/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/popl20-more-inc-subseq.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 17:42:18,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 17:42:18,948 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 17:42:19,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 17:42:19,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 17:42:19,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 17:42:19,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 17:42:19,115 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-08 17:42:19,163 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 17:42:19,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 17:42:19,164 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 17:42:19,164 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 17:42:19,168 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 17:42:19,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 17:42:19,168 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 17:42:19,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 17:42:19,169 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 17:42:19,169 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 17:42:19,170 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 17:42:19,170 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 17:42:19,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 17:42:19,171 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-08 17:42:19,171 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-08 17:42:19,171 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-08 17:42:19,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 17:42:19,172 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-08 17:42:19,172 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-08 17:42:19,172 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-08 17:42:19,172 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 17:42:19,172 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 17:42:19,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 17:42:19,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 17:42:19,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 17:42:19,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 17:42:19,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 17:42:19,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 17:42:19,174 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-08 17:42:19,174 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-08 17:42:19,174 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 17:42:19,175 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-08 17:42:19,175 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 17:42:19,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 17:42:19,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 17:42:19,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 17:42:19,645 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 17:42:19,646 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 17:42:19,647 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c [2021-10-08 17:42:19,734 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2180df9e/d36fe95b212643baaca614e6723c3cba/FLAGc63277e6d [2021-10-08 17:42:20,478 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 17:42:20,479 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c [2021-10-08 17:42:20,495 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2180df9e/d36fe95b212643baaca614e6723c3cba/FLAGc63277e6d [2021-10-08 17:42:20,830 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2180df9e/d36fe95b212643baaca614e6723c3cba [2021-10-08 17:42:20,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 17:42:20,843 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-08 17:42:20,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 17:42:20,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 17:42:20,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 17:42:20,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 05:42:20" (1/1) ... [2021-10-08 17:42:20,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@171f0476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:42:20, skipping insertion in model container [2021-10-08 17:42:20,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 05:42:20" (1/1) ... [2021-10-08 17:42:20,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 17:42:20,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 17:42:21,091 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/popl20-more-inc-subseq.wvr.c[2742,2755] [2021-10-08 17:42:21,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 17:42:21,120 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-08 17:42:21,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 17:42:21,148 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/popl20-more-inc-subseq.wvr.c[2742,2755] [2021-10-08 17:42:21,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 17:42:21,162 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 17:42:21,190 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/popl20-more-inc-subseq.wvr.c[2742,2755] [2021-10-08 17:42:21,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 17:42:21,215 INFO L208 MainTranslator]: Completed translation [2021-10-08 17:42:21,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:42:21 WrapperNode [2021-10-08 17:42:21,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 17:42:21,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 17:42:21,217 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 17:42:21,217 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 17:42:21,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:42:21" (1/1) ... [2021-10-08 17:42:21,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:42:21" (1/1) ... [2021-10-08 17:42:21,290 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 17:42:21,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 17:42:21,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 17:42:21,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 17:42:21,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:42:21" (1/1) ... [2021-10-08 17:42:21,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:42:21" (1/1) ... [2021-10-08 17:42:21,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:42:21" (1/1) ... [2021-10-08 17:42:21,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:42:21" (1/1) ... [2021-10-08 17:42:21,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:42:21" (1/1) ... [2021-10-08 17:42:21,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:42:21" (1/1) ... [2021-10-08 17:42:21,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:42:21" (1/1) ... [2021-10-08 17:42:21,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 17:42:21,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 17:42:21,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 17:42:21,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 17:42:21,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:42:21" (1/1) ... [2021-10-08 17:42:21,346 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 17:42:21,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 17:42:21,392 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) [2021-10-08 17:42:21,396 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 [2021-10-08 17:42:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 17:42:21,459 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 17:42:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 17:42:21,459 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 17:42:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-08 17:42:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 17:42:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-08 17:42:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-08 17:42:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-08 17:42:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-08 17:42:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 17:42:21,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 17:42:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 17:42:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-08 17:42:21,463 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 17:42:22,990 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 17:42:22,991 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-08 17:42:22,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 05:42:22 BoogieIcfgContainer [2021-10-08 17:42:22,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 17:42:22,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 17:42:22,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 17:42:23,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 17:42:23,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 05:42:20" (1/3) ... [2021-10-08 17:42:23,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47b7c222 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 05:42:23, skipping insertion in model container [2021-10-08 17:42:23,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:42:21" (2/3) ... [2021-10-08 17:42:23,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47b7c222 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 05:42:23, skipping insertion in model container [2021-10-08 17:42:23,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 05:42:22" (3/3) ... [2021-10-08 17:42:23,003 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-inc-subseq.wvr.c [2021-10-08 17:42:23,010 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 17:42:23,010 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2021-10-08 17:42:23,010 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 17:42:23,047 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,047 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,047 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,047 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,048 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,048 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,048 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,049 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,049 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,049 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,049 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,049 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,050 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,050 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,050 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,050 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,050 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,051 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,051 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,051 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,051 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,051 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,052 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,052 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,052 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,052 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,053 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,053 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,053 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,053 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,054 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,054 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,054 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,054 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,055 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,055 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,055 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,055 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,055 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,056 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,056 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,056 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,056 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,056 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,057 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,057 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,057 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,057 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,058 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,058 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,058 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,058 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,059 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,059 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,059 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,059 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,060 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,060 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,060 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,060 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,060 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,061 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,061 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,061 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,061 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,062 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,062 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,062 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,062 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,062 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,063 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,063 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,067 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,067 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,067 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,068 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,068 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,068 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,071 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,071 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,071 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,071 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,071 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,072 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,072 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,072 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,072 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,072 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:42:23,077 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-08 17:42:23,127 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 17:42:23,135 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 [2021-10-08 17:42:23,136 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-10-08 17:42:23,157 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 17:42:23,170 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 182 places, 190 transitions, 396 flow [2021-10-08 17:42:23,174 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 182 places, 190 transitions, 396 flow [2021-10-08 17:42:23,176 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 182 places, 190 transitions, 396 flow [2021-10-08 17:42:23,268 INFO L129 PetriNetUnfolder]: 15/188 cut-off events. [2021-10-08 17:42:23,268 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-08 17:42:23,277 INFO L84 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 188 events. 15/188 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 213 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 149. Up to 2 conditions per place. [2021-10-08 17:42:23,284 INFO L116 LiptonReduction]: Number of co-enabled transitions 1258 [2021-10-08 17:42:54,868 INFO L131 LiptonReduction]: Checked pairs total: 3246 [2021-10-08 17:42:54,869 INFO L133 LiptonReduction]: Total number of compositions: 208 [2021-10-08 17:42:54,882 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 53 places, 51 transitions, 118 flow [2021-10-08 17:42:54,944 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 371 states, 257 states have (on average 3.747081712062257) internal successors, (963), 370 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:42:54,951 INFO L276 IsEmpty]: Start isEmpty. Operand has 371 states, 257 states have (on average 3.747081712062257) internal successors, (963), 370 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:42:54,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 17:42:54,963 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:42:54,964 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 17:42:54,965 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 17:42:54,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:42:54,972 INFO L82 PathProgramCache]: Analyzing trace with hash 25447, now seen corresponding path program 1 times [2021-10-08 17:42:54,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:42:54,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517867657] [2021-10-08 17:42:54,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:42:54,988 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:42:54,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:42:54,991 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) [2021-10-08 17:42:55,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-08 17:42:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:42:55,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 17:42:55,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:42:55,236 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-08 17:42:55,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-08 17:42:55,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:42:55,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:42:55,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:42:55,314 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:42:55,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517867657] [2021-10-08 17:42:55,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [517867657] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:42:55,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:42:55,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 17:42:55,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171283628] [2021-10-08 17:42:55,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 17:42:55,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:42:55,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 17:42:55,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:42:55,375 INFO L87 Difference]: Start difference. First operand has 371 states, 257 states have (on average 3.747081712062257) internal successors, (963), 370 states have internal predecessors, (963), 0 states have call successors, (0), 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 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) [2021-10-08 17:42:55,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:42:55,671 INFO L93 Difference]: Finished difference Result 319 states and 833 transitions. [2021-10-08 17:42:55,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:42:55,673 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 [2021-10-08 17:42:55,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:42:55,701 INFO L225 Difference]: With dead ends: 319 [2021-10-08 17:42:55,701 INFO L226 Difference]: Without dead ends: 319 [2021-10-08 17:42:55,702 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:42:55,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-10-08 17:42:55,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2021-10-08 17:42:55,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 231 states have (on average 3.606060606060606) internal successors, (833), 318 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:42:55,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 833 transitions. [2021-10-08 17:42:55,837 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 833 transitions. Word has length 2 [2021-10-08 17:42:55,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:42:55,838 INFO L470 AbstractCegarLoop]: Abstraction has 319 states and 833 transitions. [2021-10-08 17:42:55,838 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) [2021-10-08 17:42:55,839 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 833 transitions. [2021-10-08 17:42:55,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 17:42:55,839 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:42:55,839 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 17:42:55,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-08 17:42:56,053 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 [2021-10-08 17:42:56,053 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 17:42:56,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:42:56,057 INFO L82 PathProgramCache]: Analyzing trace with hash 25448, now seen corresponding path program 1 times [2021-10-08 17:42:56,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:42:56,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1153060994] [2021-10-08 17:42:56,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:42:56,059 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:42:56,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:42:56,065 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) [2021-10-08 17:42:56,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-08 17:42:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:42:56,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:42:56,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:42:56,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:42:56,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:42:56,406 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-08 17:42:56,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-08 17:42:56,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:42:56,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:42:56,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:42:56,643 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:42:56,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1153060994] [2021-10-08 17:42:56,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1153060994] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:42:56,645 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:42:56,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:42:56,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751945872] [2021-10-08 17:42:56,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:42:56,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:42:56,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:42:56,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:42:56,653 INFO L87 Difference]: Start difference. First operand 319 states and 833 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) [2021-10-08 17:42:57,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:42:57,377 INFO L93 Difference]: Finished difference Result 324 states and 844 transitions. [2021-10-08 17:42:57,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:42:57,379 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 [2021-10-08 17:42:57,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:42:57,386 INFO L225 Difference]: With dead ends: 324 [2021-10-08 17:42:57,386 INFO L226 Difference]: Without dead ends: 324 [2021-10-08 17:42:57,387 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 78.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:42:57,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-10-08 17:42:57,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 323. [2021-10-08 17:42:57,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 235 states have (on average 3.5914893617021275) internal successors, (844), 322 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:42:57,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 844 transitions. [2021-10-08 17:42:57,437 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 844 transitions. Word has length 2 [2021-10-08 17:42:57,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:42:57,437 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 844 transitions. [2021-10-08 17:42:57,438 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) [2021-10-08 17:42:57,438 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 844 transitions. [2021-10-08 17:42:57,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 17:42:57,438 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:42:57,439 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 17:42:57,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-08 17:42:57,639 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 [2021-10-08 17:42:57,640 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 17:42:57,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:42:57,641 INFO L82 PathProgramCache]: Analyzing trace with hash 794295, now seen corresponding path program 1 times [2021-10-08 17:42:57,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:42:57,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623349601] [2021-10-08 17:42:57,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:42:57,644 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:42:57,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:42:57,645 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) [2021-10-08 17:42:57,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-08 17:42:57,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:42:57,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 17:42:57,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:42:57,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-08 17:42:57,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:42:57,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:42:57,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:42:57,850 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:42:57,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623349601] [2021-10-08 17:42:57,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623349601] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:42:57,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:42:57,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-08 17:42:57,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332460293] [2021-10-08 17:42:57,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:42:57,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:42:57,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:42:57,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:42:57,853 INFO L87 Difference]: Start difference. First operand 323 states and 844 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:42:58,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:42:58,136 INFO L93 Difference]: Finished difference Result 322 states and 841 transitions. [2021-10-08 17:42:58,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:42:58,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 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 3 [2021-10-08 17:42:58,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:42:58,140 INFO L225 Difference]: With dead ends: 322 [2021-10-08 17:42:58,140 INFO L226 Difference]: Without dead ends: 322 [2021-10-08 17:42:58,141 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:42:58,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-10-08 17:42:58,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2021-10-08 17:42:58,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 235 states have (on average 3.578723404255319) internal successors, (841), 321 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:42:58,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 841 transitions. [2021-10-08 17:42:58,174 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 841 transitions. Word has length 3 [2021-10-08 17:42:58,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:42:58,174 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 841 transitions. [2021-10-08 17:42:58,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:42:58,175 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 841 transitions. [2021-10-08 17:42:58,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 17:42:58,175 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:42:58,175 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-08 17:42:58,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-08 17:42:58,387 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 [2021-10-08 17:42:58,388 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 17:42:58,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:42:58,390 INFO L82 PathProgramCache]: Analyzing trace with hash 24600264, now seen corresponding path program 1 times [2021-10-08 17:42:58,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:42:58,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1430257235] [2021-10-08 17:42:58,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:42:58,392 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:42:58,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:42:58,393 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) [2021-10-08 17:42:58,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-08 17:42:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:42:58,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 17:42:58,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:42:58,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:42:58,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:42:58,685 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-08 17:42:58,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-08 17:42:58,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:42:58,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:42:59,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:42:59,538 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:42:59,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1430257235] [2021-10-08 17:42:59,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1430257235] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:42:59,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:42:59,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 17:42:59,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497373789] [2021-10-08 17:42:59,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 17:42:59,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:42:59,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 17:42:59,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:42:59,540 INFO L87 Difference]: Start difference. First operand 322 states and 841 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) [2021-10-08 17:43:06,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:43:06,265 INFO L93 Difference]: Finished difference Result 1269 states and 3334 transitions. [2021-10-08 17:43:06,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 17:43:06,271 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 [2021-10-08 17:43:06,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:43:06,282 INFO L225 Difference]: With dead ends: 1269 [2021-10-08 17:43:06,282 INFO L226 Difference]: Without dead ends: 1269 [2021-10-08 17:43:06,283 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1005.2ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-08 17:43:06,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2021-10-08 17:43:06,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 330. [2021-10-08 17:43:06,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 243 states have (on average 3.5596707818930042) internal successors, (865), 329 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:43:06,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 865 transitions. [2021-10-08 17:43:06,308 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 865 transitions. Word has length 4 [2021-10-08 17:43:06,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:43:06,309 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 865 transitions. [2021-10-08 17:43:06,309 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) [2021-10-08 17:43:06,309 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 865 transitions. [2021-10-08 17:43:06,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 17:43:06,310 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:43:06,310 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-08 17:43:06,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-08 17:43:06,526 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 [2021-10-08 17:43:06,526 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 17:43:06,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:43:06,528 INFO L82 PathProgramCache]: Analyzing trace with hash 24622886, now seen corresponding path program 1 times [2021-10-08 17:43:06,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:43:06,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875338898] [2021-10-08 17:43:06,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:43:06,530 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:43:06,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:43:06,531 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) [2021-10-08 17:43:06,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-08 17:43:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:43:06,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 17:43:06,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:43:06,865 INFO L354 Elim1Store]: treesize reduction 145, result has 24.9 percent of original size [2021-10-08 17:43:06,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 70 [2021-10-08 17:43:06,879 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 71 treesize of output 69 [2021-10-08 17:43:07,126 INFO L354 Elim1Store]: treesize reduction 32, result has 37.3 percent of original size [2021-10-08 17:43:07,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 40 [2021-10-08 17:43:08,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:43:08,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:43:13,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:43:13,300 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:43:13,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875338898] [2021-10-08 17:43:13,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875338898] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:43:13,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:43:13,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2021-10-08 17:43:13,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253248542] [2021-10-08 17:43:13,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 17:43:13,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:43:13,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 17:43:13,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=30, Unknown=2, NotChecked=0, Total=56 [2021-10-08 17:43:13,303 INFO L87 Difference]: Start difference. First operand 330 states and 865 transitions. Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 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) [2021-10-08 17:43:13,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:43:13,755 INFO L93 Difference]: Finished difference Result 269 states and 674 transitions. [2021-10-08 17:43:13,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 17:43:13,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 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 4 [2021-10-08 17:43:13,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:43:13,759 INFO L225 Difference]: With dead ends: 269 [2021-10-08 17:43:13,759 INFO L226 Difference]: Without dead ends: 269 [2021-10-08 17:43:13,760 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 5295.0ms TimeCoverageRelationStatistics Valid=24, Invalid=30, Unknown=2, NotChecked=0, Total=56 [2021-10-08 17:43:13,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-10-08 17:43:13,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2021-10-08 17:43:13,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 204 states have (on average 3.303921568627451) internal successors, (674), 268 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:43:13,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 674 transitions. [2021-10-08 17:43:13,772 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 674 transitions. Word has length 4 [2021-10-08 17:43:13,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:43:13,772 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 674 transitions. [2021-10-08 17:43:13,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 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) [2021-10-08 17:43:13,773 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 674 transitions. [2021-10-08 17:43:13,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 17:43:13,773 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:43:13,773 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-08 17:43:13,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-08 17:43:13,986 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 [2021-10-08 17:43:13,987 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 17:43:13,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:43:13,989 INFO L82 PathProgramCache]: Analyzing trace with hash 24622888, now seen corresponding path program 1 times [2021-10-08 17:43:13,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:43:13,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [849868474] [2021-10-08 17:43:13,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:43:13,990 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:43:13,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:43:13,991 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) [2021-10-08 17:43:13,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-08 17:43:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:43:14,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:43:14,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:43:14,184 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-08 17:43:14,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 33 [2021-10-08 17:43:14,308 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-10-08 17:43:14,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 43 [2021-10-08 17:43:14,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:43:14,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:43:14,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:43:14,596 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:43:14,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [849868474] [2021-10-08 17:43:14,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [849868474] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:43:14,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:43:14,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-08 17:43:14,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150280038] [2021-10-08 17:43:14,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 17:43:14,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:43:14,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 17:43:14,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:43:14,601 INFO L87 Difference]: Start difference. First operand 269 states and 674 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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) [2021-10-08 17:43:14,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:43:14,860 INFO L93 Difference]: Finished difference Result 208 states and 483 transitions. [2021-10-08 17:43:14,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:43:14,861 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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 [2021-10-08 17:43:14,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:43:14,864 INFO L225 Difference]: With dead ends: 208 [2021-10-08 17:43:14,864 INFO L226 Difference]: Without dead ends: 208 [2021-10-08 17:43:14,865 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 111.0ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:43:14,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-08 17:43:14,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2021-10-08 17:43:14,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 165 states have (on average 2.9272727272727272) internal successors, (483), 207 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:43:14,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 483 transitions. [2021-10-08 17:43:14,871 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 483 transitions. Word has length 4 [2021-10-08 17:43:14,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:43:14,872 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 483 transitions. [2021-10-08 17:43:14,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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) [2021-10-08 17:43:14,872 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 483 transitions. [2021-10-08 17:43:14,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 17:43:14,873 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:43:14,873 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-08 17:43:14,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-08 17:43:15,086 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 [2021-10-08 17:43:15,087 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 17:43:15,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:43:15,088 INFO L82 PathProgramCache]: Analyzing trace with hash -2107191431, now seen corresponding path program 1 times [2021-10-08 17:43:15,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:43:15,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532198351] [2021-10-08 17:43:15,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:43:15,090 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:43:15,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:43:15,091 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) [2021-10-08 17:43:15,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-08 17:43:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:43:15,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 17:43:15,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:43:15,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:43:15,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:43:15,376 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 32 treesize of output 28 [2021-10-08 17:43:15,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:43:15,562 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:43:15,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [532198351] [2021-10-08 17:43:15,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [532198351] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:43:15,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:43:15,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-08 17:43:15,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340350455] [2021-10-08 17:43:15,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 17:43:15,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:43:15,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 17:43:15,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:43:15,565 INFO L87 Difference]: Start difference. First operand 208 states and 483 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) [2021-10-08 17:43:16,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:43:16,374 INFO L93 Difference]: Finished difference Result 356 states and 836 transitions. [2021-10-08 17:43:16,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 17:43:16,375 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 6 [2021-10-08 17:43:16,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:43:16,379 INFO L225 Difference]: With dead ends: 356 [2021-10-08 17:43:16,379 INFO L226 Difference]: Without dead ends: 356 [2021-10-08 17:43:16,380 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 189.0ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-08 17:43:16,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-10-08 17:43:16,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 208. [2021-10-08 17:43:16,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 170 states have (on average 3.2529411764705882) internal successors, (553), 207 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:43:16,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 553 transitions. [2021-10-08 17:43:16,389 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 553 transitions. Word has length 6 [2021-10-08 17:43:16,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:43:16,390 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 553 transitions. [2021-10-08 17:43:16,391 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) [2021-10-08 17:43:16,391 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 553 transitions. [2021-10-08 17:43:16,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 17:43:16,391 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:43:16,391 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-08 17:43:16,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-08 17:43:16,601 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 [2021-10-08 17:43:16,602 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 17:43:16,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:43:16,603 INFO L82 PathProgramCache]: Analyzing trace with hash -2107191430, now seen corresponding path program 1 times [2021-10-08 17:43:16,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:43:16,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078033907] [2021-10-08 17:43:16,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:43:16,605 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:43:16,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:43:16,606 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) [2021-10-08 17:43:16,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-08 17:43:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:43:16,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 17:43:16,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:43:16,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:43:16,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:43:16,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:43:16,751 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:43:16,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078033907] [2021-10-08 17:43:16,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2078033907] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:43:16,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:43:16,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-08 17:43:16,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990621817] [2021-10-08 17:43:16,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 17:43:16,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:43:16,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 17:43:16,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:43:16,754 INFO L87 Difference]: Start difference. First operand 208 states and 553 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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) [2021-10-08 17:43:16,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:43:16,912 INFO L93 Difference]: Finished difference Result 180 states and 473 transitions. [2021-10-08 17:43:16,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:43:16,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 6 [2021-10-08 17:43:16,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:43:16,914 INFO L225 Difference]: With dead ends: 180 [2021-10-08 17:43:16,915 INFO L226 Difference]: Without dead ends: 180 [2021-10-08 17:43:16,915 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:43:16,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-08 17:43:16,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-10-08 17:43:16,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 152 states have (on average 3.111842105263158) internal successors, (473), 179 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:43:16,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 473 transitions. [2021-10-08 17:43:16,922 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 473 transitions. Word has length 6 [2021-10-08 17:43:16,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:43:16,923 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 473 transitions. [2021-10-08 17:43:16,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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) [2021-10-08 17:43:16,923 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 473 transitions. [2021-10-08 17:43:16,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 17:43:16,924 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:43:16,924 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-08 17:43:16,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-08 17:43:17,135 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 [2021-10-08 17:43:17,137 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 17:43:17,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:43:17,138 INFO L82 PathProgramCache]: Analyzing trace with hash -2107191281, now seen corresponding path program 1 times [2021-10-08 17:43:17,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:43:17,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446926923] [2021-10-08 17:43:17,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:43:17,140 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:43:17,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:43:17,142 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) [2021-10-08 17:43:17,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-08 17:43:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:43:17,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 17:43:17,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:43:17,449 INFO L354 Elim1Store]: treesize reduction 149, result has 22.8 percent of original size [2021-10-08 17:43:17,450 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 4 case distinctions, treesize of input 34 treesize of output 64 [2021-10-08 17:43:17,457 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 66 treesize of output 64 [2021-10-08 17:43:18,048 INFO L354 Elim1Store]: treesize reduction 60, result has 31.8 percent of original size [2021-10-08 17:43:18,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 54 [2021-10-08 17:43:21,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:43:21,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:43:21,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:43:21,546 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:43:21,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446926923] [2021-10-08 17:43:21,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446926923] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:43:21,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:43:21,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 7 [2021-10-08 17:43:21,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178997478] [2021-10-08 17:43:21,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 17:43:21,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:43:21,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 17:43:21,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-08 17:43:21,548 INFO L87 Difference]: Start difference. First operand 180 states and 473 transitions. Second operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 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) [2021-10-08 17:43:24,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:43:24,762 INFO L93 Difference]: Finished difference Result 313 states and 846 transitions. [2021-10-08 17:43:24,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 17:43:24,764 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 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 6 [2021-10-08 17:43:24,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:43:24,767 INFO L225 Difference]: With dead ends: 313 [2021-10-08 17:43:24,767 INFO L226 Difference]: Without dead ends: 313 [2021-10-08 17:43:24,768 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 934.8ms TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2021-10-08 17:43:24,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-10-08 17:43:24,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 165. [2021-10-08 17:43:24,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 144 states have (on average 3.0416666666666665) internal successors, (438), 164 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:43:24,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 438 transitions. [2021-10-08 17:43:24,776 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 438 transitions. Word has length 6 [2021-10-08 17:43:24,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:43:24,777 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 438 transitions. [2021-10-08 17:43:24,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 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) [2021-10-08 17:43:24,777 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 438 transitions. [2021-10-08 17:43:24,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 17:43:24,777 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:43:24,778 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-08 17:43:24,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-08 17:43:24,993 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 [2021-10-08 17:43:24,993 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 17:43:24,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:43:24,994 INFO L82 PathProgramCache]: Analyzing trace with hash -2107191280, now seen corresponding path program 1 times [2021-10-08 17:43:24,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:43:24,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212112767] [2021-10-08 17:43:24,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:43:24,995 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:43:24,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:43:24,997 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) [2021-10-08 17:43:25,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-08 17:43:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:43:25,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:43:25,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:43:25,183 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-08 17:43:25,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 35 [2021-10-08 17:43:25,289 INFO L354 Elim1Store]: treesize reduction 57, result has 30.5 percent of original size [2021-10-08 17:43:25,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 56 [2021-10-08 17:43:25,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:43:25,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:43:25,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:43:25,537 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:43:25,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212112767] [2021-10-08 17:43:25,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [212112767] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:43:25,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:43:25,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:43:25,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291408079] [2021-10-08 17:43:25,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:43:25,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:43:25,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:43:25,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:43:25,539 INFO L87 Difference]: Start difference. First operand 165 states and 438 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2021-10-08 17:43:25,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:43:25,749 INFO L93 Difference]: Finished difference Result 150 states and 403 transitions. [2021-10-08 17:43:25,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:43:25,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 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 6 [2021-10-08 17:43:25,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:43:25,751 INFO L225 Difference]: With dead ends: 150 [2021-10-08 17:43:25,751 INFO L226 Difference]: Without dead ends: 150 [2021-10-08 17:43:25,752 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:43:25,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-08 17:43:25,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2021-10-08 17:43:25,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 136 states have (on average 2.963235294117647) internal successors, (403), 149 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:43:25,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 403 transitions. [2021-10-08 17:43:25,761 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 403 transitions. Word has length 6 [2021-10-08 17:43:25,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:43:25,762 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 403 transitions. [2021-10-08 17:43:25,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2021-10-08 17:43:25,762 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 403 transitions. [2021-10-08 17:43:25,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 17:43:25,764 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:43:25,764 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-08 17:43:25,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-08 17:43:25,976 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 [2021-10-08 17:43:25,977 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 17:43:25,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:43:25,978 INFO L82 PathProgramCache]: Analyzing trace with hash -2107191294, now seen corresponding path program 1 times [2021-10-08 17:43:25,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:43:25,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130786197] [2021-10-08 17:43:25,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:43:25,979 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:43:25,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:43:25,981 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) [2021-10-08 17:43:25,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-08 17:43:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:43:26,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 17:43:26,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:43:26,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:43:26,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:43:26,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:43:26,228 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:43:26,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130786197] [2021-10-08 17:43:26,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130786197] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:43:26,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:43:26,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-08 17:43:26,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621011567] [2021-10-08 17:43:26,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 17:43:26,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:43:26,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 17:43:26,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:43:26,230 INFO L87 Difference]: Start difference. First operand 150 states and 403 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2021-10-08 17:43:26,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:43:26,439 INFO L93 Difference]: Finished difference Result 215 states and 548 transitions. [2021-10-08 17:43:26,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 17:43:26,442 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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 6 [2021-10-08 17:43:26,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:43:26,444 INFO L225 Difference]: With dead ends: 215 [2021-10-08 17:43:26,445 INFO L226 Difference]: Without dead ends: 203 [2021-10-08 17:43:26,445 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.3ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:43:26,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-10-08 17:43:26,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 194. [2021-10-08 17:43:26,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 179 states have (on average 2.8268156424581004) internal successors, (506), 193 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:43:26,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 506 transitions. [2021-10-08 17:43:26,457 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 506 transitions. Word has length 6 [2021-10-08 17:43:26,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:43:26,457 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 506 transitions. [2021-10-08 17:43:26,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2021-10-08 17:43:26,457 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 506 transitions. [2021-10-08 17:43:26,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 17:43:26,459 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:43:26,459 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:43:26,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-08 17:43:26,672 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 [2021-10-08 17:43:26,672 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 17:43:26,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:43:26,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1546837411, now seen corresponding path program 1 times [2021-10-08 17:43:26,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:43:26,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937409571] [2021-10-08 17:43:26,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:43:26,675 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:43:26,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:43:26,676 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) [2021-10-08 17:43:26,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-08 17:43:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:43:26,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 17:43:26,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:43:26,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:43:26,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:43:27,043 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-08 17:43:27,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 71 [2021-10-08 17:43:27,093 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-08 17:43:27,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 80 [2021-10-08 17:43:27,277 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-08 17:43:27,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-10-08 17:43:27,290 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 17:43:27,290 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 31 treesize of output 31 [2021-10-08 17:43:29,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:43:29,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:43:31,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:43:31,161 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:43:31,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937409571] [2021-10-08 17:43:31,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1937409571] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:43:31,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:43:31,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 17:43:31,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719725028] [2021-10-08 17:43:31,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 17:43:31,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:43:31,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 17:43:31,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:43:31,163 INFO L87 Difference]: Start difference. First operand 194 states and 506 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2021-10-08 17:43:48,718 WARN L207 SmtUtils]: Spent 5.28 s on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2021-10-08 17:43:51,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:43:51,198 INFO L93 Difference]: Finished difference Result 412 states and 1084 transitions. [2021-10-08 17:43:51,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 17:43:51,199 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 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 7 [2021-10-08 17:43:51,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:43:51,203 INFO L225 Difference]: With dead ends: 412 [2021-10-08 17:43:51,203 INFO L226 Difference]: Without dead ends: 412 [2021-10-08 17:43:51,204 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 15310.2ms TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-10-08 17:43:51,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-10-08 17:43:51,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 284. [2021-10-08 17:43:51,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 269 states have (on average 2.9107806691449816) internal successors, (783), 283 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:43:51,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 783 transitions. [2021-10-08 17:43:51,217 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 783 transitions. Word has length 7 [2021-10-08 17:43:51,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:43:51,217 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 783 transitions. [2021-10-08 17:43:51,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2021-10-08 17:43:51,217 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 783 transitions. [2021-10-08 17:43:51,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 17:43:51,218 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:43:51,218 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:43:51,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-08 17:43:51,431 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 [2021-10-08 17:43:51,431 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 17:43:51,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:43:51,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1546837410, now seen corresponding path program 1 times [2021-10-08 17:43:51,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:43:51,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11976098] [2021-10-08 17:43:51,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:43:51,434 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:43:51,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:43:51,435 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) [2021-10-08 17:43:51,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-08 17:43:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:43:51,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 17:43:51,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:43:51,785 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-08 17:43:51,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-08 17:43:51,859 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-08 17:43:51,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-10-08 17:43:51,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:43:51,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:43:54,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:43:54,042 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:43:54,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11976098] [2021-10-08 17:43:54,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [11976098] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:43:54,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:43:54,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-08 17:43:54,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308556569] [2021-10-08 17:43:54,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 17:43:54,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:43:54,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 17:43:54,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=18, Unknown=1, NotChecked=0, Total=30 [2021-10-08 17:43:54,045 INFO L87 Difference]: Start difference. First operand 284 states and 783 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-10-08 17:43:54,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:43:54,308 INFO L93 Difference]: Finished difference Result 234 states and 607 transitions. [2021-10-08 17:43:54,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:43:54,309 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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 7 [2021-10-08 17:43:54,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:43:54,311 INFO L225 Difference]: With dead ends: 234 [2021-10-08 17:43:54,311 INFO L226 Difference]: Without dead ends: 234 [2021-10-08 17:43:54,311 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2100.8ms TimeCoverageRelationStatistics Valid=17, Invalid=24, Unknown=1, NotChecked=0, Total=42 [2021-10-08 17:43:54,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-10-08 17:43:54,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-10-08 17:43:54,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 225 states have (on average 2.6977777777777776) internal successors, (607), 233 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:43:54,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 607 transitions. [2021-10-08 17:43:54,322 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 607 transitions. Word has length 7 [2021-10-08 17:43:54,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:43:54,322 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 607 transitions. [2021-10-08 17:43:54,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-10-08 17:43:54,323 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 607 transitions. [2021-10-08 17:43:54,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 17:43:54,324 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:43:54,324 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1] [2021-10-08 17:43:54,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-08 17:43:54,538 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 [2021-10-08 17:43:54,539 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 17:43:54,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:43:54,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1377350264, now seen corresponding path program 2 times [2021-10-08 17:43:54,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:43:54,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1097782968] [2021-10-08 17:43:54,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:43:54,542 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:43:54,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:43:54,543 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) [2021-10-08 17:43:54,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-08 17:43:54,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:43:54,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:43:54,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 17:43:54,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:43:54,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:43:54,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:43:54,940 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-08 17:43:54,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-08 17:43:55,439 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:43:55,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:43:57,395 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:43:57,395 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:43:57,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1097782968] [2021-10-08 17:43:57,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1097782968] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:43:57,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:43:57,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 17:43:57,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371850737] [2021-10-08 17:43:57,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:43:57,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:43:57,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:43:57,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:43:57,397 INFO L87 Difference]: Start difference. First operand 234 states and 607 transitions. Second operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 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) [2021-10-08 17:44:18,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:44:18,260 INFO L93 Difference]: Finished difference Result 1669 states and 4478 transitions. [2021-10-08 17:44:18,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 17:44:18,263 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 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 8 [2021-10-08 17:44:18,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:44:18,276 INFO L225 Difference]: With dead ends: 1669 [2021-10-08 17:44:18,276 INFO L226 Difference]: Without dead ends: 1669 [2021-10-08 17:44:18,277 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 6703.6ms TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:44:18,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2021-10-08 17:44:18,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 248. [2021-10-08 17:44:18,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 239 states have (on average 2.6569037656903767) internal successors, (635), 247 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:44:18,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 635 transitions. [2021-10-08 17:44:18,301 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 635 transitions. Word has length 8 [2021-10-08 17:44:18,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:44:18,301 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 635 transitions. [2021-10-08 17:44:18,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 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) [2021-10-08 17:44:18,302 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 635 transitions. [2021-10-08 17:44:18,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 17:44:18,303 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:44:18,303 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:44:18,318 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-10-08 17:44:18,515 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 [2021-10-08 17:44:18,515 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 17:44:18,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:44:18,516 INFO L82 PathProgramCache]: Analyzing trace with hash -2081268780, now seen corresponding path program 1 times [2021-10-08 17:44:18,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:44:18,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477880682] [2021-10-08 17:44:18,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:44:18,518 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:44:18,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:44:18,520 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) [2021-10-08 17:44:18,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-08 17:44:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:44:18,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 17:44:18,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:44:18,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-08 17:44:18,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:44:18,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:44:19,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:44:19,776 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:44:19,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477880682] [2021-10-08 17:44:19,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477880682] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:44:19,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:44:19,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-08 17:44:19,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410755331] [2021-10-08 17:44:19,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 17:44:19,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:44:19,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 17:44:19,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-08 17:44:19,779 INFO L87 Difference]: Start difference. First operand 248 states and 635 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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) [2021-10-08 17:44:22,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:44:22,972 INFO L93 Difference]: Finished difference Result 644 states and 1610 transitions. [2021-10-08 17:44:22,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 17:44:22,973 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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 8 [2021-10-08 17:44:22,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:44:22,979 INFO L225 Difference]: With dead ends: 644 [2021-10-08 17:44:22,979 INFO L226 Difference]: Without dead ends: 644 [2021-10-08 17:44:22,982 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1059.3ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:44:22,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2021-10-08 17:44:22,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 548. [2021-10-08 17:44:23,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 539 states have (on average 2.7050092764378477) internal successors, (1458), 547 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:44:23,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 1458 transitions. [2021-10-08 17:44:23,003 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 1458 transitions. Word has length 8 [2021-10-08 17:44:23,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:44:23,003 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 1458 transitions. [2021-10-08 17:44:23,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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) [2021-10-08 17:44:23,003 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 1458 transitions. [2021-10-08 17:44:23,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 17:44:23,005 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:44:23,005 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2021-10-08 17:44:23,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-08 17:44:23,217 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 [2021-10-08 17:44:23,218 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 17:44:23,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:44:23,219 INFO L82 PathProgramCache]: Analyzing trace with hash -761917758, now seen corresponding path program 2 times [2021-10-08 17:44:23,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:44:23,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [487290769] [2021-10-08 17:44:23,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:44:23,220 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:44:23,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:44:23,221 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) [2021-10-08 17:44:23,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-08 17:44:23,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 17:44:23,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:44:23,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 17:44:23,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:44:23,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:44:23,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:44:23,618 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-08 17:44:23,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 71 [2021-10-08 17:44:23,678 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-08 17:44:23,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 80 [2021-10-08 17:44:23,864 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-08 17:44:23,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 33 [2021-10-08 17:44:23,883 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 17:44:23,883 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 30 treesize of output 30 [2021-10-08 17:44:24,074 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-08 17:44:24,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:44:26,936 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-08 17:44:26,936 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:44:26,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [487290769] [2021-10-08 17:44:26,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [487290769] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:44:26,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:44:26,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-08 17:44:26,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207925286] [2021-10-08 17:44:26,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 17:44:26,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:44:26,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 17:44:26,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:44:26,939 INFO L87 Difference]: Start difference. First operand 548 states and 1458 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-10-08 17:44:27,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:44:27,314 INFO L93 Difference]: Finished difference Result 484 states and 1251 transitions. [2021-10-08 17:44:27,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:44:27,315 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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 10 [2021-10-08 17:44:27,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:44:27,319 INFO L225 Difference]: With dead ends: 484 [2021-10-08 17:44:27,319 INFO L226 Difference]: Without dead ends: 484 [2021-10-08 17:44:27,319 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 236.8ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:44:27,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-10-08 17:44:27,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 300. [2021-10-08 17:44:27,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 295 states have (on average 2.542372881355932) internal successors, (750), 299 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:44:27,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 750 transitions. [2021-10-08 17:44:27,330 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 750 transitions. Word has length 10 [2021-10-08 17:44:27,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:44:27,330 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 750 transitions. [2021-10-08 17:44:27,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-10-08 17:44:27,331 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 750 transitions. [2021-10-08 17:44:27,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 17:44:27,332 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:44:27,332 INFO L512 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2021-10-08 17:44:27,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-08 17:44:27,544 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 [2021-10-08 17:44:27,545 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 17:44:27,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:44:27,546 INFO L82 PathProgramCache]: Analyzing trace with hash 2042417729, now seen corresponding path program 1 times [2021-10-08 17:44:27,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:44:27,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580932036] [2021-10-08 17:44:27,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:44:27,547 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:44:27,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:44:27,548 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) [2021-10-08 17:44:27,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-08 17:44:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:44:27,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:44:27,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:44:27,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-08 17:44:28,286 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:44:28,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:44:31,267 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:44:31,267 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:44:31,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [580932036] [2021-10-08 17:44:31,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [580932036] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:44:31,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:44:31,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 17:44:31,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970766409] [2021-10-08 17:44:31,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:44:31,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:44:31,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:44:31,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:44:31,270 INFO L87 Difference]: Start difference. First operand 300 states and 750 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:45:05,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:45:05,588 INFO L93 Difference]: Finished difference Result 4280 states and 11020 transitions. [2021-10-08 17:45:05,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 17:45:05,590 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 0 states have call successors, (0), 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 [2021-10-08 17:45:05,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:45:05,612 INFO L225 Difference]: With dead ends: 4280 [2021-10-08 17:45:05,613 INFO L226 Difference]: Without dead ends: 4280 [2021-10-08 17:45:05,613 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 13695.8ms TimeCoverageRelationStatistics Valid=278, Invalid=478, Unknown=0, NotChecked=0, Total=756 [2021-10-08 17:45:05,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4280 states. [2021-10-08 17:45:05,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4280 to 320. [2021-10-08 17:45:05,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 315 states have (on average 2.507936507936508) internal successors, (790), 319 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:45:05,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 790 transitions. [2021-10-08 17:45:05,662 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 790 transitions. Word has length 11 [2021-10-08 17:45:05,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:45:05,662 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 790 transitions. [2021-10-08 17:45:05,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:45:05,662 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 790 transitions. [2021-10-08 17:45:05,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 17:45:05,663 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:45:05,663 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2021-10-08 17:45:05,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-08 17:45:05,876 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 [2021-10-08 17:45:05,876 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 17:45:05,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:45:05,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1916649573, now seen corresponding path program 2 times [2021-10-08 17:45:05,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:45:05,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2802398] [2021-10-08 17:45:05,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:45:05,878 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:45:05,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:45:05,879 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) [2021-10-08 17:45:05,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-08 17:45:06,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:45:06,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:45:06,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 17:45:06,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:45:06,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-08 17:45:06,626 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:45:06,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:45:08,891 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:45:08,891 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:45:08,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2802398] [2021-10-08 17:45:08,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2802398] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:45:08,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:45:08,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2021-10-08 17:45:08,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583494153] [2021-10-08 17:45:08,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:45:08,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:45:08,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:45:08,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:45:08,894 INFO L87 Difference]: Start difference. First operand 320 states and 790 transitions. Second operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 17 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) [2021-10-08 17:45:20,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:45:20,686 INFO L93 Difference]: Finished difference Result 744 states and 1755 transitions. [2021-10-08 17:45:20,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 17:45:20,688 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 17 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 14 [2021-10-08 17:45:20,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:45:20,693 INFO L225 Difference]: With dead ends: 744 [2021-10-08 17:45:20,693 INFO L226 Difference]: Without dead ends: 738 [2021-10-08 17:45:20,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 4706.4ms TimeCoverageRelationStatistics Valid=156, Invalid=656, Unknown=0, NotChecked=0, Total=812 [2021-10-08 17:45:20,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2021-10-08 17:45:20,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 468. [2021-10-08 17:45:20,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 463 states have (on average 2.4989200863930887) internal successors, (1157), 467 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:45:20,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1157 transitions. [2021-10-08 17:45:20,712 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1157 transitions. Word has length 14 [2021-10-08 17:45:20,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:45:20,712 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 1157 transitions. [2021-10-08 17:45:20,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 17 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) [2021-10-08 17:45:20,713 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1157 transitions. [2021-10-08 17:45:20,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 17:45:20,714 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:45:20,714 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1] [2021-10-08 17:45:20,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-08 17:45:20,928 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 [2021-10-08 17:45:20,929 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 17:45:20,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:45:20,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1329007368, now seen corresponding path program 3 times [2021-10-08 17:45:20,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:45:20,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [74325575] [2021-10-08 17:45:20,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:45:20,930 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:45:20,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:45:20,931 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) [2021-10-08 17:45:20,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-08 17:45:21,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-08 17:45:21,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:45:21,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-08 17:45:21,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:45:21,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:45:21,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:45:21,658 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-08 17:45:21,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-08 17:45:22,865 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:45:22,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:45:30,714 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:45:30,714 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:45:30,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [74325575] [2021-10-08 17:45:30,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [74325575] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:45:30,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:45:30,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2021-10-08 17:45:30,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155432838] [2021-10-08 17:45:30,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-08 17:45:30,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:45:30,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-08 17:45:30,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2021-10-08 17:45:30,717 INFO L87 Difference]: Start difference. First operand 468 states and 1157 transitions. Second operand has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:45:46,289 WARN L207 SmtUtils]: Spent 9.83 s on a formula simplification that was a NOOP. DAG size: 168 [2021-10-08 17:45:56,425 WARN L207 SmtUtils]: Spent 8.91 s on a formula simplification that was a NOOP. DAG size: 157 [2021-10-08 17:46:04,224 WARN L207 SmtUtils]: Spent 6.42 s on a formula simplification that was a NOOP. DAG size: 146 [2021-10-08 17:46:39,438 WARN L207 SmtUtils]: Spent 5.83 s on a formula simplification that was a NOOP. DAG size: 136 [2021-10-08 17:47:06,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:47:06,921 INFO L93 Difference]: Finished difference Result 4218 states and 10826 transitions. [2021-10-08 17:47:06,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-08 17:47:06,922 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 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 16 [2021-10-08 17:47:06,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:47:06,949 INFO L225 Difference]: With dead ends: 4218 [2021-10-08 17:47:06,950 INFO L226 Difference]: Without dead ends: 4218 [2021-10-08 17:47:06,951 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 64297.2ms TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2021-10-08 17:47:06,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4218 states. [2021-10-08 17:47:07,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4218 to 484. [2021-10-08 17:47:07,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 479 states have (on average 2.4822546972860127) internal successors, (1189), 483 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:47:07,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 1189 transitions. [2021-10-08 17:47:07,004 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 1189 transitions. Word has length 16 [2021-10-08 17:47:07,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:47:07,004 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 1189 transitions. [2021-10-08 17:47:07,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:47:07,005 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 1189 transitions. [2021-10-08 17:47:07,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 17:47:07,006 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:47:07,006 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:47:07,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-08 17:47:07,220 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 [2021-10-08 17:47:07,221 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 17:47:07,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:47:07,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1727703330, now seen corresponding path program 1 times [2021-10-08 17:47:07,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:47:07,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095102668] [2021-10-08 17:47:07,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:47:07,223 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:47:07,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:47:07,225 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) [2021-10-08 17:47:07,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-08 17:47:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:47:07,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:47:07,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:47:07,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:47:07,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:47:07,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 17:47:07,580 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:47:07,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095102668] [2021-10-08 17:47:07,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095102668] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:47:07,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:47:07,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:47:07,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288929498] [2021-10-08 17:47:07,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:47:07,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:47:07,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:47:07,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:47:07,582 INFO L87 Difference]: Start difference. First operand 484 states and 1189 transitions. Second operand has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:47:07,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:47:07,613 INFO L93 Difference]: Finished difference Result 695 states and 1778 transitions. [2021-10-08 17:47:07,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:47:07,614 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 16 [2021-10-08 17:47:07,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:47:07,625 INFO L225 Difference]: With dead ends: 695 [2021-10-08 17:47:07,625 INFO L226 Difference]: Without dead ends: 669 [2021-10-08 17:47:07,625 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:47:07,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2021-10-08 17:47:07,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 585. [2021-10-08 17:47:07,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 580 states have (on average 2.5206896551724136) internal successors, (1462), 584 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:47:07,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1462 transitions. [2021-10-08 17:47:07,654 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1462 transitions. Word has length 16 [2021-10-08 17:47:07,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:47:07,655 INFO L470 AbstractCegarLoop]: Abstraction has 585 states and 1462 transitions. [2021-10-08 17:47:07,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:47:07,655 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1462 transitions. [2021-10-08 17:47:07,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:47:07,669 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:47:07,669 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1] [2021-10-08 17:47:07,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-08 17:47:07,882 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 [2021-10-08 17:47:07,883 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 17:47:07,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:47:07,884 INFO L82 PathProgramCache]: Analyzing trace with hash -896146435, now seen corresponding path program 3 times [2021-10-08 17:47:07,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:47:07,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2063253208] [2021-10-08 17:47:07,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:47:07,885 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:47:07,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:47:07,887 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) [2021-10-08 17:47:07,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-08 17:47:08,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:47:08,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:47:08,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 17:47:08,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:47:08,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:47:08,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:47:08,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:47:08,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-08 17:47:08,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:47:08,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:47:08,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-08 17:47:08,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:47:08,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-08 17:47:08,545 INFO L354 Elim1Store]: treesize reduction 74, result has 32.1 percent of original size [2021-10-08 17:47:08,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 82 [2021-10-08 17:47:10,938 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-08 17:47:10,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:47:14,574 INFO L354 Elim1Store]: treesize reduction 359, result has 10.3 percent of original size [2021-10-08 17:47:14,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 158762790622 treesize of output 106820529926 Received shutdown request... [2021-10-08 17:56:34,919 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 [2021-10-08 17:56:34,919 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 17:56:34,959 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-08 17:56:34,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-08 17:56:35,173 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 [2021-10-08 17:56:35,174 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. [2021-10-08 17:56:35,176 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-08 17:56:35,176 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-08 17:56:35,177 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2REQUIRES_VIOLATION [2021-10-08 17:56:35,177 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3REQUIRES_VIOLATION [2021-10-08 17:56:35,177 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4REQUIRES_VIOLATION [2021-10-08 17:56:35,178 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5REQUIRES_VIOLATION [2021-10-08 17:56:35,178 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6REQUIRES_VIOLATION [2021-10-08 17:56:35,178 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7REQUIRES_VIOLATION [2021-10-08 17:56:35,178 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-08 17:56:35,178 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-08 17:56:35,179 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-08 17:56:35,182 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-08 17:56:35,182 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-08 17:56:35,183 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-08 17:56:35,183 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-08 17:56:35,183 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-08 17:56:35,183 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-08 17:56:35,183 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-08 17:56:35,183 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-08 17:56:35,184 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-08 17:56:35,184 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-08 17:56:35,185 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-08 17:56:35,185 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-08 17:56:35,185 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-08 17:56:35,185 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 17:56:35,185 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 17:56:35,186 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 17:56:35,186 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 17:56:35,186 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-08 17:56:35,186 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2REQUIRES_VIOLATION [2021-10-08 17:56:35,186 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3REQUIRES_VIOLATION [2021-10-08 17:56:35,186 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4REQUIRES_VIOLATION [2021-10-08 17:56:35,187 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5REQUIRES_VIOLATION [2021-10-08 17:56:35,187 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6REQUIRES_VIOLATION [2021-10-08 17:56:35,187 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7REQUIRES_VIOLATION [2021-10-08 17:56:35,187 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-08 17:56:35,187 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-08 17:56:35,199 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 17:56:35,200 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 17:56:35,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 05:56:35 BasicIcfg [2021-10-08 17:56:35,204 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 17:56:35,206 INFO L168 Benchmark]: Toolchain (without parser) took 854370.02 ms. Allocated memory was 163.6 MB in the beginning and 778.0 MB in the end (delta: 614.5 MB). Free memory was 138.4 MB in the beginning and 711.4 MB in the end (delta: -572.9 MB). Peak memory consumption was 488.3 MB. Max. memory is 8.0 GB. [2021-10-08 17:56:35,206 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 163.6 MB. Free memory is still 135.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 17:56:35,207 INFO L168 Benchmark]: CACSL2BoogieTranslator took 367.97 ms. Allocated memory is still 163.6 MB. Free memory was 138.1 MB in the beginning and 124.8 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-10-08 17:56:35,207 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.23 ms. Allocated memory is still 163.6 MB. Free memory was 124.8 MB in the beginning and 122.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 17:56:35,207 INFO L168 Benchmark]: Boogie Preprocessor took 41.93 ms. Allocated memory is still 163.6 MB. Free memory was 122.8 MB in the beginning and 120.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 17:56:35,208 INFO L168 Benchmark]: RCFGBuilder took 1658.29 ms. Allocated memory is still 163.6 MB. Free memory was 120.9 MB in the beginning and 123.1 MB in the end (delta: -2.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-10-08 17:56:35,208 INFO L168 Benchmark]: TraceAbstraction took 852208.44 ms. Allocated memory was 163.6 MB in the beginning and 778.0 MB in the end (delta: 614.5 MB). Free memory was 122.0 MB in the beginning and 711.4 MB in the end (delta: -589.4 MB). Peak memory consumption was 470.4 MB. Max. memory is 8.0 GB. [2021-10-08 17:56:35,210 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 163.6 MB. Free memory is still 135.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 367.97 ms. Allocated memory is still 163.6 MB. Free memory was 138.1 MB in the beginning and 124.8 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 75.23 ms. Allocated memory is still 163.6 MB. Free memory was 124.8 MB in the beginning and 122.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.93 ms. Allocated memory is still 163.6 MB. Free memory was 122.8 MB in the beginning and 120.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1658.29 ms. Allocated memory is still 163.6 MB. Free memory was 120.9 MB in the beginning and 123.1 MB in the end (delta: -2.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 852208.44 ms. Allocated memory was 163.6 MB in the beginning and 778.0 MB in the end (delta: 614.5 MB). Free memory was 122.0 MB in the beginning and 711.4 MB in the end (delta: -589.4 MB). Peak memory consumption was 470.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 31695.1ms, 182 PlacesBefore, 53 PlacesAfterwards, 190 TransitionsBefore, 51 TransitionsAfterwards, 1258 CoEnabledTransitionPairs, 7 FixpointIterations, 134 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 18 TrivialYvCompositions, 5 ConcurrentYvCompositions, 10 ChoiceCompositions, 208 TotalNumberOfCompositions, 3246 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1955, positive: 1836, positive conditional: 0, positive unconditional: 1836, negative: 119, negative conditional: 0, negative unconditional: 119, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 827, positive: 800, positive conditional: 0, positive unconditional: 800, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 827, positive: 783, positive conditional: 0, positive unconditional: 783, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 44, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2333, positive: 697, positive conditional: 0, positive unconditional: 697, negative: 1635, negative conditional: 0, negative unconditional: 1635, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1955, positive: 1036, positive conditional: 0, positive unconditional: 1036, negative: 92, negative conditional: 0, negative unconditional: 92, unknown: 827, unknown conditional: 0, unknown unconditional: 827] , Statistics on independence cache: Total cache size (in pairs): 130, Positive cache size: 117, Positive conditional cache size: 0, Positive unconditional cache size: 117, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13 - 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: 49]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 95]: 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 18 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 96]: 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 18 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 208 locations, 38 error locations. Started 1 CEGAR loops. OverallTime: 852066.7ms, OverallIterations: 21, TraceHistogramMax: 14, EmptinessCheckTime: 47.9ms, AutomataDifference: 200678.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 31808.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 582 SDtfs, 6211 SDslu, 3741 SDs, 0 SdLazy, 6420 SolverSat, 765 SolverUnsat, 31 SolverUnknown, 0 SolverNotchecked, 106676.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 307 GetRequests, 106 SyntacticMatches, 3 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 115876.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=585occurred in iteration=20, InterpolantAutomatonStates: 172, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 508.4ms AutomataMinimizationTime, 20 MinimizatonAttempts, 11122 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 203.7ms SsaConstructionTime, 1518.7ms SatisfiabilityAnalysisTime, 44185.7ms InterpolantComputationTime, 146 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 252 ConstructedInterpolants, 58 QuantifiedInterpolants, 5671 SizeOfPredicates, 117 NumberOfNonLiveVariables, 1711 ConjunctsInSsa, 226 ConjunctsInUnsatCore, 40 InterpolantComputations, 23 PerfectInterpolantSequences, 52/416 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