/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/bench-exp2x3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 16:35:18,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 16:35:18,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 16:35:18,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 16:35:18,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-08 16:35:18,736 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-08 16:35:18,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-08 16:35:18,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-08 16:35:18,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-08 16:35:18,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-08 16:35:18,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-08 16:35:18,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-08 16:35:18,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-08 16:35:18,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-08 16:35:18,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-08 16:35:18,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-08 16:35:18,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-08 16:35:18,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 16:35:18,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 16:35:18,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 16:35:18,815 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-08 16:35:18,867 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 16:35:18,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 16:35:18,868 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 16:35:18,868 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 16:35:18,872 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 16:35:18,872 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 16:35:18,873 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 16:35:18,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 16:35:18,874 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 16:35:18,874 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 16:35:18,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 16:35:18,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 16:35:18,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 16:35:18,876 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-08 16:35:18,876 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-08 16:35:18,877 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-08 16:35:18,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 16:35:18,877 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-08 16:35:18,878 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-08 16:35:18,878 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-08 16:35:18,878 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 16:35:18,878 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 16:35:18,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 16:35:18,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 16:35:18,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 16:35:18,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 16:35:18,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 16:35:18,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 16:35:18,880 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-08 16:35:18,880 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-08 16:35:18,881 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 16:35:18,881 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-08 16:35:18,881 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 16:35:19,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 16:35:19,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 16:35:19,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 16:35:19,359 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 16:35:19,360 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 16:35:19,361 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp2x3.wvr.c [2021-10-08 16:35:19,441 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c85554b61/7059ec5d831b45099c80adbeabb78508/FLAG962423e8e [2021-10-08 16:35:20,076 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 16:35:20,076 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x3.wvr.c [2021-10-08 16:35:20,089 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c85554b61/7059ec5d831b45099c80adbeabb78508/FLAG962423e8e [2021-10-08 16:35:20,122 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c85554b61/7059ec5d831b45099c80adbeabb78508 [2021-10-08 16:35:20,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 16:35:20,145 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-08 16:35:20,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 16:35:20,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 16:35:20,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 16:35:20,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 04:35:20" (1/1) ... [2021-10-08 16:35:20,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7566a981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:20, skipping insertion in model container [2021-10-08 16:35:20,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 04:35:20" (1/1) ... [2021-10-08 16:35:20,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 16:35:20,227 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 16:35:20,483 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/bench-exp2x3.wvr.c[2231,2244] [2021-10-08 16:35:20,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:35:20,509 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 16:35:20,560 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/bench-exp2x3.wvr.c[2231,2244] [2021-10-08 16:35:20,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:35:20,585 INFO L208 MainTranslator]: Completed translation [2021-10-08 16:35:20,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:20 WrapperNode [2021-10-08 16:35:20,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 16:35:20,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 16:35:20,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 16:35:20,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 16:35:20,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:20" (1/1) ... [2021-10-08 16:35:20,625 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:20" (1/1) ... [2021-10-08 16:35:20,669 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 16:35:20,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 16:35:20,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 16:35:20,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 16:35:20,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:20" (1/1) ... [2021-10-08 16:35:20,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:20" (1/1) ... [2021-10-08 16:35:20,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:20" (1/1) ... [2021-10-08 16:35:20,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:20" (1/1) ... [2021-10-08 16:35:20,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:20" (1/1) ... [2021-10-08 16:35:20,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:20" (1/1) ... [2021-10-08 16:35:20,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:20" (1/1) ... [2021-10-08 16:35:20,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 16:35:20,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 16:35:20,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 16:35:20,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 16:35:20,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:20" (1/1) ... [2021-10-08 16:35:20,754 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 16:35:20,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:35:20,792 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-08 16:35:20,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-08 16:35:20,868 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 16:35:20,868 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 16:35:20,869 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 16:35:20,869 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 16:35:20,869 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-08 16:35:20,869 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-08 16:35:20,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-08 16:35:20,869 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-08 16:35:20,870 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-08 16:35:20,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 16:35:20,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-08 16:35:20,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 16:35:20,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 16:35:20,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 16:35:20,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-08 16:35:20,874 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 16:35:21,416 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 16:35:21,417 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-08 16:35:21,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:35:21 BoogieIcfgContainer [2021-10-08 16:35:21,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 16:35:21,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 16:35:21,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 16:35:21,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 16:35:21,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 04:35:20" (1/3) ... [2021-10-08 16:35:21,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241b1a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 04:35:21, skipping insertion in model container [2021-10-08 16:35:21,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:20" (2/3) ... [2021-10-08 16:35:21,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241b1a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 04:35:21, skipping insertion in model container [2021-10-08 16:35:21,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:35:21" (3/3) ... [2021-10-08 16:35:21,431 INFO L111 eAbstractionObserver]: Analyzing ICFG bench-exp2x3.wvr.c [2021-10-08 16:35:21,437 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 16:35:21,438 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-10-08 16:35:21,438 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 16:35:21,500 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:21,501 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:21,501 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:21,501 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:21,502 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:21,502 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:21,503 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:21,503 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:21,504 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:21,504 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:21,505 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:21,505 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:21,506 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:21,506 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:21,506 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:21,507 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:21,510 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:21,511 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:21,516 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:21,517 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:21,520 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:21,521 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:21,524 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:21,524 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:21,539 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-08 16:35:21,589 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 16:35:21,605 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-08 16:35:21,609 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-10-08 16:35:21,668 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 16:35:21,685 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 140 places, 137 transitions, 306 flow [2021-10-08 16:35:21,694 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 140 places, 137 transitions, 306 flow [2021-10-08 16:35:21,697 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 140 places, 137 transitions, 306 flow [2021-10-08 16:35:21,844 INFO L129 PetriNetUnfolder]: 10/133 cut-off events. [2021-10-08 16:35:21,845 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-08 16:35:21,852 INFO L84 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 133 events. 10/133 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 95 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2021-10-08 16:35:21,859 INFO L116 LiptonReduction]: Number of co-enabled transitions 1608 [2021-10-08 16:35:40,699 INFO L131 LiptonReduction]: Checked pairs total: 2240 [2021-10-08 16:35:40,700 INFO L133 LiptonReduction]: Total number of compositions: 131 [2021-10-08 16:35:40,716 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 47 transitions, 126 flow [2021-10-08 16:35:40,745 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 183 states, 165 states have (on average 4.212121212121212) internal successors, (695), 182 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:35:40,749 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 165 states have (on average 4.212121212121212) internal successors, (695), 182 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:35:40,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-08 16:35:40,754 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:35:40,755 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-08 16:35:40,755 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:35:40,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:35:40,762 INFO L82 PathProgramCache]: Analyzing trace with hash 503, now seen corresponding path program 1 times [2021-10-08 16:35:40,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:35:40,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857476112] [2021-10-08 16:35:40,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:35:40,775 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:35:40,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:35:40,779 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:35:40,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-08 16:35:40,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:35:40,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-08 16:35:40,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:35:40,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:40,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:35:40,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:40,868 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:35:40,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857476112] [2021-10-08 16:35:40,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1857476112] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:35:40,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:35:40,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-08 16:35:40,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589922366] [2021-10-08 16:35:40,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-08 16:35:40,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:35:40,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-08 16:35:40,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-08 16:35:40,896 INFO L87 Difference]: Start difference. First operand has 183 states, 165 states have (on average 4.212121212121212) internal successors, (695), 182 states have internal predecessors, (695), 0 states have call successors, (0), 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) [2021-10-08 16:35:40,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:35:40,926 INFO L93 Difference]: Finished difference Result 180 states and 692 transitions. [2021-10-08 16:35:40,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-08 16:35:40,928 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 [2021-10-08 16:35:40,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:35:40,944 INFO L225 Difference]: With dead ends: 180 [2021-10-08 16:35:40,944 INFO L226 Difference]: Without dead ends: 180 [2021-10-08 16:35:40,946 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 [2021-10-08 16:35:40,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-08 16:35:41,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-10-08 16:35:41,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 165 states have (on average 4.193939393939394) internal successors, (692), 179 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:35:41,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 692 transitions. [2021-10-08 16:35:41,012 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 692 transitions. Word has length 1 [2021-10-08 16:35:41,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:35:41,013 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 692 transitions. [2021-10-08 16:35:41,013 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) [2021-10-08 16:35:41,013 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 692 transitions. [2021-10-08 16:35:41,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 16:35:41,014 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:35:41,014 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 16:35:41,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-08 16:35:41,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:35:41,226 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:35:41,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:35:41,228 INFO L82 PathProgramCache]: Analyzing trace with hash 495118, now seen corresponding path program 1 times [2021-10-08 16:35:41,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:35:41,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159190529] [2021-10-08 16:35:41,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:35:41,231 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:35:41,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:35:41,232 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:35:41,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-08 16:35:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:35:41,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 16:35:41,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:35:41,783 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-08 16:35:41,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 168 treesize of output 209 [2021-10-08 16:35:46,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:46,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:35:46,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:46,052 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:35:46,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159190529] [2021-10-08 16:35:46,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [159190529] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:35:46,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:35:46,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 16:35:46,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606502521] [2021-10-08 16:35:46,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:35:46,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:35:46,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:35:46,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:35:46,056 INFO L87 Difference]: Start difference. First operand 180 states and 692 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) [2021-10-08 16:35:46,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:35:46,156 INFO L93 Difference]: Finished difference Result 170 states and 656 transitions. [2021-10-08 16:35:46,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:35:46,158 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 [2021-10-08 16:35:46,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:35:46,161 INFO L225 Difference]: With dead ends: 170 [2021-10-08 16:35:46,162 INFO L226 Difference]: Without dead ends: 170 [2021-10-08 16:35:46,163 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:35:46,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-10-08 16:35:46,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-10-08 16:35:46,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 157 states have (on average 4.178343949044586) internal successors, (656), 169 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:35:46,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 656 transitions. [2021-10-08 16:35:46,193 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 656 transitions. Word has length 3 [2021-10-08 16:35:46,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:35:46,197 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 656 transitions. [2021-10-08 16:35:46,197 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) [2021-10-08 16:35:46,197 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 656 transitions. [2021-10-08 16:35:46,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 16:35:46,197 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:35:46,198 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 16:35:46,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-08 16:35:46,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:35:46,410 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:35:46,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:35:46,412 INFO L82 PathProgramCache]: Analyzing trace with hash 495120, now seen corresponding path program 1 times [2021-10-08 16:35:46,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:35:46,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1708579818] [2021-10-08 16:35:46,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:35:46,416 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:35:46,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:35:46,419 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:35:46,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-08 16:35:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:35:46,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:35:46,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:35:46,702 INFO L354 Elim1Store]: treesize reduction 237, result has 17.1 percent of original size [2021-10-08 16:35:46,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 43 treesize of output 75 [2021-10-08 16:35:46,712 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 130 treesize of output 126 [2021-10-08 16:35:47,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:47,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:35:47,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:47,582 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:35:47,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1708579818] [2021-10-08 16:35:47,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1708579818] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:35:47,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:35:47,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 16:35:47,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952743257] [2021-10-08 16:35:47,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:35:47,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:35:47,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:35:47,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:35:47,586 INFO L87 Difference]: Start difference. First operand 170 states and 656 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) [2021-10-08 16:35:47,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:35:47,660 INFO L93 Difference]: Finished difference Result 160 states and 620 transitions. [2021-10-08 16:35:47,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:35:47,661 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 [2021-10-08 16:35:47,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:35:47,664 INFO L225 Difference]: With dead ends: 160 [2021-10-08 16:35:47,664 INFO L226 Difference]: Without dead ends: 160 [2021-10-08 16:35:47,665 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:35:47,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-08 16:35:47,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-10-08 16:35:47,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 149 states have (on average 4.1610738255033555) internal successors, (620), 159 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:35:47,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 620 transitions. [2021-10-08 16:35:47,679 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 620 transitions. Word has length 3 [2021-10-08 16:35:47,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:35:47,680 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 620 transitions. [2021-10-08 16:35:47,680 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) [2021-10-08 16:35:47,680 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 620 transitions. [2021-10-08 16:35:47,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 16:35:47,681 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:35:47,681 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 16:35:47,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-08 16:35:47,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:35:47,895 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:35:47,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:35:47,896 INFO L82 PathProgramCache]: Analyzing trace with hash 475820260, now seen corresponding path program 1 times [2021-10-08 16:35:47,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:35:47,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1167522419] [2021-10-08 16:35:47,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:35:47,897 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:35:47,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:35:47,899 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:35:47,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-08 16:35:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:35:47,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 16:35:47,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:35:48,194 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-08 16:35:48,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 70 [2021-10-08 16:35:48,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:48,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:35:48,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:48,810 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:35:48,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1167522419] [2021-10-08 16:35:48,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1167522419] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:35:48,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:35:48,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 16:35:48,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921528796] [2021-10-08 16:35:48,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:35:48,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:35:48,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:35:48,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:35:48,813 INFO L87 Difference]: Start difference. First operand 160 states and 620 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) [2021-10-08 16:35:48,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:35:48,860 INFO L93 Difference]: Finished difference Result 152 states and 596 transitions. [2021-10-08 16:35:48,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:35:48,861 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 [2021-10-08 16:35:48,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:35:48,863 INFO L225 Difference]: With dead ends: 152 [2021-10-08 16:35:48,864 INFO L226 Difference]: Without dead ends: 152 [2021-10-08 16:35:48,864 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:35:48,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-08 16:35:48,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-10-08 16:35:48,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 143 states have (on average 4.1678321678321675) internal successors, (596), 151 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:35:48,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 596 transitions. [2021-10-08 16:35:48,876 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 596 transitions. Word has length 5 [2021-10-08 16:35:48,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:35:48,876 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 596 transitions. [2021-10-08 16:35:48,876 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) [2021-10-08 16:35:48,876 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 596 transitions. [2021-10-08 16:35:48,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 16:35:48,877 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:35:48,877 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 16:35:48,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-08 16:35:49,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:35:49,090 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:35:49,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:35:49,091 INFO L82 PathProgramCache]: Analyzing trace with hash 475820261, now seen corresponding path program 1 times [2021-10-08 16:35:49,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:35:49,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032759893] [2021-10-08 16:35:49,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:35:49,093 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:35:49,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:35:49,094 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:35:49,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-08 16:35:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:35:49,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 16:35:49,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:35:49,356 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-08 16:35:49,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 60 [2021-10-08 16:35:49,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:49,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:35:49,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:49,514 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:35:49,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032759893] [2021-10-08 16:35:49,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032759893] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:35:49,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:35:49,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 16:35:49,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078974576] [2021-10-08 16:35:49,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:35:49,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:35:49,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:35:49,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:35:49,517 INFO L87 Difference]: Start difference. First operand 152 states and 596 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) [2021-10-08 16:35:49,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:35:49,575 INFO L93 Difference]: Finished difference Result 144 states and 572 transitions. [2021-10-08 16:35:49,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:35:49,576 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 [2021-10-08 16:35:49,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:35:49,578 INFO L225 Difference]: With dead ends: 144 [2021-10-08 16:35:49,578 INFO L226 Difference]: Without dead ends: 144 [2021-10-08 16:35:49,579 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:35:49,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-08 16:35:49,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-10-08 16:35:49,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 137 states have (on average 4.175182481751825) internal successors, (572), 143 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:35:49,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 572 transitions. [2021-10-08 16:35:49,588 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 572 transitions. Word has length 5 [2021-10-08 16:35:49,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:35:49,588 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 572 transitions. [2021-10-08 16:35:49,589 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) [2021-10-08 16:35:49,589 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 572 transitions. [2021-10-08 16:35:49,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 16:35:49,590 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:35:49,590 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:35:49,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-08 16:35:49,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:35:49,803 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:35:49,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:35:49,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1996749239, now seen corresponding path program 1 times [2021-10-08 16:35:49,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:35:49,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [206300229] [2021-10-08 16:35:49,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:35:49,805 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:35:49,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:35:49,806 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:35:49,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-08 16:35:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:35:49,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 16:35:49,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:35:50,092 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-08 16:35:50,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 60 [2021-10-08 16:35:50,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:50,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:35:50,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:50,298 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:35:50,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [206300229] [2021-10-08 16:35:50,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [206300229] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:35:50,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:35:50,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 16:35:50,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243741953] [2021-10-08 16:35:50,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:35:50,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:35:50,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:35:50,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:35:50,301 INFO L87 Difference]: Start difference. First operand 144 states and 572 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) [2021-10-08 16:35:50,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:35:50,338 INFO L93 Difference]: Finished difference Result 134 states and 536 transitions. [2021-10-08 16:35:50,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:35:50,339 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 [2021-10-08 16:35:50,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:35:50,341 INFO L225 Difference]: With dead ends: 134 [2021-10-08 16:35:50,341 INFO L226 Difference]: Without dead ends: 134 [2021-10-08 16:35:50,341 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:35:50,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-08 16:35:50,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-10-08 16:35:50,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 129 states have (on average 4.155038759689923) internal successors, (536), 133 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:35:50,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 536 transitions. [2021-10-08 16:35:50,349 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 536 transitions. Word has length 7 [2021-10-08 16:35:50,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:35:50,349 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 536 transitions. [2021-10-08 16:35:50,350 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) [2021-10-08 16:35:50,350 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 536 transitions. [2021-10-08 16:35:50,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 16:35:50,350 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:35:50,351 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:35:50,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-08 16:35:50,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:35:50,565 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:35:50,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:35:50,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1996749238, now seen corresponding path program 1 times [2021-10-08 16:35:50,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:35:50,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99081613] [2021-10-08 16:35:50,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:35:50,568 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:35:50,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:35:50,569 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:35:50,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-08 16:35:50,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:35:50,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 16:35:50,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:35:50,853 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-08 16:35:50,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 70 [2021-10-08 16:35:51,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:51,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:35:51,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:51,451 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:35:51,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99081613] [2021-10-08 16:35:51,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99081613] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:35:51,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:35:51,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 16:35:51,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602114093] [2021-10-08 16:35:51,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:35:51,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:35:51,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:35:51,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:35:51,454 INFO L87 Difference]: Start difference. First operand 134 states and 536 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:35:51,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:35:51,489 INFO L93 Difference]: Finished difference Result 124 states and 500 transitions. [2021-10-08 16:35:51,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:35:51,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-08 16:35:51,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:35:51,492 INFO L225 Difference]: With dead ends: 124 [2021-10-08 16:35:51,492 INFO L226 Difference]: Without dead ends: 124 [2021-10-08 16:35:51,492 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:35:51,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-08 16:35:51,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-10-08 16:35:51,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 121 states have (on average 4.132231404958677) internal successors, (500), 123 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:35:51,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 500 transitions. [2021-10-08 16:35:51,500 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 500 transitions. Word has length 7 [2021-10-08 16:35:51,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:35:51,500 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 500 transitions. [2021-10-08 16:35:51,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:35:51,500 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 500 transitions. [2021-10-08 16:35:51,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 16:35:51,501 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:35:51,501 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:35:51,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-08 16:35:51,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:35:51,717 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:35:51,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:35:51,717 INFO L82 PathProgramCache]: Analyzing trace with hash -974350728, now seen corresponding path program 1 times [2021-10-08 16:35:51,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:35:51,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1309008496] [2021-10-08 16:35:51,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:35:51,718 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:35:51,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:35:51,720 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:35:51,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-08 16:35:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:35:51,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 16:35:51,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:35:51,991 INFO L354 Elim1Store]: treesize reduction 237, result has 17.1 percent of original size [2021-10-08 16:35:51,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 72 [2021-10-08 16:35:51,999 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 141 treesize of output 139 [2021-10-08 16:35:52,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:52,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:35:52,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:52,934 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:35:52,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1309008496] [2021-10-08 16:35:52,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1309008496] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:35:52,934 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:35:52,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-08 16:35:52,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471007779] [2021-10-08 16:35:52,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:35:52,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:35:52,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:35:52,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:35:52,936 INFO L87 Difference]: Start difference. First operand 124 states and 500 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:35:52,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:35:52,984 INFO L93 Difference]: Finished difference Result 108 states and 420 transitions. [2021-10-08 16:35:52,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:35:52,987 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-08 16:35:52,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:35:52,988 INFO L225 Difference]: With dead ends: 108 [2021-10-08 16:35:52,988 INFO L226 Difference]: Without dead ends: 108 [2021-10-08 16:35:52,988 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 123.3ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:35:52,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-08 16:35:52,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-10-08 16:35:52,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 106 states have (on average 3.9622641509433962) internal successors, (420), 107 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:35:52,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 420 transitions. [2021-10-08 16:35:52,994 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 420 transitions. Word has length 9 [2021-10-08 16:35:52,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:35:52,995 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 420 transitions. [2021-10-08 16:35:52,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:35:52,995 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 420 transitions. [2021-10-08 16:35:52,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 16:35:52,996 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:35:52,996 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:35:53,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-08 16:35:53,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:35:53,207 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:35:53,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:35:53,208 INFO L82 PathProgramCache]: Analyzing trace with hash -974350726, now seen corresponding path program 1 times [2021-10-08 16:35:53,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:35:53,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056637167] [2021-10-08 16:35:53,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:35:53,212 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:35:53,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:35:53,218 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:35:53,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-08 16:35:53,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:35:53,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:35:53,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:35:53,573 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-08 16:35:53,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 70 [2021-10-08 16:35:54,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:54,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:35:54,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:54,142 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:35:54,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056637167] [2021-10-08 16:35:54,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056637167] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:35:54,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:35:54,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-08 16:35:54,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337925766] [2021-10-08 16:35:54,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 16:35:54,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:35:54,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 16:35:54,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:35:54,150 INFO L87 Difference]: Start difference. First operand 108 states and 420 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:35:54,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:35:54,201 INFO L93 Difference]: Finished difference Result 92 states and 340 transitions. [2021-10-08 16:35:54,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:35:54,203 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-08 16:35:54,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:35:54,204 INFO L225 Difference]: With dead ends: 92 [2021-10-08 16:35:54,204 INFO L226 Difference]: Without dead ends: 92 [2021-10-08 16:35:54,206 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 77.9ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:35:54,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-08 16:35:54,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-10-08 16:35:54,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 3.7362637362637363) internal successors, (340), 91 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:35:54,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 340 transitions. [2021-10-08 16:35:54,213 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 340 transitions. Word has length 9 [2021-10-08 16:35:54,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:35:54,214 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 340 transitions. [2021-10-08 16:35:54,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:35:54,214 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 340 transitions. [2021-10-08 16:35:54,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:35:54,218 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:35:54,218 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] [2021-10-08 16:35:54,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-08 16:35:54,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:35:54,419 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:35:54,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:35:54,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1904913136, now seen corresponding path program 1 times [2021-10-08 16:35:54,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:35:54,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2131566123] [2021-10-08 16:35:54,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:35:54,421 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:35:54,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:35:54,422 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:35:54,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-08 16:35:54,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:35:54,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 16:35:54,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:35:54,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:54,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:35:55,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:55,066 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:35:55,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2131566123] [2021-10-08 16:35:55,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2131566123] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:35:55,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:35:55,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 16:35:55,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329976937] [2021-10-08 16:35:55,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:35:55,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:35:55,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:35:55,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:35:55,069 INFO L87 Difference]: Start difference. First operand 92 states and 340 transitions. Second operand has 4 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:35:55,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:35:55,107 INFO L93 Difference]: Finished difference Result 181 states and 677 transitions. [2021-10-08 16:35:55,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:35:55,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:35:55,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:35:55,110 INFO L225 Difference]: With dead ends: 181 [2021-10-08 16:35:55,110 INFO L226 Difference]: Without dead ends: 172 [2021-10-08 16:35:55,111 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:35:55,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-08 16:35:55,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2021-10-08 16:35:55,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 3.7953216374269005) internal successors, (649), 171 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:35:55,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 649 transitions. [2021-10-08 16:35:55,120 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 649 transitions. Word has length 21 [2021-10-08 16:35:55,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:35:55,121 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 649 transitions. [2021-10-08 16:35:55,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:35:55,121 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 649 transitions. [2021-10-08 16:35:55,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 16:35:55,123 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:35:55,124 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] [2021-10-08 16:35:55,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-08 16:35:55,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:35:55,338 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:35:55,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:35:55,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1978973352, now seen corresponding path program 1 times [2021-10-08 16:35:55,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:35:55,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1606874703] [2021-10-08 16:35:55,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:35:55,340 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:35:55,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:35:55,341 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:35:55,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-08 16:35:55,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:35:55,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:35:55,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:35:55,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:55,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:35:55,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:55,924 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:35:55,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1606874703] [2021-10-08 16:35:55,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1606874703] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 16:35:55,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:35:55,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-10-08 16:35:55,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113332067] [2021-10-08 16:35:55,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:35:55,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:35:55,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:35:55,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:35:55,926 INFO L87 Difference]: Start difference. First operand 172 states and 649 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:35:56,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:35:56,040 INFO L93 Difference]: Finished difference Result 340 states and 1257 transitions. [2021-10-08 16:35:56,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:35:56,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 16:35:56,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:35:56,044 INFO L225 Difference]: With dead ends: 340 [2021-10-08 16:35:56,045 INFO L226 Difference]: Without dead ends: 340 [2021-10-08 16:35:56,045 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 134.7ms TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:35:56,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-10-08 16:35:56,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 220. [2021-10-08 16:35:56,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 3.990867579908676) internal successors, (874), 219 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:35:56,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 874 transitions. [2021-10-08 16:35:56,078 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 874 transitions. Word has length 22 [2021-10-08 16:35:56,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:35:56,078 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 874 transitions. [2021-10-08 16:35:56,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:35:56,079 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 874 transitions. [2021-10-08 16:35:56,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 16:35:56,080 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:35:56,080 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] [2021-10-08 16:35:56,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-08 16:35:56,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:35:56,294 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:35:56,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:35:56,296 INFO L82 PathProgramCache]: Analyzing trace with hash -898077408, now seen corresponding path program 2 times [2021-10-08 16:35:56,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:35:56,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149762485] [2021-10-08 16:35:56,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:35:56,297 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:35:56,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:35:56,298 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:35:56,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-08 16:35:56,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:35:56,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:35:56,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:35:56,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:35:56,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:56,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:35:56,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:56,831 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:35:56,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149762485] [2021-10-08 16:35:56,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1149762485] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 16:35:56,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:35:56,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-10-08 16:35:56,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971547879] [2021-10-08 16:35:56,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:35:56,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:35:56,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:35:56,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:35:56,833 INFO L87 Difference]: Start difference. First operand 220 states and 874 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:35:56,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:35:56,955 INFO L93 Difference]: Finished difference Result 290 states and 1043 transitions. [2021-10-08 16:35:56,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:35:56,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 16:35:56,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:35:56,960 INFO L225 Difference]: With dead ends: 290 [2021-10-08 16:35:56,960 INFO L226 Difference]: Without dead ends: 284 [2021-10-08 16:35:56,960 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 120.6ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-08 16:35:56,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-10-08 16:35:56,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 250. [2021-10-08 16:35:56,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 3.7630522088353415) internal successors, (937), 249 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:35:56,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 937 transitions. [2021-10-08 16:35:56,978 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 937 transitions. Word has length 22 [2021-10-08 16:35:56,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:35:56,979 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 937 transitions. [2021-10-08 16:35:56,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:35:56,979 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 937 transitions. [2021-10-08 16:35:56,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 16:35:56,981 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:35:56,981 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] [2021-10-08 16:35:57,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-08 16:35:57,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:35:57,201 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:35:57,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:35:57,201 INFO L82 PathProgramCache]: Analyzing trace with hash 304894006, now seen corresponding path program 1 times [2021-10-08 16:35:57,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:35:57,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358664699] [2021-10-08 16:35:57,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:35:57,202 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:35:57,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:35:57,203 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:35:57,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-08 16:35:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:35:57,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:35:57,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:35:57,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:57,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:35:57,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:57,732 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:35:57,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1358664699] [2021-10-08 16:35:57,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1358664699] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:35:57,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:35:57,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-08 16:35:57,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537571765] [2021-10-08 16:35:57,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:35:57,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:35:57,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:35:57,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:35:57,735 INFO L87 Difference]: Start difference. First operand 250 states and 937 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:35:58,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:35:58,092 INFO L93 Difference]: Finished difference Result 728 states and 2759 transitions. [2021-10-08 16:35:58,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 16:35:58,092 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 16:35:58,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:35:58,100 INFO L225 Difference]: With dead ends: 728 [2021-10-08 16:35:58,101 INFO L226 Difference]: Without dead ends: 728 [2021-10-08 16:35:58,101 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 141.4ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:35:58,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2021-10-08 16:35:58,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 386. [2021-10-08 16:35:58,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 4.363636363636363) internal successors, (1680), 385 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:35:58,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1680 transitions. [2021-10-08 16:35:58,127 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1680 transitions. Word has length 22 [2021-10-08 16:35:58,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:35:58,127 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 1680 transitions. [2021-10-08 16:35:58,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:35:58,128 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1680 transitions. [2021-10-08 16:35:58,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 16:35:58,130 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:35:58,130 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] [2021-10-08 16:35:58,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-08 16:35:58,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:35:58,343 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:35:58,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:35:58,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1336102116, now seen corresponding path program 1 times [2021-10-08 16:35:58,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:35:58,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867059541] [2021-10-08 16:35:58,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:35:58,346 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:35:58,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:35:58,347 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:35:58,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-08 16:35:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:35:58,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:35:58,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:35:58,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:58,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:35:58,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:58,847 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:35:58,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867059541] [2021-10-08 16:35:58,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867059541] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 16:35:58,847 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:35:58,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-10-08 16:35:58,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108232160] [2021-10-08 16:35:58,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:35:58,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:35:58,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:35:58,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:35:58,849 INFO L87 Difference]: Start difference. First operand 386 states and 1680 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:35:58,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:35:58,935 INFO L93 Difference]: Finished difference Result 476 states and 1893 transitions. [2021-10-08 16:35:58,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:35:58,936 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 16:35:58,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:35:58,940 INFO L225 Difference]: With dead ends: 476 [2021-10-08 16:35:58,941 INFO L226 Difference]: Without dead ends: 444 [2021-10-08 16:35:58,941 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 68.5ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:35:58,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-10-08 16:35:58,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 420. [2021-10-08 16:35:58,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 419 states have (on average 4.202863961813843) internal successors, (1761), 419 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:35:58,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 1761 transitions. [2021-10-08 16:35:58,962 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 1761 transitions. Word has length 22 [2021-10-08 16:35:58,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:35:58,962 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 1761 transitions. [2021-10-08 16:35:58,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:35:58,962 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 1761 transitions. [2021-10-08 16:35:58,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 16:35:58,965 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:35:58,965 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] [2021-10-08 16:35:58,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-08 16:35:59,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:35:59,180 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:35:59,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:35:59,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1911769630, now seen corresponding path program 2 times [2021-10-08 16:35:59,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:35:59,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470609025] [2021-10-08 16:35:59,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:35:59,183 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:35:59,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:35:59,184 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:35:59,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-08 16:35:59,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:35:59,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:35:59,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:35:59,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:35:59,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:59,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:35:59,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:59,795 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:35:59,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470609025] [2021-10-08 16:35:59,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [470609025] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:35:59,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:35:59,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-08 16:35:59,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698354691] [2021-10-08 16:35:59,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:35:59,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:35:59,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:35:59,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:35:59,797 INFO L87 Difference]: Start difference. First operand 420 states and 1761 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:00,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:00,201 INFO L93 Difference]: Finished difference Result 666 states and 2593 transitions. [2021-10-08 16:36:00,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 16:36:00,202 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 16:36:00,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:00,209 INFO L225 Difference]: With dead ends: 666 [2021-10-08 16:36:00,209 INFO L226 Difference]: Without dead ends: 666 [2021-10-08 16:36:00,210 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 152.2ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:36:00,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-10-08 16:36:00,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 456. [2021-10-08 16:36:00,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 455 states have (on average 4.298901098901099) internal successors, (1956), 455 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:00,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 1956 transitions. [2021-10-08 16:36:00,238 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 1956 transitions. Word has length 22 [2021-10-08 16:36:00,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:00,239 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 1956 transitions. [2021-10-08 16:36:00,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:00,239 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 1956 transitions. [2021-10-08 16:36:00,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 16:36:00,242 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:00,242 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] [2021-10-08 16:36:00,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:00,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:36:00,456 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:36:00,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:00,457 INFO L82 PathProgramCache]: Analyzing trace with hash 607348640, now seen corresponding path program 1 times [2021-10-08 16:36:00,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:00,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410892200] [2021-10-08 16:36:00,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:00,458 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:00,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:00,459 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:36:00,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-08 16:36:00,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:00,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:36:00,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:00,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:00,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:01,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:01,084 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:01,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410892200] [2021-10-08 16:36:01,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1410892200] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:01,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:01,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2021-10-08 16:36:01,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398510673] [2021-10-08 16:36:01,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 16:36:01,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:01,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 16:36:01,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-08 16:36:01,090 INFO L87 Difference]: Start difference. First operand 456 states and 1956 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:01,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:01,784 INFO L93 Difference]: Finished difference Result 1446 states and 5943 transitions. [2021-10-08 16:36:01,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:36:01,785 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 16:36:01,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:01,801 INFO L225 Difference]: With dead ends: 1446 [2021-10-08 16:36:01,802 INFO L226 Difference]: Without dead ends: 1430 [2021-10-08 16:36:01,802 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 285.6ms TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:36:01,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2021-10-08 16:36:01,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 624. [2021-10-08 16:36:01,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 623 states have (on average 4.60513643659711) internal successors, (2869), 623 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:01,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 2869 transitions. [2021-10-08 16:36:01,859 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 2869 transitions. Word has length 22 [2021-10-08 16:36:01,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:01,859 INFO L470 AbstractCegarLoop]: Abstraction has 624 states and 2869 transitions. [2021-10-08 16:36:01,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:01,860 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 2869 transitions. [2021-10-08 16:36:01,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:36:01,865 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:01,865 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:36:01,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:02,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:36:02,079 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:36:02,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:02,080 INFO L82 PathProgramCache]: Analyzing trace with hash 2120370192, now seen corresponding path program 3 times [2021-10-08 16:36:02,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:02,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734165201] [2021-10-08 16:36:02,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:36:02,081 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:02,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:02,082 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:36:02,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-08 16:36:02,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 16:36:02,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:36:02,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:36:02,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:02,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:02,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:02,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:02,750 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:02,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1734165201] [2021-10-08 16:36:02,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1734165201] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:02,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:02,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2021-10-08 16:36:02,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122141716] [2021-10-08 16:36:02,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 16:36:02,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:02,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 16:36:02,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-08 16:36:02,752 INFO L87 Difference]: Start difference. First operand 624 states and 2869 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:04,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:04,035 INFO L93 Difference]: Finished difference Result 2956 states and 12925 transitions. [2021-10-08 16:36:04,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 16:36:04,036 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 16:36:04,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:04,070 INFO L225 Difference]: With dead ends: 2956 [2021-10-08 16:36:04,071 INFO L226 Difference]: Without dead ends: 2956 [2021-10-08 16:36:04,071 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 723.8ms TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:36:04,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2021-10-08 16:36:04,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 934. [2021-10-08 16:36:04,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 933 states have (on average 5.144694533762058) internal successors, (4800), 933 states have internal predecessors, (4800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:04,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 4800 transitions. [2021-10-08 16:36:04,164 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 4800 transitions. Word has length 23 [2021-10-08 16:36:04,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:04,164 INFO L470 AbstractCegarLoop]: Abstraction has 934 states and 4800 transitions. [2021-10-08 16:36:04,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:04,165 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 4800 transitions. [2021-10-08 16:36:04,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:36:04,170 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:04,170 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] [2021-10-08 16:36:04,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:04,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:36:04,383 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:36:04,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:04,384 INFO L82 PathProgramCache]: Analyzing trace with hash 748745480, now seen corresponding path program 1 times [2021-10-08 16:36:04,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:04,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651482208] [2021-10-08 16:36:04,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:04,386 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:04,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:04,387 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:36:04,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-08 16:36:04,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:04,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:36:04,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:05,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:05,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:05,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:05,423 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:05,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651482208] [2021-10-08 16:36:05,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [651482208] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:05,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:05,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 16:36:05,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250033849] [2021-10-08 16:36:05,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:36:05,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:05,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:36:05,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:05,429 INFO L87 Difference]: Start difference. First operand 934 states and 4800 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:05,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:05,645 INFO L93 Difference]: Finished difference Result 1242 states and 5847 transitions. [2021-10-08 16:36:05,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:36:05,646 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 16:36:05,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:05,659 INFO L225 Difference]: With dead ends: 1242 [2021-10-08 16:36:05,660 INFO L226 Difference]: Without dead ends: 1192 [2021-10-08 16:36:05,660 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 99.5ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:05,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2021-10-08 16:36:05,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1040. [2021-10-08 16:36:05,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 1039 states have (on average 5.095283926852743) internal successors, (5294), 1039 states have internal predecessors, (5294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:05,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 5294 transitions. [2021-10-08 16:36:05,718 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 5294 transitions. Word has length 23 [2021-10-08 16:36:05,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:05,719 INFO L470 AbstractCegarLoop]: Abstraction has 1040 states and 5294 transitions. [2021-10-08 16:36:05,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:05,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 5294 transitions. [2021-10-08 16:36:05,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:36:05,725 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:05,725 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] [2021-10-08 16:36:05,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:05,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:36:05,943 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:36:05,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:05,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1120646782, now seen corresponding path program 1 times [2021-10-08 16:36:05,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:05,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115549996] [2021-10-08 16:36:05,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:05,945 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:05,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:05,946 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:36:05,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-08 16:36:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:06,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:36:06,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:06,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:06,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:06,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:06,896 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:06,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115549996] [2021-10-08 16:36:06,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115549996] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:06,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:06,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 16:36:06,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941625652] [2021-10-08 16:36:06,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:36:06,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:06,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:36:06,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:06,898 INFO L87 Difference]: Start difference. First operand 1040 states and 5294 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:07,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:07,115 INFO L93 Difference]: Finished difference Result 1284 states and 6238 transitions. [2021-10-08 16:36:07,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:36:07,116 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 16:36:07,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:07,130 INFO L225 Difference]: With dead ends: 1284 [2021-10-08 16:36:07,130 INFO L226 Difference]: Without dead ends: 1266 [2021-10-08 16:36:07,131 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 105.3ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:07,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2021-10-08 16:36:07,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1160. [2021-10-08 16:36:07,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1160 states, 1159 states have (on average 5.070750647109577) internal successors, (5877), 1159 states have internal predecessors, (5877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:07,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 5877 transitions. [2021-10-08 16:36:07,199 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 5877 transitions. Word has length 23 [2021-10-08 16:36:07,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:07,202 INFO L470 AbstractCegarLoop]: Abstraction has 1160 states and 5877 transitions. [2021-10-08 16:36:07,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:07,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 5877 transitions. [2021-10-08 16:36:07,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:36:07,208 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:07,208 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] [2021-10-08 16:36:07,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:07,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:36:07,422 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:36:07,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:07,423 INFO L82 PathProgramCache]: Analyzing trace with hash -751343254, now seen corresponding path program 2 times [2021-10-08 16:36:07,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:07,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974198403] [2021-10-08 16:36:07,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:36:07,425 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:07,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:07,426 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:36:07,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-08 16:36:07,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:36:07,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:36:07,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:36:07,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:08,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:08,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:08,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:08,479 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:08,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974198403] [2021-10-08 16:36:08,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974198403] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:08,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:08,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 16:36:08,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685148830] [2021-10-08 16:36:08,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:36:08,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:08,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:36:08,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:08,481 INFO L87 Difference]: Start difference. First operand 1160 states and 5877 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:09,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:09,640 INFO L93 Difference]: Finished difference Result 1400 states and 6781 transitions. [2021-10-08 16:36:09,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:36:09,640 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 16:36:09,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:09,657 INFO L225 Difference]: With dead ends: 1400 [2021-10-08 16:36:09,657 INFO L226 Difference]: Without dead ends: 1382 [2021-10-08 16:36:09,657 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 101.0ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:09,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2021-10-08 16:36:09,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1266. [2021-10-08 16:36:09,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1266 states, 1265 states have (on average 5.030830039525692) internal successors, (6364), 1265 states have internal predecessors, (6364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:09,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 6364 transitions. [2021-10-08 16:36:09,715 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 6364 transitions. Word has length 23 [2021-10-08 16:36:09,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:09,715 INFO L470 AbstractCegarLoop]: Abstraction has 1266 states and 6364 transitions. [2021-10-08 16:36:09,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:09,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 6364 transitions. [2021-10-08 16:36:09,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:36:09,721 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:09,722 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] [2021-10-08 16:36:09,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:09,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:36:09,935 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:36:09,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:09,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1122770222, now seen corresponding path program 2 times [2021-10-08 16:36:09,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:09,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1084314430] [2021-10-08 16:36:09,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:36:09,936 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:09,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:09,937 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:36:09,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-08 16:36:10,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:36:10,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:36:10,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:36:10,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:10,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:10,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:11,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:11,105 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:11,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1084314430] [2021-10-08 16:36:11,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1084314430] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:11,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:11,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 16:36:11,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144206541] [2021-10-08 16:36:11,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:36:11,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:11,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:36:11,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:11,107 INFO L87 Difference]: Start difference. First operand 1266 states and 6364 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:11,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:11,368 INFO L93 Difference]: Finished difference Result 1536 states and 7259 transitions. [2021-10-08 16:36:11,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:36:11,369 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 16:36:11,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:11,391 INFO L225 Difference]: With dead ends: 1536 [2021-10-08 16:36:11,391 INFO L226 Difference]: Without dead ends: 1486 [2021-10-08 16:36:11,392 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 110.9ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:11,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2021-10-08 16:36:11,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1326. [2021-10-08 16:36:11,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1326 states, 1325 states have (on average 5.009811320754717) internal successors, (6638), 1325 states have internal predecessors, (6638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:11,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 6638 transitions. [2021-10-08 16:36:11,453 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 6638 transitions. Word has length 23 [2021-10-08 16:36:11,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:11,453 INFO L470 AbstractCegarLoop]: Abstraction has 1326 states and 6638 transitions. [2021-10-08 16:36:11,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:11,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 6638 transitions. [2021-10-08 16:36:11,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:36:11,460 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:11,461 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:36:11,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:11,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:36:11,675 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:36:11,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:11,676 INFO L82 PathProgramCache]: Analyzing trace with hash -549539138, now seen corresponding path program 4 times [2021-10-08 16:36:11,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:11,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913321327] [2021-10-08 16:36:11,677 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:36:11,677 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:11,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:11,679 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) [2021-10-08 16:36:11,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-08 16:36:11,956 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:36:11,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:36:11,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 16:36:11,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:12,284 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:12,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:12,642 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:12,643 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:12,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [913321327] [2021-10-08 16:36:12,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [913321327] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:12,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:12,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-08 16:36:12,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693902237] [2021-10-08 16:36:12,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:36:12,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:12,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:36:12,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:36:12,645 INFO L87 Difference]: Start difference. First operand 1326 states and 6638 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:14,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:14,352 INFO L93 Difference]: Finished difference Result 3442 states and 15435 transitions. [2021-10-08 16:36:14,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 16:36:14,352 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 16:36:14,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:14,368 INFO L225 Difference]: With dead ends: 3442 [2021-10-08 16:36:14,368 INFO L226 Difference]: Without dead ends: 3442 [2021-10-08 16:36:14,369 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1154.6ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-10-08 16:36:14,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3442 states. [2021-10-08 16:36:14,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3442 to 1598. [2021-10-08 16:36:14,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1597 states have (on average 5.032561051972448) internal successors, (8037), 1597 states have internal predecessors, (8037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:14,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 8037 transitions. [2021-10-08 16:36:14,485 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 8037 transitions. Word has length 24 [2021-10-08 16:36:14,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:14,485 INFO L470 AbstractCegarLoop]: Abstraction has 1598 states and 8037 transitions. [2021-10-08 16:36:14,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:14,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 8037 transitions. [2021-10-08 16:36:14,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:36:14,493 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:14,493 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:36:14,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:14,706 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 [2021-10-08 16:36:14,706 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:36:14,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:14,708 INFO L82 PathProgramCache]: Analyzing trace with hash -239038936, now seen corresponding path program 3 times [2021-10-08 16:36:14,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:14,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464895421] [2021-10-08 16:36:14,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:36:14,709 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:14,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:14,711 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) [2021-10-08 16:36:14,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-08 16:36:15,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 16:36:15,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:36:15,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:36:15,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:15,228 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:15,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:15,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:15,460 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:15,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464895421] [2021-10-08 16:36:15,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1464895421] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:15,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:15,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-08 16:36:15,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298955351] [2021-10-08 16:36:15,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:36:15,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:15,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:36:15,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:36:15,462 INFO L87 Difference]: Start difference. First operand 1598 states and 8037 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:20,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:20,951 INFO L93 Difference]: Finished difference Result 2950 states and 13383 transitions. [2021-10-08 16:36:20,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 16:36:20,952 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 16:36:20,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:20,969 INFO L225 Difference]: With dead ends: 2950 [2021-10-08 16:36:20,969 INFO L226 Difference]: Without dead ends: 2900 [2021-10-08 16:36:20,970 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 535.1ms TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:36:20,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2021-10-08 16:36:21,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 1864. [2021-10-08 16:36:21,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1864 states, 1863 states have (on average 4.979066022544283) internal successors, (9276), 1863 states have internal predecessors, (9276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:21,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 9276 transitions. [2021-10-08 16:36:21,070 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 9276 transitions. Word has length 24 [2021-10-08 16:36:21,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:21,071 INFO L470 AbstractCegarLoop]: Abstraction has 1864 states and 9276 transitions. [2021-10-08 16:36:21,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:21,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 9276 transitions. [2021-10-08 16:36:21,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:36:21,080 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:21,080 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:36:21,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-10-08 16:36:21,294 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 [2021-10-08 16:36:21,294 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:36:21,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:21,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1263501276, now seen corresponding path program 3 times [2021-10-08 16:36:21,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:21,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203072898] [2021-10-08 16:36:21,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:36:21,296 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:21,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:21,297 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) [2021-10-08 16:36:21,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-08 16:36:21,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 16:36:21,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:36:21,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:36:21,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:21,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:21,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:22,044 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:22,044 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:22,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203072898] [2021-10-08 16:36:22,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203072898] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:22,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:22,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 16:36:22,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874431163] [2021-10-08 16:36:22,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:36:22,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:22,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:36:22,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:36:22,047 INFO L87 Difference]: Start difference. First operand 1864 states and 9276 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:26,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:26,232 INFO L93 Difference]: Finished difference Result 2970 states and 13713 transitions. [2021-10-08 16:36:26,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 16:36:26,232 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 16:36:26,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:26,251 INFO L225 Difference]: With dead ends: 2970 [2021-10-08 16:36:26,251 INFO L226 Difference]: Without dead ends: 2970 [2021-10-08 16:36:26,252 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 293.2ms TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:36:26,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2021-10-08 16:36:26,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 2116. [2021-10-08 16:36:26,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2116 states, 2115 states have (on average 5.026950354609929) internal successors, (10632), 2115 states have internal predecessors, (10632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:26,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2116 states to 2116 states and 10632 transitions. [2021-10-08 16:36:26,366 INFO L78 Accepts]: Start accepts. Automaton has 2116 states and 10632 transitions. Word has length 24 [2021-10-08 16:36:26,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:26,366 INFO L470 AbstractCegarLoop]: Abstraction has 2116 states and 10632 transitions. [2021-10-08 16:36:26,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:26,366 INFO L276 IsEmpty]: Start isEmpty. Operand 2116 states and 10632 transitions. [2021-10-08 16:36:26,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:36:26,376 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:26,376 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:36:26,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:26,590 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 [2021-10-08 16:36:26,591 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:36:26,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:26,592 INFO L82 PathProgramCache]: Analyzing trace with hash 639179062, now seen corresponding path program 4 times [2021-10-08 16:36:26,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:26,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100816978] [2021-10-08 16:36:26,592 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:36:26,593 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:26,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:26,594 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) [2021-10-08 16:36:26,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-08 16:36:26,917 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:36:26,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:36:26,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:36:26,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:27,151 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:27,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:27,456 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:27,456 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:27,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100816978] [2021-10-08 16:36:27,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100816978] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:27,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:27,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-08 16:36:27,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583635165] [2021-10-08 16:36:27,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:36:27,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:27,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:36:27,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:36:27,458 INFO L87 Difference]: Start difference. First operand 2116 states and 10632 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:40,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:40,736 INFO L93 Difference]: Finished difference Result 3108 states and 14364 transitions. [2021-10-08 16:36:40,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 16:36:40,737 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 16:36:40,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:40,755 INFO L225 Difference]: With dead ends: 3108 [2021-10-08 16:36:40,755 INFO L226 Difference]: Without dead ends: 3096 [2021-10-08 16:36:40,756 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 545.7ms TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:36:40,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3096 states. [2021-10-08 16:36:40,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3096 to 2286. [2021-10-08 16:36:40,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2286 states, 2285 states have (on average 4.9304157549234136) internal successors, (11266), 2285 states have internal predecessors, (11266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:40,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2286 states to 2286 states and 11266 transitions. [2021-10-08 16:36:40,898 INFO L78 Accepts]: Start accepts. Automaton has 2286 states and 11266 transitions. Word has length 24 [2021-10-08 16:36:40,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:40,898 INFO L470 AbstractCegarLoop]: Abstraction has 2286 states and 11266 transitions. [2021-10-08 16:36:40,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:40,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2286 states and 11266 transitions. [2021-10-08 16:36:40,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:36:40,909 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:40,909 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:36:40,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:41,123 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 [2021-10-08 16:36:41,124 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:36:41,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:41,125 INFO L82 PathProgramCache]: Analyzing trace with hash 68278102, now seen corresponding path program 5 times [2021-10-08 16:36:41,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:41,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [564335359] [2021-10-08 16:36:41,126 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:36:41,126 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:41,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:41,127 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) [2021-10-08 16:36:41,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-08 16:36:41,430 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 16:36:41,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:36:41,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:36:41,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:41,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:41,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:41,863 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:41,863 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:41,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [564335359] [2021-10-08 16:36:41,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [564335359] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:41,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:41,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 16:36:41,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396444265] [2021-10-08 16:36:41,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:36:41,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:41,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:36:41,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:36:41,865 INFO L87 Difference]: Start difference. First operand 2286 states and 11266 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 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) [2021-10-08 16:36:43,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:43,200 INFO L93 Difference]: Finished difference Result 3642 states and 16408 transitions. [2021-10-08 16:36:43,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 16:36:43,201 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 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 24 [2021-10-08 16:36:43,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:43,220 INFO L225 Difference]: With dead ends: 3642 [2021-10-08 16:36:43,220 INFO L226 Difference]: Without dead ends: 3642 [2021-10-08 16:36:43,220 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 377.2ms TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:36:43,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3642 states. [2021-10-08 16:36:43,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3642 to 2318. [2021-10-08 16:36:43,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2318 states, 2317 states have (on average 4.898144151920587) internal successors, (11349), 2317 states have internal predecessors, (11349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:43,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 11349 transitions. [2021-10-08 16:36:43,365 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 11349 transitions. Word has length 24 [2021-10-08 16:36:43,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:43,365 INFO L470 AbstractCegarLoop]: Abstraction has 2318 states and 11349 transitions. [2021-10-08 16:36:43,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 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) [2021-10-08 16:36:43,366 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 11349 transitions. [2021-10-08 16:36:43,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:36:43,375 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:43,375 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:36:43,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-10-08 16:36:43,589 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 [2021-10-08 16:36:43,589 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:36:43,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:43,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1793201282, now seen corresponding path program 6 times [2021-10-08 16:36:43,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:43,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2018718862] [2021-10-08 16:36:43,591 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:36:43,591 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:43,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:43,592 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) [2021-10-08 16:36:43,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-08 16:36:43,968 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 16:36:43,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:36:43,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:36:43,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:44,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:44,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:44,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:44,338 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:44,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2018718862] [2021-10-08 16:36:44,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2018718862] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:44,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:44,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 16:36:44,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918669437] [2021-10-08 16:36:44,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:36:44,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:44,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:36:44,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:36:44,340 INFO L87 Difference]: Start difference. First operand 2318 states and 11349 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 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) [2021-10-08 16:37:13,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:13,728 INFO L93 Difference]: Finished difference Result 3736 states and 16349 transitions. [2021-10-08 16:37:13,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 16:37:13,728 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 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 24 [2021-10-08 16:37:13,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:13,746 INFO L225 Difference]: With dead ends: 3736 [2021-10-08 16:37:13,746 INFO L226 Difference]: Without dead ends: 3716 [2021-10-08 16:37:13,747 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 2310.6ms TimeCoverageRelationStatistics Valid=60, Invalid=149, Unknown=1, NotChecked=0, Total=210 [2021-10-08 16:37:13,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3716 states. [2021-10-08 16:37:13,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3716 to 2462. [2021-10-08 16:37:13,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2462 states, 2461 states have (on average 4.857781389678992) internal successors, (11955), 2461 states have internal predecessors, (11955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:13,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2462 states to 2462 states and 11955 transitions. [2021-10-08 16:37:13,915 INFO L78 Accepts]: Start accepts. Automaton has 2462 states and 11955 transitions. Word has length 24 [2021-10-08 16:37:13,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:13,915 INFO L470 AbstractCegarLoop]: Abstraction has 2462 states and 11955 transitions. [2021-10-08 16:37:13,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 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) [2021-10-08 16:37:13,916 INFO L276 IsEmpty]: Start isEmpty. Operand 2462 states and 11955 transitions. [2021-10-08 16:37:13,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:37:13,926 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:13,926 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:37:13,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:14,140 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 [2021-10-08 16:37:14,140 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:37:14,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:14,141 INFO L82 PathProgramCache]: Analyzing trace with hash 345092150, now seen corresponding path program 7 times [2021-10-08 16:37:14,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:14,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1467743445] [2021-10-08 16:37:14,142 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:37:14,142 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:14,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:14,145 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) [2021-10-08 16:37:14,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-08 16:37:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:37:14,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:37:14,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:14,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:14,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:15,023 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:15,023 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:15,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1467743445] [2021-10-08 16:37:15,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1467743445] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:37:15,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:37:15,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-08 16:37:15,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527915005] [2021-10-08 16:37:15,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:37:15,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:15,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:37:15,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:37:15,026 INFO L87 Difference]: Start difference. First operand 2462 states and 11955 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:18,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:18,336 INFO L93 Difference]: Finished difference Result 4560 states and 20631 transitions. [2021-10-08 16:37:18,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 16:37:18,337 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 16:37:18,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:18,380 INFO L225 Difference]: With dead ends: 4560 [2021-10-08 16:37:18,380 INFO L226 Difference]: Without dead ends: 4560 [2021-10-08 16:37:18,381 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 407.5ms TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:37:18,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4560 states. [2021-10-08 16:37:18,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4560 to 2794. [2021-10-08 16:37:18,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2794 states, 2793 states have (on average 5.033655567490154) internal successors, (14059), 2793 states have internal predecessors, (14059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:18,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2794 states to 2794 states and 14059 transitions. [2021-10-08 16:37:18,602 INFO L78 Accepts]: Start accepts. Automaton has 2794 states and 14059 transitions. Word has length 24 [2021-10-08 16:37:18,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:18,602 INFO L470 AbstractCegarLoop]: Abstraction has 2794 states and 14059 transitions. [2021-10-08 16:37:18,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:18,603 INFO L276 IsEmpty]: Start isEmpty. Operand 2794 states and 14059 transitions. [2021-10-08 16:37:18,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:37:18,630 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:18,631 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:37:18,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:18,831 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 [2021-10-08 16:37:18,832 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:37:18,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:18,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1394740060, now seen corresponding path program 8 times [2021-10-08 16:37:18,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:18,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104272063] [2021-10-08 16:37:18,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:37:18,833 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:18,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:18,835 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) [2021-10-08 16:37:18,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-08 16:37:19,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:37:19,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:37:19,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:37:19,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:19,734 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:19,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:19,989 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:19,989 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:19,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104272063] [2021-10-08 16:37:19,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104272063] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:37:19,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:37:19,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 16:37:19,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408240835] [2021-10-08 16:37:19,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:37:19,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:19,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:37:19,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:37:19,992 INFO L87 Difference]: Start difference. First operand 2794 states and 14059 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:20,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:20,650 INFO L93 Difference]: Finished difference Result 4470 states and 20842 transitions. [2021-10-08 16:37:20,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:37:20,651 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 16:37:20,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:20,692 INFO L225 Difference]: With dead ends: 4470 [2021-10-08 16:37:20,692 INFO L226 Difference]: Without dead ends: 4470 [2021-10-08 16:37:20,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 293.3ms TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:37:20,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4470 states. [2021-10-08 16:37:20,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4470 to 2872. [2021-10-08 16:37:20,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2872 states, 2871 states have (on average 5.075931731104145) internal successors, (14573), 2871 states have internal predecessors, (14573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:20,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2872 states to 2872 states and 14573 transitions. [2021-10-08 16:37:20,873 INFO L78 Accepts]: Start accepts. Automaton has 2872 states and 14573 transitions. Word has length 24 [2021-10-08 16:37:20,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:20,874 INFO L470 AbstractCegarLoop]: Abstraction has 2872 states and 14573 transitions. [2021-10-08 16:37:20,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:20,874 INFO L276 IsEmpty]: Start isEmpty. Operand 2872 states and 14573 transitions. [2021-10-08 16:37:20,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:37:20,889 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:20,889 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:37:20,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:21,103 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 [2021-10-08 16:37:21,103 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:37:21,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:21,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1557937206, now seen corresponding path program 9 times [2021-10-08 16:37:21,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:21,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817446267] [2021-10-08 16:37:21,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:37:21,105 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:21,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:21,106 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) [2021-10-08 16:37:21,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-08 16:37:21,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 16:37:21,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:37:21,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:37:21,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:21,860 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:21,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:22,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:22,165 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:22,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817446267] [2021-10-08 16:37:22,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [817446267] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:37:22,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:37:22,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-08 16:37:22,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666986979] [2021-10-08 16:37:22,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:37:22,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:22,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:37:22,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:37:22,167 INFO L87 Difference]: Start difference. First operand 2872 states and 14573 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:25,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:25,190 INFO L93 Difference]: Finished difference Result 4346 states and 19999 transitions. [2021-10-08 16:37:25,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 16:37:25,191 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 16:37:25,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:25,210 INFO L225 Difference]: With dead ends: 4346 [2021-10-08 16:37:25,210 INFO L226 Difference]: Without dead ends: 4314 [2021-10-08 16:37:25,211 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 459.9ms TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:37:25,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4314 states. [2021-10-08 16:37:25,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4314 to 2988. [2021-10-08 16:37:25,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2988 states, 2987 states have (on average 5.010713090056913) internal successors, (14967), 2987 states have internal predecessors, (14967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:25,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2988 states to 2988 states and 14967 transitions. [2021-10-08 16:37:25,347 INFO L78 Accepts]: Start accepts. Automaton has 2988 states and 14967 transitions. Word has length 24 [2021-10-08 16:37:25,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:25,348 INFO L470 AbstractCegarLoop]: Abstraction has 2988 states and 14967 transitions. [2021-10-08 16:37:25,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:25,348 INFO L276 IsEmpty]: Start isEmpty. Operand 2988 states and 14967 transitions. [2021-10-08 16:37:25,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:37:25,360 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:25,360 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:37:25,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:25,574 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 [2021-10-08 16:37:25,575 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:37:25,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:25,576 INFO L82 PathProgramCache]: Analyzing trace with hash 580356226, now seen corresponding path program 10 times [2021-10-08 16:37:25,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:25,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48110483] [2021-10-08 16:37:25,577 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:37:25,577 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:25,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:25,579 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) [2021-10-08 16:37:25,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-08 16:37:25,923 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:37:25,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:37:25,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:37:25,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:26,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:26,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:26,498 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:26,498 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:26,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48110483] [2021-10-08 16:37:26,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [48110483] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:37:26,499 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:37:26,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-08 16:37:26,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107859260] [2021-10-08 16:37:26,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:37:26,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:26,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:37:26,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:37:26,502 INFO L87 Difference]: Start difference. First operand 2988 states and 14967 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:27,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:27,541 INFO L93 Difference]: Finished difference Result 4906 states and 22867 transitions. [2021-10-08 16:37:27,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 16:37:27,542 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 16:37:27,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:27,558 INFO L225 Difference]: With dead ends: 4906 [2021-10-08 16:37:27,558 INFO L226 Difference]: Without dead ends: 4906 [2021-10-08 16:37:27,558 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 499.6ms TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:37:27,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4906 states. [2021-10-08 16:37:27,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4906 to 3100. [2021-10-08 16:37:27,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3100 states, 3099 states have (on average 5.034849951597289) internal successors, (15603), 3099 states have internal predecessors, (15603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:27,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 15603 transitions. [2021-10-08 16:37:27,760 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 15603 transitions. Word has length 24 [2021-10-08 16:37:27,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:27,761 INFO L470 AbstractCegarLoop]: Abstraction has 3100 states and 15603 transitions. [2021-10-08 16:37:27,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:27,761 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 15603 transitions. [2021-10-08 16:37:27,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:37:27,774 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:27,774 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:37:27,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:27,980 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 [2021-10-08 16:37:27,981 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:37:27,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:27,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1918644982, now seen corresponding path program 11 times [2021-10-08 16:37:27,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:27,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610270200] [2021-10-08 16:37:27,983 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:37:27,983 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:27,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:27,984 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) [2021-10-08 16:37:27,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-08 16:37:28,341 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 16:37:28,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:37:28,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 16:37:28,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:28,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:28,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:29,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:29,335 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:29,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610270200] [2021-10-08 16:37:29,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610270200] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:37:29,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:37:29,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-08 16:37:29,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208768460] [2021-10-08 16:37:29,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:37:29,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:29,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:37:29,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:37:29,337 INFO L87 Difference]: Start difference. First operand 3100 states and 15603 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:31,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:31,481 INFO L93 Difference]: Finished difference Result 6388 states and 30366 transitions. [2021-10-08 16:37:31,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 16:37:31,482 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 16:37:31,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:31,530 INFO L225 Difference]: With dead ends: 6388 [2021-10-08 16:37:31,530 INFO L226 Difference]: Without dead ends: 6388 [2021-10-08 16:37:31,530 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1402.6ms TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2021-10-08 16:37:31,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6388 states. [2021-10-08 16:37:31,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6388 to 3994. [2021-10-08 16:37:31,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3994 states, 3993 states have (on average 5.194089656899575) internal successors, (20740), 3993 states have internal predecessors, (20740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:31,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3994 states to 3994 states and 20740 transitions. [2021-10-08 16:37:31,840 INFO L78 Accepts]: Start accepts. Automaton has 3994 states and 20740 transitions. Word has length 24 [2021-10-08 16:37:31,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:31,840 INFO L470 AbstractCegarLoop]: Abstraction has 3994 states and 20740 transitions. [2021-10-08 16:37:31,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:31,841 INFO L276 IsEmpty]: Start isEmpty. Operand 3994 states and 20740 transitions. [2021-10-08 16:37:31,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:37:31,860 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:31,860 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:37:31,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:32,088 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 [2021-10-08 16:37:32,088 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:37:32,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:32,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1873516446, now seen corresponding path program 4 times [2021-10-08 16:37:32,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:32,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [886942738] [2021-10-08 16:37:32,090 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:37:32,090 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:32,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:32,096 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) [2021-10-08 16:37:32,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-08 16:37:32,507 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:37:32,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:37:32,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:37:32,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:32,856 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:32,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:33,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:33,224 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:33,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [886942738] [2021-10-08 16:37:33,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [886942738] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:37:33,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:37:33,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 11 [2021-10-08 16:37:33,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321545741] [2021-10-08 16:37:33,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:37:33,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:33,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:37:33,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:37:33,226 INFO L87 Difference]: Start difference. First operand 3994 states and 20740 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 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) [2021-10-08 16:37:40,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:40,967 INFO L93 Difference]: Finished difference Result 8542 states and 39546 transitions. [2021-10-08 16:37:40,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 16:37:40,968 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 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 24 [2021-10-08 16:37:40,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:41,012 INFO L225 Difference]: With dead ends: 8542 [2021-10-08 16:37:41,013 INFO L226 Difference]: Without dead ends: 8472 [2021-10-08 16:37:41,013 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 2185.4ms TimeCoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:37:41,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8472 states. [2021-10-08 16:37:41,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8472 to 4320. [2021-10-08 16:37:41,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4320 states, 4319 states have (on average 5.215096087057189) internal successors, (22524), 4319 states have internal predecessors, (22524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:41,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4320 states to 4320 states and 22524 transitions. [2021-10-08 16:37:41,273 INFO L78 Accepts]: Start accepts. Automaton has 4320 states and 22524 transitions. Word has length 24 [2021-10-08 16:37:41,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:41,274 INFO L470 AbstractCegarLoop]: Abstraction has 4320 states and 22524 transitions. [2021-10-08 16:37:41,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 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) [2021-10-08 16:37:41,274 INFO L276 IsEmpty]: Start isEmpty. Operand 4320 states and 22524 transitions. [2021-10-08 16:37:41,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:37:41,290 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:41,290 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:37:41,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:41,491 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 [2021-10-08 16:37:41,491 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:37:41,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:41,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1894523816, now seen corresponding path program 5 times [2021-10-08 16:37:41,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:41,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997452598] [2021-10-08 16:37:41,494 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:37:41,495 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:41,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:41,495 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:37:41,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-08 16:37:41,922 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:37:41,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:37:41,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:37:41,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:42,274 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:42,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:42,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:42,722 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:42,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997452598] [2021-10-08 16:37:42,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997452598] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:37:42,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:37:42,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-08 16:37:42,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773252681] [2021-10-08 16:37:42,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:37:42,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:42,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:37:42,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:37:42,728 INFO L87 Difference]: Start difference. First operand 4320 states and 22524 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 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) [2021-10-08 16:37:43,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:43,932 INFO L93 Difference]: Finished difference Result 11156 states and 53949 transitions. [2021-10-08 16:37:43,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 16:37:43,933 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 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 24 [2021-10-08 16:37:43,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:43,972 INFO L225 Difference]: With dead ends: 11156 [2021-10-08 16:37:43,973 INFO L226 Difference]: Without dead ends: 11156 [2021-10-08 16:37:43,973 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 651.0ms TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2021-10-08 16:37:43,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11156 states. [2021-10-08 16:37:44,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11156 to 5070. [2021-10-08 16:37:44,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5070 states, 5069 states have (on average 5.454724797790491) internal successors, (27650), 5069 states have internal predecessors, (27650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:44,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5070 states to 5070 states and 27650 transitions. [2021-10-08 16:37:44,251 INFO L78 Accepts]: Start accepts. Automaton has 5070 states and 27650 transitions. Word has length 24 [2021-10-08 16:37:44,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:44,251 INFO L470 AbstractCegarLoop]: Abstraction has 5070 states and 27650 transitions. [2021-10-08 16:37:44,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 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) [2021-10-08 16:37:44,252 INFO L276 IsEmpty]: Start isEmpty. Operand 5070 states and 27650 transitions. [2021-10-08 16:37:44,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:37:44,317 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:44,317 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:37:44,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:44,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:37:44,525 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:37:44,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:44,526 INFO L82 PathProgramCache]: Analyzing trace with hash 761005472, now seen corresponding path program 6 times [2021-10-08 16:37:44,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:44,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123753750] [2021-10-08 16:37:44,527 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:37:44,527 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:44,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:44,528 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:37:44,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-08 16:37:44,981 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 16:37:44,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:37:44,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 16:37:44,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:45,262 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:45,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:46,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:46,052 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:46,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123753750] [2021-10-08 16:37:46,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123753750] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:37:46,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:37:46,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 12 [2021-10-08 16:37:46,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36476991] [2021-10-08 16:37:46,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 16:37:46,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:46,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 16:37:46,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:37:46,054 INFO L87 Difference]: Start difference. First operand 5070 states and 27650 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:49,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:49,801 INFO L93 Difference]: Finished difference Result 10376 states and 49793 transitions. [2021-10-08 16:37:49,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 16:37:49,802 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 16:37:49,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:49,844 INFO L225 Difference]: With dead ends: 10376 [2021-10-08 16:37:49,844 INFO L226 Difference]: Without dead ends: 10302 [2021-10-08 16:37:49,845 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 2233.1ms TimeCoverageRelationStatistics Valid=244, Invalid=626, Unknown=0, NotChecked=0, Total=870 [2021-10-08 16:37:49,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10302 states. [2021-10-08 16:37:50,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10302 to 5242. [2021-10-08 16:37:50,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5242 states, 5241 states have (on average 5.428353367677924) internal successors, (28450), 5241 states have internal predecessors, (28450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:50,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5242 states to 5242 states and 28450 transitions. [2021-10-08 16:37:50,081 INFO L78 Accepts]: Start accepts. Automaton has 5242 states and 28450 transitions. Word has length 24 [2021-10-08 16:37:50,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:50,081 INFO L470 AbstractCegarLoop]: Abstraction has 5242 states and 28450 transitions. [2021-10-08 16:37:50,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:50,081 INFO L276 IsEmpty]: Start isEmpty. Operand 5242 states and 28450 transitions. [2021-10-08 16:37:50,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:37:50,095 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:50,095 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:37:50,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2021-10-08 16:37:50,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:37:50,296 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:37:50,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:50,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1589322852, now seen corresponding path program 7 times [2021-10-08 16:37:50,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:50,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [671422965] [2021-10-08 16:37:50,297 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:37:50,298 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:50,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:50,299 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:37:50,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-08 16:37:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:37:50,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:37:50,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:51,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:51,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:51,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:51,629 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:51,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [671422965] [2021-10-08 16:37:51,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [671422965] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:37:51,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:37:51,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:37:51,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3873867] [2021-10-08 16:37:51,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:37:51,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:51,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:37:51,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:37:51,631 INFO L87 Difference]: Start difference. First operand 5242 states and 28450 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 13 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) [2021-10-08 16:37:54,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:54,229 INFO L93 Difference]: Finished difference Result 9754 states and 47534 transitions. [2021-10-08 16:37:54,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 16:37:54,230 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 13 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 24 [2021-10-08 16:37:54,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:54,266 INFO L225 Difference]: With dead ends: 9754 [2021-10-08 16:37:54,266 INFO L226 Difference]: Without dead ends: 9754 [2021-10-08 16:37:54,267 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1288.0ms TimeCoverageRelationStatistics Valid=159, Invalid=543, Unknown=0, NotChecked=0, Total=702 [2021-10-08 16:37:54,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9754 states. [2021-10-08 16:37:54,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9754 to 5560. [2021-10-08 16:37:54,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5560 states, 5559 states have (on average 5.445763626551538) internal successors, (30273), 5559 states have internal predecessors, (30273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:54,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5560 states to 5560 states and 30273 transitions. [2021-10-08 16:37:54,553 INFO L78 Accepts]: Start accepts. Automaton has 5560 states and 30273 transitions. Word has length 24 [2021-10-08 16:37:54,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:54,553 INFO L470 AbstractCegarLoop]: Abstraction has 5560 states and 30273 transitions. [2021-10-08 16:37:54,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 13 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) [2021-10-08 16:37:54,554 INFO L276 IsEmpty]: Start isEmpty. Operand 5560 states and 30273 transitions. [2021-10-08 16:37:54,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:37:54,575 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:54,575 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] [2021-10-08 16:37:54,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2021-10-08 16:37:54,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:37:54,776 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:37:54,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:54,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1997592754, now seen corresponding path program 1 times [2021-10-08 16:37:54,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:54,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1400093437] [2021-10-08 16:37:54,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:37:54,779 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:54,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:54,780 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:37:54,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-08 16:37:55,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:37:55,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:37:55,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:55,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:37:55,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:55,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:37:55,669 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:55,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1400093437] [2021-10-08 16:37:55,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1400093437] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 16:37:55,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:37:55,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-10-08 16:37:55,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287547926] [2021-10-08 16:37:55,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:37:55,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:55,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:37:55,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:37:55,671 INFO L87 Difference]: Start difference. First operand 5560 states and 30273 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:55,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:55,859 INFO L93 Difference]: Finished difference Result 5924 states and 31502 transitions. [2021-10-08 16:37:55,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:37:55,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 16:37:55,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:55,886 INFO L225 Difference]: With dead ends: 5924 [2021-10-08 16:37:55,886 INFO L226 Difference]: Without dead ends: 5882 [2021-10-08 16:37:55,887 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 119.5ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:37:55,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5882 states. [2021-10-08 16:37:56,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5882 to 5488. [2021-10-08 16:37:56,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5488 states, 5487 states have (on average 5.440495717149626) internal successors, (29852), 5487 states have internal predecessors, (29852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:56,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5488 states to 5488 states and 29852 transitions. [2021-10-08 16:37:56,160 INFO L78 Accepts]: Start accepts. Automaton has 5488 states and 29852 transitions. Word has length 24 [2021-10-08 16:37:56,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:56,160 INFO L470 AbstractCegarLoop]: Abstraction has 5488 states and 29852 transitions. [2021-10-08 16:37:56,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:56,161 INFO L276 IsEmpty]: Start isEmpty. Operand 5488 states and 29852 transitions. [2021-10-08 16:37:56,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:37:56,182 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:56,182 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:37:56,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:56,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:37:56,384 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:37:56,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:56,384 INFO L82 PathProgramCache]: Analyzing trace with hash -290203120, now seen corresponding path program 8 times [2021-10-08 16:37:56,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:56,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133817965] [2021-10-08 16:37:56,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:37:56,386 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:56,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:56,388 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:37:56,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-08 16:37:56,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:37:56,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:37:56,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:37:56,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:57,555 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:57,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:57,911 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:57,912 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:57,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133817965] [2021-10-08 16:37:57,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [133817965] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:37:57,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:37:57,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:37:57,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621865941] [2021-10-08 16:37:57,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:37:57,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:57,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:37:57,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:37:57,914 INFO L87 Difference]: Start difference. First operand 5488 states and 29852 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:59,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:59,120 INFO L93 Difference]: Finished difference Result 6118 states and 32021 transitions. [2021-10-08 16:37:59,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:37:59,120 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:37:59,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:59,142 INFO L225 Difference]: With dead ends: 6118 [2021-10-08 16:37:59,142 INFO L226 Difference]: Without dead ends: 6068 [2021-10-08 16:37:59,143 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 321.8ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:37:59,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6068 states. [2021-10-08 16:37:59,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6068 to 5594. [2021-10-08 16:37:59,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5594 states, 5593 states have (on average 5.420883246915787) internal successors, (30319), 5593 states have internal predecessors, (30319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:59,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5594 states to 5594 states and 30319 transitions. [2021-10-08 16:37:59,474 INFO L78 Accepts]: Start accepts. Automaton has 5594 states and 30319 transitions. Word has length 25 [2021-10-08 16:37:59,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:59,474 INFO L470 AbstractCegarLoop]: Abstraction has 5594 states and 30319 transitions. [2021-10-08 16:37:59,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:59,475 INFO L276 IsEmpty]: Start isEmpty. Operand 5594 states and 30319 transitions. [2021-10-08 16:37:59,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:37:59,497 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:59,497 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:37:59,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:59,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:37:59,712 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:37:59,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:59,713 INFO L82 PathProgramCache]: Analyzing trace with hash 316926214, now seen corresponding path program 9 times [2021-10-08 16:37:59,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:59,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713302676] [2021-10-08 16:37:59,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:37:59,714 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:59,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:59,716 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:37:59,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-08 16:38:00,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 16:38:00,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:38:00,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 16:38:00,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:38:00,505 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:38:00,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:38:01,336 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:01,337 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:38:01,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713302676] [2021-10-08 16:38:01,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713302676] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:38:01,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:38:01,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8] total 12 [2021-10-08 16:38:01,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507244337] [2021-10-08 16:38:01,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 16:38:01,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:38:01,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 16:38:01,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:38:01,339 INFO L87 Difference]: Start difference. First operand 5594 states and 30319 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:08,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:38:08,442 INFO L93 Difference]: Finished difference Result 14102 states and 67768 transitions. [2021-10-08 16:38:08,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 16:38:08,444 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:38:08,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:38:08,497 INFO L225 Difference]: With dead ends: 14102 [2021-10-08 16:38:08,498 INFO L226 Difference]: Without dead ends: 14054 [2021-10-08 16:38:08,498 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 4784.4ms TimeCoverageRelationStatistics Valid=340, Invalid=992, Unknown=0, NotChecked=0, Total=1332 [2021-10-08 16:38:08,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14054 states. [2021-10-08 16:38:08,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14054 to 6206. [2021-10-08 16:38:08,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6206 states, 6205 states have (on average 5.53505237711523) internal successors, (34345), 6205 states have internal predecessors, (34345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:08,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6206 states to 6206 states and 34345 transitions. [2021-10-08 16:38:08,884 INFO L78 Accepts]: Start accepts. Automaton has 6206 states and 34345 transitions. Word has length 25 [2021-10-08 16:38:08,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:38:08,884 INFO L470 AbstractCegarLoop]: Abstraction has 6206 states and 34345 transitions. [2021-10-08 16:38:08,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:08,884 INFO L276 IsEmpty]: Start isEmpty. Operand 6206 states and 34345 transitions. [2021-10-08 16:38:08,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:38:08,904 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:38:08,904 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] [2021-10-08 16:38:08,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-08 16:38:09,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:38:09,105 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:38:09,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:38:09,106 INFO L82 PathProgramCache]: Analyzing trace with hash 76002934, now seen corresponding path program 1 times [2021-10-08 16:38:09,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:38:09,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1482139900] [2021-10-08 16:38:09,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:38:09,107 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:38:09,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:38:09,108 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:38:09,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-08 16:38:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:38:09,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:38:09,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:38:10,331 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:10,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:38:10,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:10,825 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:38:10,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1482139900] [2021-10-08 16:38:10,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1482139900] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:38:10,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:38:10,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:38:10,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351226086] [2021-10-08 16:38:10,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:38:10,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:38:10,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:38:10,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:38:10,828 INFO L87 Difference]: Start difference. First operand 6206 states and 34345 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:14,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:38:14,319 INFO L93 Difference]: Finished difference Result 7592 states and 40165 transitions. [2021-10-08 16:38:14,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:38:14,319 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:38:14,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:38:14,344 INFO L225 Difference]: With dead ends: 7592 [2021-10-08 16:38:14,345 INFO L226 Difference]: Without dead ends: 7498 [2021-10-08 16:38:14,345 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 422.9ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:38:14,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7498 states. [2021-10-08 16:38:14,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7498 to 6586. [2021-10-08 16:38:14,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6586 states, 6585 states have (on average 5.559453302961276) internal successors, (36609), 6585 states have internal predecessors, (36609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:14,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6586 states to 6586 states and 36609 transitions. [2021-10-08 16:38:14,565 INFO L78 Accepts]: Start accepts. Automaton has 6586 states and 36609 transitions. Word has length 25 [2021-10-08 16:38:14,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:38:14,566 INFO L470 AbstractCegarLoop]: Abstraction has 6586 states and 36609 transitions. [2021-10-08 16:38:14,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:14,566 INFO L276 IsEmpty]: Start isEmpty. Operand 6586 states and 36609 transitions. [2021-10-08 16:38:14,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:38:14,587 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:38:14,587 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] [2021-10-08 16:38:14,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2021-10-08 16:38:14,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:38:14,788 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:38:14,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:38:14,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1795987102, now seen corresponding path program 2 times [2021-10-08 16:38:14,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:38:14,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [426472877] [2021-10-08 16:38:14,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:38:14,790 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:38:14,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:38:14,791 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:38:14,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-08 16:38:15,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:38:15,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:38:15,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:38:15,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:38:16,032 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:16,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:38:16,428 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:16,428 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:38:16,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [426472877] [2021-10-08 16:38:16,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [426472877] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:38:16,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:38:16,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:38:16,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632561727] [2021-10-08 16:38:16,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:38:16,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:38:16,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:38:16,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:38:16,430 INFO L87 Difference]: Start difference. First operand 6586 states and 36609 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:17,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:38:17,809 INFO L93 Difference]: Finished difference Result 7838 states and 41834 transitions. [2021-10-08 16:38:17,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:38:17,809 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:38:17,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:38:17,840 INFO L225 Difference]: With dead ends: 7838 [2021-10-08 16:38:17,840 INFO L226 Difference]: Without dead ends: 7738 [2021-10-08 16:38:17,840 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 310.7ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:38:17,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7738 states. [2021-10-08 16:38:18,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7738 to 6850. [2021-10-08 16:38:18,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6850 states, 6849 states have (on average 5.607241933128924) internal successors, (38404), 6849 states have internal predecessors, (38404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:18,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6850 states to 6850 states and 38404 transitions. [2021-10-08 16:38:18,131 INFO L78 Accepts]: Start accepts. Automaton has 6850 states and 38404 transitions. Word has length 25 [2021-10-08 16:38:18,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:38:18,131 INFO L470 AbstractCegarLoop]: Abstraction has 6850 states and 38404 transitions. [2021-10-08 16:38:18,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:18,131 INFO L276 IsEmpty]: Start isEmpty. Operand 6850 states and 38404 transitions. [2021-10-08 16:38:18,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:38:18,151 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:38:18,151 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:38:18,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-08 16:38:18,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:38:18,352 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:38:18,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:38:18,353 INFO L82 PathProgramCache]: Analyzing trace with hash 2127553226, now seen corresponding path program 10 times [2021-10-08 16:38:18,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:38:18,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234704637] [2021-10-08 16:38:18,354 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:38:18,354 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:38:18,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:38:18,355 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:38:18,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-08 16:38:18,860 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:38:18,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:38:18,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:38:18,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:38:21,444 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:21,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:38:21,752 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:21,752 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:38:21,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234704637] [2021-10-08 16:38:21,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234704637] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:38:21,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:38:21,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:38:21,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864382090] [2021-10-08 16:38:21,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:38:21,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:38:21,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:38:21,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2021-10-08 16:38:21,753 INFO L87 Difference]: Start difference. First operand 6850 states and 38404 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:35,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:38:35,834 INFO L93 Difference]: Finished difference Result 7714 states and 41428 transitions. [2021-10-08 16:38:35,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:38:35,835 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:38:35,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:38:35,867 INFO L225 Difference]: With dead ends: 7714 [2021-10-08 16:38:35,868 INFO L226 Difference]: Without dead ends: 7664 [2021-10-08 16:38:35,868 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 6351.5ms TimeCoverageRelationStatistics Valid=42, Invalid=112, Unknown=2, NotChecked=0, Total=156 [2021-10-08 16:38:35,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7664 states. [2021-10-08 16:38:36,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7664 to 6964. [2021-10-08 16:38:36,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6964 states, 6963 states have (on average 5.602757432141319) internal successors, (39012), 6963 states have internal predecessors, (39012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:36,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6964 states to 6964 states and 39012 transitions. [2021-10-08 16:38:36,175 INFO L78 Accepts]: Start accepts. Automaton has 6964 states and 39012 transitions. Word has length 25 [2021-10-08 16:38:36,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:38:36,175 INFO L470 AbstractCegarLoop]: Abstraction has 6964 states and 39012 transitions. [2021-10-08 16:38:36,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:36,175 INFO L276 IsEmpty]: Start isEmpty. Operand 6964 states and 39012 transitions. [2021-10-08 16:38:36,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:38:36,201 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:38:36,201 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] [2021-10-08 16:38:36,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-08 16:38:36,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:38:36,402 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:38:36,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:38:36,403 INFO L82 PathProgramCache]: Analyzing trace with hash 740784310, now seen corresponding path program 3 times [2021-10-08 16:38:36,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:38:36,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903216177] [2021-10-08 16:38:36,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:38:36,404 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:38:36,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:38:36,405 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:38:36,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-08 16:38:37,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 16:38:37,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:38:37,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:38:37,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:38:37,869 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:37,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:38:38,240 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:38,240 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:38:38,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903216177] [2021-10-08 16:38:38,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903216177] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:38:38,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:38:38,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:38:38,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71241457] [2021-10-08 16:38:38,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:38:38,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:38:38,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:38:38,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:38:38,242 INFO L87 Difference]: Start difference. First operand 6964 states and 39012 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:39,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:38:39,115 INFO L93 Difference]: Finished difference Result 8770 states and 46785 transitions. [2021-10-08 16:38:39,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 16:38:39,116 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:38:39,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:38:39,150 INFO L225 Difference]: With dead ends: 8770 [2021-10-08 16:38:39,150 INFO L226 Difference]: Without dead ends: 8664 [2021-10-08 16:38:39,151 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 296.4ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:38:39,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8664 states. [2021-10-08 16:38:39,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8664 to 7248. [2021-10-08 16:38:39,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7248 states, 7247 states have (on average 5.642334759210708) internal successors, (40890), 7247 states have internal predecessors, (40890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:39,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7248 states to 7248 states and 40890 transitions. [2021-10-08 16:38:39,446 INFO L78 Accepts]: Start accepts. Automaton has 7248 states and 40890 transitions. Word has length 25 [2021-10-08 16:38:39,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:38:39,446 INFO L470 AbstractCegarLoop]: Abstraction has 7248 states and 40890 transitions. [2021-10-08 16:38:39,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:39,446 INFO L276 IsEmpty]: Start isEmpty. Operand 7248 states and 40890 transitions. [2021-10-08 16:38:39,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:38:39,531 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:38:39,532 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] [2021-10-08 16:38:39,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-08 16:38:39,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:38:39,746 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:38:39,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:38:39,747 INFO L82 PathProgramCache]: Analyzing trace with hash -905427146, now seen corresponding path program 4 times [2021-10-08 16:38:39,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:38:39,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690693241] [2021-10-08 16:38:39,748 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:38:39,749 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:38:39,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:38:39,750 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:38:39,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-08 16:38:40,309 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:38:40,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:38:40,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:38:40,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:38:41,711 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:41,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:38:42,094 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:42,095 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:38:42,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690693241] [2021-10-08 16:38:42,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690693241] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:38:42,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:38:42,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:38:42,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890580990] [2021-10-08 16:38:42,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:38:42,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:38:42,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:38:42,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:38:42,097 INFO L87 Difference]: Start difference. First operand 7248 states and 40890 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:42,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:38:42,748 INFO L93 Difference]: Finished difference Result 8306 states and 45250 transitions. [2021-10-08 16:38:42,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 16:38:42,749 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:38:42,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:38:42,787 INFO L225 Difference]: With dead ends: 8306 [2021-10-08 16:38:42,787 INFO L226 Difference]: Without dead ends: 8214 [2021-10-08 16:38:42,788 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1123.6ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:38:42,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8214 states. [2021-10-08 16:38:42,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8214 to 7678. [2021-10-08 16:38:43,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7678 states, 7677 states have (on average 5.630845382310799) internal successors, (43228), 7677 states have internal predecessors, (43228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:43,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7678 states to 7678 states and 43228 transitions. [2021-10-08 16:38:43,057 INFO L78 Accepts]: Start accepts. Automaton has 7678 states and 43228 transitions. Word has length 25 [2021-10-08 16:38:43,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:38:43,057 INFO L470 AbstractCegarLoop]: Abstraction has 7678 states and 43228 transitions. [2021-10-08 16:38:43,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:43,057 INFO L276 IsEmpty]: Start isEmpty. Operand 7678 states and 43228 transitions. [2021-10-08 16:38:43,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:38:43,079 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:38:43,079 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] [2021-10-08 16:38:43,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-08 16:38:43,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:38:43,294 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:38:43,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:38:43,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1878071076, now seen corresponding path program 5 times [2021-10-08 16:38:43,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:38:43,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369515059] [2021-10-08 16:38:43,296 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:38:43,296 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:38:43,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:38:43,297 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:38:43,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-08 16:38:44,114 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 16:38:44,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:38:44,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:38:44,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:38:44,784 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:44,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:38:45,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:45,278 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:38:45,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369515059] [2021-10-08 16:38:45,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369515059] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:38:45,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:38:45,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:38:45,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355529416] [2021-10-08 16:38:45,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:38:45,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:38:45,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:38:45,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:38:45,282 INFO L87 Difference]: Start difference. First operand 7678 states and 43228 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:45,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:38:45,970 INFO L93 Difference]: Finished difference Result 8624 states and 47083 transitions. [2021-10-08 16:38:45,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 16:38:45,970 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:38:45,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:38:46,013 INFO L225 Difference]: With dead ends: 8624 [2021-10-08 16:38:46,013 INFO L226 Difference]: Without dead ends: 8538 [2021-10-08 16:38:46,013 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 393.1ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:38:46,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8538 states. [2021-10-08 16:38:46,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8538 to 7952. [2021-10-08 16:38:46,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7952 states, 7951 states have (on average 5.631367123632248) internal successors, (44775), 7951 states have internal predecessors, (44775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:46,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7952 states to 7952 states and 44775 transitions. [2021-10-08 16:38:46,381 INFO L78 Accepts]: Start accepts. Automaton has 7952 states and 44775 transitions. Word has length 25 [2021-10-08 16:38:46,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:38:46,382 INFO L470 AbstractCegarLoop]: Abstraction has 7952 states and 44775 transitions. [2021-10-08 16:38:46,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:46,382 INFO L276 IsEmpty]: Start isEmpty. Operand 7952 states and 44775 transitions. [2021-10-08 16:38:46,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:38:46,407 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:38:46,415 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] [2021-10-08 16:38:46,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2021-10-08 16:38:46,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:38:46,616 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:38:46,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:38:46,618 INFO L82 PathProgramCache]: Analyzing trace with hash 992272796, now seen corresponding path program 6 times [2021-10-08 16:38:46,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:38:46,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1151007145] [2021-10-08 16:38:46,619 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:38:46,619 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:38:46,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:38:46,620 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:38:46,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-08 16:38:47,368 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 16:38:47,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:38:47,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:38:47,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:38:48,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:48,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:38:48,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:48,438 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:38:48,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1151007145] [2021-10-08 16:38:48,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1151007145] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:38:48,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:38:48,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:38:48,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977220916] [2021-10-08 16:38:48,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:38:48,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:38:48,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:38:48,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:38:48,439 INFO L87 Difference]: Start difference. First operand 7952 states and 44775 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:49,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:38:49,220 INFO L93 Difference]: Finished difference Result 9782 states and 52403 transitions. [2021-10-08 16:38:49,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 16:38:49,221 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:38:49,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:38:49,256 INFO L225 Difference]: With dead ends: 9782 [2021-10-08 16:38:49,256 INFO L226 Difference]: Without dead ends: 9654 [2021-10-08 16:38:49,269 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 283.2ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:38:49,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9654 states. [2021-10-08 16:38:49,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9654 to 8130. [2021-10-08 16:38:49,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8130 states, 8129 states have (on average 5.66883995571411) internal successors, (46082), 8129 states have internal predecessors, (46082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:49,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8130 states to 8130 states and 46082 transitions. [2021-10-08 16:38:49,675 INFO L78 Accepts]: Start accepts. Automaton has 8130 states and 46082 transitions. Word has length 25 [2021-10-08 16:38:49,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:38:49,675 INFO L470 AbstractCegarLoop]: Abstraction has 8130 states and 46082 transitions. [2021-10-08 16:38:49,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:49,676 INFO L276 IsEmpty]: Start isEmpty. Operand 8130 states and 46082 transitions. [2021-10-08 16:38:49,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:38:49,699 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:38:49,699 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:38:49,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Ended with exit code 0 [2021-10-08 16:38:49,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:38:49,901 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:38:49,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:38:49,902 INFO L82 PathProgramCache]: Analyzing trace with hash -254966704, now seen corresponding path program 12 times [2021-10-08 16:38:49,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:38:49,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1142052340] [2021-10-08 16:38:49,903 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:38:49,903 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:38:49,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:38:49,905 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:38:49,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-08 16:38:50,703 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 16:38:50,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:38:50,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:38:50,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:38:51,236 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:51,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:38:51,602 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:51,602 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:38:51,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1142052340] [2021-10-08 16:38:51,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1142052340] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:38:51,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:38:51,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:38:51,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646950470] [2021-10-08 16:38:51,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:38:51,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:38:51,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:38:51,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:38:51,605 INFO L87 Difference]: Start difference. First operand 8130 states and 46082 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:59,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:38:59,032 INFO L93 Difference]: Finished difference Result 8770 states and 48341 transitions. [2021-10-08 16:38:59,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:38:59,032 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:38:59,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:38:59,072 INFO L225 Difference]: With dead ends: 8770 [2021-10-08 16:38:59,072 INFO L226 Difference]: Without dead ends: 8740 [2021-10-08 16:38:59,072 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 343.8ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:38:59,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8740 states. [2021-10-08 16:38:59,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8740 to 8308. [2021-10-08 16:38:59,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8308 states, 8307 states have (on average 5.641386782231852) internal successors, (46863), 8307 states have internal predecessors, (46863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:59,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8308 states to 8308 states and 46863 transitions. [2021-10-08 16:38:59,396 INFO L78 Accepts]: Start accepts. Automaton has 8308 states and 46863 transitions. Word has length 25 [2021-10-08 16:38:59,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:38:59,396 INFO L470 AbstractCegarLoop]: Abstraction has 8308 states and 46863 transitions. [2021-10-08 16:38:59,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:59,396 INFO L276 IsEmpty]: Start isEmpty. Operand 8308 states and 46863 transitions. [2021-10-08 16:38:59,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:38:59,417 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:38:59,417 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:38:59,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-10-08 16:38:59,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:38:59,618 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:38:59,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:38:59,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1024499216, now seen corresponding path program 13 times [2021-10-08 16:38:59,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:38:59,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1321689031] [2021-10-08 16:38:59,621 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:38:59,621 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:38:59,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:38:59,622 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:38:59,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-08 16:39:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:39:00,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:39:00,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:39:03,115 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:03,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:39:03,464 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:03,464 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:39:03,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1321689031] [2021-10-08 16:39:03,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1321689031] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:39:03,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:39:03,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:39:03,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067599858] [2021-10-08 16:39:03,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:39:03,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:39:03,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:39:03,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2021-10-08 16:39:03,466 INFO L87 Difference]: Start difference. First operand 8308 states and 46863 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:39:08,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:39:08,892 INFO L93 Difference]: Finished difference Result 9012 states and 49323 transitions. [2021-10-08 16:39:08,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:39:08,892 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:39:08,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:39:08,935 INFO L225 Difference]: With dead ends: 9012 [2021-10-08 16:39:08,935 INFO L226 Difference]: Without dead ends: 8982 [2021-10-08 16:39:08,936 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 6591.4ms TimeCoverageRelationStatistics Valid=42, Invalid=112, Unknown=2, NotChecked=0, Total=156 [2021-10-08 16:39:08,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8982 states. [2021-10-08 16:39:09,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8982 to 8572. [2021-10-08 16:39:09,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8572 states, 8571 states have (on average 5.6148640765371605) internal successors, (48125), 8571 states have internal predecessors, (48125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:39:09,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8572 states to 8572 states and 48125 transitions. [2021-10-08 16:39:09,266 INFO L78 Accepts]: Start accepts. Automaton has 8572 states and 48125 transitions. Word has length 25 [2021-10-08 16:39:09,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:39:09,266 INFO L470 AbstractCegarLoop]: Abstraction has 8572 states and 48125 transitions. [2021-10-08 16:39:09,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:39:09,267 INFO L276 IsEmpty]: Start isEmpty. Operand 8572 states and 48125 transitions. [2021-10-08 16:39:09,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:39:09,368 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:39:09,368 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:39:09,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-08 16:39:09,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:39:09,569 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:39:09,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:39:09,570 INFO L82 PathProgramCache]: Analyzing trace with hash -881082500, now seen corresponding path program 14 times [2021-10-08 16:39:09,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:39:09,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2120080429] [2021-10-08 16:39:09,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:39:09,572 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:39:09,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:39:09,573 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:39:09,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-08 16:39:10,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:39:10,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:39:10,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 16:39:10,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:39:10,743 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:10,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:39:11,858 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:11,859 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:39:11,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2120080429] [2021-10-08 16:39:11,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2120080429] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:39:11,859 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:39:11,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:39:11,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940967574] [2021-10-08 16:39:11,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:39:11,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:39:11,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:39:11,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:39:11,861 INFO L87 Difference]: Start difference. First operand 8572 states and 48125 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:39:14,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:39:14,698 INFO L93 Difference]: Finished difference Result 15130 states and 79141 transitions. [2021-10-08 16:39:14,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 16:39:14,699 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:39:14,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:39:14,763 INFO L225 Difference]: With dead ends: 15130 [2021-10-08 16:39:14,763 INFO L226 Difference]: Without dead ends: 15130 [2021-10-08 16:39:14,763 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1871.4ms TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2021-10-08 16:39:14,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15130 states. [2021-10-08 16:39:15,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15130 to 9658. [2021-10-08 16:39:15,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9658 states, 9657 states have (on average 5.747229988609299) internal successors, (55501), 9657 states have internal predecessors, (55501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:39:15,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9658 states to 9658 states and 55501 transitions. [2021-10-08 16:39:15,288 INFO L78 Accepts]: Start accepts. Automaton has 9658 states and 55501 transitions. Word has length 25 [2021-10-08 16:39:15,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:39:15,289 INFO L470 AbstractCegarLoop]: Abstraction has 9658 states and 55501 transitions. [2021-10-08 16:39:15,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:39:15,289 INFO L276 IsEmpty]: Start isEmpty. Operand 9658 states and 55501 transitions. [2021-10-08 16:39:15,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:39:15,317 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:39:15,318 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:39:15,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Ended with exit code 0 [2021-10-08 16:39:15,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:39:15,519 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:39:15,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:39:15,520 INFO L82 PathProgramCache]: Analyzing trace with hash 546136088, now seen corresponding path program 15 times [2021-10-08 16:39:15,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:39:15,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [428292247] [2021-10-08 16:39:15,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:39:15,521 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:39:15,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:39:15,523 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:39:15,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-08 16:39:16,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 16:39:16,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:39:16,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:39:16,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:39:18,947 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:18,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:39:19,322 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:19,323 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:39:19,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [428292247] [2021-10-08 16:39:19,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [428292247] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:39:19,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:39:19,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:39:19,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938716114] [2021-10-08 16:39:19,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:39:19,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:39:19,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:39:19,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2021-10-08 16:39:19,325 INFO L87 Difference]: Start difference. First operand 9658 states and 55501 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:39:31,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:39:31,358 INFO L93 Difference]: Finished difference Result 10108 states and 56852 transitions. [2021-10-08 16:39:31,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:39:31,358 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:39:31,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:39:31,403 INFO L225 Difference]: With dead ends: 10108 [2021-10-08 16:39:31,404 INFO L226 Difference]: Without dead ends: 10078 [2021-10-08 16:39:31,404 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 6374.1ms TimeCoverageRelationStatistics Valid=42, Invalid=112, Unknown=2, NotChecked=0, Total=156 [2021-10-08 16:39:31,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10078 states. [2021-10-08 16:39:31,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10078 to 9644. [2021-10-08 16:39:31,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9644 states, 9643 states have (on average 5.747277818106398) internal successors, (55421), 9643 states have internal predecessors, (55421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:39:31,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9644 states to 9644 states and 55421 transitions. [2021-10-08 16:39:31,823 INFO L78 Accepts]: Start accepts. Automaton has 9644 states and 55421 transitions. Word has length 25 [2021-10-08 16:39:31,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:39:31,823 INFO L470 AbstractCegarLoop]: Abstraction has 9644 states and 55421 transitions. [2021-10-08 16:39:31,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:39:31,823 INFO L276 IsEmpty]: Start isEmpty. Operand 9644 states and 55421 transitions. [2021-10-08 16:39:31,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:39:31,847 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:39:31,847 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:39:31,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-08 16:39:32,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:39:32,049 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:39:32,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:39:32,050 INFO L82 PathProgramCache]: Analyzing trace with hash 2117136560, now seen corresponding path program 16 times [2021-10-08 16:39:32,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:39:32,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [192557537] [2021-10-08 16:39:32,050 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:39:32,051 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:39:32,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:39:32,052 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:39:32,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-08 16:39:32,768 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:39:32,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:39:32,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 16:39:32,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:39:33,403 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:33,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:39:34,710 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:34,710 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:39:34,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [192557537] [2021-10-08 16:39:34,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [192557537] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:39:34,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:39:34,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:39:34,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875521777] [2021-10-08 16:39:34,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:39:34,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:39:34,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:39:34,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:39:34,713 INFO L87 Difference]: Start difference. First operand 9644 states and 55421 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:39:39,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:39:39,130 INFO L93 Difference]: Finished difference Result 15626 states and 83727 transitions. [2021-10-08 16:39:39,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 16:39:39,131 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:39:39,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:39:39,217 INFO L225 Difference]: With dead ends: 15626 [2021-10-08 16:39:39,217 INFO L226 Difference]: Without dead ends: 15626 [2021-10-08 16:39:39,218 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2868.8ms TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:39:39,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15626 states. [2021-10-08 16:39:39,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15626 to 10062. [2021-10-08 16:39:39,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10062 states, 10061 states have (on average 5.754696352251267) internal successors, (57898), 10061 states have internal predecessors, (57898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:39:39,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10062 states to 10062 states and 57898 transitions. [2021-10-08 16:39:39,830 INFO L78 Accepts]: Start accepts. Automaton has 10062 states and 57898 transitions. Word has length 25 [2021-10-08 16:39:39,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:39:39,831 INFO L470 AbstractCegarLoop]: Abstraction has 10062 states and 57898 transitions. [2021-10-08 16:39:39,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:39:39,831 INFO L276 IsEmpty]: Start isEmpty. Operand 10062 states and 57898 transitions. [2021-10-08 16:39:39,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:39:39,866 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:39:39,866 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:39:39,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-10-08 16:39:40,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:39:40,081 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:39:40,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:39:40,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1734970544, now seen corresponding path program 17 times [2021-10-08 16:39:40,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:39:40,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147778585] [2021-10-08 16:39:40,084 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:39:40,084 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:39:40,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:39:40,086 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:39:40,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-08 16:39:41,012 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 16:39:41,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:39:41,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:39:41,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:39:41,506 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:41,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:39:41,843 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:41,843 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:39:41,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147778585] [2021-10-08 16:39:41,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [147778585] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:39:41,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:39:41,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:39:41,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951879212] [2021-10-08 16:39:41,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:39:41,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:39:41,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:39:41,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:39:41,846 INFO L87 Difference]: Start difference. First operand 10062 states and 57898 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:39:52,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:39:52,685 INFO L93 Difference]: Finished difference Result 10582 states and 59732 transitions. [2021-10-08 16:39:52,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 16:39:52,685 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:39:52,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:39:52,741 INFO L225 Difference]: With dead ends: 10582 [2021-10-08 16:39:52,741 INFO L226 Difference]: Without dead ends: 10552 [2021-10-08 16:39:52,741 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 251.0ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:39:52,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10552 states. [2021-10-08 16:39:53,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10552 to 10272. [2021-10-08 16:39:53,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10272 states, 10271 states have (on average 5.732840035050141) internal successors, (58882), 10271 states have internal predecessors, (58882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:39:53,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10272 states to 10272 states and 58882 transitions. [2021-10-08 16:39:53,195 INFO L78 Accepts]: Start accepts. Automaton has 10272 states and 58882 transitions. Word has length 25 [2021-10-08 16:39:53,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:39:53,195 INFO L470 AbstractCegarLoop]: Abstraction has 10272 states and 58882 transitions. [2021-10-08 16:39:53,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:39:53,195 INFO L276 IsEmpty]: Start isEmpty. Operand 10272 states and 58882 transitions. [2021-10-08 16:39:53,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:39:53,226 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:39:53,226 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:39:53,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-10-08 16:39:53,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:39:53,427 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:39:53,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:39:53,428 INFO L82 PathProgramCache]: Analyzing trace with hash 654415036, now seen corresponding path program 18 times [2021-10-08 16:39:53,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:39:53,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2083753033] [2021-10-08 16:39:53,429 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:39:53,430 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:39:53,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:39:53,431 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:39:53,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-08 16:39:54,434 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 16:39:54,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:39:54,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 16:39:54,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:39:54,924 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:54,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:39:56,109 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:56,110 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:39:56,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2083753033] [2021-10-08 16:39:56,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2083753033] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:39:56,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:39:56,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:39:56,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161656935] [2021-10-08 16:39:56,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:39:56,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:39:56,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:39:56,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:39:56,111 INFO L87 Difference]: Start difference. First operand 10272 states and 58882 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:02,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:40:02,495 INFO L93 Difference]: Finished difference Result 16050 states and 87184 transitions. [2021-10-08 16:40:02,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 16:40:02,496 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:40:02,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:40:02,579 INFO L225 Difference]: With dead ends: 16050 [2021-10-08 16:40:02,580 INFO L226 Difference]: Without dead ends: 16050 [2021-10-08 16:40:02,580 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 3222.6ms TimeCoverageRelationStatistics Valid=238, Invalid=518, Unknown=0, NotChecked=0, Total=756 [2021-10-08 16:40:02,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16050 states. [2021-10-08 16:40:03,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16050 to 10960. [2021-10-08 16:40:03,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10960 states, 10959 states have (on average 5.744045989597591) internal successors, (62949), 10959 states have internal predecessors, (62949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:03,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10960 states to 10960 states and 62949 transitions. [2021-10-08 16:40:03,171 INFO L78 Accepts]: Start accepts. Automaton has 10960 states and 62949 transitions. Word has length 25 [2021-10-08 16:40:03,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:40:03,172 INFO L470 AbstractCegarLoop]: Abstraction has 10960 states and 62949 transitions. [2021-10-08 16:40:03,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:03,172 INFO L276 IsEmpty]: Start isEmpty. Operand 10960 states and 62949 transitions. [2021-10-08 16:40:03,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:40:03,204 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:40:03,204 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:40:03,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Ended with exit code 0 [2021-10-08 16:40:03,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:40:03,412 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:40:03,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:40:03,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1992703792, now seen corresponding path program 19 times [2021-10-08 16:40:03,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:40:03,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [382741685] [2021-10-08 16:40:03,413 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:40:03,414 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:40:03,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:40:03,415 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:40:03,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-08 16:40:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:40:04,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 16:40:04,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:40:04,721 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:40:04,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:40:05,864 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:40:05,865 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:40:05,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [382741685] [2021-10-08 16:40:05,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [382741685] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:40:05,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:40:05,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:40:05,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688031147] [2021-10-08 16:40:05,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:40:05,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:40:05,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:40:05,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:40:05,867 INFO L87 Difference]: Start difference. First operand 10960 states and 62949 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:12,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:40:12,371 INFO L93 Difference]: Finished difference Result 17582 states and 95504 transitions. [2021-10-08 16:40:12,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 16:40:12,372 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:40:12,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:40:12,456 INFO L225 Difference]: With dead ends: 17582 [2021-10-08 16:40:12,456 INFO L226 Difference]: Without dead ends: 17582 [2021-10-08 16:40:12,457 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 4259.0ms TimeCoverageRelationStatistics Valid=318, Invalid=738, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 16:40:12,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17582 states. [2021-10-08 16:40:12,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17582 to 12078. [2021-10-08 16:40:13,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12078 states, 12077 states have (on average 5.743810548977395) internal successors, (69368), 12077 states have internal predecessors, (69368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:13,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12078 states to 12078 states and 69368 transitions. [2021-10-08 16:40:13,077 INFO L78 Accepts]: Start accepts. Automaton has 12078 states and 69368 transitions. Word has length 25 [2021-10-08 16:40:13,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:40:13,077 INFO L470 AbstractCegarLoop]: Abstraction has 12078 states and 69368 transitions. [2021-10-08 16:40:13,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:13,078 INFO L276 IsEmpty]: Start isEmpty. Operand 12078 states and 69368 transitions. [2021-10-08 16:40:13,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:40:13,115 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:40:13,116 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:40:13,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-10-08 16:40:13,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:40:13,317 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:40:13,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:40:13,317 INFO L82 PathProgramCache]: Analyzing trace with hash 586237074, now seen corresponding path program 11 times [2021-10-08 16:40:13,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:40:13,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [750562493] [2021-10-08 16:40:13,318 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:40:13,319 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:40:13,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:40:13,320 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:40:13,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-08 16:40:14,115 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 16:40:14,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:40:14,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 16:40:14,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:40:14,360 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:40:14,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:40:15,098 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:40:15,098 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:40:15,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [750562493] [2021-10-08 16:40:15,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [750562493] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:40:15,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:40:15,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-10-08 16:40:15,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740212492] [2021-10-08 16:40:15,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 16:40:15,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:40:15,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 16:40:15,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:40:15,100 INFO L87 Difference]: Start difference. First operand 12078 states and 69368 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:19,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:40:19,422 INFO L93 Difference]: Finished difference Result 35992 states and 187591 transitions. [2021-10-08 16:40:19,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 16:40:19,423 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:40:19,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:40:19,643 INFO L225 Difference]: With dead ends: 35992 [2021-10-08 16:40:19,643 INFO L226 Difference]: Without dead ends: 35992 [2021-10-08 16:40:19,644 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 2606.4ms TimeCoverageRelationStatistics Valid=211, Invalid=601, Unknown=0, NotChecked=0, Total=812 [2021-10-08 16:40:19,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35992 states. [2021-10-08 16:40:20,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35992 to 15136. [2021-10-08 16:40:20,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15136 states, 15135 states have (on average 5.971192599933928) internal successors, (90374), 15135 states have internal predecessors, (90374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:20,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15136 states to 15136 states and 90374 transitions. [2021-10-08 16:40:20,700 INFO L78 Accepts]: Start accepts. Automaton has 15136 states and 90374 transitions. Word has length 25 [2021-10-08 16:40:20,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:40:20,700 INFO L470 AbstractCegarLoop]: Abstraction has 15136 states and 90374 transitions. [2021-10-08 16:40:20,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:20,700 INFO L276 IsEmpty]: Start isEmpty. Operand 15136 states and 90374 transitions. [2021-10-08 16:40:20,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:40:20,747 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:40:20,748 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:40:20,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2021-10-08 16:40:20,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:40:20,949 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:40:20,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:40:20,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1407907632, now seen corresponding path program 12 times [2021-10-08 16:40:20,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:40:20,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1616300198] [2021-10-08 16:40:20,951 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:40:20,951 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:40:20,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:40:20,952 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:40:20,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-08 16:40:22,390 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 16:40:22,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:40:22,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:40:22,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:40:25,043 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:40:25,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:40:25,373 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:40:25,373 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:40:25,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1616300198] [2021-10-08 16:40:25,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1616300198] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:40:25,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:40:25,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:40:25,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248572102] [2021-10-08 16:40:25,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:40:25,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:40:25,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:40:25,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2021-10-08 16:40:25,376 INFO L87 Difference]: Start difference. First operand 15136 states and 90374 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:30,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:40:30,593 INFO L93 Difference]: Finished difference Result 15730 states and 92140 transitions. [2021-10-08 16:40:30,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:40:30,594 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:40:30,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:40:30,693 INFO L225 Difference]: With dead ends: 15730 [2021-10-08 16:40:30,693 INFO L226 Difference]: Without dead ends: 15680 [2021-10-08 16:40:30,693 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 6333.7ms TimeCoverageRelationStatistics Valid=42, Invalid=112, Unknown=2, NotChecked=0, Total=156 [2021-10-08 16:40:30,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15680 states. [2021-10-08 16:40:31,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15680 to 15168. [2021-10-08 16:40:31,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15168 states, 15167 states have (on average 5.968616074371992) internal successors, (90526), 15167 states have internal predecessors, (90526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:31,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15168 states to 15168 states and 90526 transitions. [2021-10-08 16:40:31,438 INFO L78 Accepts]: Start accepts. Automaton has 15168 states and 90526 transitions. Word has length 25 [2021-10-08 16:40:31,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:40:31,439 INFO L470 AbstractCegarLoop]: Abstraction has 15168 states and 90526 transitions. [2021-10-08 16:40:31,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:31,439 INFO L276 IsEmpty]: Start isEmpty. Operand 15168 states and 90526 transitions. [2021-10-08 16:40:31,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:40:31,621 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:40:31,622 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] [2021-10-08 16:40:31,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-10-08 16:40:31,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:40:31,830 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:40:31,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:40:31,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1140710336, now seen corresponding path program 7 times [2021-10-08 16:40:31,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:40:31,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [789612189] [2021-10-08 16:40:31,832 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:40:31,832 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:40:31,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:40:31,833 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:40:31,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-08 16:40:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:40:32,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:40:32,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:40:33,452 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:40:33,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:40:33,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:40:33,875 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:40:33,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [789612189] [2021-10-08 16:40:33,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [789612189] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:40:33,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:40:33,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:40:33,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555016886] [2021-10-08 16:40:33,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:40:33,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:40:33,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:40:33,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:40:33,877 INFO L87 Difference]: Start difference. First operand 15168 states and 90526 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:35,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:40:35,133 INFO L93 Difference]: Finished difference Result 16230 states and 94996 transitions. [2021-10-08 16:40:35,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:40:35,133 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:40:35,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:40:35,212 INFO L225 Difference]: With dead ends: 16230 [2021-10-08 16:40:35,212 INFO L226 Difference]: Without dead ends: 16172 [2021-10-08 16:40:35,212 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 301.6ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:40:35,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16172 states. [2021-10-08 16:40:35,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16172 to 15358. [2021-10-08 16:40:35,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15358 states, 15357 states have (on average 5.973171843459009) internal successors, (91730), 15357 states have internal predecessors, (91730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:35,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15358 states to 15358 states and 91730 transitions. [2021-10-08 16:40:35,979 INFO L78 Accepts]: Start accepts. Automaton has 15358 states and 91730 transitions. Word has length 25 [2021-10-08 16:40:35,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:40:35,979 INFO L470 AbstractCegarLoop]: Abstraction has 15358 states and 91730 transitions. [2021-10-08 16:40:35,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:35,979 INFO L276 IsEmpty]: Start isEmpty. Operand 15358 states and 91730 transitions. [2021-10-08 16:40:36,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:40:36,026 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:40:36,026 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] [2021-10-08 16:40:36,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-10-08 16:40:36,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:40:36,227 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:40:36,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:40:36,228 INFO L82 PathProgramCache]: Analyzing trace with hash -731279700, now seen corresponding path program 8 times [2021-10-08 16:40:36,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:40:36,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [435829992] [2021-10-08 16:40:36,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:40:36,229 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:40:36,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:40:36,230 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:40:36,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-08 16:40:37,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:40:37,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:40:37,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:40:37,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:40:38,197 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:40:38,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:40:38,616 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:40:38,617 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:40:38,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [435829992] [2021-10-08 16:40:38,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [435829992] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:40:38,617 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:40:38,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:40:38,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780992580] [2021-10-08 16:40:38,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:40:38,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:40:38,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:40:38,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:40:38,618 INFO L87 Difference]: Start difference. First operand 15358 states and 91730 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:41,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:40:41,709 INFO L93 Difference]: Finished difference Result 16316 states and 95691 transitions. [2021-10-08 16:40:41,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:40:41,710 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:40:41,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:40:41,798 INFO L225 Difference]: With dead ends: 16316 [2021-10-08 16:40:41,798 INFO L226 Difference]: Without dead ends: 16250 [2021-10-08 16:40:41,799 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 333.3ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:40:41,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16250 states. [2021-10-08 16:40:42,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16250 to 15468. [2021-10-08 16:40:42,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15468 states, 15467 states have (on average 5.9816383267602) internal successors, (92518), 15467 states have internal predecessors, (92518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:42,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15468 states to 15468 states and 92518 transitions. [2021-10-08 16:40:42,560 INFO L78 Accepts]: Start accepts. Automaton has 15468 states and 92518 transitions. Word has length 25 [2021-10-08 16:40:42,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:40:42,560 INFO L470 AbstractCegarLoop]: Abstraction has 15468 states and 92518 transitions. [2021-10-08 16:40:42,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:42,560 INFO L276 IsEmpty]: Start isEmpty. Operand 15468 states and 92518 transitions. [2021-10-08 16:40:42,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:40:42,615 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:40:42,615 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] [2021-10-08 16:40:42,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-10-08 16:40:42,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:40:42,816 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:40:42,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:40:42,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1591966122, now seen corresponding path program 9 times [2021-10-08 16:40:42,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:40:42,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177120325] [2021-10-08 16:40:42,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:40:42,818 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:40:42,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:40:42,820 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:40:42,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-08 16:40:43,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 16:40:43,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:40:43,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:40:43,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:40:44,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:40:44,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:40:44,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:40:44,932 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:40:44,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177120325] [2021-10-08 16:40:44,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1177120325] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:40:44,932 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:40:44,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:40:44,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917857137] [2021-10-08 16:40:44,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:40:44,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:40:44,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:40:44,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:40:44,933 INFO L87 Difference]: Start difference. First operand 15468 states and 92518 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:45,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:40:45,743 INFO L93 Difference]: Finished difference Result 16930 states and 98864 transitions. [2021-10-08 16:40:45,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 16:40:45,744 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:40:45,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:40:45,836 INFO L225 Difference]: With dead ends: 16930 [2021-10-08 16:40:45,836 INFO L226 Difference]: Without dead ends: 16872 [2021-10-08 16:40:45,836 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 260.9ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:40:45,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16872 states. [2021-10-08 16:40:46,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16872 to 15648. [2021-10-08 16:40:46,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15648 states, 15647 states have (on average 5.991308238000895) internal successors, (93746), 15647 states have internal predecessors, (93746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:46,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15648 states to 15648 states and 93746 transitions. [2021-10-08 16:40:46,580 INFO L78 Accepts]: Start accepts. Automaton has 15648 states and 93746 transitions. Word has length 25 [2021-10-08 16:40:46,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:40:46,581 INFO L470 AbstractCegarLoop]: Abstraction has 15648 states and 93746 transitions. [2021-10-08 16:40:46,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:46,581 INFO L276 IsEmpty]: Start isEmpty. Operand 15648 states and 93746 transitions. [2021-10-08 16:40:46,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:40:46,628 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:40:46,628 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] [2021-10-08 16:40:46,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2021-10-08 16:40:46,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:40:46,829 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:40:46,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:40:46,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1039646434, now seen corresponding path program 10 times [2021-10-08 16:40:46,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:40:46,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656567500] [2021-10-08 16:40:46,830 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:40:46,830 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:40:46,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:40:46,832 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:40:46,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-08 16:40:47,855 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:40:47,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:40:47,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:40:47,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:40:49,563 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:40:49,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:40:49,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:40:49,935 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:40:49,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [656567500] [2021-10-08 16:40:49,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [656567500] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:40:49,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:40:49,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:40:49,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337166549] [2021-10-08 16:40:49,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:40:49,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:40:49,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:40:49,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:40:49,937 INFO L87 Difference]: Start difference. First operand 15648 states and 93746 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:50,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:40:50,675 INFO L93 Difference]: Finished difference Result 16384 states and 96801 transitions. [2021-10-08 16:40:50,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 16:40:50,675 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:40:50,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:40:50,861 INFO L225 Difference]: With dead ends: 16384 [2021-10-08 16:40:50,861 INFO L226 Difference]: Without dead ends: 16338 [2021-10-08 16:40:50,862 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1262.7ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:40:50,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16338 states. [2021-10-08 16:40:51,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16338 to 15870. [2021-10-08 16:40:51,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15870 states, 15869 states have (on average 5.9869556997920474) internal successors, (95007), 15869 states have internal predecessors, (95007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:51,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15870 states to 15870 states and 95007 transitions. [2021-10-08 16:40:51,462 INFO L78 Accepts]: Start accepts. Automaton has 15870 states and 95007 transitions. Word has length 25 [2021-10-08 16:40:51,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:40:51,462 INFO L470 AbstractCegarLoop]: Abstraction has 15870 states and 95007 transitions. [2021-10-08 16:40:51,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:51,462 INFO L276 IsEmpty]: Start isEmpty. Operand 15870 states and 95007 transitions. [2021-10-08 16:40:51,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:40:51,519 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:40:51,519 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] [2021-10-08 16:40:51,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2021-10-08 16:40:51,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:40:51,720 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:40:51,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:40:51,721 INFO L82 PathProgramCache]: Analyzing trace with hash -938027678, now seen corresponding path program 11 times [2021-10-08 16:40:51,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:40:51,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351191213] [2021-10-08 16:40:51,722 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:40:51,722 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:40:51,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:40:51,724 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:40:51,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-08 16:40:52,994 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 16:40:52,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:40:53,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:40:53,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:40:53,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:40:53,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:40:54,017 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:40:54,017 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:40:54,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1351191213] [2021-10-08 16:40:54,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1351191213] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:40:54,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:40:54,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:40:54,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056424729] [2021-10-08 16:40:54,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:40:54,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:40:54,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:40:54,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:40:54,018 INFO L87 Difference]: Start difference. First operand 15870 states and 95007 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:54,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:40:54,827 INFO L93 Difference]: Finished difference Result 16546 states and 97743 transitions. [2021-10-08 16:40:54,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 16:40:54,828 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:40:54,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:40:54,904 INFO L225 Difference]: With dead ends: 16546 [2021-10-08 16:40:54,904 INFO L226 Difference]: Without dead ends: 16500 [2021-10-08 16:40:54,905 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 346.1ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:40:54,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16500 states. [2021-10-08 16:40:55,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16500 to 15972. [2021-10-08 16:40:55,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15972 states, 15971 states have (on average 5.987727756558763) internal successors, (95630), 15971 states have internal predecessors, (95630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:55,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15972 states to 15972 states and 95630 transitions. [2021-10-08 16:40:55,610 INFO L78 Accepts]: Start accepts. Automaton has 15972 states and 95630 transitions. Word has length 25 [2021-10-08 16:40:55,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:40:55,610 INFO L470 AbstractCegarLoop]: Abstraction has 15972 states and 95630 transitions. [2021-10-08 16:40:55,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:55,611 INFO L276 IsEmpty]: Start isEmpty. Operand 15972 states and 95630 transitions. [2021-10-08 16:40:55,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:40:55,660 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:40:55,660 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] [2021-10-08 16:40:55,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2021-10-08 16:40:55,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:40:55,861 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:40:55,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:40:55,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1782999130, now seen corresponding path program 12 times [2021-10-08 16:40:55,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:40:55,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [440807376] [2021-10-08 16:40:55,863 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:40:55,863 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:40:55,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:40:55,865 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:40:55,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-08 16:40:57,035 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 16:40:57,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:40:57,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:40:57,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:40:57,784 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:40:57,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:40:58,190 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:40:58,191 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:40:58,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [440807376] [2021-10-08 16:40:58,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [440807376] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:40:58,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:40:58,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:40:58,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187823724] [2021-10-08 16:40:58,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:40:58,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:40:58,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:40:58,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:40:58,193 INFO L87 Difference]: Start difference. First operand 15972 states and 95630 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:40:59,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:40:59,290 INFO L93 Difference]: Finished difference Result 17450 states and 101891 transitions. [2021-10-08 16:40:59,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 16:40:59,290 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:40:59,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:40:59,382 INFO L225 Difference]: With dead ends: 17450 [2021-10-08 16:40:59,383 INFO L226 Difference]: Without dead ends: 17384 [2021-10-08 16:40:59,383 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 312.6ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:40:59,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17384 states. [2021-10-08 16:40:59,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17384 to 16080. [2021-10-08 16:40:59,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16080 states, 16079 states have (on average 6.000062192922446) internal successors, (96475), 16079 states have internal predecessors, (96475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:00,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16080 states to 16080 states and 96475 transitions. [2021-10-08 16:41:00,055 INFO L78 Accepts]: Start accepts. Automaton has 16080 states and 96475 transitions. Word has length 25 [2021-10-08 16:41:00,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:41:00,055 INFO L470 AbstractCegarLoop]: Abstraction has 16080 states and 96475 transitions. [2021-10-08 16:41:00,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:00,055 INFO L276 IsEmpty]: Start isEmpty. Operand 16080 states and 96475 transitions. [2021-10-08 16:41:00,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:41:00,100 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:41:00,100 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:41:00,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2021-10-08 16:41:00,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:41:00,308 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:41:00,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:41:00,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1209910390, now seen corresponding path program 13 times [2021-10-08 16:41:00,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:41:00,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776958487] [2021-10-08 16:41:00,310 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:41:00,310 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:41:00,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:41:00,311 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:41:00,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-08 16:41:01,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:41:01,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:41:01,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:41:02,182 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:41:02,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:41:02,512 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:41:02,512 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:41:02,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776958487] [2021-10-08 16:41:02,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776958487] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:41:02,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:41:02,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:41:02,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383091204] [2021-10-08 16:41:02,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:41:02,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:41:02,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:41:02,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:41:02,515 INFO L87 Difference]: Start difference. First operand 16080 states and 96475 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:04,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:41:04,857 INFO L93 Difference]: Finished difference Result 16894 states and 99305 transitions. [2021-10-08 16:41:04,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:41:04,858 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:41:04,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:41:04,937 INFO L225 Difference]: With dead ends: 16894 [2021-10-08 16:41:04,937 INFO L226 Difference]: Without dead ends: 16844 [2021-10-08 16:41:04,937 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 416.1ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:41:04,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16844 states. [2021-10-08 16:41:05,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16844 to 16238. [2021-10-08 16:41:05,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16238 states, 16237 states have (on average 5.987128164069717) internal successors, (97213), 16237 states have internal predecessors, (97213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:05,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16238 states to 16238 states and 97213 transitions. [2021-10-08 16:41:05,716 INFO L78 Accepts]: Start accepts. Automaton has 16238 states and 97213 transitions. Word has length 25 [2021-10-08 16:41:05,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:41:05,716 INFO L470 AbstractCegarLoop]: Abstraction has 16238 states and 97213 transitions. [2021-10-08 16:41:05,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:05,716 INFO L276 IsEmpty]: Start isEmpty. Operand 16238 states and 97213 transitions. [2021-10-08 16:41:05,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:41:05,765 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:41:05,765 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:41:05,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2021-10-08 16:41:05,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:41:05,966 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:41:05,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:41:05,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1988413226, now seen corresponding path program 14 times [2021-10-08 16:41:05,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:41:05,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1571144472] [2021-10-08 16:41:05,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:41:05,968 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:41:05,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:41:05,970 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:41:05,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-08 16:41:07,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:41:07,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:41:07,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 16:41:07,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:41:07,852 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:41:07,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:41:08,514 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:41:08,514 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:41:08,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1571144472] [2021-10-08 16:41:08,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1571144472] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:41:08,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:41:08,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:41:08,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282845572] [2021-10-08 16:41:08,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:41:08,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:41:08,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:41:08,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:41:08,517 INFO L87 Difference]: Start difference. First operand 16238 states and 97213 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:14,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:41:14,372 INFO L93 Difference]: Finished difference Result 29572 states and 162454 transitions. [2021-10-08 16:41:14,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 16:41:14,373 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:41:14,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:41:14,523 INFO L225 Difference]: With dead ends: 29572 [2021-10-08 16:41:14,523 INFO L226 Difference]: Without dead ends: 29572 [2021-10-08 16:41:14,523 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 3273.1ms TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2021-10-08 16:41:14,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29572 states. [2021-10-08 16:41:15,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29572 to 18130. [2021-10-08 16:41:15,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18130 states, 18129 states have (on average 5.984941254343869) internal successors, (108501), 18129 states have internal predecessors, (108501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:15,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18130 states to 18130 states and 108501 transitions. [2021-10-08 16:41:15,496 INFO L78 Accepts]: Start accepts. Automaton has 18130 states and 108501 transitions. Word has length 25 [2021-10-08 16:41:15,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:41:15,497 INFO L470 AbstractCegarLoop]: Abstraction has 18130 states and 108501 transitions. [2021-10-08 16:41:15,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:15,497 INFO L276 IsEmpty]: Start isEmpty. Operand 18130 states and 108501 transitions. [2021-10-08 16:41:15,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:41:15,553 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:41:15,553 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] [2021-10-08 16:41:15,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2021-10-08 16:41:15,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:41:15,755 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:41:15,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:41:15,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1694265704, now seen corresponding path program 13 times [2021-10-08 16:41:15,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:41:15,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1643264554] [2021-10-08 16:41:15,756 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:41:15,757 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:41:15,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:41:15,759 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:41:15,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-08 16:41:16,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:41:16,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:41:16,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:41:17,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:41:17,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:41:17,957 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:41:17,958 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:41:17,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1643264554] [2021-10-08 16:41:17,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1643264554] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:41:17,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:41:17,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:41:17,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641476131] [2021-10-08 16:41:17,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:41:17,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:41:17,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:41:17,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:41:17,960 INFO L87 Difference]: Start difference. First operand 18130 states and 108501 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:21,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:41:21,552 INFO L93 Difference]: Finished difference Result 20426 states and 118645 transitions. [2021-10-08 16:41:21,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 16:41:21,553 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:41:21,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:41:21,654 INFO L225 Difference]: With dead ends: 20426 [2021-10-08 16:41:21,655 INFO L226 Difference]: Without dead ends: 20320 [2021-10-08 16:41:21,655 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 346.9ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:41:21,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20320 states. [2021-10-08 16:41:22,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20320 to 18328. [2021-10-08 16:41:22,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18328 states, 18327 states have (on average 5.999454356959677) internal successors, (109952), 18327 states have internal predecessors, (109952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:22,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18328 states to 18328 states and 109952 transitions. [2021-10-08 16:41:22,650 INFO L78 Accepts]: Start accepts. Automaton has 18328 states and 109952 transitions. Word has length 25 [2021-10-08 16:41:22,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:41:22,651 INFO L470 AbstractCegarLoop]: Abstraction has 18328 states and 109952 transitions. [2021-10-08 16:41:22,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:22,651 INFO L276 IsEmpty]: Start isEmpty. Operand 18328 states and 109952 transitions. [2021-10-08 16:41:22,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:41:22,775 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:41:22,775 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] [2021-10-08 16:41:22,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2021-10-08 16:41:22,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:41:22,991 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:41:22,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:41:22,991 INFO L82 PathProgramCache]: Analyzing trace with hash -897459492, now seen corresponding path program 14 times [2021-10-08 16:41:22,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:41:22,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2080569458] [2021-10-08 16:41:22,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:41:22,993 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:41:22,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:41:22,994 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:41:22,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-08 16:41:24,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:41:24,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:41:24,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:41:24,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:41:24,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:41:24,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:41:25,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:41:25,315 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:41:25,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2080569458] [2021-10-08 16:41:25,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2080569458] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:41:25,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:41:25,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:41:25,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327198690] [2021-10-08 16:41:25,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:41:25,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:41:25,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:41:25,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:41:25,317 INFO L87 Difference]: Start difference. First operand 18328 states and 109952 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:26,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:41:26,331 INFO L93 Difference]: Finished difference Result 20000 states and 117436 transitions. [2021-10-08 16:41:26,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 16:41:26,332 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:41:26,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:41:26,441 INFO L225 Difference]: With dead ends: 20000 [2021-10-08 16:41:26,442 INFO L226 Difference]: Without dead ends: 19954 [2021-10-08 16:41:26,442 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 274.0ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:41:26,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19954 states. [2021-10-08 16:41:27,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19954 to 18492. [2021-10-08 16:41:27,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18492 states, 18491 states have (on average 6.009518143961928) internal successors, (111122), 18491 states have internal predecessors, (111122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:27,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18492 states to 18492 states and 111122 transitions. [2021-10-08 16:41:27,306 INFO L78 Accepts]: Start accepts. Automaton has 18492 states and 111122 transitions. Word has length 25 [2021-10-08 16:41:27,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:41:27,306 INFO L470 AbstractCegarLoop]: Abstraction has 18492 states and 111122 transitions. [2021-10-08 16:41:27,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:27,307 INFO L276 IsEmpty]: Start isEmpty. Operand 18492 states and 111122 transitions. [2021-10-08 16:41:27,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:41:27,359 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:41:27,360 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] [2021-10-08 16:41:27,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2021-10-08 16:41:27,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:41:27,568 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:41:27,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:41:27,569 INFO L82 PathProgramCache]: Analyzing trace with hash -511971678, now seen corresponding path program 15 times [2021-10-08 16:41:27,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:41:27,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193529174] [2021-10-08 16:41:27,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:41:27,570 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:41:27,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:41:27,572 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:41:27,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-10-08 16:41:28,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 16:41:28,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:41:28,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:41:28,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:41:29,663 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:41:29,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:41:30,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:41:30,088 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:41:30,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193529174] [2021-10-08 16:41:30,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193529174] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:41:30,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:41:30,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:41:30,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224441209] [2021-10-08 16:41:30,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:41:30,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:41:30,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:41:30,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:41:30,089 INFO L87 Difference]: Start difference. First operand 18492 states and 111122 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:35,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:41:35,303 INFO L93 Difference]: Finished difference Result 19460 states and 114786 transitions. [2021-10-08 16:41:35,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:41:35,304 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:41:35,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:41:35,397 INFO L225 Difference]: With dead ends: 19460 [2021-10-08 16:41:35,397 INFO L226 Difference]: Without dead ends: 19374 [2021-10-08 16:41:35,398 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 334.7ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:41:35,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19374 states. [2021-10-08 16:41:35,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19374 to 18484. [2021-10-08 16:41:35,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18484 states, 18483 states have (on average 6.006817075150138) internal successors, (111024), 18483 states have internal predecessors, (111024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:36,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18484 states to 18484 states and 111024 transitions. [2021-10-08 16:41:36,072 INFO L78 Accepts]: Start accepts. Automaton has 18484 states and 111024 transitions. Word has length 25 [2021-10-08 16:41:36,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:41:36,072 INFO L470 AbstractCegarLoop]: Abstraction has 18484 states and 111024 transitions. [2021-10-08 16:41:36,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:36,072 INFO L276 IsEmpty]: Start isEmpty. Operand 18484 states and 111024 transitions. [2021-10-08 16:41:36,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:41:36,133 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:41:36,133 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] [2021-10-08 16:41:36,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2021-10-08 16:41:36,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:41:36,335 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:41:36,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:41:36,336 INFO L82 PathProgramCache]: Analyzing trace with hash -936282914, now seen corresponding path program 16 times [2021-10-08 16:41:36,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:41:36,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819737182] [2021-10-08 16:41:36,337 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:41:36,337 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:41:36,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:41:36,338 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:41:36,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-10-08 16:41:37,676 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:41:37,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:41:37,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:41:37,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:41:38,389 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:41:38,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:41:38,794 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:41:38,795 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:41:38,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819737182] [2021-10-08 16:41:38,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819737182] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:41:38,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:41:38,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:41:38,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828434762] [2021-10-08 16:41:38,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:41:38,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:41:38,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:41:38,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:41:38,796 INFO L87 Difference]: Start difference. First operand 18484 states and 111024 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:45,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:41:45,259 INFO L93 Difference]: Finished difference Result 19234 states and 113827 transitions. [2021-10-08 16:41:45,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:41:45,259 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:41:45,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:41:45,351 INFO L225 Difference]: With dead ends: 19234 [2021-10-08 16:41:45,352 INFO L226 Difference]: Without dead ends: 19188 [2021-10-08 16:41:45,352 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 426.1ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:41:45,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19188 states. [2021-10-08 16:41:45,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19188 to 18442. [2021-10-08 16:41:45,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18442 states, 18441 states have (on average 6.006127650344341) internal successors, (110759), 18441 states have internal predecessors, (110759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:46,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18442 states to 18442 states and 110759 transitions. [2021-10-08 16:41:46,231 INFO L78 Accepts]: Start accepts. Automaton has 18442 states and 110759 transitions. Word has length 25 [2021-10-08 16:41:46,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:41:46,233 INFO L470 AbstractCegarLoop]: Abstraction has 18442 states and 110759 transitions. [2021-10-08 16:41:46,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:46,233 INFO L276 IsEmpty]: Start isEmpty. Operand 18442 states and 110759 transitions. [2021-10-08 16:41:46,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:41:46,298 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:41:46,298 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] [2021-10-08 16:41:46,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Ended with exit code 0 [2021-10-08 16:41:46,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:41:46,499 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:41:46,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:41:46,501 INFO L82 PathProgramCache]: Analyzing trace with hash -780718106, now seen corresponding path program 17 times [2021-10-08 16:41:46,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:41:46,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [944673076] [2021-10-08 16:41:46,502 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:41:46,502 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:41:46,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:41:46,503 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:41:46,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-10-08 16:41:47,669 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 16:41:47,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:41:47,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:41:47,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:41:48,476 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:41:48,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:41:48,838 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:41:48,839 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:41:48,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [944673076] [2021-10-08 16:41:48,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [944673076] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:41:48,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:41:48,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:41:48,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860058556] [2021-10-08 16:41:48,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:41:48,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:41:48,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:41:48,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:41:48,840 INFO L87 Difference]: Start difference. First operand 18442 states and 110759 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:49,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:41:49,877 INFO L93 Difference]: Finished difference Result 20348 states and 118973 transitions. [2021-10-08 16:41:49,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 16:41:49,877 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:41:49,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:41:49,973 INFO L225 Difference]: With dead ends: 20348 [2021-10-08 16:41:49,973 INFO L226 Difference]: Without dead ends: 20256 [2021-10-08 16:41:49,973 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 286.6ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:41:49,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20256 states. [2021-10-08 16:41:50,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20256 to 18488. [2021-10-08 16:41:50,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18488 states, 18487 states have (on average 6.022610483042138) internal successors, (111340), 18487 states have internal predecessors, (111340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:50,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18488 states to 18488 states and 111340 transitions. [2021-10-08 16:41:50,877 INFO L78 Accepts]: Start accepts. Automaton has 18488 states and 111340 transitions. Word has length 25 [2021-10-08 16:41:50,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:41:50,877 INFO L470 AbstractCegarLoop]: Abstraction has 18488 states and 111340 transitions. [2021-10-08 16:41:50,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:50,878 INFO L276 IsEmpty]: Start isEmpty. Operand 18488 states and 111340 transitions. [2021-10-08 16:41:50,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:41:50,934 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:41:50,934 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] [2021-10-08 16:41:50,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Ended with exit code 0 [2021-10-08 16:41:51,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:41:51,135 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:41:51,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:41:51,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1473775770, now seen corresponding path program 18 times [2021-10-08 16:41:51,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:41:51,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598296755] [2021-10-08 16:41:51,137 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:41:51,137 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:41:51,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:41:51,138 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:41:51,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-10-08 16:41:52,847 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 16:41:52,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:41:52,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:41:52,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:41:53,418 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:41:53,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:41:53,789 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:41:53,790 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:41:53,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1598296755] [2021-10-08 16:41:53,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1598296755] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:41:53,790 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:41:53,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:41:53,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075498732] [2021-10-08 16:41:53,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:41:53,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:41:53,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:41:53,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:41:53,792 INFO L87 Difference]: Start difference. First operand 18488 states and 111340 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:56,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:41:56,846 INFO L93 Difference]: Finished difference Result 19956 states and 117706 transitions. [2021-10-08 16:41:56,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 16:41:56,846 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:41:56,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:41:57,003 INFO L225 Difference]: With dead ends: 19956 [2021-10-08 16:41:57,003 INFO L226 Difference]: Without dead ends: 19910 [2021-10-08 16:41:57,004 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 278.9ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:41:57,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19910 states. [2021-10-08 16:41:57,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19910 to 18570. [2021-10-08 16:41:57,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18570 states, 18569 states have (on average 6.0309655878076365) internal successors, (111989), 18569 states have internal predecessors, (111989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:57,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18570 states to 18570 states and 111989 transitions. [2021-10-08 16:41:57,906 INFO L78 Accepts]: Start accepts. Automaton has 18570 states and 111989 transitions. Word has length 25 [2021-10-08 16:41:57,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:41:57,907 INFO L470 AbstractCegarLoop]: Abstraction has 18570 states and 111989 transitions. [2021-10-08 16:41:57,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:57,907 INFO L276 IsEmpty]: Start isEmpty. Operand 18570 states and 111989 transitions. [2021-10-08 16:41:58,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:41:58,217 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:41:58,218 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:41:58,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2021-10-08 16:41:58,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:41:58,434 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:41:58,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:41:58,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1729166944, now seen corresponding path program 15 times [2021-10-08 16:41:58,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:41:58,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1198682780] [2021-10-08 16:41:58,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:41:58,436 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:41:58,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:41:58,437 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:41:58,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2021-10-08 16:41:59,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 16:41:59,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:41:59,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 16:41:59,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:42:00,360 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:42:00,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:42:01,558 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:42:01,559 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:42:01,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1198682780] [2021-10-08 16:42:01,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1198682780] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:42:01,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:42:01,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2021-10-08 16:42:01,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888137005] [2021-10-08 16:42:01,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 16:42:01,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:42:01,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 16:42:01,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:42:01,560 INFO L87 Difference]: Start difference. First operand 18570 states and 111989 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 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) [2021-10-08 16:42:12,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:42:12,969 INFO L93 Difference]: Finished difference Result 31912 states and 173052 transitions. [2021-10-08 16:42:12,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 16:42:12,971 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 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 26 [2021-10-08 16:42:12,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:42:13,129 INFO L225 Difference]: With dead ends: 31912 [2021-10-08 16:42:13,129 INFO L226 Difference]: Without dead ends: 31902 [2021-10-08 16:42:13,129 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 8251.2ms TimeCoverageRelationStatistics Valid=350, Invalid=1132, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 16:42:13,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31902 states. [2021-10-08 16:42:14,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31902 to 19072. [2021-10-08 16:42:14,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19072 states, 19071 states have (on average 6.020554769021027) internal successors, (114818), 19071 states have internal predecessors, (114818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:42:14,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19072 states to 19072 states and 114818 transitions. [2021-10-08 16:42:14,244 INFO L78 Accepts]: Start accepts. Automaton has 19072 states and 114818 transitions. Word has length 26 [2021-10-08 16:42:14,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:42:14,244 INFO L470 AbstractCegarLoop]: Abstraction has 19072 states and 114818 transitions. [2021-10-08 16:42:14,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 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) [2021-10-08 16:42:14,245 INFO L276 IsEmpty]: Start isEmpty. Operand 19072 states and 114818 transitions. [2021-10-08 16:42:14,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:42:14,305 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:42:14,305 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:42:14,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2021-10-08 16:42:14,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:42:14,506 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:42:14,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:42:14,506 INFO L82 PathProgramCache]: Analyzing trace with hash 2016608226, now seen corresponding path program 16 times [2021-10-08 16:42:14,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:42:14,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [177503945] [2021-10-08 16:42:14,507 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:42:14,507 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:42:14,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:42:14,509 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:42:14,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2021-10-08 16:42:15,678 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:42:15,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:42:15,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:42:15,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:42:16,109 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:42:16,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:42:16,482 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:42:16,482 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:42:16,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [177503945] [2021-10-08 16:42:16,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [177503945] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:42:16,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:42:16,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:42:16,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099187170] [2021-10-08 16:42:16,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:42:16,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:42:16,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:42:16,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:42:16,483 INFO L87 Difference]: Start difference. First operand 19072 states and 114818 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:42:29,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:42:29,511 INFO L93 Difference]: Finished difference Result 30820 states and 170410 transitions. [2021-10-08 16:42:29,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 16:42:29,511 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 16:42:29,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:42:29,874 INFO L225 Difference]: With dead ends: 30820 [2021-10-08 16:42:29,874 INFO L226 Difference]: Without dead ends: 30820 [2021-10-08 16:42:29,874 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1216.4ms TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:42:29,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30820 states. [2021-10-08 16:42:30,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30820 to 20924. [2021-10-08 16:42:30,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20924 states, 20923 states have (on average 6.029106724657076) internal successors, (126147), 20923 states have internal predecessors, (126147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:42:31,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20924 states to 20924 states and 126147 transitions. [2021-10-08 16:42:31,093 INFO L78 Accepts]: Start accepts. Automaton has 20924 states and 126147 transitions. Word has length 26 [2021-10-08 16:42:31,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:42:31,097 INFO L470 AbstractCegarLoop]: Abstraction has 20924 states and 126147 transitions. [2021-10-08 16:42:31,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:42:31,097 INFO L276 IsEmpty]: Start isEmpty. Operand 20924 states and 126147 transitions. [2021-10-08 16:42:31,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:42:31,191 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:42:31,191 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:42:31,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2021-10-08 16:42:31,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:42:31,392 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:42:31,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:42:31,393 INFO L82 PathProgramCache]: Analyzing trace with hash -165803688, now seen corresponding path program 17 times [2021-10-08 16:42:31,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:42:31,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146517888] [2021-10-08 16:42:31,394 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:42:31,394 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:42:31,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:42:31,396 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:42:31,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2021-10-08 16:42:32,705 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 16:42:32,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:42:32,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:42:32,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:42:32,945 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:42:32,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:42:33,270 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:42:33,270 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:42:33,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1146517888] [2021-10-08 16:42:33,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1146517888] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:42:33,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:42:33,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:42:33,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138677061] [2021-10-08 16:42:33,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:42:33,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:42:33,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:42:33,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:42:33,272 INFO L87 Difference]: Start difference. First operand 20924 states and 126147 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:42:42,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:42:42,699 INFO L93 Difference]: Finished difference Result 34416 states and 191914 transitions. [2021-10-08 16:42:42,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 16:42:42,700 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 16:42:42,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:42:43,099 INFO L225 Difference]: With dead ends: 34416 [2021-10-08 16:42:43,100 INFO L226 Difference]: Without dead ends: 34416 [2021-10-08 16:42:43,100 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1414.2ms TimeCoverageRelationStatistics Valid=151, Invalid=661, Unknown=0, NotChecked=0, Total=812 [2021-10-08 16:42:43,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34416 states. [2021-10-08 16:42:43,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34416 to 21796. [2021-10-08 16:42:43,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21796 states, 21795 states have (on average 6.069281945400321) internal successors, (132280), 21795 states have internal predecessors, (132280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:42:44,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21796 states to 21796 states and 132280 transitions. [2021-10-08 16:42:44,383 INFO L78 Accepts]: Start accepts. Automaton has 21796 states and 132280 transitions. Word has length 26 [2021-10-08 16:42:44,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:42:44,383 INFO L470 AbstractCegarLoop]: Abstraction has 21796 states and 132280 transitions. [2021-10-08 16:42:44,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:42:44,383 INFO L276 IsEmpty]: Start isEmpty. Operand 21796 states and 132280 transitions. [2021-10-08 16:42:44,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:42:44,467 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:42:44,467 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:42:44,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Ended with exit code 0 [2021-10-08 16:42:44,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:42:44,668 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:42:44,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:42:44,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1117896290, now seen corresponding path program 18 times [2021-10-08 16:42:44,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:42:44,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1653056770] [2021-10-08 16:42:44,670 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:42:44,670 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:42:44,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:42:44,672 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:42:44,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2021-10-08 16:42:46,048 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 16:42:46,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:42:46,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 16:42:46,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:42:46,301 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:42:46,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:42:46,831 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:42:46,831 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:42:46,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1653056770] [2021-10-08 16:42:46,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1653056770] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:42:46,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:42:46,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-08 16:42:46,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278821123] [2021-10-08 16:42:46,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 16:42:46,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:42:46,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 16:42:46,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:42:46,833 INFO L87 Difference]: Start difference. First operand 21796 states and 132280 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:42:51,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:42:51,409 INFO L93 Difference]: Finished difference Result 45508 states and 245981 transitions. [2021-10-08 16:42:51,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 16:42:51,410 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 16:42:51,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:42:51,701 INFO L225 Difference]: With dead ends: 45508 [2021-10-08 16:42:51,702 INFO L226 Difference]: Without dead ends: 45508 [2021-10-08 16:42:51,702 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 2456.7ms TimeCoverageRelationStatistics Valid=188, Invalid=868, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 16:42:51,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45508 states. [2021-10-08 16:42:52,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45508 to 23032. [2021-10-08 16:42:52,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23032 states, 23031 states have (on average 6.104250792410229) internal successors, (140587), 23031 states have internal predecessors, (140587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:42:53,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23032 states to 23032 states and 140587 transitions. [2021-10-08 16:42:53,368 INFO L78 Accepts]: Start accepts. Automaton has 23032 states and 140587 transitions. Word has length 26 [2021-10-08 16:42:53,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:42:53,369 INFO L470 AbstractCegarLoop]: Abstraction has 23032 states and 140587 transitions. [2021-10-08 16:42:53,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:42:53,369 INFO L276 IsEmpty]: Start isEmpty. Operand 23032 states and 140587 transitions. [2021-10-08 16:42:53,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:42:53,474 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:42:53,474 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:42:53,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2021-10-08 16:42:53,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:42:53,688 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:42:53,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:42:53,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1913292832, now seen corresponding path program 19 times [2021-10-08 16:42:53,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:42:53,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1745443576] [2021-10-08 16:42:53,690 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:42:53,690 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:42:53,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:42:53,691 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:42:53,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2021-10-08 16:42:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:42:54,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 16:42:54,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:42:55,168 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:42:55,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:42:55,841 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:42:55,841 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:42:55,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1745443576] [2021-10-08 16:42:55,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1745443576] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:42:55,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:42:55,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2021-10-08 16:42:55,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128503375] [2021-10-08 16:42:55,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 16:42:55,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:42:55,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 16:42:55,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:42:55,843 INFO L87 Difference]: Start difference. First operand 23032 states and 140587 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 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) [2021-10-08 16:43:08,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:43:08,355 INFO L93 Difference]: Finished difference Result 34578 states and 193426 transitions. [2021-10-08 16:43:08,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-08 16:43:08,357 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 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 26 [2021-10-08 16:43:08,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:43:08,584 INFO L225 Difference]: With dead ends: 34578 [2021-10-08 16:43:08,584 INFO L226 Difference]: Without dead ends: 34482 [2021-10-08 16:43:08,585 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 4708.0ms TimeCoverageRelationStatistics Valid=190, Invalid=932, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 16:43:08,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34482 states. [2021-10-08 16:43:09,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34482 to 23568. [2021-10-08 16:43:09,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23568 states, 23567 states have (on average 6.094029787414605) internal successors, (143618), 23567 states have internal predecessors, (143618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:43:09,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23568 states to 23568 states and 143618 transitions. [2021-10-08 16:43:09,813 INFO L78 Accepts]: Start accepts. Automaton has 23568 states and 143618 transitions. Word has length 26 [2021-10-08 16:43:09,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:43:09,814 INFO L470 AbstractCegarLoop]: Abstraction has 23568 states and 143618 transitions. [2021-10-08 16:43:09,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 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) [2021-10-08 16:43:09,814 INFO L276 IsEmpty]: Start isEmpty. Operand 23568 states and 143618 transitions. [2021-10-08 16:43:09,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:43:09,889 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:43:09,889 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:43:09,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2021-10-08 16:43:10,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:43:10,091 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:43:10,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:43:10,092 INFO L82 PathProgramCache]: Analyzing trace with hash -606522334, now seen corresponding path program 20 times [2021-10-08 16:43:10,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:43:10,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1760766765] [2021-10-08 16:43:10,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:43:10,093 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:43:10,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:43:10,093 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:43:10,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2021-10-08 16:43:11,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:43:11,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:43:11,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 16:43:11,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:43:11,951 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:43:11,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:43:12,882 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:43:12,882 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:43:12,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1760766765] [2021-10-08 16:43:12,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1760766765] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:43:12,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:43:12,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 13 [2021-10-08 16:43:12,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097831538] [2021-10-08 16:43:12,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:43:12,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:43:12,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:43:12,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:43:12,884 INFO L87 Difference]: Start difference. First operand 23568 states and 143618 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) [2021-10-08 16:43:24,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:43:24,346 INFO L93 Difference]: Finished difference Result 50592 states and 283503 transitions. [2021-10-08 16:43:24,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-08 16:43:24,348 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 26 [2021-10-08 16:43:24,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:43:24,713 INFO L225 Difference]: With dead ends: 50592 [2021-10-08 16:43:24,713 INFO L226 Difference]: Without dead ends: 50592 [2021-10-08 16:43:24,714 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 4935.0ms TimeCoverageRelationStatistics Valid=421, Invalid=1385, Unknown=0, NotChecked=0, Total=1806 [2021-10-08 16:43:24,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50592 states. [2021-10-08 16:43:26,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50592 to 27558. [2021-10-08 16:43:26,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27558 states, 27557 states have (on average 6.186522480676416) internal successors, (170482), 27557 states have internal predecessors, (170482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:43:26,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27558 states to 27558 states and 170482 transitions. [2021-10-08 16:43:26,572 INFO L78 Accepts]: Start accepts. Automaton has 27558 states and 170482 transitions. Word has length 26 [2021-10-08 16:43:26,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:43:26,573 INFO L470 AbstractCegarLoop]: Abstraction has 27558 states and 170482 transitions. [2021-10-08 16:43:26,573 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) [2021-10-08 16:43:26,573 INFO L276 IsEmpty]: Start isEmpty. Operand 27558 states and 170482 transitions. [2021-10-08 16:43:26,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:43:26,669 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:43:26,669 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:43:26,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2021-10-08 16:43:26,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:43:26,870 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:43:26,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:43:26,871 INFO L82 PathProgramCache]: Analyzing trace with hash 726504042, now seen corresponding path program 21 times [2021-10-08 16:43:26,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:43:26,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240326719] [2021-10-08 16:43:26,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:43:26,872 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:43:26,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:43:26,873 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:43:26,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2021-10-08 16:43:28,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 16:43:28,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:43:28,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 16:43:28,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:43:28,976 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:43:28,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:43:29,572 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:43:29,573 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:43:29,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240326719] [2021-10-08 16:43:29,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1240326719] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:43:29,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:43:29,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-08 16:43:29,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754317660] [2021-10-08 16:43:29,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 16:43:29,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:43:29,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 16:43:29,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:43:29,575 INFO L87 Difference]: Start difference. First operand 27558 states and 170482 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:43:37,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:43:37,896 INFO L93 Difference]: Finished difference Result 45544 states and 259167 transitions. [2021-10-08 16:43:37,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 16:43:37,897 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 16:43:37,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:43:38,262 INFO L225 Difference]: With dead ends: 45544 [2021-10-08 16:43:38,262 INFO L226 Difference]: Without dead ends: 45498 [2021-10-08 16:43:38,262 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1797.9ms TimeCoverageRelationStatistics Valid=156, Invalid=656, Unknown=0, NotChecked=0, Total=812 [2021-10-08 16:43:38,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45498 states. [2021-10-08 16:43:39,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45498 to 27252. [2021-10-08 16:43:39,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27252 states, 27251 states have (on average 6.155040182011669) internal successors, (167731), 27251 states have internal predecessors, (167731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:43:39,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27252 states to 27252 states and 167731 transitions. [2021-10-08 16:43:39,971 INFO L78 Accepts]: Start accepts. Automaton has 27252 states and 167731 transitions. Word has length 26 [2021-10-08 16:43:39,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:43:39,971 INFO L470 AbstractCegarLoop]: Abstraction has 27252 states and 167731 transitions. [2021-10-08 16:43:39,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:43:39,971 INFO L276 IsEmpty]: Start isEmpty. Operand 27252 states and 167731 transitions. [2021-10-08 16:43:40,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:43:40,060 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:43:40,060 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:43:40,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Ended with exit code 0 [2021-10-08 16:43:40,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:43:40,261 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:43:40,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:43:40,262 INFO L82 PathProgramCache]: Analyzing trace with hash -167748032, now seen corresponding path program 22 times [2021-10-08 16:43:40,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:43:40,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730737308] [2021-10-08 16:43:40,264 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:43:40,264 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:43:40,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:43:40,265 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:43:40,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2021-10-08 16:43:41,827 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:43:41,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:43:41,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 16:43:41,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:43:42,588 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:43:42,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:43:43,233 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:43:43,234 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:43:43,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730737308] [2021-10-08 16:43:43,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730737308] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:43:43,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:43:43,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2021-10-08 16:43:43,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84118456] [2021-10-08 16:43:43,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 16:43:43,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:43:43,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 16:43:43,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:43:43,236 INFO L87 Difference]: Start difference. First operand 27252 states and 167731 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 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) [2021-10-08 16:43:58,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:43:58,163 INFO L93 Difference]: Finished difference Result 34584 states and 199999 transitions. [2021-10-08 16:43:58,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 16:43:58,164 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 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 26 [2021-10-08 16:43:58,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:43:58,360 INFO L225 Difference]: With dead ends: 34584 [2021-10-08 16:43:58,360 INFO L226 Difference]: Without dead ends: 34532 [2021-10-08 16:43:58,360 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 6389.5ms TimeCoverageRelationStatistics Valid=158, Invalid=771, Unknown=1, NotChecked=0, Total=930 [2021-10-08 16:43:58,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34532 states. [2021-10-08 16:43:59,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34532 to 27840. [2021-10-08 16:43:59,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27840 states, 27839 states have (on average 6.14045044721434) internal successors, (170944), 27839 states have internal predecessors, (170944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:43:59,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27840 states to 27840 states and 170944 transitions. [2021-10-08 16:43:59,934 INFO L78 Accepts]: Start accepts. Automaton has 27840 states and 170944 transitions. Word has length 26 [2021-10-08 16:43:59,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:43:59,935 INFO L470 AbstractCegarLoop]: Abstraction has 27840 states and 170944 transitions. [2021-10-08 16:43:59,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 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) [2021-10-08 16:43:59,935 INFO L276 IsEmpty]: Start isEmpty. Operand 27840 states and 170944 transitions. [2021-10-08 16:44:00,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:44:00,037 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:44:00,037 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:44:00,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2021-10-08 16:44:00,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:44:00,238 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:44:00,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:44:00,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1255586682, now seen corresponding path program 23 times [2021-10-08 16:44:00,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:44:00,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1984328790] [2021-10-08 16:44:00,240 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:44:00,240 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:44:00,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:44:00,242 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:44:00,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2021-10-08 16:44:01,832 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:44:01,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:44:01,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 16:44:01,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:44:02,320 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:44:02,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:44:02,852 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:44:02,852 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:44:02,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1984328790] [2021-10-08 16:44:02,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1984328790] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:44:02,853 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:44:02,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-08 16:44:02,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001236062] [2021-10-08 16:44:02,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 16:44:02,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:44:02,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 16:44:02,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:44:02,854 INFO L87 Difference]: Start difference. First operand 27840 states and 170944 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) [2021-10-08 16:44:13,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:44:13,957 INFO L93 Difference]: Finished difference Result 33434 states and 197331 transitions. [2021-10-08 16:44:13,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 16:44:13,958 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 26 [2021-10-08 16:44:13,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:44:14,150 INFO L225 Difference]: With dead ends: 33434 [2021-10-08 16:44:14,150 INFO L226 Difference]: Without dead ends: 33370 [2021-10-08 16:44:14,151 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 3083.5ms TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2021-10-08 16:44:14,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33370 states. [2021-10-08 16:44:15,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33370 to 27146. [2021-10-08 16:44:15,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27146 states, 27145 states have (on average 6.157892797937005) internal successors, (167156), 27145 states have internal predecessors, (167156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:44:15,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27146 states to 27146 states and 167156 transitions. [2021-10-08 16:44:15,382 INFO L78 Accepts]: Start accepts. Automaton has 27146 states and 167156 transitions. Word has length 26 [2021-10-08 16:44:15,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:44:15,382 INFO L470 AbstractCegarLoop]: Abstraction has 27146 states and 167156 transitions. [2021-10-08 16:44:15,383 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) [2021-10-08 16:44:15,383 INFO L276 IsEmpty]: Start isEmpty. Operand 27146 states and 167156 transitions. [2021-10-08 16:44:15,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:44:15,858 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:44:15,858 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:44:15,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Forceful destruction successful, exit code 0 [2021-10-08 16:44:16,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:44:16,073 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:44:16,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:44:16,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1241068312, now seen corresponding path program 24 times [2021-10-08 16:44:16,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:44:16,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374276952] [2021-10-08 16:44:16,074 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:44:16,074 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:44:16,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:44:16,075 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:44:16,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2021-10-08 16:44:17,656 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 16:44:17,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:44:17,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 16:44:17,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:44:18,002 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:44:18,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:44:18,670 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:44:18,670 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:44:18,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374276952] [2021-10-08 16:44:18,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [374276952] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:44:18,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:44:18,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-08 16:44:18,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686795836] [2021-10-08 16:44:18,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 16:44:18,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:44:18,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 16:44:18,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:44:18,672 INFO L87 Difference]: Start difference. First operand 27146 states and 167156 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:44:24,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:44:24,523 INFO L93 Difference]: Finished difference Result 58834 states and 322363 transitions. [2021-10-08 16:44:24,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 16:44:24,524 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 16:44:24,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:44:24,949 INFO L225 Difference]: With dead ends: 58834 [2021-10-08 16:44:24,949 INFO L226 Difference]: Without dead ends: 58834 [2021-10-08 16:44:24,949 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 2564.9ms TimeCoverageRelationStatistics Valid=203, Invalid=789, Unknown=0, NotChecked=0, Total=992 [2021-10-08 16:44:25,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58834 states. [2021-10-08 16:44:26,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58834 to 29842. [2021-10-08 16:44:26,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29842 states, 29841 states have (on average 6.215709929291914) internal successors, (185483), 29841 states have internal predecessors, (185483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:44:27,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29842 states to 29842 states and 185483 transitions. [2021-10-08 16:44:27,220 INFO L78 Accepts]: Start accepts. Automaton has 29842 states and 185483 transitions. Word has length 26 [2021-10-08 16:44:27,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:44:27,220 INFO L470 AbstractCegarLoop]: Abstraction has 29842 states and 185483 transitions. [2021-10-08 16:44:27,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:44:27,220 INFO L276 IsEmpty]: Start isEmpty. Operand 29842 states and 185483 transitions. [2021-10-08 16:44:27,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:44:27,344 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:44:27,344 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:44:27,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Forceful destruction successful, exit code 0 [2021-10-08 16:44:27,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:44:27,545 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:44:27,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:44:27,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1597799334, now seen corresponding path program 25 times [2021-10-08 16:44:27,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:44:27,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1984787112] [2021-10-08 16:44:27,547 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:44:27,547 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:44:27,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:44:27,548 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:44:27,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2021-10-08 16:44:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:44:28,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 16:44:28,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:44:31,165 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:44:31,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:44:32,083 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:44:32,083 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:44:32,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1984787112] [2021-10-08 16:44:32,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1984787112] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:44:32,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:44:32,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2021-10-08 16:44:32,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982939745] [2021-10-08 16:44:32,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 16:44:32,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:44:32,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 16:44:32,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=196, Unknown=1, NotChecked=0, Total=240 [2021-10-08 16:44:32,085 INFO L87 Difference]: Start difference. First operand 29842 states and 185483 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 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) [2021-10-08 16:44:48,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:44:48,047 INFO L93 Difference]: Finished difference Result 40436 states and 232086 transitions. [2021-10-08 16:44:48,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 16:44:48,048 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 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 26 [2021-10-08 16:44:48,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:44:48,293 INFO L225 Difference]: With dead ends: 40436 [2021-10-08 16:44:48,293 INFO L226 Difference]: Without dead ends: 40350 [2021-10-08 16:44:48,294 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 10300.2ms TimeCoverageRelationStatistics Valid=185, Invalid=935, Unknown=2, NotChecked=0, Total=1122 [2021-10-08 16:44:48,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40350 states. [2021-10-08 16:44:49,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40350 to 30608. [2021-10-08 16:44:49,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30608 states, 30607 states have (on average 6.200705720913517) internal successors, (189785), 30607 states have internal predecessors, (189785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:44:49,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30608 states to 30608 states and 189785 transitions. [2021-10-08 16:44:49,981 INFO L78 Accepts]: Start accepts. Automaton has 30608 states and 189785 transitions. Word has length 26 [2021-10-08 16:44:49,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:44:49,981 INFO L470 AbstractCegarLoop]: Abstraction has 30608 states and 189785 transitions. [2021-10-08 16:44:49,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 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) [2021-10-08 16:44:49,982 INFO L276 IsEmpty]: Start isEmpty. Operand 30608 states and 189785 transitions. [2021-10-08 16:44:50,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:44:50,087 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:44:50,087 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:44:50,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Ended with exit code 0 [2021-10-08 16:44:50,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:44:50,288 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:44:50,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:44:50,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1393288832, now seen corresponding path program 26 times [2021-10-08 16:44:50,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:44:50,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766159782] [2021-10-08 16:44:50,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:44:50,290 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:44:50,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:44:50,291 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:44:50,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2021-10-08 16:44:52,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:44:52,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:44:52,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 16:44:52,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:44:53,368 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:44:53,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:44:54,674 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:44:54,674 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:44:54,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766159782] [2021-10-08 16:44:54,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766159782] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:44:54,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:44:54,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 16 [2021-10-08 16:44:54,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593622860] [2021-10-08 16:44:54,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-08 16:44:54,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:44:54,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-08 16:44:54,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:44:54,677 INFO L87 Difference]: Start difference. First operand 30608 states and 189785 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:45:17,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:45:17,566 INFO L93 Difference]: Finished difference Result 45441 states and 255479 transitions. [2021-10-08 16:45:17,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-08 16:45:17,567 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 16:45:17,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:45:18,052 INFO L225 Difference]: With dead ends: 45441 [2021-10-08 16:45:18,052 INFO L226 Difference]: Without dead ends: 45246 [2021-10-08 16:45:18,053 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 12122.5ms TimeCoverageRelationStatistics Valid=824, Invalid=2482, Unknown=0, NotChecked=0, Total=3306 [2021-10-08 16:45:18,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45246 states. [2021-10-08 16:45:19,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45246 to 31088. [2021-10-08 16:45:19,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31088 states, 31087 states have (on average 6.193810917746968) internal successors, (192547), 31087 states have internal predecessors, (192547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:45:20,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31088 states to 31088 states and 192547 transitions. [2021-10-08 16:45:20,053 INFO L78 Accepts]: Start accepts. Automaton has 31088 states and 192547 transitions. Word has length 26 [2021-10-08 16:45:20,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:45:20,053 INFO L470 AbstractCegarLoop]: Abstraction has 31088 states and 192547 transitions. [2021-10-08 16:45:20,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:45:20,053 INFO L276 IsEmpty]: Start isEmpty. Operand 31088 states and 192547 transitions. [2021-10-08 16:45:20,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:45:20,222 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:45:20,222 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:45:20,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2021-10-08 16:45:20,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:45:20,437 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:45:20,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:45:20,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1200095174, now seen corresponding path program 19 times [2021-10-08 16:45:20,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:45:20,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454303104] [2021-10-08 16:45:20,439 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:45:20,439 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:45:20,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:45:20,441 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:45:20,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2021-10-08 16:45:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:45:21,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:45:21,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:45:21,968 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:45:21,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:45:22,306 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:45:22,307 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:45:22,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454303104] [2021-10-08 16:45:22,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1454303104] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:45:22,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:45:22,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-08 16:45:22,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407299800] [2021-10-08 16:45:22,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:45:22,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:45:22,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:45:22,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:45:22,309 INFO L87 Difference]: Start difference. First operand 31088 states and 192547 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 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) [2021-10-08 16:45:27,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:45:27,094 INFO L93 Difference]: Finished difference Result 36594 states and 218675 transitions. [2021-10-08 16:45:27,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 16:45:27,095 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 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 26 [2021-10-08 16:45:27,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:45:27,569 INFO L225 Difference]: With dead ends: 36594 [2021-10-08 16:45:27,569 INFO L226 Difference]: Without dead ends: 36552 [2021-10-08 16:45:27,570 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 838.0ms TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-10-08 16:45:27,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36552 states. [2021-10-08 16:45:28,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36552 to 30506. [2021-10-08 16:45:28,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30506 states, 30505 states have (on average 6.220127847893788) internal successors, (189745), 30505 states have internal predecessors, (189745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:45:29,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30506 states to 30506 states and 189745 transitions. [2021-10-08 16:45:29,072 INFO L78 Accepts]: Start accepts. Automaton has 30506 states and 189745 transitions. Word has length 26 [2021-10-08 16:45:29,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:45:29,072 INFO L470 AbstractCegarLoop]: Abstraction has 30506 states and 189745 transitions. [2021-10-08 16:45:29,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 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) [2021-10-08 16:45:29,073 INFO L276 IsEmpty]: Start isEmpty. Operand 30506 states and 189745 transitions. [2021-10-08 16:45:29,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:45:29,523 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:45:29,523 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:45:29,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Forceful destruction successful, exit code 0 [2021-10-08 16:45:29,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:45:29,724 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:45:29,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:45:29,725 INFO L82 PathProgramCache]: Analyzing trace with hash 2091285622, now seen corresponding path program 20 times [2021-10-08 16:45:29,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:45:29,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [438699979] [2021-10-08 16:45:29,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:45:29,726 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:45:29,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:45:29,728 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:45:29,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2021-10-08 16:45:31,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:45:31,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:45:31,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:45:31,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:45:31,518 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:45:31,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:45:31,843 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:45:31,844 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:45:31,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [438699979] [2021-10-08 16:45:31,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [438699979] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:45:31,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:45:31,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:45:31,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976347280] [2021-10-08 16:45:31,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:45:31,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:45:31,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:45:31,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:45:31,845 INFO L87 Difference]: Start difference. First operand 30506 states and 189745 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) [2021-10-08 16:45:37,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:45:37,401 INFO L93 Difference]: Finished difference Result 37124 states and 224013 transitions. [2021-10-08 16:45:37,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 16:45:37,401 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 26 [2021-10-08 16:45:37,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:45:37,621 INFO L225 Difference]: With dead ends: 37124 [2021-10-08 16:45:37,621 INFO L226 Difference]: Without dead ends: 37124 [2021-10-08 16:45:37,621 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1047.0ms TimeCoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2021-10-08 16:45:37,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37124 states. [2021-10-08 16:45:38,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37124 to 32264. [2021-10-08 16:45:38,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32264 states, 32263 states have (on average 6.229426897684654) internal successors, (200980), 32263 states have internal predecessors, (200980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:45:39,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32264 states to 32264 states and 200980 transitions. [2021-10-08 16:45:39,473 INFO L78 Accepts]: Start accepts. Automaton has 32264 states and 200980 transitions. Word has length 26 [2021-10-08 16:45:39,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:45:39,473 INFO L470 AbstractCegarLoop]: Abstraction has 32264 states and 200980 transitions. [2021-10-08 16:45:39,473 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) [2021-10-08 16:45:39,473 INFO L276 IsEmpty]: Start isEmpty. Operand 32264 states and 200980 transitions. [2021-10-08 16:45:39,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:45:39,588 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:45:39,588 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:45:39,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Forceful destruction successful, exit code 0 [2021-10-08 16:45:39,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:45:39,790 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:45:39,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:45:39,790 INFO L82 PathProgramCache]: Analyzing trace with hash 944833956, now seen corresponding path program 21 times [2021-10-08 16:45:39,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:45:39,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [156714917] [2021-10-08 16:45:39,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:45:39,791 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:45:39,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:45:39,792 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:45:39,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2021-10-08 16:45:41,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 16:45:41,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:45:41,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 16:45:41,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:45:42,045 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:45:42,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:45:42,546 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:45:42,546 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:45:42,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [156714917] [2021-10-08 16:45:42,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [156714917] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:45:42,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:45:42,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-08 16:45:42,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576761090] [2021-10-08 16:45:42,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 16:45:42,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:45:42,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 16:45:42,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:45:42,548 INFO L87 Difference]: Start difference. First operand 32264 states and 200980 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-08 16:45:47,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:45:47,468 INFO L93 Difference]: Finished difference Result 38676 states and 230703 transitions. [2021-10-08 16:45:47,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 16:45:47,468 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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 26 [2021-10-08 16:45:47,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:45:47,709 INFO L225 Difference]: With dead ends: 38676 [2021-10-08 16:45:47,710 INFO L226 Difference]: Without dead ends: 38640 [2021-10-08 16:45:47,710 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1298.5ms TimeCoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2021-10-08 16:45:47,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38640 states. [2021-10-08 16:45:48,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38640 to 33312. [2021-10-08 16:45:49,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33312 states, 33311 states have (on average 6.182011948005163) internal successors, (205929), 33311 states have internal predecessors, (205929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:45:49,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33312 states to 33312 states and 205929 transitions. [2021-10-08 16:45:49,608 INFO L78 Accepts]: Start accepts. Automaton has 33312 states and 205929 transitions. Word has length 26 [2021-10-08 16:45:49,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:45:49,608 INFO L470 AbstractCegarLoop]: Abstraction has 33312 states and 205929 transitions. [2021-10-08 16:45:49,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-08 16:45:49,610 INFO L276 IsEmpty]: Start isEmpty. Operand 33312 states and 205929 transitions. [2021-10-08 16:45:49,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:45:49,747 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:45:49,748 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:45:49,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2021-10-08 16:45:49,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:45:49,949 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:45:49,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:45:49,950 INFO L82 PathProgramCache]: Analyzing trace with hash -105830646, now seen corresponding path program 22 times [2021-10-08 16:45:49,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:45:49,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687269412] [2021-10-08 16:45:49,952 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:45:49,952 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:45:49,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:45:49,953 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:45:49,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2021-10-08 16:45:51,313 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:45:51,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:45:51,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 16:45:51,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:45:51,949 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:45:51,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:45:52,505 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:45:52,505 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:45:52,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687269412] [2021-10-08 16:45:52,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687269412] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:45:52,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:45:52,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-08 16:45:52,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940770836] [2021-10-08 16:45:52,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 16:45:52,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:45:52,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 16:45:52,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:45:52,507 INFO L87 Difference]: Start difference. First operand 33312 states and 205929 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 15 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) [2021-10-08 16:46:01,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:46:01,417 INFO L93 Difference]: Finished difference Result 46398 states and 273650 transitions. [2021-10-08 16:46:01,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 16:46:01,418 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 15 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 26 [2021-10-08 16:46:01,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:46:01,745 INFO L225 Difference]: With dead ends: 46398 [2021-10-08 16:46:01,746 INFO L226 Difference]: Without dead ends: 46398 [2021-10-08 16:46:01,746 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1377.9ms TimeCoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2021-10-08 16:46:01,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46398 states. [2021-10-08 16:46:03,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46398 to 34650. [2021-10-08 16:46:03,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34650 states, 34649 states have (on average 6.248376576524575) internal successors, (216500), 34649 states have internal predecessors, (216500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:46:03,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34650 states to 34650 states and 216500 transitions. [2021-10-08 16:46:03,863 INFO L78 Accepts]: Start accepts. Automaton has 34650 states and 216500 transitions. Word has length 26 [2021-10-08 16:46:03,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:46:03,863 INFO L470 AbstractCegarLoop]: Abstraction has 34650 states and 216500 transitions. [2021-10-08 16:46:03,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 15 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) [2021-10-08 16:46:03,863 INFO L276 IsEmpty]: Start isEmpty. Operand 34650 states and 216500 transitions. [2021-10-08 16:46:03,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:46:03,981 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:46:03,981 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:46:04,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Forceful destruction successful, exit code 0 [2021-10-08 16:46:04,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:46:04,182 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:46:04,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:46:04,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1444512676, now seen corresponding path program 23 times [2021-10-08 16:46:04,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:46:04,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770584217] [2021-10-08 16:46:04,184 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:46:04,185 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:46:04,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:46:04,186 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:46:04,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2021-10-08 16:46:05,920 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:46:05,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:46:05,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 16:46:05,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:46:06,219 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:46:06,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:46:07,267 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:46:07,268 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:46:07,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770584217] [2021-10-08 16:46:07,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1770584217] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:46:07,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:46:07,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-08 16:46:07,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892078839] [2021-10-08 16:46:07,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 16:46:07,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:46:07,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 16:46:07,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:46:07,270 INFO L87 Difference]: Start difference. First operand 34650 states and 216500 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-08 16:46:20,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:46:20,331 INFO L93 Difference]: Finished difference Result 48252 states and 288363 transitions. [2021-10-08 16:46:20,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-08 16:46:20,332 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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 26 [2021-10-08 16:46:20,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:46:20,947 INFO L225 Difference]: With dead ends: 48252 [2021-10-08 16:46:20,947 INFO L226 Difference]: Without dead ends: 48228 [2021-10-08 16:46:20,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 3849.8ms TimeCoverageRelationStatistics Valid=273, Invalid=1133, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 16:46:20,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48228 states. [2021-10-08 16:46:22,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48228 to 37196. [2021-10-08 16:46:22,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37196 states, 37195 states have (on average 6.293292109154456) internal successors, (234079), 37195 states have internal predecessors, (234079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:46:23,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37196 states to 37196 states and 234079 transitions. [2021-10-08 16:46:23,292 INFO L78 Accepts]: Start accepts. Automaton has 37196 states and 234079 transitions. Word has length 26 [2021-10-08 16:46:23,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:46:23,292 INFO L470 AbstractCegarLoop]: Abstraction has 37196 states and 234079 transitions. [2021-10-08 16:46:23,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-08 16:46:23,292 INFO L276 IsEmpty]: Start isEmpty. Operand 37196 states and 234079 transitions. [2021-10-08 16:46:23,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:46:23,444 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:46:23,444 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:46:23,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Forceful destruction successful, exit code 0 [2021-10-08 16:46:23,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:46:23,645 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:46:23,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:46:23,646 INFO L82 PathProgramCache]: Analyzing trace with hash -924215754, now seen corresponding path program 24 times [2021-10-08 16:46:23,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:46:23,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1012804508] [2021-10-08 16:46:23,647 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:46:23,648 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:46:23,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:46:23,648 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:46:23,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2021-10-08 16:46:25,693 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 16:46:25,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:46:25,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 16:46:25,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:46:26,927 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:46:26,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:46:27,757 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:46:27,757 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:46:27,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1012804508] [2021-10-08 16:46:27,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1012804508] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:46:27,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:46:27,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-08 16:46:27,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331673522] [2021-10-08 16:46:27,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 16:46:27,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:46:27,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 16:46:27,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:46:27,759 INFO L87 Difference]: Start difference. First operand 37196 states and 234079 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 15 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) [2021-10-08 16:46:33,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:46:33,170 INFO L93 Difference]: Finished difference Result 54712 states and 324886 transitions. [2021-10-08 16:46:33,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 16:46:33,172 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 15 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 26 [2021-10-08 16:46:33,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:46:33,835 INFO L225 Difference]: With dead ends: 54712 [2021-10-08 16:46:33,835 INFO L226 Difference]: Without dead ends: 54712 [2021-10-08 16:46:33,836 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 2799.9ms TimeCoverageRelationStatistics Valid=184, Invalid=686, Unknown=0, NotChecked=0, Total=870 [2021-10-08 16:46:33,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54712 states. [2021-10-08 16:46:35,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54712 to 39756. [2021-10-08 16:46:35,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39756 states, 39755 states have (on average 6.342925418186391) internal successors, (252163), 39755 states have internal predecessors, (252163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:46:36,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39756 states to 39756 states and 252163 transitions. [2021-10-08 16:46:36,323 INFO L78 Accepts]: Start accepts. Automaton has 39756 states and 252163 transitions. Word has length 26 [2021-10-08 16:46:36,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:46:36,323 INFO L470 AbstractCegarLoop]: Abstraction has 39756 states and 252163 transitions. [2021-10-08 16:46:36,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 15 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) [2021-10-08 16:46:36,324 INFO L276 IsEmpty]: Start isEmpty. Operand 39756 states and 252163 transitions. [2021-10-08 16:46:36,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:46:36,464 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:46:36,464 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:46:36,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Forceful destruction successful, exit code 0 [2021-10-08 16:46:36,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:46:36,665 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:46:36,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:46:36,666 INFO L82 PathProgramCache]: Analyzing trace with hash 418074276, now seen corresponding path program 25 times [2021-10-08 16:46:36,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:46:36,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900073105] [2021-10-08 16:46:36,667 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:46:36,668 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:46:36,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:46:36,669 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:46:36,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2021-10-08 16:46:38,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:46:38,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 16:46:38,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:46:38,794 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:46:38,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:46:39,306 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:46:39,306 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:46:39,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900073105] [2021-10-08 16:46:39,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900073105] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:46:39,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:46:39,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-08 16:46:39,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957438952] [2021-10-08 16:46:39,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 16:46:39,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:46:39,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 16:46:39,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:46:39,308 INFO L87 Difference]: Start difference. First operand 39756 states and 252163 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-08 16:46:45,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:46:45,067 INFO L93 Difference]: Finished difference Result 50940 states and 306198 transitions. [2021-10-08 16:46:45,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 16:46:45,068 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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 26 [2021-10-08 16:46:45,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:46:45,426 INFO L225 Difference]: With dead ends: 50940 [2021-10-08 16:46:45,427 INFO L226 Difference]: Without dead ends: 50902 [2021-10-08 16:46:45,427 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1243.2ms TimeCoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2021-10-08 16:46:45,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50902 states. [2021-10-08 16:46:47,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50902 to 40004. [2021-10-08 16:46:47,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40004 states, 40003 states have (on average 6.335599830012749) internal successors, (253443), 40003 states have internal predecessors, (253443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:46:47,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40004 states to 40004 states and 253443 transitions. [2021-10-08 16:46:47,768 INFO L78 Accepts]: Start accepts. Automaton has 40004 states and 253443 transitions. Word has length 26 [2021-10-08 16:46:47,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:46:47,768 INFO L470 AbstractCegarLoop]: Abstraction has 40004 states and 253443 transitions. [2021-10-08 16:46:47,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-08 16:46:47,768 INFO L276 IsEmpty]: Start isEmpty. Operand 40004 states and 253443 transitions. [2021-10-08 16:46:48,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:46:48,409 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:46:48,409 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:46:48,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Forceful destruction successful, exit code 0 [2021-10-08 16:46:48,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:46:48,624 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:46:48,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:46:48,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1688092034, now seen corresponding path program 26 times [2021-10-08 16:46:48,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:46:48,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618524702] [2021-10-08 16:46:48,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:46:48,625 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:46:48,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:46:48,626 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:46:48,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2021-10-08 16:46:50,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:46:50,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:46:50,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 16:46:50,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:46:52,524 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:46:52,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:46:53,046 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:46:53,046 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:46:53,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618524702] [2021-10-08 16:46:53,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618524702] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:46:53,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:46:53,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-08 16:46:53,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277649601] [2021-10-08 16:46:53,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 16:46:53,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:46:53,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 16:46:53,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=168, Unknown=1, NotChecked=0, Total=210 [2021-10-08 16:46:53,048 INFO L87 Difference]: Start difference. First operand 40004 states and 253443 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-08 16:47:10,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:47:10,866 INFO L93 Difference]: Finished difference Result 49820 states and 301992 transitions. [2021-10-08 16:47:10,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 16:47:10,867 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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 26 [2021-10-08 16:47:10,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:47:11,532 INFO L225 Difference]: With dead ends: 49820 [2021-10-08 16:47:11,532 INFO L226 Difference]: Without dead ends: 49648 [2021-10-08 16:47:11,533 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 11026.1ms TimeCoverageRelationStatistics Valid=110, Invalid=394, Unknown=2, NotChecked=0, Total=506 [2021-10-08 16:47:11,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49648 states. [2021-10-08 16:47:13,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49648 to 40302. [2021-10-08 16:47:13,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40302 states, 40301 states have (on average 6.36162874370363) internal successors, (256380), 40301 states have internal predecessors, (256380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:47:13,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40302 states to 40302 states and 256380 transitions. [2021-10-08 16:47:13,919 INFO L78 Accepts]: Start accepts. Automaton has 40302 states and 256380 transitions. Word has length 26 [2021-10-08 16:47:13,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:47:13,919 INFO L470 AbstractCegarLoop]: Abstraction has 40302 states and 256380 transitions. [2021-10-08 16:47:13,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-08 16:47:13,919 INFO L276 IsEmpty]: Start isEmpty. Operand 40302 states and 256380 transitions. [2021-10-08 16:47:14,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:47:14,173 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:47:14,173 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:47:14,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Forceful destruction successful, exit code 0 [2021-10-08 16:47:14,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:47:14,381 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:47:14,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:47:14,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1953571812, now seen corresponding path program 27 times [2021-10-08 16:47:14,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:47:14,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [86982906] [2021-10-08 16:47:14,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:47:14,383 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:47:14,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:47:14,384 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:47:14,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Waiting until timeout for monitored process [2021-10-08 16:47:16,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 16:47:16,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:47:16,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 16:47:16,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:47:18,335 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:47:18,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:47:18,848 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:47:18,849 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:47:18,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [86982906] [2021-10-08 16:47:18,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [86982906] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:47:18,849 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:47:18,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-08 16:47:18,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145202029] [2021-10-08 16:47:18,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 16:47:18,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:47:18,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 16:47:18,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=170, Unknown=1, NotChecked=0, Total=210 [2021-10-08 16:47:18,851 INFO L87 Difference]: Start difference. First operand 40302 states and 256380 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-08 16:47:38,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:47:38,939 INFO L93 Difference]: Finished difference Result 50990 states and 307180 transitions. [2021-10-08 16:47:38,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 16:47:38,940 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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 26 [2021-10-08 16:47:38,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:47:39,725 INFO L225 Difference]: With dead ends: 50990 [2021-10-08 16:47:39,726 INFO L226 Difference]: Without dead ends: 50936 [2021-10-08 16:47:39,726 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 13487.4ms TimeCoverageRelationStatistics Valid=126, Invalid=572, Unknown=4, NotChecked=0, Total=702 [2021-10-08 16:47:39,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50936 states. [2021-10-08 16:47:41,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50936 to 40864. [2021-10-08 16:47:41,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40864 states, 40863 states have (on average 6.366248195188802) internal successors, (260144), 40863 states have internal predecessors, (260144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:47:42,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40864 states to 40864 states and 260144 transitions. [2021-10-08 16:47:42,416 INFO L78 Accepts]: Start accepts. Automaton has 40864 states and 260144 transitions. Word has length 26 [2021-10-08 16:47:42,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:47:42,416 INFO L470 AbstractCegarLoop]: Abstraction has 40864 states and 260144 transitions. [2021-10-08 16:47:42,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-08 16:47:42,416 INFO L276 IsEmpty]: Start isEmpty. Operand 40864 states and 260144 transitions. [2021-10-08 16:47:42,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:47:42,595 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:47:42,595 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:47:42,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Forceful destruction successful, exit code 0 [2021-10-08 16:47:42,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:47:42,798 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:47:42,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:47:42,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1347898762, now seen corresponding path program 28 times [2021-10-08 16:47:42,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:47:42,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [681170613] [2021-10-08 16:47:42,799 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:47:42,800 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:47:42,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:47:42,801 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:47:42,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2021-10-08 16:47:44,351 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:47:44,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:47:44,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 16:47:44,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:47:45,237 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:47:45,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:47:45,823 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:47:45,824 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:47:45,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [681170613] [2021-10-08 16:47:45,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [681170613] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:47:45,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:47:45,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-08 16:47:45,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247206327] [2021-10-08 16:47:45,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 16:47:45,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:47:45,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 16:47:45,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:47:45,825 INFO L87 Difference]: Start difference. First operand 40864 states and 260144 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 15 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) [2021-10-08 16:47:54,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:47:54,381 INFO L93 Difference]: Finished difference Result 56014 states and 340511 transitions. [2021-10-08 16:47:54,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 16:47:54,382 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 15 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 26 [2021-10-08 16:47:54,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:47:54,841 INFO L225 Difference]: With dead ends: 56014 [2021-10-08 16:47:54,841 INFO L226 Difference]: Without dead ends: 56014 [2021-10-08 16:47:54,842 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1559.4ms TimeCoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2021-10-08 16:47:54,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56014 states. [2021-10-08 16:47:56,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56014 to 43202. [2021-10-08 16:47:57,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43202 states, 43201 states have (on average 6.401356450082174) internal successors, (276545), 43201 states have internal predecessors, (276545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:47:57,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43202 states to 43202 states and 276545 transitions. [2021-10-08 16:47:57,835 INFO L78 Accepts]: Start accepts. Automaton has 43202 states and 276545 transitions. Word has length 26 [2021-10-08 16:47:57,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:47:57,836 INFO L470 AbstractCegarLoop]: Abstraction has 43202 states and 276545 transitions. [2021-10-08 16:47:57,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 15 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) [2021-10-08 16:47:57,836 INFO L276 IsEmpty]: Start isEmpty. Operand 43202 states and 276545 transitions. [2021-10-08 16:47:58,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:47:58,057 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:47:58,057 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:47:58,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Forceful destruction successful, exit code 0 [2021-10-08 16:47:58,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:47:58,258 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:47:58,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:47:58,259 INFO L82 PathProgramCache]: Analyzing trace with hash 9216732, now seen corresponding path program 29 times [2021-10-08 16:47:58,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:47:58,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633841982] [2021-10-08 16:47:58,259 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:47:58,260 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:47:58,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:47:58,261 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:47:58,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Waiting until timeout for monitored process [2021-10-08 16:47:59,767 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 16:47:59,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:47:59,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 16:47:59,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:48:00,091 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:48:00,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:48:01,430 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:48:01,430 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:48:01,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633841982] [2021-10-08 16:48:01,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633841982] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:48:01,431 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:48:01,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-08 16:48:01,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552039819] [2021-10-08 16:48:01,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 16:48:01,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:48:01,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 16:48:01,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:48:01,432 INFO L87 Difference]: Start difference. First operand 43202 states and 276545 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-08 16:48:10,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:48:10,884 INFO L93 Difference]: Finished difference Result 57456 states and 352463 transitions. [2021-10-08 16:48:10,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-08 16:48:10,884 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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 26 [2021-10-08 16:48:10,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:48:11,324 INFO L225 Difference]: With dead ends: 57456 [2021-10-08 16:48:11,325 INFO L226 Difference]: Without dead ends: 57432 [2021-10-08 16:48:11,325 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 2742.6ms TimeCoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 16:48:11,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57432 states. [2021-10-08 16:48:13,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57432 to 46150. [2021-10-08 16:48:13,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46150 states, 46149 states have (on average 6.442631476305012) internal successors, (297321), 46149 states have internal predecessors, (297321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:48:14,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46150 states to 46150 states and 297321 transitions. [2021-10-08 16:48:14,307 INFO L78 Accepts]: Start accepts. Automaton has 46150 states and 297321 transitions. Word has length 26 [2021-10-08 16:48:14,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:48:14,307 INFO L470 AbstractCegarLoop]: Abstraction has 46150 states and 297321 transitions. [2021-10-08 16:48:14,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2021-10-08 16:48:14,307 INFO L276 IsEmpty]: Start isEmpty. Operand 46150 states and 297321 transitions. [2021-10-08 16:48:14,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:48:14,582 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:48:14,582 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:48:14,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Forceful destruction successful, exit code 0 [2021-10-08 16:48:14,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:48:14,788 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:48:14,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:48:14,788 INFO L82 PathProgramCache]: Analyzing trace with hash -284870180, now seen corresponding path program 30 times [2021-10-08 16:48:14,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:48:14,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [118195182] [2021-10-08 16:48:14,789 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:48:14,790 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:48:14,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:48:14,793 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:48:14,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Waiting until timeout for monitored process Received shutdown request... [2021-10-08 16:48:15,446 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 16:48:15,474 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 16:48:16,573 ERROR L247 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2021-10-08 16:48:16,574 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 16:48:16,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Forceful destruction successful, exit code 0 [2021-10-08 16:48:16,675 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-08 16:48:16,687 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 137 [2021-10-08 16:48:16,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:48:16,776 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 27 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [118195182] and IpTcStrategyModuleCvc4 [2081390661]. [2021-10-08 16:48:16,779 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-08 16:48:16,779 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-08 16:48:16,780 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-08 16:48:16,780 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-08 16:48:16,780 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-08 16:48:16,780 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-08 16:48:16,780 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-08 16:48:16,780 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-08 16:48:16,780 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-08 16:48:16,781 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-08 16:48:16,781 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-08 16:48:16,781 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-08 16:48:16,781 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-08 16:48:16,781 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-08 16:48:16,781 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-08 16:48:16,781 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-08 16:48:16,782 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 16:48:16,782 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 16:48:16,782 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 16:48:16,782 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-08 16:48:16,782 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-08 16:48:16,788 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 16:48:16,788 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 16:48:16,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 04:48:16 BasicIcfg [2021-10-08 16:48:16,790 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 16:48:16,791 INFO L168 Benchmark]: Toolchain (without parser) took 776656.65 ms. Allocated memory was 151.0 MB in the beginning and 6.6 GB in the end (delta: 6.4 GB). Free memory was 123.7 MB in the beginning and 658.5 MB in the end (delta: -534.8 MB). Peak memory consumption was 5.9 GB. Max. memory is 8.0 GB. [2021-10-08 16:48:16,791 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory is still 134.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 16:48:16,792 INFO L168 Benchmark]: CACSL2BoogieTranslator took 420.37 ms. Allocated memory is still 151.0 MB. Free memory was 123.3 MB in the beginning and 112.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-08 16:48:16,792 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.92 ms. Allocated memory is still 151.0 MB. Free memory was 112.3 MB in the beginning and 110.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-08 16:48:16,792 INFO L168 Benchmark]: Boogie Preprocessor took 66.89 ms. Allocated memory is still 151.0 MB. Free memory was 110.6 MB in the beginning and 109.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 16:48:16,793 INFO L168 Benchmark]: RCFGBuilder took 678.30 ms. Allocated memory is still 151.0 MB. Free memory was 109.1 MB in the beginning and 122.1 MB in the end (delta: -12.9 MB). Peak memory consumption was 9.5 MB. Max. memory is 8.0 GB. [2021-10-08 16:48:16,793 INFO L168 Benchmark]: TraceAbstraction took 775368.21 ms. Allocated memory was 151.0 MB in the beginning and 6.6 GB in the end (delta: 6.4 GB). Free memory was 121.8 MB in the beginning and 658.5 MB in the end (delta: -536.7 MB). Peak memory consumption was 5.9 GB. Max. memory is 8.0 GB. [2021-10-08 16:48:16,795 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory is still 134.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 420.37 ms. Allocated memory is still 151.0 MB. Free memory was 123.3 MB in the beginning and 112.4 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 80.92 ms. Allocated memory is still 151.0 MB. Free memory was 112.3 MB in the beginning and 110.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 66.89 ms. Allocated memory is still 151.0 MB. Free memory was 110.6 MB in the beginning and 109.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 678.30 ms. Allocated memory is still 151.0 MB. Free memory was 109.1 MB in the beginning and 122.1 MB in the end (delta: -12.9 MB). Peak memory consumption was 9.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 775368.21 ms. Allocated memory was 151.0 MB in the beginning and 6.6 GB in the end (delta: 6.4 GB). Free memory was 121.8 MB in the beginning and 658.5 MB in the end (delta: -536.7 MB). Peak memory consumption was 5.9 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 19006.1ms, 140 PlacesBefore, 56 PlacesAfterwards, 137 TransitionsBefore, 47 TransitionsAfterwards, 1608 CoEnabledTransitionPairs, 8 FixpointIterations, 67 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 8 ConcurrentYvCompositions, 6 ChoiceCompositions, 131 TotalNumberOfCompositions, 2240 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2240, positive: 2240, positive conditional: 0, positive unconditional: 2240, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1022, positive: 1022, positive conditional: 0, positive unconditional: 1022, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1022, positive: 1022, positive conditional: 0, positive unconditional: 1022, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2240, positive: 1218, positive conditional: 0, positive unconditional: 1218, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1022, unknown conditional: 0, unknown unconditional: 1022] , Statistics on independence cache: Total cache size (in pairs): 116, Positive cache size: 116, Positive conditional cache size: 0, Positive unconditional cache size: 116, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 27 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [118195182] and IpTcStrategyModuleCvc4 [2081390661]. - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 27 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [118195182] and IpTcStrategyModuleCvc4 [2081390661]. - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 27 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [118195182] and IpTcStrategyModuleCvc4 [2081390661]. - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 27 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [118195182] and IpTcStrategyModuleCvc4 [2081390661]. - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 27 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [118195182] and IpTcStrategyModuleCvc4 [2081390661]. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 27 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [118195182] and IpTcStrategyModuleCvc4 [2081390661]. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 27 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [118195182] and IpTcStrategyModuleCvc4 [2081390661]. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 27 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [118195182] and IpTcStrategyModuleCvc4 [2081390661]. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 27 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [118195182] and IpTcStrategyModuleCvc4 [2081390661]. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 27 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [118195182] and IpTcStrategyModuleCvc4 [2081390661]. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 27 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [118195182] and IpTcStrategyModuleCvc4 [2081390661]. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 27 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [118195182] and IpTcStrategyModuleCvc4 [2081390661]. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 27 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [118195182] and IpTcStrategyModuleCvc4 [2081390661]. - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 27 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [118195182] and IpTcStrategyModuleCvc4 [2081390661]. - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 27 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [118195182] and IpTcStrategyModuleCvc4 [2081390661]. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 27 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [118195182] and IpTcStrategyModuleCvc4 [2081390661]. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 27 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [118195182] and IpTcStrategyModuleCvc4 [2081390661]. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 27 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [118195182] and IpTcStrategyModuleCvc4 [2081390661]. - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 27 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [118195182] and IpTcStrategyModuleCvc4 [2081390661]. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 27 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [118195182] and IpTcStrategyModuleCvc4 [2081390661]. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 27 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [118195182] and IpTcStrategyModuleCvc4 [2081390661]. - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 27 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [118195182] and IpTcStrategyModuleCvc4 [2081390661]. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 152 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 775199.4ms, OverallIterations: 94, TraceHistogramMax: 4, EmptinessCheckTime: 6477.8ms, AutomataDifference: 476744.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 19136.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6417 SDtfs, 20376 SDslu, 36001 SDs, 0 SdLazy, 33962 SolverSat, 1640 SolverUnsat, 76 SolverUnknown, 0 SolverNotchecked, 304276.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4692 GetRequests, 3189 SyntacticMatches, 0 SemanticMatches, 1503 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5297 ImplicationChecksByTransitivity, 175176.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=46150occurred in iteration=93, InterpolantAutomatonStates: 1454, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 68030.1ms AutomataMinimizationTime, 93 MinimizatonAttempts, 408998 StatesRemovedByMinimization, 83 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 815.8ms SsaConstructionTime, 14791.0ms SatisfiabilityAnalysisTime, 106053.4ms InterpolantComputationTime, 2124 NumberOfCodeBlocks, 2124 NumberOfCodeBlocksAsserted, 177 NumberOfCheckSat, 4062 ConstructedInterpolants, 580 QuantifiedInterpolants, 45162 SizeOfPredicates, 432 NumberOfNonLiveVariables, 10373 ConjunctsInSsa, 887 ConjunctsInUnsatCore, 186 InterpolantComputations, 24 PerfectInterpolantSequences, 140/918 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown