/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/parallel-ticket-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 15:50:24,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 15:50:24,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 15:50:24,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 15:50:24,874 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-07 15:50:24,907 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 15:50:24,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 15:50:24,908 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 15:50:24,908 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 15:50:24,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 15:50:24,910 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 15:50:24,910 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 15:50:24,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 15:50:24,911 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 15:50:24,911 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 15:50:24,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 15:50:24,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 15:50:24,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 15:50:24,912 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 15:50:24,913 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 15:50:24,913 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 15:50:24,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 15:50:24,914 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 15:50:24,914 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 15:50:24,914 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 15:50:24,914 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 15:50:24,915 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 15:50:24,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 15:50:24,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 15:50:24,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 15:50:24,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:50:24,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 15:50:24,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 15:50:24,917 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 15:50:24,917 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 15:50:24,918 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 15:50:24,918 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 15:50:24,918 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 15:50:25,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 15:50:25,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 15:50:25,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 15:50:25,453 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 15:50:25,454 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 15:50:25,455 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c [2021-10-07 15:50:25,549 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61d321070/1f1c7c9fd9054daea20f8fe88c881fda/FLAGc1416616e [2021-10-07 15:50:26,224 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 15:50:26,225 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c [2021-10-07 15:50:26,234 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61d321070/1f1c7c9fd9054daea20f8fe88c881fda/FLAGc1416616e [2021-10-07 15:50:26,576 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61d321070/1f1c7c9fd9054daea20f8fe88c881fda [2021-10-07 15:50:26,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 15:50:26,596 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 15:50:26,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 15:50:26,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 15:50:26,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 15:50:26,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:50:26" (1/1) ... [2021-10-07 15:50:26,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@229524e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:50:26, skipping insertion in model container [2021-10-07 15:50:26,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:50:26" (1/1) ... [2021-10-07 15:50:26,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 15:50:26,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 15:50:26,863 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/parallel-ticket-3.wvr.c[2520,2533] [2021-10-07 15:50:26,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:50:26,883 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 15:50:26,915 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c[2520,2533] [2021-10-07 15:50:26,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:50:26,941 INFO L208 MainTranslator]: Completed translation [2021-10-07 15:50:26,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:50:26 WrapperNode [2021-10-07 15:50:26,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 15:50:26,948 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 15:50:26,948 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 15:50:26,948 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 15:50:26,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:50:26" (1/1) ... [2021-10-07 15:50:26,989 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:50:26" (1/1) ... [2021-10-07 15:50:27,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 15:50:27,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 15:50:27,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 15:50:27,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 15:50:27,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:50:26" (1/1) ... [2021-10-07 15:50:27,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:50:26" (1/1) ... [2021-10-07 15:50:27,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:50:26" (1/1) ... [2021-10-07 15:50:27,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:50:26" (1/1) ... [2021-10-07 15:50:27,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:50:26" (1/1) ... [2021-10-07 15:50:27,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:50:26" (1/1) ... [2021-10-07 15:50:27,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:50:26" (1/1) ... [2021-10-07 15:50:27,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 15:50:27,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 15:50:27,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 15:50:27,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 15:50:27,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:50:26" (1/1) ... [2021-10-07 15:50:27,142 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:50:27,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:50:27,179 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) [2021-10-07 15:50:27,193 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 [2021-10-07 15:50:27,245 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 15:50:27,246 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 15:50:27,246 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 15:50:27,246 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 15:50:27,246 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-07 15:50:27,247 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-07 15:50:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 15:50:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 15:50:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-07 15:50:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-07 15:50:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 15:50:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 15:50:27,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 15:50:27,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 15:50:27,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 15:50:27,250 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 15:50:28,044 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 15:50:28,045 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-07 15:50:28,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:50:28 BoogieIcfgContainer [2021-10-07 15:50:28,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 15:50:28,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 15:50:28,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 15:50:28,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 15:50:28,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:50:26" (1/3) ... [2021-10-07 15:50:28,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1127eea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:50:28, skipping insertion in model container [2021-10-07 15:50:28,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:50:26" (2/3) ... [2021-10-07 15:50:28,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1127eea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:50:28, skipping insertion in model container [2021-10-07 15:50:28,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:50:28" (3/3) ... [2021-10-07 15:50:28,059 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-3.wvr.c [2021-10-07 15:50:28,066 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 15:50:28,066 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-10-07 15:50:28,066 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 15:50:28,108 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,109 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,109 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,109 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,110 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,110 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,110 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,110 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,111 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,111 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,111 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,111 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,112 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,112 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,112 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,112 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,113 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,113 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,113 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,113 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,114 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,114 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,114 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,114 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,115 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,115 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,116 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,116 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,116 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,116 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,117 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,117 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,117 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,117 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,118 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,118 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,118 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,118 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,119 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,119 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,119 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,120 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,120 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,120 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,121 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,121 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,121 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,121 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,122 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,122 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,122 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,123 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,123 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,123 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,123 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,123 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,124 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,124 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,124 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,124 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,125 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,125 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,125 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,126 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,126 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,126 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,126 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,127 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,127 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,127 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,127 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,127 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,131 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,132 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,132 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,132 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,132 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,133 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,136 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,136 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,136 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,136 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,137 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,137 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,139 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,139 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,140 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,140 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,140 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,140 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:50:28,148 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-07 15:50:28,210 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 15:50:28,219 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 [2021-10-07 15:50:28,219 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-10-07 15:50:28,243 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 15:50:28,259 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 147 places, 142 transitions, 308 flow [2021-10-07 15:50:28,263 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 147 places, 142 transitions, 308 flow [2021-10-07 15:50:28,265 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 147 places, 142 transitions, 308 flow [2021-10-07 15:50:28,332 INFO L129 PetriNetUnfolder]: 5/139 cut-off events. [2021-10-07 15:50:28,332 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-07 15:50:28,339 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 139 events. 5/139 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 151 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2021-10-07 15:50:28,343 INFO L116 LiptonReduction]: Number of co-enabled transitions 2512 [2021-10-07 15:50:40,740 INFO L131 LiptonReduction]: Checked pairs total: 8051 [2021-10-07 15:50:40,741 INFO L133 LiptonReduction]: Total number of compositions: 153 [2021-10-07 15:50:40,752 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 49 transitions, 122 flow [2021-10-07 15:50:40,838 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1379 states, 1365 states have (on average 3.536263736263736) internal successors, (4827), 1378 states have internal predecessors, (4827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:40,846 INFO L276 IsEmpty]: Start isEmpty. Operand has 1379 states, 1365 states have (on average 3.536263736263736) internal successors, (4827), 1378 states have internal predecessors, (4827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:40,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-07 15:50:40,852 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:40,853 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-07 15:50:40,853 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:50:40,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:40,860 INFO L82 PathProgramCache]: Analyzing trace with hash 548, now seen corresponding path program 1 times [2021-10-07 15:50:40,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:40,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1027971998] [2021-10-07 15:50:40,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:50:40,876 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:40,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:40,880 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) [2021-10-07 15:50:40,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-07 15:50:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:50:40,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-07 15:50:40,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:40,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:40,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:40,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:40,978 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:40,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1027971998] [2021-10-07 15:50:40,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1027971998] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:50:40,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:50:40,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-07 15:50:40,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845638776] [2021-10-07 15:50:40,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-07 15:50:40,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:41,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-07 15:50:41,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 15:50:41,025 INFO L87 Difference]: Start difference. First operand has 1379 states, 1365 states have (on average 3.536263736263736) internal successors, (4827), 1378 states have internal predecessors, (4827), 0 states have call successors, (0), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:41,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:41,111 INFO L93 Difference]: Finished difference Result 1376 states and 4236 transitions. [2021-10-07 15:50:41,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-07 15:50:41,113 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 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 1 [2021-10-07 15:50:41,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:41,161 INFO L225 Difference]: With dead ends: 1376 [2021-10-07 15:50:41,162 INFO L226 Difference]: Without dead ends: 1376 [2021-10-07 15:50:41,163 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 15:50:41,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2021-10-07 15:50:41,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1376. [2021-10-07 15:50:41,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 1365 states have (on average 3.1032967032967034) internal successors, (4236), 1375 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:41,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 4236 transitions. [2021-10-07 15:50:41,327 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 4236 transitions. Word has length 1 [2021-10-07 15:50:41,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:41,328 INFO L470 AbstractCegarLoop]: Abstraction has 1376 states and 4236 transitions. [2021-10-07 15:50:41,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:41,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 4236 transitions. [2021-10-07 15:50:41,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:50:41,329 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:41,329 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:50:41,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-07 15:50:41,538 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 [2021-10-07 15:50:41,539 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:50:41,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:41,541 INFO L82 PathProgramCache]: Analyzing trace with hash 537339, now seen corresponding path program 1 times [2021-10-07 15:50:41,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:41,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766714228] [2021-10-07 15:50:41,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:50:41,543 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:41,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:41,545 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) [2021-10-07 15:50:41,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-07 15:50:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:50:41,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:50:41,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:41,951 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-07 15:50:41,952 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 18 treesize of output 49 [2021-10-07 15:50:42,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:42,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:42,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:42,127 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:42,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766714228] [2021-10-07 15:50:42,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766714228] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:50:42,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:50:42,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:50:42,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363889592] [2021-10-07 15:50:42,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:50:42,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:42,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:50:42,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:50:42,132 INFO L87 Difference]: Start difference. First operand 1376 states and 4236 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:42,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:42,199 INFO L93 Difference]: Finished difference Result 1333 states and 4127 transitions. [2021-10-07 15:50:42,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:50:42,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 15:50:42,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:42,215 INFO L225 Difference]: With dead ends: 1333 [2021-10-07 15:50:42,216 INFO L226 Difference]: Without dead ends: 1333 [2021-10-07 15:50:42,217 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:50:42,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2021-10-07 15:50:42,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1333. [2021-10-07 15:50:42,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 1324 states have (on average 3.117069486404834) internal successors, (4127), 1332 states have internal predecessors, (4127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:42,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 4127 transitions. [2021-10-07 15:50:42,282 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 4127 transitions. Word has length 3 [2021-10-07 15:50:42,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:42,282 INFO L470 AbstractCegarLoop]: Abstraction has 1333 states and 4127 transitions. [2021-10-07 15:50:42,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:42,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 4127 transitions. [2021-10-07 15:50:42,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:50:42,283 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:42,284 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:50:42,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-07 15:50:42,498 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 [2021-10-07 15:50:42,498 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:50:42,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:42,500 INFO L82 PathProgramCache]: Analyzing trace with hash 537337, now seen corresponding path program 1 times [2021-10-07 15:50:42,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:42,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1574245314] [2021-10-07 15:50:42,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:50:42,501 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:42,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:42,503 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) [2021-10-07 15:50:42,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-07 15:50:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:50:42,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:50:42,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:42,610 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 15:50:42,611 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 [2021-10-07 15:50:42,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:42,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:42,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:42,721 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:42,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1574245314] [2021-10-07 15:50:42,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1574245314] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:50:42,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:50:42,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:50:42,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37159842] [2021-10-07 15:50:42,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:50:42,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:42,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:50:42,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:50:42,729 INFO L87 Difference]: Start difference. First operand 1333 states and 4127 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:42,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:42,779 INFO L93 Difference]: Finished difference Result 1290 states and 4018 transitions. [2021-10-07 15:50:42,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:50:42,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 [2021-10-07 15:50:42,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:42,793 INFO L225 Difference]: With dead ends: 1290 [2021-10-07 15:50:42,793 INFO L226 Difference]: Without dead ends: 1290 [2021-10-07 15:50:42,794 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:50:42,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2021-10-07 15:50:42,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1290. [2021-10-07 15:50:42,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1283 states have (on average 3.131722525331255) internal successors, (4018), 1289 states have internal predecessors, (4018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:42,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 4018 transitions. [2021-10-07 15:50:42,862 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 4018 transitions. Word has length 3 [2021-10-07 15:50:42,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:42,862 INFO L470 AbstractCegarLoop]: Abstraction has 1290 states and 4018 transitions. [2021-10-07 15:50:42,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:42,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 4018 transitions. [2021-10-07 15:50:42,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:50:42,863 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:42,864 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:50:42,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-07 15:50:43,079 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 [2021-10-07 15:50:43,080 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:50:43,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:43,083 INFO L82 PathProgramCache]: Analyzing trace with hash 516393422, now seen corresponding path program 1 times [2021-10-07 15:50:43,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:43,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947759138] [2021-10-07 15:50:43,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:50:43,084 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:43,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:43,088 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) [2021-10-07 15:50:43,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-07 15:50:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:50:43,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:50:43,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:43,313 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-07 15:50:43,313 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 18 treesize of output 49 [2021-10-07 15:50:43,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:43,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:43,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:43,534 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:43,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947759138] [2021-10-07 15:50:43,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947759138] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:50:43,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:50:43,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:50:43,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090053593] [2021-10-07 15:50:43,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:50:43,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:43,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:50:43,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:50:43,537 INFO L87 Difference]: Start difference. First operand 1290 states and 4018 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:43,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:43,589 INFO L93 Difference]: Finished difference Result 1242 states and 3894 transitions. [2021-10-07 15:50:43,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:50:43,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 15:50:43,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:43,602 INFO L225 Difference]: With dead ends: 1242 [2021-10-07 15:50:43,602 INFO L226 Difference]: Without dead ends: 1242 [2021-10-07 15:50:43,603 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:50:43,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2021-10-07 15:50:43,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 1242. [2021-10-07 15:50:43,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 1237 states have (on average 3.1479385610347617) internal successors, (3894), 1241 states have internal predecessors, (3894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:43,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 3894 transitions. [2021-10-07 15:50:43,660 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 3894 transitions. Word has length 5 [2021-10-07 15:50:43,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:43,662 INFO L470 AbstractCegarLoop]: Abstraction has 1242 states and 3894 transitions. [2021-10-07 15:50:43,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:43,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 3894 transitions. [2021-10-07 15:50:43,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:50:43,663 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:43,663 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:50:43,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-07 15:50:43,875 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 [2021-10-07 15:50:43,875 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:50:43,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:43,877 INFO L82 PathProgramCache]: Analyzing trace with hash 516393423, now seen corresponding path program 1 times [2021-10-07 15:50:43,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:43,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2094777957] [2021-10-07 15:50:43,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:50:43,878 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:43,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:43,880 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) [2021-10-07 15:50:43,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-07 15:50:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:50:43,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:50:43,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:43,988 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 15:50:43,989 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 [2021-10-07 15:50:44,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:44,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:44,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:44,055 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:44,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2094777957] [2021-10-07 15:50:44,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2094777957] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:50:44,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:50:44,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:50:44,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388982729] [2021-10-07 15:50:44,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:50:44,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:44,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:50:44,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:50:44,060 INFO L87 Difference]: Start difference. First operand 1242 states and 3894 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-10-07 15:50:44,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:44,111 INFO L93 Difference]: Finished difference Result 1194 states and 3770 transitions. [2021-10-07 15:50:44,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:50:44,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 5 [2021-10-07 15:50:44,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:44,124 INFO L225 Difference]: With dead ends: 1194 [2021-10-07 15:50:44,125 INFO L226 Difference]: Without dead ends: 1194 [2021-10-07 15:50:44,125 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:50:44,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2021-10-07 15:50:44,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2021-10-07 15:50:44,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1194 states, 1191 states have (on average 3.165407220822838) internal successors, (3770), 1193 states have internal predecessors, (3770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:44,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 3770 transitions. [2021-10-07 15:50:44,229 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 3770 transitions. Word has length 5 [2021-10-07 15:50:44,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:44,230 INFO L470 AbstractCegarLoop]: Abstraction has 1194 states and 3770 transitions. [2021-10-07 15:50:44,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-10-07 15:50:44,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 3770 transitions. [2021-10-07 15:50:44,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:50:44,231 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:44,231 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:50:44,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-07 15:50:44,437 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 [2021-10-07 15:50:44,438 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:50:44,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:44,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1962114165, now seen corresponding path program 1 times [2021-10-07 15:50:44,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:44,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226798965] [2021-10-07 15:50:44,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:50:44,440 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:44,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:44,441 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) [2021-10-07 15:50:44,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-07 15:50:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:50:44,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:50:44,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:44,573 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 15:50:44,574 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 [2021-10-07 15:50:44,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:44,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:44,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:44,772 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:44,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [226798965] [2021-10-07 15:50:44,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [226798965] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:50:44,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:50:44,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:50:44,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443189138] [2021-10-07 15:50:44,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:50:44,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:44,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:50:44,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:50:44,775 INFO L87 Difference]: Start difference. First operand 1194 states and 3770 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:44,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:44,813 INFO L93 Difference]: Finished difference Result 942 states and 2882 transitions. [2021-10-07 15:50:44,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:50:44,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 15:50:44,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:44,822 INFO L225 Difference]: With dead ends: 942 [2021-10-07 15:50:44,823 INFO L226 Difference]: Without dead ends: 942 [2021-10-07 15:50:44,823 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:50:44,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2021-10-07 15:50:44,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 942. [2021-10-07 15:50:44,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 940 states have (on average 3.0659574468085107) internal successors, (2882), 941 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:44,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 2882 transitions. [2021-10-07 15:50:44,865 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 2882 transitions. Word has length 7 [2021-10-07 15:50:44,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:44,866 INFO L470 AbstractCegarLoop]: Abstraction has 942 states and 2882 transitions. [2021-10-07 15:50:44,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:44,866 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 2882 transitions. [2021-10-07 15:50:44,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:50:44,867 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:44,867 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:50:44,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-07 15:50:45,083 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 [2021-10-07 15:50:45,083 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:50:45,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:45,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1962114164, now seen corresponding path program 1 times [2021-10-07 15:50:45,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:45,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [531894927] [2021-10-07 15:50:45,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:50:45,086 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:45,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:45,087 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) [2021-10-07 15:50:45,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-07 15:50:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:50:45,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:50:45,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:45,339 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-07 15:50:45,340 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 31 treesize of output 61 [2021-10-07 15:50:45,349 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 62 treesize of output 60 [2021-10-07 15:50:45,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:45,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:45,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:45,663 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:45,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [531894927] [2021-10-07 15:50:45,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [531894927] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:50:45,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:50:45,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:50:45,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261890947] [2021-10-07 15:50:45,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:50:45,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:45,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:50:45,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:50:45,665 INFO L87 Difference]: Start difference. First operand 942 states and 2882 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:45,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:45,697 INFO L93 Difference]: Finished difference Result 690 states and 1994 transitions. [2021-10-07 15:50:45,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:50:45,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 15:50:45,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:45,703 INFO L225 Difference]: With dead ends: 690 [2021-10-07 15:50:45,704 INFO L226 Difference]: Without dead ends: 690 [2021-10-07 15:50:45,704 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:50:45,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2021-10-07 15:50:45,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 690. [2021-10-07 15:50:45,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 689 states have (on average 2.8940493468795356) internal successors, (1994), 689 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:45,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1994 transitions. [2021-10-07 15:50:45,732 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1994 transitions. Word has length 7 [2021-10-07 15:50:45,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:45,732 INFO L470 AbstractCegarLoop]: Abstraction has 690 states and 1994 transitions. [2021-10-07 15:50:45,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:45,733 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1994 transitions. [2021-10-07 15:50:45,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-07 15:50:45,739 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:45,739 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:50:45,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-07 15:50:45,953 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 [2021-10-07 15:50:45,953 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:50:45,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:45,954 INFO L82 PathProgramCache]: Analyzing trace with hash -89272419, now seen corresponding path program 1 times [2021-10-07 15:50:45,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:45,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553227801] [2021-10-07 15:50:45,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:50:45,955 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:45,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:45,956 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) [2021-10-07 15:50:45,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-07 15:50:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:50:46,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:50:46,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:46,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:46,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:46,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:46,470 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:46,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553227801] [2021-10-07 15:50:46,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553227801] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:50:46,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:50:46,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-07 15:50:46,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397797863] [2021-10-07 15:50:46,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 15:50:46,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:46,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 15:50:46,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:50:46,472 INFO L87 Difference]: Start difference. First operand 690 states and 1994 transitions. Second operand has 5 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:46,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:46,507 INFO L93 Difference]: Finished difference Result 997 states and 2819 transitions. [2021-10-07 15:50:46,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:50:46,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 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 29 [2021-10-07 15:50:46,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:46,512 INFO L225 Difference]: With dead ends: 997 [2021-10-07 15:50:46,513 INFO L226 Difference]: Without dead ends: 582 [2021-10-07 15:50:46,513 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.4ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:50:46,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-10-07 15:50:46,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 582. [2021-10-07 15:50:46,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 581 states have (on average 2.7263339070567985) internal successors, (1584), 581 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:46,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 1584 transitions. [2021-10-07 15:50:46,537 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 1584 transitions. Word has length 29 [2021-10-07 15:50:46,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:46,537 INFO L470 AbstractCegarLoop]: Abstraction has 582 states and 1584 transitions. [2021-10-07 15:50:46,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:46,538 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 1584 transitions. [2021-10-07 15:50:46,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-07 15:50:46,540 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:46,540 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:50:46,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-07 15:50:46,744 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 [2021-10-07 15:50:46,745 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:50:46,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:46,746 INFO L82 PathProgramCache]: Analyzing trace with hash -438342517, now seen corresponding path program 2 times [2021-10-07 15:50:46,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:46,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957541892] [2021-10-07 15:50:46,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:50:46,748 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:46,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:46,749 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) [2021-10-07 15:50:46,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-07 15:50:46,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:50:46,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:50:46,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:50:46,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:47,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:47,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:47,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:47,601 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:47,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957541892] [2021-10-07 15:50:47,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957541892] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:50:47,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:50:47,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-07 15:50:47,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254608881] [2021-10-07 15:50:47,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:50:47,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:47,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:50:47,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:50:47,604 INFO L87 Difference]: Start difference. First operand 582 states and 1584 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:51,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:51,151 INFO L93 Difference]: Finished difference Result 812 states and 2059 transitions. [2021-10-07 15:50:51,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 15:50:51,152 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 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 29 [2021-10-07 15:50:51,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:51,163 INFO L225 Difference]: With dead ends: 812 [2021-10-07 15:50:51,163 INFO L226 Difference]: Without dead ends: 804 [2021-10-07 15:50:51,165 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2048.3ms TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:50:51,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2021-10-07 15:50:51,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 630. [2021-10-07 15:50:51,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 629 states have (on average 2.686804451510334) internal successors, (1690), 629 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:51,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 1690 transitions. [2021-10-07 15:50:51,191 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 1690 transitions. Word has length 29 [2021-10-07 15:50:51,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:51,192 INFO L470 AbstractCegarLoop]: Abstraction has 630 states and 1690 transitions. [2021-10-07 15:50:51,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:51,193 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1690 transitions. [2021-10-07 15:50:51,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-07 15:50:51,195 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:51,195 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:50:51,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-07 15:50:51,408 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 [2021-10-07 15:50:51,408 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:50:51,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:51,410 INFO L82 PathProgramCache]: Analyzing trace with hash -53769847, now seen corresponding path program 3 times [2021-10-07 15:50:51,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:51,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2011759880] [2021-10-07 15:50:51,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:50:51,411 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:51,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:51,412 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) [2021-10-07 15:50:51,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-07 15:50:51,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-07 15:50:51,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:50:51,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:50:51,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:51,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:51,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:52,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:52,160 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:52,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2011759880] [2021-10-07 15:50:52,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2011759880] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:50:52,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:50:52,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-07 15:50:52,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730057251] [2021-10-07 15:50:52,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:50:52,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:52,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:50:52,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:50:52,163 INFO L87 Difference]: Start difference. First operand 630 states and 1690 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:56,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:56,664 INFO L93 Difference]: Finished difference Result 706 states and 1644 transitions. [2021-10-07 15:50:56,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-07 15:50:56,666 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 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 29 [2021-10-07 15:50:56,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:56,671 INFO L225 Difference]: With dead ends: 706 [2021-10-07 15:50:56,671 INFO L226 Difference]: Without dead ends: 576 [2021-10-07 15:50:56,672 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 2773.1ms TimeCoverageRelationStatistics Valid=267, Invalid=923, Unknown=0, NotChecked=0, Total=1190 [2021-10-07 15:50:56,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-10-07 15:50:56,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 450. [2021-10-07 15:50:56,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 2.4320712694877504) internal successors, (1092), 449 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:56,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1092 transitions. [2021-10-07 15:50:56,691 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1092 transitions. Word has length 29 [2021-10-07 15:50:56,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:56,691 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 1092 transitions. [2021-10-07 15:50:56,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:56,692 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1092 transitions. [2021-10-07 15:50:56,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-07 15:50:56,693 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:56,694 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:50:56,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-07 15:50:56,907 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 [2021-10-07 15:50:56,908 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:50:56,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:56,909 INFO L82 PathProgramCache]: Analyzing trace with hash 114699501, now seen corresponding path program 4 times [2021-10-07 15:50:56,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:56,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823066499] [2021-10-07 15:50:56,912 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:50:56,912 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:56,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:56,913 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) [2021-10-07 15:50:56,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-07 15:50:57,055 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:50:57,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:50:57,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:50:57,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:57,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:57,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:57,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:57,608 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:57,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823066499] [2021-10-07 15:50:57,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823066499] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:50:57,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:50:57,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-07 15:50:57,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458220773] [2021-10-07 15:50:57,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:50:57,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:57,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:50:57,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:50:57,614 INFO L87 Difference]: Start difference. First operand 450 states and 1092 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:01,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:01,505 INFO L93 Difference]: Finished difference Result 722 states and 1669 transitions. [2021-10-07 15:51:01,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 15:51:01,506 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 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 29 [2021-10-07 15:51:01,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:01,511 INFO L225 Difference]: With dead ends: 722 [2021-10-07 15:51:01,511 INFO L226 Difference]: Without dead ends: 714 [2021-10-07 15:51:01,512 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 2202.6ms TimeCoverageRelationStatistics Valid=208, Invalid=662, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:51:01,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2021-10-07 15:51:01,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 452. [2021-10-07 15:51:01,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 451 states have (on average 2.4279379157427936) internal successors, (1095), 451 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:01,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 1095 transitions. [2021-10-07 15:51:01,529 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 1095 transitions. Word has length 29 [2021-10-07 15:51:01,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:01,529 INFO L470 AbstractCegarLoop]: Abstraction has 452 states and 1095 transitions. [2021-10-07 15:51:01,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:01,529 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 1095 transitions. [2021-10-07 15:51:01,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-07 15:51:01,531 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:01,531 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:01,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:01,744 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 [2021-10-07 15:51:01,745 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:01,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:01,746 INFO L82 PathProgramCache]: Analyzing trace with hash 581581001, now seen corresponding path program 5 times [2021-10-07 15:51:01,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:01,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [674618728] [2021-10-07 15:51:01,747 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:51:01,747 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:01,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:01,748 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) [2021-10-07 15:51:01,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-07 15:51:01,887 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:51:01,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:01,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:51:01,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:02,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:02,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:02,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:02,369 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:02,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [674618728] [2021-10-07 15:51:02,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [674618728] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:51:02,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:51:02,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-07 15:51:02,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761613206] [2021-10-07 15:51:02,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:51:02,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:02,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:51:02,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:51:02,381 INFO L87 Difference]: Start difference. First operand 452 states and 1095 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:04,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:04,818 INFO L93 Difference]: Finished difference Result 686 states and 1596 transitions. [2021-10-07 15:51:04,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:51:04,820 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 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 29 [2021-10-07 15:51:04,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:04,826 INFO L225 Difference]: With dead ends: 686 [2021-10-07 15:51:04,826 INFO L226 Difference]: Without dead ends: 678 [2021-10-07 15:51:04,827 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1103.3ms TimeCoverageRelationStatistics Valid=183, Invalid=687, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:51:04,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2021-10-07 15:51:04,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 450. [2021-10-07 15:51:04,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 2.4276169265033407) internal successors, (1090), 449 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:04,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1090 transitions. [2021-10-07 15:51:04,862 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1090 transitions. Word has length 29 [2021-10-07 15:51:04,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:04,862 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 1090 transitions. [2021-10-07 15:51:04,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:04,863 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1090 transitions. [2021-10-07 15:51:04,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-07 15:51:04,867 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:04,867 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:04,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-07 15:51:05,083 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 [2021-10-07 15:51:05,084 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:05,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:05,084 INFO L82 PathProgramCache]: Analyzing trace with hash -382613089, now seen corresponding path program 6 times [2021-10-07 15:51:05,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:05,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [918645430] [2021-10-07 15:51:05,085 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:51:05,085 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:05,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:05,087 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) [2021-10-07 15:51:05,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-07 15:51:05,249 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-07 15:51:05,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:05,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:51:05,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:05,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:05,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:05,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:05,777 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:05,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [918645430] [2021-10-07 15:51:05,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [918645430] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:51:05,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:51:05,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-07 15:51:05,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659465506] [2021-10-07 15:51:05,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:51:05,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:05,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:51:05,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:51:05,781 INFO L87 Difference]: Start difference. First operand 450 states and 1090 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:07,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:07,783 INFO L93 Difference]: Finished difference Result 678 states and 1582 transitions. [2021-10-07 15:51:07,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:51:07,785 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 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 29 [2021-10-07 15:51:07,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:07,789 INFO L225 Difference]: With dead ends: 678 [2021-10-07 15:51:07,790 INFO L226 Difference]: Without dead ends: 664 [2021-10-07 15:51:07,790 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 995.9ms TimeCoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:51:07,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-10-07 15:51:07,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 454. [2021-10-07 15:51:07,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 2.4216335540838854) internal successors, (1097), 453 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:07,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 1097 transitions. [2021-10-07 15:51:07,816 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 1097 transitions. Word has length 29 [2021-10-07 15:51:07,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:07,816 INFO L470 AbstractCegarLoop]: Abstraction has 454 states and 1097 transitions. [2021-10-07 15:51:07,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:07,817 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 1097 transitions. [2021-10-07 15:51:07,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-07 15:51:07,818 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:07,818 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:07,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:08,030 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 [2021-10-07 15:51:08,031 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:08,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:08,032 INFO L82 PathProgramCache]: Analyzing trace with hash -464921919, now seen corresponding path program 7 times [2021-10-07 15:51:08,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:08,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [907335179] [2021-10-07 15:51:08,033 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:51:08,034 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:08,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:08,035 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) [2021-10-07 15:51:08,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-07 15:51:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:51:08,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:51:08,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:08,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:08,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:08,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:08,713 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:08,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [907335179] [2021-10-07 15:51:08,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [907335179] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:51:08,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:51:08,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-07 15:51:08,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915202983] [2021-10-07 15:51:08,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:51:08,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:08,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:51:08,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:51:08,715 INFO L87 Difference]: Start difference. First operand 454 states and 1097 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:12,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:12,018 INFO L93 Difference]: Finished difference Result 698 states and 1613 transitions. [2021-10-07 15:51:12,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 15:51:12,019 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 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 29 [2021-10-07 15:51:12,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:12,023 INFO L225 Difference]: With dead ends: 698 [2021-10-07 15:51:12,023 INFO L226 Difference]: Without dead ends: 666 [2021-10-07 15:51:12,024 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1760.9ms TimeCoverageRelationStatistics Valid=182, Invalid=688, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:51:12,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-10-07 15:51:12,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 446. [2021-10-07 15:51:12,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 2.4247191011235953) internal successors, (1079), 445 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:12,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 1079 transitions. [2021-10-07 15:51:12,039 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 1079 transitions. Word has length 29 [2021-10-07 15:51:12,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:12,040 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 1079 transitions. [2021-10-07 15:51:12,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:12,040 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 1079 transitions. [2021-10-07 15:51:12,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-07 15:51:12,042 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:12,042 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:12,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:12,255 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 [2021-10-07 15:51:12,255 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:12,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:12,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1973761077, now seen corresponding path program 8 times [2021-10-07 15:51:12,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:12,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235890832] [2021-10-07 15:51:12,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:51:12,258 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:12,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:12,260 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) [2021-10-07 15:51:12,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-07 15:51:12,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:51:12,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:12,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:51:12,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:12,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:12,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:13,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:13,107 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:13,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235890832] [2021-10-07 15:51:13,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235890832] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:51:13,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:51:13,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-07 15:51:13,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114273042] [2021-10-07 15:51:13,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:51:13,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:13,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:51:13,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:51:13,109 INFO L87 Difference]: Start difference. First operand 446 states and 1079 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:14,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:14,805 INFO L93 Difference]: Finished difference Result 576 states and 1339 transitions. [2021-10-07 15:51:14,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 15:51:14,806 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 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 29 [2021-10-07 15:51:14,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:14,811 INFO L225 Difference]: With dead ends: 576 [2021-10-07 15:51:14,811 INFO L226 Difference]: Without dead ends: 568 [2021-10-07 15:51:14,811 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1141.2ms TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:51:14,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-10-07 15:51:14,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 442. [2021-10-07 15:51:14,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 2.4149659863945576) internal successors, (1065), 441 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:14,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1065 transitions. [2021-10-07 15:51:14,824 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1065 transitions. Word has length 29 [2021-10-07 15:51:14,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:14,824 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 1065 transitions. [2021-10-07 15:51:14,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:14,825 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1065 transitions. [2021-10-07 15:51:14,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-07 15:51:14,826 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:14,826 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:14,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:15,039 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 [2021-10-07 15:51:15,039 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:15,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:15,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1506879577, now seen corresponding path program 9 times [2021-10-07 15:51:15,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:15,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [673490049] [2021-10-07 15:51:15,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:51:15,042 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:15,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:15,043 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) [2021-10-07 15:51:15,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-07 15:51:15,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-07 15:51:15,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:15,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:51:15,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:15,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:15,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:15,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:15,736 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:15,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [673490049] [2021-10-07 15:51:15,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [673490049] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:51:15,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:51:15,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-07 15:51:15,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151000603] [2021-10-07 15:51:15,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:51:15,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:15,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:51:15,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:51:15,738 INFO L87 Difference]: Start difference. First operand 442 states and 1065 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:17,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:17,212 INFO L93 Difference]: Finished difference Result 546 states and 1285 transitions. [2021-10-07 15:51:17,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 15:51:17,213 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 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 29 [2021-10-07 15:51:17,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:17,217 INFO L225 Difference]: With dead ends: 546 [2021-10-07 15:51:17,217 INFO L226 Difference]: Without dead ends: 530 [2021-10-07 15:51:17,217 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 791.6ms TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:51:17,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-10-07 15:51:17,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 436. [2021-10-07 15:51:17,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 435 states have (on average 2.4091954022988507) internal successors, (1048), 435 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:17,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1048 transitions. [2021-10-07 15:51:17,230 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1048 transitions. Word has length 29 [2021-10-07 15:51:17,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:17,231 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 1048 transitions. [2021-10-07 15:51:17,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:17,231 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1048 transitions. [2021-10-07 15:51:17,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-07 15:51:17,232 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:17,233 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:17,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:17,445 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 [2021-10-07 15:51:17,446 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:17,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:17,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1338082029, now seen corresponding path program 10 times [2021-10-07 15:51:17,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:17,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1619761375] [2021-10-07 15:51:17,449 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:51:17,449 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:17,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:17,450 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) [2021-10-07 15:51:17,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-07 15:51:17,650 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:51:17,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:17,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:51:17,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:17,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:17,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:18,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:18,149 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:18,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1619761375] [2021-10-07 15:51:18,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1619761375] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:51:18,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:51:18,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-07 15:51:18,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211071514] [2021-10-07 15:51:18,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:51:18,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:18,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:51:18,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:51:18,152 INFO L87 Difference]: Start difference. First operand 436 states and 1048 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:18,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:18,843 INFO L93 Difference]: Finished difference Result 472 states and 1116 transitions. [2021-10-07 15:51:18,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:51:18,844 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 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 29 [2021-10-07 15:51:18,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:18,846 INFO L225 Difference]: With dead ends: 472 [2021-10-07 15:51:18,846 INFO L226 Difference]: Without dead ends: 442 [2021-10-07 15:51:18,847 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 544.1ms TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:51:18,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-10-07 15:51:18,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 434. [2021-10-07 15:51:18,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 2.3856812933025404) internal successors, (1033), 433 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:18,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1033 transitions. [2021-10-07 15:51:18,858 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1033 transitions. Word has length 29 [2021-10-07 15:51:18,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:18,859 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 1033 transitions. [2021-10-07 15:51:18,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:18,859 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1033 transitions. [2021-10-07 15:51:18,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-07 15:51:18,860 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:18,860 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:18,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:19,073 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 [2021-10-07 15:51:19,074 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:19,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:19,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1998647911, now seen corresponding path program 11 times [2021-10-07 15:51:19,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:19,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106530462] [2021-10-07 15:51:19,076 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:51:19,076 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:19,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:19,078 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) [2021-10-07 15:51:19,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-07 15:51:19,290 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:51:19,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:19,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:51:19,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:19,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:19,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:19,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:19,797 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:19,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106530462] [2021-10-07 15:51:19,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106530462] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:51:19,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:51:19,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-07 15:51:19,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61223466] [2021-10-07 15:51:19,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:51:19,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:19,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:51:19,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:51:19,799 INFO L87 Difference]: Start difference. First operand 434 states and 1033 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:21,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:21,562 INFO L93 Difference]: Finished difference Result 630 states and 1425 transitions. [2021-10-07 15:51:21,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:51:21,563 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 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 29 [2021-10-07 15:51:21,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:21,567 INFO L225 Difference]: With dead ends: 630 [2021-10-07 15:51:21,567 INFO L226 Difference]: Without dead ends: 586 [2021-10-07 15:51:21,568 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 905.7ms TimeCoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:51:21,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-10-07 15:51:21,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 456. [2021-10-07 15:51:21,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 455 states have (on average 2.353846153846154) internal successors, (1071), 455 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:21,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 1071 transitions. [2021-10-07 15:51:21,587 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 1071 transitions. Word has length 29 [2021-10-07 15:51:21,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:21,587 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 1071 transitions. [2021-10-07 15:51:21,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:21,588 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 1071 transitions. [2021-10-07 15:51:21,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-07 15:51:21,589 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:21,590 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:21,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:21,802 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 [2021-10-07 15:51:21,803 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:21,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:21,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1916339081, now seen corresponding path program 12 times [2021-10-07 15:51:21,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:21,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529298400] [2021-10-07 15:51:21,805 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:51:21,805 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:21,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:21,806 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) [2021-10-07 15:51:21,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-07 15:51:22,016 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-07 15:51:22,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:22,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:51:22,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:22,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:22,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:22,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:22,548 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:22,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529298400] [2021-10-07 15:51:22,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529298400] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:51:22,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:51:22,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-07 15:51:22,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200021517] [2021-10-07 15:51:22,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:51:22,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:22,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:51:22,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:51:22,551 INFO L87 Difference]: Start difference. First operand 456 states and 1071 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:24,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:24,379 INFO L93 Difference]: Finished difference Result 558 states and 1251 transitions. [2021-10-07 15:51:24,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 15:51:24,380 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 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 29 [2021-10-07 15:51:24,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:24,384 INFO L225 Difference]: With dead ends: 558 [2021-10-07 15:51:24,384 INFO L226 Difference]: Without dead ends: 486 [2021-10-07 15:51:24,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1046.6ms TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:51:24,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2021-10-07 15:51:24,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 428. [2021-10-07 15:51:24,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 2.3185011709601873) internal successors, (990), 427 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:24,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 990 transitions. [2021-10-07 15:51:24,397 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 990 transitions. Word has length 29 [2021-10-07 15:51:24,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:24,397 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 990 transitions. [2021-10-07 15:51:24,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:24,397 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 990 transitions. [2021-10-07 15:51:24,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-07 15:51:24,399 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:24,399 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:24,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:24,611 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 [2021-10-07 15:51:24,612 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:24,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:24,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1163327747, now seen corresponding path program 13 times [2021-10-07 15:51:24,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:24,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1728875496] [2021-10-07 15:51:24,614 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:51:24,614 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:24,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:24,616 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) [2021-10-07 15:51:24,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-07 15:51:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:51:24,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:51:24,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:25,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:25,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:25,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:25,383 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:25,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1728875496] [2021-10-07 15:51:25,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1728875496] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:51:25,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:51:25,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-07 15:51:25,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604153448] [2021-10-07 15:51:25,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:51:25,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:25,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:51:25,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:51:25,386 INFO L87 Difference]: Start difference. First operand 428 states and 990 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:26,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:26,231 INFO L93 Difference]: Finished difference Result 552 states and 1228 transitions. [2021-10-07 15:51:26,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:51:26,233 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 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 29 [2021-10-07 15:51:26,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:26,236 INFO L225 Difference]: With dead ends: 552 [2021-10-07 15:51:26,236 INFO L226 Difference]: Without dead ends: 460 [2021-10-07 15:51:26,237 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 593.4ms TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:51:26,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-10-07 15:51:26,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 402. [2021-10-07 15:51:26,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 2.314214463840399) internal successors, (928), 401 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:26,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 928 transitions. [2021-10-07 15:51:26,252 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 928 transitions. Word has length 29 [2021-10-07 15:51:26,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:26,252 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 928 transitions. [2021-10-07 15:51:26,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:26,252 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 928 transitions. [2021-10-07 15:51:26,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-07 15:51:26,254 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:26,254 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:26,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:26,467 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 [2021-10-07 15:51:26,467 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:26,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:26,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1047284713, now seen corresponding path program 14 times [2021-10-07 15:51:26,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:26,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1393847270] [2021-10-07 15:51:26,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:51:26,469 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:26,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:26,470 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) [2021-10-07 15:51:26,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-07 15:51:26,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:51:26,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:26,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:51:26,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:26,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:26,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:27,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:27,009 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:27,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1393847270] [2021-10-07 15:51:27,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1393847270] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:51:27,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:51:27,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-07 15:51:27,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980198009] [2021-10-07 15:51:27,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:51:27,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:27,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:51:27,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:51:27,011 INFO L87 Difference]: Start difference. First operand 402 states and 928 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:27,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:27,237 INFO L93 Difference]: Finished difference Result 154 states and 310 transitions. [2021-10-07 15:51:27,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:51:27,237 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 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 29 [2021-10-07 15:51:27,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:27,238 INFO L225 Difference]: With dead ends: 154 [2021-10-07 15:51:27,238 INFO L226 Difference]: Without dead ends: 106 [2021-10-07 15:51:27,238 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 145.4ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:51:27,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-07 15:51:27,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 98. [2021-10-07 15:51:27,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 2.0309278350515463) internal successors, (197), 97 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:27,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 197 transitions. [2021-10-07 15:51:27,244 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 197 transitions. Word has length 29 [2021-10-07 15:51:27,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:27,245 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 197 transitions. [2021-10-07 15:51:27,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:27,245 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 197 transitions. [2021-10-07 15:51:27,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-07 15:51:27,246 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:27,246 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:27,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:27,446 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 [2021-10-07 15:51:27,447 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:27,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:27,448 INFO L82 PathProgramCache]: Analyzing trace with hash -208516583, now seen corresponding path program 15 times [2021-10-07 15:51:27,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:27,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [191817656] [2021-10-07 15:51:27,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:51:27,449 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:27,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:27,450 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:51:27,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-07 15:51:27,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-07 15:51:27,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:27,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:51:27,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:27,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:27,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:28,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:28,147 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:28,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [191817656] [2021-10-07 15:51:28,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [191817656] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:51:28,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:51:28,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-07 15:51:28,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971622676] [2021-10-07 15:51:28,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:51:28,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:28,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:51:28,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:51:28,149 INFO L87 Difference]: Start difference. First operand 98 states and 197 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:28,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:28,599 INFO L93 Difference]: Finished difference Result 112 states and 216 transitions. [2021-10-07 15:51:28,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:51:28,600 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 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 29 [2021-10-07 15:51:28,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:28,600 INFO L225 Difference]: With dead ends: 112 [2021-10-07 15:51:28,600 INFO L226 Difference]: Without dead ends: 100 [2021-10-07 15:51:28,601 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 441.4ms TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:51:28,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-10-07 15:51:28,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2021-10-07 15:51:28,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.9690721649484537) internal successors, (191), 97 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:28,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 191 transitions. [2021-10-07 15:51:28,604 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 191 transitions. Word has length 29 [2021-10-07 15:51:28,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:28,605 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 191 transitions. [2021-10-07 15:51:28,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:28,605 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 191 transitions. [2021-10-07 15:51:28,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-07 15:51:28,606 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:28,606 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:28,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:28,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:51:28,819 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:28,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:28,820 INFO L82 PathProgramCache]: Analyzing trace with hash 994655997, now seen corresponding path program 16 times [2021-10-07 15:51:28,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:28,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121673516] [2021-10-07 15:51:28,822 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:51:28,822 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:28,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:28,823 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:51:28,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-07 15:51:29,076 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:51:29,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:29,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:51:29,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:29,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:29,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:29,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:29,562 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:29,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121673516] [2021-10-07 15:51:29,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2121673516] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:51:29,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:51:29,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-07 15:51:29,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708839313] [2021-10-07 15:51:29,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:51:29,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:29,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:51:29,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:51:29,564 INFO L87 Difference]: Start difference. First operand 98 states and 191 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:30,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:30,438 INFO L93 Difference]: Finished difference Result 166 states and 333 transitions. [2021-10-07 15:51:30,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:51:30,439 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 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 29 [2021-10-07 15:51:30,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:30,440 INFO L225 Difference]: With dead ends: 166 [2021-10-07 15:51:30,440 INFO L226 Difference]: Without dead ends: 158 [2021-10-07 15:51:30,440 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 779.4ms TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:51:30,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-07 15:51:30,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 100. [2021-10-07 15:51:30,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.9595959595959596) internal successors, (194), 99 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:30,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 194 transitions. [2021-10-07 15:51:30,444 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 194 transitions. Word has length 29 [2021-10-07 15:51:30,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:30,444 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 194 transitions. [2021-10-07 15:51:30,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:30,444 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 194 transitions. [2021-10-07 15:51:30,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-07 15:51:30,445 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:30,445 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:30,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-10-07 15:51:30,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:51:30,657 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:30,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:30,658 INFO L82 PathProgramCache]: Analyzing trace with hash -956124909, now seen corresponding path program 17 times [2021-10-07 15:51:30,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:30,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852635961] [2021-10-07 15:51:30,659 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:51:30,659 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:30,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:30,660 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:51:30,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-07 15:51:30,903 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:51:30,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:30,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:51:30,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:31,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:31,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:31,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:31,371 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:31,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852635961] [2021-10-07 15:51:31,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852635961] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:51:31,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:51:31,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-07 15:51:31,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980049237] [2021-10-07 15:51:31,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:51:31,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:31,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:51:31,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:51:31,373 INFO L87 Difference]: Start difference. First operand 100 states and 194 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:32,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:32,235 INFO L93 Difference]: Finished difference Result 164 states and 326 transitions. [2021-10-07 15:51:32,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:51:32,236 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 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 29 [2021-10-07 15:51:32,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:32,237 INFO L225 Difference]: With dead ends: 164 [2021-10-07 15:51:32,238 INFO L226 Difference]: Without dead ends: 150 [2021-10-07 15:51:32,238 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 651.9ms TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:51:32,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-07 15:51:32,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 92. [2021-10-07 15:51:32,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.934065934065934) internal successors, (176), 91 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:32,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 176 transitions. [2021-10-07 15:51:32,242 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 176 transitions. Word has length 29 [2021-10-07 15:51:32,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:32,242 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 176 transitions. [2021-10-07 15:51:32,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:32,243 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 176 transitions. [2021-10-07 15:51:32,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-07 15:51:32,243 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:32,243 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:32,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:32,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:51:32,457 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:32,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:32,457 INFO L82 PathProgramCache]: Analyzing trace with hash -2012616331, now seen corresponding path program 18 times [2021-10-07 15:51:32,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:32,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077773802] [2021-10-07 15:51:32,458 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:51:32,458 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:32,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:32,460 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:51:32,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-07 15:51:32,719 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-07 15:51:32,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:32,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:51:32,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:32,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:32,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:33,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:33,196 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:33,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077773802] [2021-10-07 15:51:33,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077773802] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:51:33,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:51:33,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-07 15:51:33,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322619040] [2021-10-07 15:51:33,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:51:33,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:33,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:51:33,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:51:33,199 INFO L87 Difference]: Start difference. First operand 92 states and 176 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:33,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:33,685 INFO L93 Difference]: Finished difference Result 102 states and 189 transitions. [2021-10-07 15:51:33,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:51:33,686 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 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 29 [2021-10-07 15:51:33,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:33,686 INFO L225 Difference]: With dead ends: 102 [2021-10-07 15:51:33,686 INFO L226 Difference]: Without dead ends: 88 [2021-10-07 15:51:33,687 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 459.4ms TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:51:33,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-07 15:51:33,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2021-10-07 15:51:33,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.8941176470588235) internal successors, (161), 85 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:33,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 161 transitions. [2021-10-07 15:51:33,690 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 161 transitions. Word has length 29 [2021-10-07 15:51:33,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:33,691 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 161 transitions. [2021-10-07 15:51:33,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:33,691 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 161 transitions. [2021-10-07 15:51:33,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-07 15:51:33,691 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:33,691 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:33,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:33,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:51:33,896 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:33,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:33,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1571605545, now seen corresponding path program 19 times [2021-10-07 15:51:33,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:33,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196015442] [2021-10-07 15:51:33,897 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:51:33,898 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:33,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:33,899 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:51:33,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-07 15:51:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:51:34,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:51:34,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:34,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:34,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:34,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:34,751 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:34,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196015442] [2021-10-07 15:51:34,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196015442] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:51:34,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:51:34,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-07 15:51:34,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661863599] [2021-10-07 15:51:34,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:51:34,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:34,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:51:34,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:51:34,753 INFO L87 Difference]: Start difference. First operand 86 states and 161 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:35,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:35,606 INFO L93 Difference]: Finished difference Result 126 states and 241 transitions. [2021-10-07 15:51:35,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 15:51:35,607 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 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 29 [2021-10-07 15:51:35,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:35,608 INFO L225 Difference]: With dead ends: 126 [2021-10-07 15:51:35,608 INFO L226 Difference]: Without dead ends: 114 [2021-10-07 15:51:35,608 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 863.5ms TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:51:35,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-07 15:51:35,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 88. [2021-10-07 15:51:35,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.8850574712643677) internal successors, (164), 87 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:35,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 164 transitions. [2021-10-07 15:51:35,619 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 164 transitions. Word has length 29 [2021-10-07 15:51:35,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:35,620 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 164 transitions. [2021-10-07 15:51:35,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:35,620 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 164 transitions. [2021-10-07 15:51:35,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-07 15:51:35,620 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:35,620 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:35,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:35,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:51:35,824 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:35,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:35,825 INFO L82 PathProgramCache]: Analyzing trace with hash -2056053777, now seen corresponding path program 20 times [2021-10-07 15:51:35,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:35,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [677943445] [2021-10-07 15:51:35,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:51:35,826 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:35,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:35,827 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:51:35,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-07 15:51:36,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:51:36,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:36,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:51:36,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:36,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:36,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:36,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:36,540 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:36,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [677943445] [2021-10-07 15:51:36,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [677943445] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:51:36,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:51:36,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-07 15:51:36,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757723192] [2021-10-07 15:51:36,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:51:36,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:36,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:51:36,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:51:36,542 INFO L87 Difference]: Start difference. First operand 88 states and 164 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:36,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:36,944 INFO L93 Difference]: Finished difference Result 96 states and 174 transitions. [2021-10-07 15:51:36,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:51:36,945 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 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 29 [2021-10-07 15:51:36,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:36,946 INFO L225 Difference]: With dead ends: 96 [2021-10-07 15:51:36,946 INFO L226 Difference]: Without dead ends: 80 [2021-10-07 15:51:36,946 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 418.9ms TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:51:36,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-07 15:51:36,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-10-07 15:51:36,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.8481012658227849) internal successors, (146), 79 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:36,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 146 transitions. [2021-10-07 15:51:36,954 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 146 transitions. Word has length 29 [2021-10-07 15:51:36,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:36,954 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 146 transitions. [2021-10-07 15:51:36,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:36,955 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 146 transitions. [2021-10-07 15:51:36,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-07 15:51:36,955 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:36,955 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:36,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:37,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:51:37,157 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:37,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:37,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1781088475, now seen corresponding path program 21 times [2021-10-07 15:51:37,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:37,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971897732] [2021-10-07 15:51:37,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:51:37,159 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:37,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:37,161 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:51:37,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-07 15:51:37,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-07 15:51:37,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:37,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:51:37,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:37,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:37,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:37,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:37,945 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:37,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971897732] [2021-10-07 15:51:37,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971897732] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:51:37,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:51:37,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-07 15:51:37,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33775150] [2021-10-07 15:51:37,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:51:37,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:37,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:51:37,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:51:37,952 INFO L87 Difference]: Start difference. First operand 80 states and 146 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:39,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:39,503 INFO L93 Difference]: Finished difference Result 142 states and 275 transitions. [2021-10-07 15:51:39,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:51:39,504 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 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 29 [2021-10-07 15:51:39,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:39,505 INFO L225 Difference]: With dead ends: 142 [2021-10-07 15:51:39,505 INFO L226 Difference]: Without dead ends: 134 [2021-10-07 15:51:39,505 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1210.6ms TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:51:39,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-07 15:51:39,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 80. [2021-10-07 15:51:39,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.8227848101265822) internal successors, (144), 79 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:39,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 144 transitions. [2021-10-07 15:51:39,508 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 144 transitions. Word has length 29 [2021-10-07 15:51:39,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:39,508 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 144 transitions. [2021-10-07 15:51:39,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:39,508 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 144 transitions. [2021-10-07 15:51:39,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-07 15:51:39,509 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:39,509 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:39,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:39,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:51:39,723 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:39,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:39,724 INFO L82 PathProgramCache]: Analyzing trace with hash 314755801, now seen corresponding path program 22 times [2021-10-07 15:51:39,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:39,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [174476360] [2021-10-07 15:51:39,725 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:51:39,725 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:39,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:39,726 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:51:39,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-07 15:51:40,000 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:51:40,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:40,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:51:40,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:40,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:40,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:40,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:40,532 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:40,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [174476360] [2021-10-07 15:51:40,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [174476360] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:51:40,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:51:40,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-07 15:51:40,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966329210] [2021-10-07 15:51:40,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:51:40,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:40,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:51:40,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:51:40,535 INFO L87 Difference]: Start difference. First operand 80 states and 144 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:41,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:41,948 INFO L93 Difference]: Finished difference Result 116 states and 216 transitions. [2021-10-07 15:51:41,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:51:41,949 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 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 29 [2021-10-07 15:51:41,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:41,950 INFO L225 Difference]: With dead ends: 116 [2021-10-07 15:51:41,950 INFO L226 Difference]: Without dead ends: 102 [2021-10-07 15:51:41,950 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1113.4ms TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:51:41,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-07 15:51:41,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 78. [2021-10-07 15:51:41,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.8051948051948052) internal successors, (139), 77 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:41,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 139 transitions. [2021-10-07 15:51:41,953 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 139 transitions. Word has length 29 [2021-10-07 15:51:41,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:41,953 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 139 transitions. [2021-10-07 15:51:41,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:41,954 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 139 transitions. [2021-10-07 15:51:41,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-07 15:51:41,954 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:41,954 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:41,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-10-07 15:51:42,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:51:42,155 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:42,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:42,156 INFO L82 PathProgramCache]: Analyzing trace with hash -351904829, now seen corresponding path program 23 times [2021-10-07 15:51:42,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:42,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1501956617] [2021-10-07 15:51:42,157 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:51:42,157 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:42,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:42,158 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:51:42,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-07 15:51:42,440 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:51:42,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:42,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:51:42,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:42,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:42,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:42,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:42,966 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:42,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1501956617] [2021-10-07 15:51:42,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1501956617] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:51:42,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:51:42,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-07 15:51:42,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902045570] [2021-10-07 15:51:42,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:51:42,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:42,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:51:42,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:51:42,968 INFO L87 Difference]: Start difference. First operand 78 states and 139 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:43,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:43,651 INFO L93 Difference]: Finished difference Result 82 states and 143 transitions. [2021-10-07 15:51:43,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:51:43,652 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 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 29 [2021-10-07 15:51:43,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:43,652 INFO L225 Difference]: With dead ends: 82 [2021-10-07 15:51:43,652 INFO L226 Difference]: Without dead ends: 74 [2021-10-07 15:51:43,652 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 706.5ms TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:51:43,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-07 15:51:43,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-07 15:51:43,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.7671232876712328) internal successors, (129), 73 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:43,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 129 transitions. [2021-10-07 15:51:43,655 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 129 transitions. Word has length 29 [2021-10-07 15:51:43,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:43,655 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 129 transitions. [2021-10-07 15:51:43,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:43,656 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 129 transitions. [2021-10-07 15:51:43,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-07 15:51:43,656 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:43,656 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:43,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:43,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:51:43,857 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:43,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:43,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1992281561, now seen corresponding path program 24 times [2021-10-07 15:51:43,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:43,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106053224] [2021-10-07 15:51:43,859 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:51:43,859 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:43,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:43,860 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:51:43,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-07 15:51:44,162 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-07 15:51:44,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:44,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:51:44,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:44,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:44,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:44,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:44,623 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:44,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106053224] [2021-10-07 15:51:44,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1106053224] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:51:44,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:51:44,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-07 15:51:44,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636083430] [2021-10-07 15:51:44,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:51:44,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:44,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:51:44,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:51:44,626 INFO L87 Difference]: Start difference. First operand 74 states and 129 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:45,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:45,352 INFO L93 Difference]: Finished difference Result 104 states and 188 transitions. [2021-10-07 15:51:45,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 15:51:45,352 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 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 29 [2021-10-07 15:51:45,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:45,353 INFO L225 Difference]: With dead ends: 104 [2021-10-07 15:51:45,353 INFO L226 Difference]: Without dead ends: 96 [2021-10-07 15:51:45,353 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 598.5ms TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:51:45,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-07 15:51:45,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 72. [2021-10-07 15:51:45,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.7464788732394365) internal successors, (124), 71 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:45,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 124 transitions. [2021-10-07 15:51:45,355 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 124 transitions. Word has length 29 [2021-10-07 15:51:45,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:45,356 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 124 transitions. [2021-10-07 15:51:45,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:45,356 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 124 transitions. [2021-10-07 15:51:45,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-07 15:51:45,356 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:45,356 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:45,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:45,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:51:45,561 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:45,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:45,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1022340125, now seen corresponding path program 25 times [2021-10-07 15:51:45,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:45,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [942397540] [2021-10-07 15:51:45,562 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:51:45,563 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:45,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:45,564 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:51:45,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-07 15:51:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:51:45,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:51:45,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:46,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:46,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:46,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:46,349 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:46,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [942397540] [2021-10-07 15:51:46,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [942397540] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:51:46,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:51:46,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-07 15:51:46,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363714042] [2021-10-07 15:51:46,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:51:46,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:46,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:51:46,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:51:46,351 INFO L87 Difference]: Start difference. First operand 72 states and 124 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:46,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:46,944 INFO L93 Difference]: Finished difference Result 78 states and 131 transitions. [2021-10-07 15:51:46,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:51:46,944 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 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 29 [2021-10-07 15:51:46,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:46,945 INFO L225 Difference]: With dead ends: 78 [2021-10-07 15:51:46,945 INFO L226 Difference]: Without dead ends: 66 [2021-10-07 15:51:46,945 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 605.0ms TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:51:46,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-07 15:51:46,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-10-07 15:51:46,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.676923076923077) internal successors, (109), 65 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:46,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 109 transitions. [2021-10-07 15:51:46,948 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 109 transitions. Word has length 29 [2021-10-07 15:51:46,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:46,948 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 109 transitions. [2021-10-07 15:51:46,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:46,948 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 109 transitions. [2021-10-07 15:51:46,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-07 15:51:46,949 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:46,949 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:46,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:47,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:51:47,150 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:47,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:47,151 INFO L82 PathProgramCache]: Analyzing trace with hash 537891893, now seen corresponding path program 26 times [2021-10-07 15:51:47,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:47,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938090621] [2021-10-07 15:51:47,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:51:47,152 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:47,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:47,153 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:51:47,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-07 15:51:47,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:51:47,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:47,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:51:47,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:47,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:47,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:47,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:47,897 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:47,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938090621] [2021-10-07 15:51:47,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938090621] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:51:47,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:51:47,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-07 15:51:47,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497533530] [2021-10-07 15:51:47,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:51:47,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:47,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:51:47,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:51:47,909 INFO L87 Difference]: Start difference. First operand 66 states and 109 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:48,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:48,160 INFO L93 Difference]: Finished difference Result 26 states and 34 transitions. [2021-10-07 15:51:48,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:51:48,161 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 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 29 [2021-10-07 15:51:48,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:48,161 INFO L225 Difference]: With dead ends: 26 [2021-10-07 15:51:48,161 INFO L226 Difference]: Without dead ends: 0 [2021-10-07 15:51:48,161 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 347.1ms TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:51:48,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-07 15:51:48,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-07 15:51:48,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:48,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-07 15:51:48,162 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2021-10-07 15:51:48,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:48,162 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-07 15:51:48,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:48,163 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-07 15:51:48,163 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-07 15:51:48,166 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 15:51:48,166 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 15:51:48,166 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 15:51:48,167 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 15:51:48,167 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 15:51:48,167 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 15:51:48,167 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 15:51:48,167 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 15:51:48,167 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-07 15:51:48,167 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-07 15:51:48,167 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-07 15:51:48,167 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-07 15:51:48,168 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 15:51:48,168 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 15:51:48,168 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 15:51:48,168 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 15:51:48,168 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-07 15:51:48,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:48,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:51:48,381 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 15:51:48,381 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 15:51:48,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 03:51:48 BasicIcfg [2021-10-07 15:51:48,384 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 15:51:48,385 INFO L168 Benchmark]: Toolchain (without parser) took 81794.64 ms. Allocated memory was 153.1 MB in the beginning and 189.8 MB in the end (delta: 36.7 MB). Free memory was 127.0 MB in the beginning and 147.3 MB in the end (delta: -20.4 MB). Peak memory consumption was 17.5 MB. Max. memory is 8.0 GB. [2021-10-07 15:51:48,385 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 153.1 MB. Free memory is still 136.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 15:51:48,385 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.15 ms. Allocated memory is still 153.1 MB. Free memory was 126.6 MB in the beginning and 115.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-07 15:51:48,386 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.52 ms. Allocated memory is still 153.1 MB. Free memory was 115.6 MB in the beginning and 113.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 15:51:48,386 INFO L168 Benchmark]: Boogie Preprocessor took 72.34 ms. Allocated memory is still 153.1 MB. Free memory was 113.8 MB in the beginning and 112.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 15:51:48,387 INFO L168 Benchmark]: RCFGBuilder took 933.74 ms. Allocated memory is still 153.1 MB. Free memory was 112.3 MB in the beginning and 123.0 MB in the end (delta: -10.6 MB). Peak memory consumption was 8.5 MB. Max. memory is 8.0 GB. [2021-10-07 15:51:48,387 INFO L168 Benchmark]: TraceAbstraction took 80333.37 ms. Allocated memory was 153.1 MB in the beginning and 189.8 MB in the end (delta: 36.7 MB). Free memory was 122.5 MB in the beginning and 147.3 MB in the end (delta: -24.8 MB). Peak memory consumption was 13.2 MB. Max. memory is 8.0 GB. [2021-10-07 15:51:48,390 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 153.1 MB. Free memory is still 136.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 348.15 ms. Allocated memory is still 153.1 MB. Free memory was 126.6 MB in the beginning and 115.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 92.52 ms. Allocated memory is still 153.1 MB. Free memory was 115.6 MB in the beginning and 113.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 72.34 ms. Allocated memory is still 153.1 MB. Free memory was 113.8 MB in the beginning and 112.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 933.74 ms. Allocated memory is still 153.1 MB. Free memory was 112.3 MB in the beginning and 123.0 MB in the end (delta: -10.6 MB). Peak memory consumption was 8.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 80333.37 ms. Allocated memory was 153.1 MB in the beginning and 189.8 MB in the end (delta: 36.7 MB). Free memory was 122.5 MB in the beginning and 147.3 MB in the end (delta: -24.8 MB). Peak memory consumption was 13.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12478.3ms, 147 PlacesBefore, 56 PlacesAfterwards, 142 TransitionsBefore, 49 TransitionsAfterwards, 2512 CoEnabledTransitionPairs, 7 FixpointIterations, 79 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 12 ConcurrentYvCompositions, 2 ChoiceCompositions, 153 TotalNumberOfCompositions, 8051 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4679, positive: 4491, positive conditional: 0, positive unconditional: 4491, negative: 188, negative conditional: 0, negative unconditional: 188, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2110, positive: 2042, positive conditional: 0, positive unconditional: 2042, negative: 68, negative conditional: 0, negative unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2110, positive: 1983, positive conditional: 0, positive unconditional: 1983, negative: 127, negative conditional: 0, negative unconditional: 127, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 127, positive: 59, positive conditional: 0, positive unconditional: 59, negative: 68, negative conditional: 0, negative unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 446, positive: 54, positive conditional: 0, positive unconditional: 54, negative: 392, negative conditional: 0, negative unconditional: 392, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4679, positive: 2449, positive conditional: 0, positive unconditional: 2449, negative: 120, negative conditional: 0, negative unconditional: 120, unknown: 2110, unknown conditional: 0, unknown unconditional: 2110] , Statistics on independence cache: Total cache size (in pairs): 391, Positive cache size: 360, Positive conditional cache size: 0, Positive unconditional cache size: 360, Negative cache size: 31, Negative conditional cache size: 0, Negative unconditional cache size: 31 - 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 - PositiveResult [Line: 96]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 96]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 97]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 97]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 98]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 98]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 99]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 99]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 100]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 100]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 101]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 101]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 104]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 81]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 181 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 80170.9ms, OverallIterations: 33, TraceHistogramMax: 1, EmptinessCheckTime: 54.5ms, AutomataDifference: 38072.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12618.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1421 SDtfs, 3562 SDslu, 8163 SDs, 0 SdLazy, 7054 SolverSat, 810 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17684.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1732 GetRequests, 1189 SyntacticMatches, 2 SemanticMatches, 541 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1421 ImplicationChecksByTransitivity, 24450.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1379occurred in iteration=0, InterpolantAutomatonStates: 424, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 803.5ms AutomataMinimizationTime, 33 MinimizatonAttempts, 1950 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 369.4ms SsaConstructionTime, 1463.8ms SatisfiabilityAnalysisTime, 15075.3ms InterpolantComputationTime, 785 NumberOfCodeBlocks, 785 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 1504 ConstructedInterpolants, 12 QuantifiedInterpolants, 6948 SizeOfPredicates, 251 NumberOfNonLiveVariables, 3053 ConjunctsInSsa, 298 ConjunctsInUnsatCore, 66 InterpolantComputations, 66 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-07 15:51:48,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...