21:12:32,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:12:32,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:32,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:12:32,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:12:32,700 INFO L87 Difference]: Start difference. First operand 840 states and 3307 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:33,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:33,146 INFO L93 Difference]: Finished difference Result 1058 states and 3911 transitions. [2021-10-06 21:12:33,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:12:33,147 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:12:33,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:33,149 INFO L225 Difference]: With dead ends: 1058 [2021-10-06 21:12:33,149 INFO L226 Difference]: Without dead ends: 1058 [2021-10-06 21:12:33,150 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 375.1ms TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:12:33,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2021-10-06 21:12:33,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 840. [2021-10-06 21:12:33,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 839 states have (on average 3.941597139451728) internal successors, (3307), 839 states have internal predecessors, (3307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:33,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 3307 transitions. [2021-10-06 21:12:33,165 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 3307 transitions. Word has length 24 [2021-10-06 21:12:33,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:33,165 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 3307 transitions. [2021-10-06 21:12:33,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:33,166 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 3307 transitions. [2021-10-06 21:12:33,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:12:33,167 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:33,167 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:33,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (195)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:33,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:12:33,368 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:12:33,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:33,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1890295658, now seen corresponding path program 79 times [2021-10-06 21:12:33,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:33,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651519599] [2021-10-06 21:12:33,370 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:12:33,370 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:33,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:33,371 INFO L229 MonitoredProcess]: Starting monitored process 196 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:12:33,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (196)] Waiting until timeout for monitored process [2021-10-06 21:12:36,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:12:36,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:12:36,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:37,003 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:12:37,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:37,202 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:12:37,202 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:37,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651519599] [2021-10-06 21:12:37,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [651519599] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:12:37,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:12:37,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:12:37,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839388118] [2021-10-06 21:12:37,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:12:37,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:37,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:12:37,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:12:37,204 INFO L87 Difference]: Start difference. First operand 840 states and 3307 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:38,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:38,394 INFO L93 Difference]: Finished difference Result 1344 states and 4879 transitions. [2021-10-06 21:12:38,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:12:38,395 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:12:38,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:38,398 INFO L225 Difference]: With dead ends: 1344 [2021-10-06 21:12:38,399 INFO L226 Difference]: Without dead ends: 1344 [2021-10-06 21:12:38,399 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 816.4ms TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:12:38,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2021-10-06 21:12:38,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 836. [2021-10-06 21:12:38,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 835 states have (on average 3.947305389221557) internal successors, (3296), 835 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:38,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 3296 transitions. [2021-10-06 21:12:38,417 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 3296 transitions. Word has length 24 [2021-10-06 21:12:38,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:38,417 INFO L470 AbstractCegarLoop]: Abstraction has 836 states and 3296 transitions. [2021-10-06 21:12:38,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:38,417 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 3296 transitions. [2021-10-06 21:12:38,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:12:38,419 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:38,419 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:38,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (196)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:38,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 196 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:12:38,620 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:12:38,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:38,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1324137866, now seen corresponding path program 85 times [2021-10-06 21:12:38,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:38,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198153381] [2021-10-06 21:12:38,622 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:12:38,622 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:38,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:38,624 INFO L229 MonitoredProcess]: Starting monitored process 197 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:12:38,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (197)] Waiting until timeout for monitored process [2021-10-06 21:12:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:12:41,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:12:41,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:42,322 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:12:42,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:42,559 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:12:42,559 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:42,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [198153381] [2021-10-06 21:12:42,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [198153381] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:12:42,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:12:42,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:12:42,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850814630] [2021-10-06 21:12:42,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:12:42,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:42,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:12:42,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:12:42,561 INFO L87 Difference]: Start difference. First operand 836 states and 3296 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:43,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:43,002 INFO L93 Difference]: Finished difference Result 1062 states and 3908 transitions. [2021-10-06 21:12:43,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:12:43,003 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:12:43,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:43,005 INFO L225 Difference]: With dead ends: 1062 [2021-10-06 21:12:43,005 INFO L226 Difference]: Without dead ends: 1062 [2021-10-06 21:12:43,005 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 378.3ms TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:12:43,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2021-10-06 21:12:43,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 832. [2021-10-06 21:12:43,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 831 states have (on average 3.944645006016847) internal successors, (3278), 831 states have internal predecessors, (3278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:43,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 3278 transitions. [2021-10-06 21:12:43,021 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 3278 transitions. Word has length 24 [2021-10-06 21:12:43,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:43,021 INFO L470 AbstractCegarLoop]: Abstraction has 832 states and 3278 transitions. [2021-10-06 21:12:43,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:43,021 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 3278 transitions. [2021-10-06 21:12:43,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:12:43,023 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:43,023 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:43,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (197)] Ended with exit code 0 [2021-10-06 21:12:43,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 197 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:12:43,223 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:12:43,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:43,224 INFO L82 PathProgramCache]: Analyzing trace with hash 2068840364, now seen corresponding path program 86 times [2021-10-06 21:12:43,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:43,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625445800] [2021-10-06 21:12:43,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:12:43,225 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:43,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:43,226 INFO L229 MonitoredProcess]: Starting monitored process 198 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:12:43,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (198)] Waiting until timeout for monitored process [2021-10-06 21:12:46,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:12:46,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:12:46,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:12:46,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:47,220 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:12:47,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:47,463 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:12:47,463 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:47,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625445800] [2021-10-06 21:12:47,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625445800] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:12:47,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:12:47,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:12:47,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650566005] [2021-10-06 21:12:47,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:12:47,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:47,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:12:47,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:12:47,465 INFO L87 Difference]: Start difference. First operand 832 states and 3278 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:47,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:47,867 INFO L93 Difference]: Finished difference Result 1052 states and 3886 transitions. [2021-10-06 21:12:47,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:12:47,868 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:12:47,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:47,870 INFO L225 Difference]: With dead ends: 1052 [2021-10-06 21:12:47,870 INFO L226 Difference]: Without dead ends: 1052 [2021-10-06 21:12:47,871 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 367.9ms TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:12:47,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2021-10-06 21:12:47,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 816. [2021-10-06 21:12:47,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 815 states have (on average 3.9190184049079755) internal successors, (3194), 815 states have internal predecessors, (3194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:47,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 3194 transitions. [2021-10-06 21:12:47,886 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 3194 transitions. Word has length 24 [2021-10-06 21:12:47,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:47,886 INFO L470 AbstractCegarLoop]: Abstraction has 816 states and 3194 transitions. [2021-10-06 21:12:47,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:47,886 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 3194 transitions. [2021-10-06 21:12:47,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:12:47,888 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:47,888 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:47,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (198)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:48,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 198 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:12:48,088 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:12:48,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:48,089 INFO L82 PathProgramCache]: Analyzing trace with hash -956215524, now seen corresponding path program 80 times [2021-10-06 21:12:48,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:48,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37341596] [2021-10-06 21:12:48,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:12:48,091 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:48,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:48,092 INFO L229 MonitoredProcess]: Starting monitored process 199 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:12:48,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (199)] Waiting until timeout for monitored process [2021-10-06 21:12:51,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:12:51,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:12:51,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:12:51,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:52,058 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:12:52,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:52,271 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:12:52,271 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:52,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [37341596] [2021-10-06 21:12:52,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [37341596] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:12:52,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:12:52,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:12:52,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394085828] [2021-10-06 21:12:52,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:12:52,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:52,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:12:52,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:12:52,273 INFO L87 Difference]: Start difference. First operand 816 states and 3194 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:52,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:52,692 INFO L93 Difference]: Finished difference Result 1284 states and 4760 transitions. [2021-10-06 21:12:52,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:12:52,693 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:12:52,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:52,696 INFO L225 Difference]: With dead ends: 1284 [2021-10-06 21:12:52,696 INFO L226 Difference]: Without dead ends: 1284 [2021-10-06 21:12:52,696 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 372.3ms TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:12:52,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2021-10-06 21:12:52,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 824. [2021-10-06 21:12:52,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 823 states have (on average 3.93681652490887) internal successors, (3240), 823 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:52,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 3240 transitions. [2021-10-06 21:12:52,713 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 3240 transitions. Word has length 24 [2021-10-06 21:12:52,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:52,713 INFO L470 AbstractCegarLoop]: Abstraction has 824 states and 3240 transitions. [2021-10-06 21:12:52,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:52,713 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 3240 transitions. [2021-10-06 21:12:52,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:12:52,714 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:52,714 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:52,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (199)] Ended with exit code 0 [2021-10-06 21:12:52,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 199 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:12:52,915 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:12:52,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:52,916 INFO L82 PathProgramCache]: Analyzing trace with hash 2144130430, now seen corresponding path program 81 times [2021-10-06 21:12:52,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:52,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2042336201] [2021-10-06 21:12:52,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:12:52,917 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:52,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:52,919 INFO L229 MonitoredProcess]: Starting monitored process 200 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:12:52,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (200)] Waiting until timeout for monitored process [2021-10-06 21:12:56,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:12:56,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:12:56,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:12:56,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:12:56,928 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:12:56,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:12:57,151 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:12:57,152 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:12:57,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2042336201] [2021-10-06 21:12:57,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2042336201] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:12:57,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:12:57,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:12:57,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738680625] [2021-10-06 21:12:57,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:12:57,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:12:57,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:12:57,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:12:57,153 INFO L87 Difference]: Start difference. First operand 824 states and 3240 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:57,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:12:57,596 INFO L93 Difference]: Finished difference Result 1264 states and 4714 transitions. [2021-10-06 21:12:57,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:12:57,597 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:12:57,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:12:57,600 INFO L225 Difference]: With dead ends: 1264 [2021-10-06 21:12:57,600 INFO L226 Difference]: Without dead ends: 1264 [2021-10-06 21:12:57,600 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 394.5ms TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:12:57,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2021-10-06 21:12:57,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 814. [2021-10-06 21:12:57,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 813 states have (on average 3.912669126691267) internal successors, (3181), 813 states have internal predecessors, (3181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:57,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 3181 transitions. [2021-10-06 21:12:57,617 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 3181 transitions. Word has length 24 [2021-10-06 21:12:57,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:12:57,617 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 3181 transitions. [2021-10-06 21:12:57,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:12:57,617 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 3181 transitions. [2021-10-06 21:12:57,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:12:57,619 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:12:57,619 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:12:57,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (200)] Forceful destruction successful, exit code 0 [2021-10-06 21:12:57,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 200 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:12:57,820 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:12:57,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:12:57,821 INFO L82 PathProgramCache]: Analyzing trace with hash 492118602, now seen corresponding path program 87 times [2021-10-06 21:12:57,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:12:57,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285946702] [2021-10-06 21:12:57,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:12:57,822 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:12:57,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:12:57,823 INFO L229 MonitoredProcess]: Starting monitored process 201 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:12:57,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (201)] Waiting until timeout for monitored process [2021-10-06 21:13:01,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:13:01,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:13:01,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:13:01,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:01,822 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:13:01,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:01,993 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:13:01,994 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:01,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285946702] [2021-10-06 21:13:01,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285946702] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:13:01,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:13:01,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-10-06 21:13:01,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024476653] [2021-10-06 21:13:01,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:13:01,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:01,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:13:01,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:13:01,996 INFO L87 Difference]: Start difference. First operand 814 states and 3181 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:02,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:02,634 INFO L93 Difference]: Finished difference Result 974 states and 3635 transitions. [2021-10-06 21:13:02,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:13:02,635 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:13:02,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:02,637 INFO L225 Difference]: With dead ends: 974 [2021-10-06 21:13:02,637 INFO L226 Difference]: Without dead ends: 966 [2021-10-06 21:13:02,637 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 503.9ms TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:13:02,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2021-10-06 21:13:02,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 818. [2021-10-06 21:13:02,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 817 states have (on average 3.9069767441860463) internal successors, (3192), 817 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:02,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 3192 transitions. [2021-10-06 21:13:02,651 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 3192 transitions. Word has length 24 [2021-10-06 21:13:02,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:02,652 INFO L470 AbstractCegarLoop]: Abstraction has 818 states and 3192 transitions. [2021-10-06 21:13:02,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:02,652 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 3192 transitions. [2021-10-06 21:13:02,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:13:02,653 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:02,653 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:02,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (201)] Ended with exit code 0 [2021-10-06 21:13:02,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 201 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:02,854 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:13:02,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:02,855 INFO L82 PathProgramCache]: Analyzing trace with hash 702985278, now seen corresponding path program 82 times [2021-10-06 21:13:02,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:02,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1433948561] [2021-10-06 21:13:02,856 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:13:02,857 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:02,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:02,858 INFO L229 MonitoredProcess]: Starting monitored process 202 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:02,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (202)] Waiting until timeout for monitored process [2021-10-06 21:13:06,160 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:13:06,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:13:06,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:13:06,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:06,449 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:13:06,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:06,617 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:13:06,617 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:06,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1433948561] [2021-10-06 21:13:06,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1433948561] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:13:06,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:13:06,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:13:06,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283012545] [2021-10-06 21:13:06,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:13:06,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:06,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:13:06,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:13:06,619 INFO L87 Difference]: Start difference. First operand 818 states and 3192 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:07,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:07,536 INFO L93 Difference]: Finished difference Result 1216 states and 4442 transitions. [2021-10-06 21:13:07,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:13:07,536 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:13:07,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:07,539 INFO L225 Difference]: With dead ends: 1216 [2021-10-06 21:13:07,539 INFO L226 Difference]: Without dead ends: 1210 [2021-10-06 21:13:07,539 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 650.8ms TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:13:07,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-10-06 21:13:07,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 838. [2021-10-06 21:13:07,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 3.912783751493429) internal successors, (3275), 837 states have internal predecessors, (3275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:07,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 3275 transitions. [2021-10-06 21:13:07,556 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 3275 transitions. Word has length 24 [2021-10-06 21:13:07,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:07,556 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 3275 transitions. [2021-10-06 21:13:07,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:07,556 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 3275 transitions. [2021-10-06 21:13:07,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:13:07,558 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:07,558 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:07,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (202)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:07,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 202 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:07,759 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:13:07,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:07,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1233070700, now seen corresponding path program 88 times [2021-10-06 21:13:07,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:07,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [332713564] [2021-10-06 21:13:07,761 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:13:07,761 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:07,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:07,762 INFO L229 MonitoredProcess]: Starting monitored process 203 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:07,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (203)] Waiting until timeout for monitored process [2021-10-06 21:13:11,112 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:13:11,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:13:11,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:13:11,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:11,436 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:13:11,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:11,634 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:13:11,634 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:11,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [332713564] [2021-10-06 21:13:11,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [332713564] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:13:11,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:13:11,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:13:11,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193550307] [2021-10-06 21:13:11,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:13:11,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:11,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:13:11,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:13:11,636 INFO L87 Difference]: Start difference. First operand 838 states and 3275 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:12,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:12,576 INFO L93 Difference]: Finished difference Result 982 states and 3673 transitions. [2021-10-06 21:13:12,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 21:13:12,577 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:13:12,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:12,579 INFO L225 Difference]: With dead ends: 982 [2021-10-06 21:13:12,579 INFO L226 Difference]: Without dead ends: 978 [2021-10-06 21:13:12,579 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 823.7ms TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:13:12,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2021-10-06 21:13:12,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 846. [2021-10-06 21:13:12,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 845 states have (on average 3.915976331360947) internal successors, (3309), 845 states have internal predecessors, (3309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:12,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 3309 transitions. [2021-10-06 21:13:12,594 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 3309 transitions. Word has length 24 [2021-10-06 21:13:12,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:12,594 INFO L470 AbstractCegarLoop]: Abstraction has 846 states and 3309 transitions. [2021-10-06 21:13:12,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:12,595 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 3309 transitions. [2021-10-06 21:13:12,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:13:12,596 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:12,596 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:12,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (203)] Ended with exit code 0 [2021-10-06 21:13:12,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 203 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:12,797 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:13:12,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:12,798 INFO L82 PathProgramCache]: Analyzing trace with hash 2078302952, now seen corresponding path program 89 times [2021-10-06 21:13:12,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:12,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1119842370] [2021-10-06 21:13:12,799 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:13:12,799 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:12,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:12,800 INFO L229 MonitoredProcess]: Starting monitored process 204 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:12,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (204)] Waiting until timeout for monitored process [2021-10-06 21:13:16,254 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:13:16,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:13:16,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:13:16,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:16,585 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:13:16,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:16,830 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:13:16,830 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:16,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1119842370] [2021-10-06 21:13:16,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1119842370] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:13:16,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:13:16,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-06 21:13:16,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782994364] [2021-10-06 21:13:16,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:13:16,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:16,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:13:16,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:13:16,832 INFO L87 Difference]: Start difference. First operand 846 states and 3309 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:17,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:17,173 INFO L93 Difference]: Finished difference Result 958 states and 3620 transitions. [2021-10-06 21:13:17,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:13:17,174 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:13:17,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:17,176 INFO L225 Difference]: With dead ends: 958 [2021-10-06 21:13:17,176 INFO L226 Difference]: Without dead ends: 958 [2021-10-06 21:13:17,177 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 297.0ms TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:13:17,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2021-10-06 21:13:17,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 838. [2021-10-06 21:13:17,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 3.9080047789725207) internal successors, (3271), 837 states have internal predecessors, (3271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:17,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 3271 transitions. [2021-10-06 21:13:17,192 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 3271 transitions. Word has length 24 [2021-10-06 21:13:17,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:17,192 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 3271 transitions. [2021-10-06 21:13:17,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:17,192 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 3271 transitions. [2021-10-06 21:13:17,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:13:17,194 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:17,194 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:17,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (204)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:17,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 204 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:17,395 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:13:17,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:17,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1458940138, now seen corresponding path program 83 times [2021-10-06 21:13:17,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:17,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105064193] [2021-10-06 21:13:17,397 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:13:17,397 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:17,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:17,398 INFO L229 MonitoredProcess]: Starting monitored process 205 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:17,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (205)] Waiting until timeout for monitored process [2021-10-06 21:13:20,889 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:13:20,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:13:20,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:13:20,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:13:21,189 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:13:21,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:13:21,361 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:13:21,361 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:13:21,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105064193] [2021-10-06 21:13:21,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105064193] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:13:21,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:13:21,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 21:13:21,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760307356] [2021-10-06 21:13:21,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:13:21,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:13:21,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:13:21,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:13:21,364 INFO L87 Difference]: Start difference. First operand 838 states and 3271 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:22,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:13:22,453 INFO L93 Difference]: Finished difference Result 1196 states and 4408 transitions. [2021-10-06 21:13:22,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:13:22,454 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:13:22,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:13:22,457 INFO L225 Difference]: With dead ends: 1196 [2021-10-06 21:13:22,457 INFO L226 Difference]: Without dead ends: 1196 [2021-10-06 21:13:22,457 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 631.8ms TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:13:22,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2021-10-06 21:13:22,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 826. [2021-10-06 21:13:22,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 825 states have (on average 3.9054545454545453) internal successors, (3222), 825 states have internal predecessors, (3222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:22,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 3222 transitions. [2021-10-06 21:13:22,474 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 3222 transitions. Word has length 24 [2021-10-06 21:13:22,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:13:22,474 INFO L470 AbstractCegarLoop]: Abstraction has 826 states and 3222 transitions. [2021-10-06 21:13:22,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:13:22,474 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 3222 transitions. [2021-10-06 21:13:22,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:13:22,475 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:13:22,476 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:13:22,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (205)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:22,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 205 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:13:22,676 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:13:22,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:13:22,677 INFO L82 PathProgramCache]: Analyzing trace with hash 297114622, now seen corresponding path program 84 times [2021-10-06 21:13:22,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:13:22,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226713149] [2021-10-06 21:13:22,678 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:13:22,679 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:13:22,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:13:22,679 INFO L229 MonitoredProcess]: Starting monitored process 206 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:13:22,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (206)] Waiting until timeout for monitored process Received shutdown request... [2021-10-06 21:13:24,999 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (206)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-06 21:13:25,013 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-06 21:13:26,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2021-10-06 21:13:26,200 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (206)] Forcibly destroying the process [2021-10-06 21:13:26,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (206)] Forceful destruction successful, exit code 137 [2021-10-06 21:13:26,208 ERROR L247 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2021-10-06 21:13:26,211 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:13:26,211 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [226713149] and IpTcStrategyModuleCvc4 [2062001573]. [2021-10-06 21:13:26,213 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-06 21:13:26,213 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-06 21:13:26,213 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-06 21:13:26,213 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-06 21:13:26,214 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0REQUIRES_VIOLATION [2021-10-06 21:13:26,214 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1REQUIRES_VIOLATION [2021-10-06 21:13:26,214 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 21:13:26,214 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 21:13:26,214 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 21:13:26,214 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 21:13:26,215 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 21:13:26,215 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 21:13:26,215 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 21:13:26,215 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 21:13:26,215 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-06 21:13:26,215 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-06 21:13:26,215 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-06 21:13:26,216 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-06 21:13:26,216 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-06 21:13:26,216 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-06 21:13:26,216 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:13:26,216 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 21:13:26,216 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 21:13:26,217 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-06 21:13:26,217 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-06 21:13:26,217 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-06 21:13:26,217 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-06 21:13:26,217 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-06 21:13:26,217 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0REQUIRES_VIOLATION [2021-10-06 21:13:26,218 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1REQUIRES_VIOLATION [2021-10-06 21:13:26,225 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 21:13:26,226 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 21:13:26,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 09:13:26 BasicIcfg [2021-10-06 21:13:26,233 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 21:13:26,234 INFO L168 Benchmark]: Toolchain (without parser) took 719731.00 ms. Allocated memory was 155.2 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 129.5 MB in the beginning and 285.2 MB in the end (delta: -155.7 MB). Peak memory consumption was 950.6 MB. Max. memory is 8.0 GB. [2021-10-06 21:13:26,235 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 155.2 MB. Free memory is still 127.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 21:13:26,235 INFO L168 Benchmark]: CACSL2BoogieTranslator took 427.79 ms. Allocated memory is still 155.2 MB. Free memory was 129.1 MB in the beginning and 114.0 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-10-06 21:13:26,235 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.44 ms. Allocated memory is still 155.2 MB. Free memory was 113.8 MB in the beginning and 111.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:13:26,235 INFO L168 Benchmark]: Boogie Preprocessor took 86.32 ms. Allocated memory is still 155.2 MB. Free memory was 111.5 MB in the beginning and 109.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:13:26,238 INFO L168 Benchmark]: RCFGBuilder took 2211.73 ms. Allocated memory is still 155.2 MB. Free memory was 109.4 MB in the beginning and 80.6 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:13:26,239 INFO L168 Benchmark]: TraceAbstraction took 716934.73 ms. Allocated memory was 155.2 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 80.1 MB in the beginning and 285.2 MB in the end (delta: -205.1 MB). Peak memory consumption was 901.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:13:26,240 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 155.2 MB. Free memory is still 127.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 427.79 ms. Allocated memory is still 155.2 MB. Free memory was 129.1 MB in the beginning and 114.0 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 57.44 ms. Allocated memory is still 155.2 MB. Free memory was 113.8 MB in the beginning and 111.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 86.32 ms. Allocated memory is still 155.2 MB. Free memory was 111.5 MB in the beginning and 109.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 2211.73 ms. Allocated memory is still 155.2 MB. Free memory was 109.4 MB in the beginning and 80.6 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 716934.73 ms. Allocated memory was 155.2 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 80.1 MB in the beginning and 285.2 MB in the end (delta: -205.1 MB). Peak memory consumption was 901.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 24013.4ms, 182 PlacesBefore, 55 PlacesAfterwards, 182 TransitionsBefore, 49 TransitionsAfterwards, 2160 CoEnabledTransitionPairs, 8 FixpointIterations, 111 TrivialSequentialCompositions, 51 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 9 ConcurrentYvCompositions, 6 ChoiceCompositions, 183 TotalNumberOfCompositions, 2835 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2639, positive: 2609, positive conditional: 0, positive unconditional: 2609, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1273, positive: 1268, positive conditional: 0, positive unconditional: 1268, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1273, positive: 1268, positive conditional: 0, positive unconditional: 1268, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 510, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 510, negative conditional: 0, negative unconditional: 510, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2639, positive: 1341, positive conditional: 0, positive unconditional: 1341, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 1273, unknown conditional: 0, unknown unconditional: 1273] , Statistics on independence cache: Total cache size (in pairs): 112, Positive cache size: 110, Positive conditional cache size: 0, Positive unconditional cache size: 110, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 156]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [226713149] and IpTcStrategyModuleCvc4 [2062001573]. - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [226713149] and IpTcStrategyModuleCvc4 [2062001573]. - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [226713149] and IpTcStrategyModuleCvc4 [2062001573]. - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [226713149] and IpTcStrategyModuleCvc4 [2062001573]. - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [226713149] and IpTcStrategyModuleCvc4 [2062001573]. - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [226713149] and IpTcStrategyModuleCvc4 [2062001573]. - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [226713149] and IpTcStrategyModuleCvc4 [2062001573]. - TimeoutResultAtElement [Line: 164]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [226713149] and IpTcStrategyModuleCvc4 [2062001573]. - TimeoutResultAtElement [Line: 164]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [226713149] and IpTcStrategyModuleCvc4 [2062001573]. - TimeoutResultAtElement [Line: 148]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [226713149] and IpTcStrategyModuleCvc4 [2062001573]. - TimeoutResultAtElement [Line: 148]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [226713149] and IpTcStrategyModuleCvc4 [2062001573]. - TimeoutResultAtElement [Line: 149]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [226713149] and IpTcStrategyModuleCvc4 [2062001573]. - TimeoutResultAtElement [Line: 149]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [226713149] and IpTcStrategyModuleCvc4 [2062001573]. - TimeoutResultAtElement [Line: 150]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [226713149] and IpTcStrategyModuleCvc4 [2062001573]. - TimeoutResultAtElement [Line: 150]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [226713149] and IpTcStrategyModuleCvc4 [2062001573]. - TimeoutResultAtElement [Line: 151]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [226713149] and IpTcStrategyModuleCvc4 [2062001573]. - TimeoutResultAtElement [Line: 151]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [226713149] and IpTcStrategyModuleCvc4 [2062001573]. - TimeoutResultAtElement [Line: 152]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [226713149] and IpTcStrategyModuleCvc4 [2062001573]. - TimeoutResultAtElement [Line: 152]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [226713149] and IpTcStrategyModuleCvc4 [2062001573]. - TimeoutResultAtElement [Line: 153]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [226713149] and IpTcStrategyModuleCvc4 [2062001573]. - TimeoutResultAtElement [Line: 153]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [226713149] and IpTcStrategyModuleCvc4 [2062001573]. - TimeoutResultAtElement [Line: 126]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [226713149] and IpTcStrategyModuleCvc4 [2062001573]. - TimeoutResultAtElement [Line: 150]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [226713149] and IpTcStrategyModuleCvc4 [2062001573]. - TimeoutResultAtElement [Line: 148]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [226713149] and IpTcStrategyModuleCvc4 [2062001573]. - TimeoutResultAtElement [Line: 149]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 25 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [226713149] and IpTcStrategyModuleCvc4 [2062001573]. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 209 locations, 31 error locations. Started 1 CEGAR loops. OverallTime: 716772.3ms, OverallIterations: 205, TraceHistogramMax: 3, EmptinessCheckTime: 429.3ms, AutomataDifference: 118210.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 24116.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 8770 SDtfs, 16511 SDslu, 24847 SDs, 0 SdLazy, 25229 SolverSat, 892 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 56646.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9543 GetRequests, 6810 SyntacticMatches, 2 SemanticMatches, 2731 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2016 ImplicationChecksByTransitivity, 94565.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=896occurred in iteration=84, InterpolantAutomatonStates: 1577, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 4230.5ms AutomataMinimizationTime, 204 MinimizatonAttempts, 62577 StatesRemovedByMinimization, 194 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2878.6ms SsaConstructionTime, 54620.0ms SatisfiabilityAnalysisTime, 153689.6ms InterpolantComputationTime, 4532 NumberOfCodeBlocks, 4485 NumberOfCodeBlocksAsserted, 380 NumberOfCheckSat, 8656 ConstructedInterpolants, 28 QuantifiedInterpolants, 56094 SizeOfPredicates, 2876 NumberOfNonLiveVariables, 28963 ConjunctsInSsa, 2744 ConjunctsInUnsatCore, 408 InterpolantComputations, 284 PerfectInterpolantSequences, 2614/2798 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown