/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/popl20/mult-equiv.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 21:27:59,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 21:27:59,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 21:27:59,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 21:27:59,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-06 21:27:59,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-06 21:27:59,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-06 21:27:59,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-06 21:27:59,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-06 21:27:59,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-06 21:27:59,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-06 21:27:59,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-06 21:27:59,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-06 21:27:59,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-06 21:27:59,610 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-06 21:27:59,611 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-06 21:27:59,615 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-06 21:27:59,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-06 21:27:59,619 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-06 21:27:59,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-06 21:27:59,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-06 21:27:59,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-06 21:27:59,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-06 21:27:59,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-06 21:27:59,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-06 21:27:59,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 21:27:59,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 21:27:59,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 21:27:59,628 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-06 21:27:59,664 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 21:27:59,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 21:27:59,664 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 21:27:59,665 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 21:27:59,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 21:27:59,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 21:27:59,667 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 21:27:59,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 21:27:59,667 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 21:27:59,667 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 21:27:59,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 21:27:59,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 21:27:59,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 21:27:59,668 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 21:27:59,669 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 21:27:59,669 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 21:27:59,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 21:27:59,669 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 21:27:59,669 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 21:27:59,669 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 21:27:59,670 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 21:27:59,670 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 21:27:59,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 21:27:59,670 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 21:27:59,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 21:27:59,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:27:59,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 21:27:59,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 21:27:59,671 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 21:27:59,672 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 21:27:59,672 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 21:27:59,672 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 21:27:59,672 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 21:28:00,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 21:28:00,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 21:28:00,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 21:28:00,072 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 21:28:00,073 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 21:28:00,074 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20/mult-equiv.wvr.c [2021-10-06 21:28:00,170 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e8a0f8b50/f53a1322107d47bda6fe369d75e3c6a7/FLAG05cf470f5 [2021-10-06 21:28:00,851 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 21:28:00,852 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20/mult-equiv.wvr.c [2021-10-06 21:28:00,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e8a0f8b50/f53a1322107d47bda6fe369d75e3c6a7/FLAG05cf470f5 [2021-10-06 21:28:01,166 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e8a0f8b50/f53a1322107d47bda6fe369d75e3c6a7 [2021-10-06 21:28:01,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 21:28:01,179 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 21:28:01,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 21:28:01,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 21:28:01,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 21:28:01,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:28:01" (1/1) ... [2021-10-06 21:28:01,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f048d09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:01, skipping insertion in model container [2021-10-06 21:28:01,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:28:01" (1/1) ... [2021-10-06 21:28:01,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 21:28:01,228 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 21:28:01,512 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20/mult-equiv.wvr.c[2201,2214] [2021-10-06 21:28:01,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:28:01,530 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 21:28:01,554 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20/mult-equiv.wvr.c[2201,2214] [2021-10-06 21:28:01,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:28:01,574 INFO L208 MainTranslator]: Completed translation [2021-10-06 21:28:01,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:01 WrapperNode [2021-10-06 21:28:01,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 21:28:01,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 21:28:01,576 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 21:28:01,576 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 21:28:01,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:01" (1/1) ... [2021-10-06 21:28:01,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:01" (1/1) ... [2021-10-06 21:28:01,618 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 21:28:01,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 21:28:01,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 21:28:01,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 21:28:01,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:01" (1/1) ... [2021-10-06 21:28:01,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:01" (1/1) ... [2021-10-06 21:28:01,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:01" (1/1) ... [2021-10-06 21:28:01,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:01" (1/1) ... [2021-10-06 21:28:01,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:01" (1/1) ... [2021-10-06 21:28:01,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:01" (1/1) ... [2021-10-06 21:28:01,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:01" (1/1) ... [2021-10-06 21:28:01,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 21:28:01,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 21:28:01,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 21:28:01,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 21:28:01,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:01" (1/1) ... [2021-10-06 21:28:01,666 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:28:01,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 21:28:01,701 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-06 21:28:01,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-06 21:28:01,781 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 21:28:01,781 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 21:28:01,781 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 21:28:01,781 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 21:28:01,781 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-06 21:28:01,782 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-06 21:28:01,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 21:28:01,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 21:28:01,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-06 21:28:01,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-06 21:28:01,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 21:28:01,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 21:28:01,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 21:28:01,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 21:28:01,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 21:28:01,786 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 21:28:02,371 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 21:28:02,371 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-06 21:28:02,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:28:02 BoogieIcfgContainer [2021-10-06 21:28:02,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 21:28:02,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 21:28:02,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 21:28:02,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 21:28:02,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 09:28:01" (1/3) ... [2021-10-06 21:28:02,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e600e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:28:02, skipping insertion in model container [2021-10-06 21:28:02,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:01" (2/3) ... [2021-10-06 21:28:02,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e600e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:28:02, skipping insertion in model container [2021-10-06 21:28:02,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:28:02" (3/3) ... [2021-10-06 21:28:02,395 INFO L111 eAbstractionObserver]: Analyzing ICFG mult-equiv.wvr.c [2021-10-06 21:28:02,401 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 21:28:02,402 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-10-06 21:28:02,402 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 21:28:02,436 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:02,436 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:02,437 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:02,437 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:02,438 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:02,438 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:02,442 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:02,442 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:02,443 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:02,446 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:02,446 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:02,446 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:02,449 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:02,449 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:02,458 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-06 21:28:02,509 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 21:28:02,517 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-06 21:28:02,517 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-10-06 21:28:02,538 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 21:28:02,552 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 97 transitions, 218 flow [2021-10-06 21:28:02,556 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 97 transitions, 218 flow [2021-10-06 21:28:02,558 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 97 transitions, 218 flow [2021-10-06 21:28:02,628 INFO L129 PetriNetUnfolder]: 7/94 cut-off events. [2021-10-06 21:28:02,628 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-06 21:28:02,636 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 94 events. 7/94 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2021-10-06 21:28:02,640 INFO L116 LiptonReduction]: Number of co-enabled transitions 690 [2021-10-06 21:28:10,982 INFO L131 LiptonReduction]: Checked pairs total: 1421 [2021-10-06 21:28:10,982 INFO L133 LiptonReduction]: Total number of compositions: 91 [2021-10-06 21:28:10,992 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 38 transitions, 100 flow [2021-10-06 21:28:11,016 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 159 states, 145 states have (on average 3.4275862068965517) internal successors, (497), 158 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:11,019 INFO L276 IsEmpty]: Start isEmpty. Operand has 159 states, 145 states have (on average 3.4275862068965517) internal successors, (497), 158 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:11,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-06 21:28:11,025 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:11,025 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-06 21:28:11,026 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:11,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:11,031 INFO L82 PathProgramCache]: Analyzing trace with hash 391, now seen corresponding path program 1 times [2021-10-06 21:28:11,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:11,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876089545] [2021-10-06 21:28:11,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:28:11,046 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:11,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:11,051 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:11,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-06 21:28:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:28:11,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-06 21:28:11,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:11,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:11,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:11,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:11,130 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:11,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1876089545] [2021-10-06 21:28:11,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1876089545] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:28:11,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:28:11,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-06 21:28:11,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943468080] [2021-10-06 21:28:11,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-06 21:28:11,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:11,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-06 21:28:11,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 21:28:11,160 INFO L87 Difference]: Start difference. First operand has 159 states, 145 states have (on average 3.4275862068965517) internal successors, (497), 158 states have internal predecessors, (497), 0 states have call successors, (0), 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) [2021-10-06 21:28:11,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:11,183 INFO L93 Difference]: Finished difference Result 156 states and 494 transitions. [2021-10-06 21:28:11,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-06 21:28:11,185 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 [2021-10-06 21:28:11,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:11,199 INFO L225 Difference]: With dead ends: 156 [2021-10-06 21:28:11,200 INFO L226 Difference]: Without dead ends: 156 [2021-10-06 21:28:11,201 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 [2021-10-06 21:28:11,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-06 21:28:11,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2021-10-06 21:28:11,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 145 states have (on average 3.406896551724138) internal successors, (494), 155 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:11,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 494 transitions. [2021-10-06 21:28:11,259 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 494 transitions. Word has length 1 [2021-10-06 21:28:11,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:11,260 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 494 transitions. [2021-10-06 21:28:11,260 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) [2021-10-06 21:28:11,260 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 494 transitions. [2021-10-06 21:28:11,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:28:11,261 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:11,261 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:28:11,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:11,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:11,467 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:11,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:11,470 INFO L82 PathProgramCache]: Analyzing trace with hash 386204, now seen corresponding path program 1 times [2021-10-06 21:28:11,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:11,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489571109] [2021-10-06 21:28:11,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:28:11,471 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:11,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:11,472 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:11,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-06 21:28:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:28:11,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:28:11,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:11,848 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-06 21:28:11,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 64 [2021-10-06 21:28:11,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 64 [2021-10-06 21:28:12,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:12,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:12,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:12,205 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:12,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489571109] [2021-10-06 21:28:12,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489571109] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:28:12,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:28:12,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:28:12,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706806519] [2021-10-06 21:28:12,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:28:12,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:12,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:28:12,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:28:12,210 INFO L87 Difference]: Start difference. First operand 156 states and 494 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:12,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:12,290 INFO L93 Difference]: Finished difference Result 147 states and 470 transitions. [2021-10-06 21:28:12,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:28:12,291 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 [2021-10-06 21:28:12,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:12,295 INFO L225 Difference]: With dead ends: 147 [2021-10-06 21:28:12,295 INFO L226 Difference]: Without dead ends: 147 [2021-10-06 21:28:12,296 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:28:12,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-10-06 21:28:12,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2021-10-06 21:28:12,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 138 states have (on average 3.4057971014492754) internal successors, (470), 146 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:12,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 470 transitions. [2021-10-06 21:28:12,315 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 470 transitions. Word has length 3 [2021-10-06 21:28:12,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:12,316 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 470 transitions. [2021-10-06 21:28:12,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:12,317 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 470 transitions. [2021-10-06 21:28:12,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:28:12,317 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:12,317 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:28:12,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:12,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:12,529 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:12,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:12,531 INFO L82 PathProgramCache]: Analyzing trace with hash 386206, now seen corresponding path program 1 times [2021-10-06 21:28:12,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:12,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1109983467] [2021-10-06 21:28:12,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:28:12,533 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:12,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:12,535 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:12,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-06 21:28:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:28:12,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:28:12,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:12,668 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-06 21:28:12,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 37 [2021-10-06 21:28:12,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:12,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:12,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:12,830 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:12,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1109983467] [2021-10-06 21:28:12,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1109983467] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:28:12,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:28:12,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:28:12,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133970368] [2021-10-06 21:28:12,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:28:12,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:12,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:28:12,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:28:12,834 INFO L87 Difference]: Start difference. First operand 147 states and 470 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:12,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:12,879 INFO L93 Difference]: Finished difference Result 138 states and 446 transitions. [2021-10-06 21:28:12,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:28:12,880 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 [2021-10-06 21:28:12,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:12,883 INFO L225 Difference]: With dead ends: 138 [2021-10-06 21:28:12,883 INFO L226 Difference]: Without dead ends: 138 [2021-10-06 21:28:12,884 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:28:12,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-06 21:28:12,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-10-06 21:28:12,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 131 states have (on average 3.404580152671756) internal successors, (446), 137 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:12,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 446 transitions. [2021-10-06 21:28:12,898 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 446 transitions. Word has length 3 [2021-10-06 21:28:12,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:12,899 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 446 transitions. [2021-10-06 21:28:12,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:12,899 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 446 transitions. [2021-10-06 21:28:12,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:28:12,900 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:12,900 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:28:12,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-06 21:28:13,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:13,113 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:13,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:13,115 INFO L82 PathProgramCache]: Analyzing trace with hash 371151657, now seen corresponding path program 1 times [2021-10-06 21:28:13,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:13,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [434936817] [2021-10-06 21:28:13,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:28:13,117 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:13,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:13,118 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:13,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-06 21:28:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:28:13,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:28:13,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:13,349 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-06 21:28:13,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 49 [2021-10-06 21:28:13,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:13,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:13,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:13,551 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:13,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [434936817] [2021-10-06 21:28:13,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [434936817] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:28:13,552 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:28:13,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:28:13,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302897838] [2021-10-06 21:28:13,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:28:13,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:13,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:28:13,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:28:13,554 INFO L87 Difference]: Start difference. First operand 138 states and 446 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:13,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:13,593 INFO L93 Difference]: Finished difference Result 127 states and 415 transitions. [2021-10-06 21:28:13,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:28:13,594 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 [2021-10-06 21:28:13,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:13,597 INFO L225 Difference]: With dead ends: 127 [2021-10-06 21:28:13,597 INFO L226 Difference]: Without dead ends: 127 [2021-10-06 21:28:13,597 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:28:13,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-06 21:28:13,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-10-06 21:28:13,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 122 states have (on average 3.401639344262295) internal successors, (415), 126 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:13,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 415 transitions. [2021-10-06 21:28:13,609 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 415 transitions. Word has length 5 [2021-10-06 21:28:13,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:13,609 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 415 transitions. [2021-10-06 21:28:13,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:13,610 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 415 transitions. [2021-10-06 21:28:13,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:28:13,611 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:13,611 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:28:13,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:13,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:13,823 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:13,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:13,824 INFO L82 PathProgramCache]: Analyzing trace with hash 371151658, now seen corresponding path program 1 times [2021-10-06 21:28:13,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:13,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [278060004] [2021-10-06 21:28:13,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:28:13,826 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:13,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:13,828 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:13,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-06 21:28:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:28:13,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:28:13,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:13,909 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-06 21:28:13,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-06 21:28:13,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:13,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:13,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:13,970 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:13,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [278060004] [2021-10-06 21:28:13,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [278060004] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:28:13,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:28:13,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:28:13,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063700971] [2021-10-06 21:28:13,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:28:13,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:13,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:28:13,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:28:13,973 INFO L87 Difference]: Start difference. First operand 127 states and 415 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) [2021-10-06 21:28:13,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:13,998 INFO L93 Difference]: Finished difference Result 116 states and 384 transitions. [2021-10-06 21:28:13,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:28:13,999 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 [2021-10-06 21:28:13,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:14,001 INFO L225 Difference]: With dead ends: 116 [2021-10-06 21:28:14,002 INFO L226 Difference]: Without dead ends: 116 [2021-10-06 21:28:14,002 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:28:14,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-06 21:28:14,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-10-06 21:28:14,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 113 states have (on average 3.398230088495575) internal successors, (384), 115 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:14,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 384 transitions. [2021-10-06 21:28:14,011 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 384 transitions. Word has length 5 [2021-10-06 21:28:14,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:14,012 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 384 transitions. [2021-10-06 21:28:14,012 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) [2021-10-06 21:28:14,012 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 384 transitions. [2021-10-06 21:28:14,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 21:28:14,013 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:14,013 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:14,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:14,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:14,227 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:14,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:14,229 INFO L82 PathProgramCache]: Analyzing trace with hash 194467308, now seen corresponding path program 1 times [2021-10-06 21:28:14,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:14,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [85103588] [2021-10-06 21:28:14,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:28:14,230 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:14,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:14,232 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:14,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-06 21:28:14,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:28:14,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:28:14,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:14,494 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-06 21:28:14,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 59 [2021-10-06 21:28:14,504 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 60 treesize of output 58 [2021-10-06 21:28:14,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:14,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:14,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:14,816 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:14,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [85103588] [2021-10-06 21:28:14,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [85103588] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:28:14,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:28:14,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:28:14,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473890673] [2021-10-06 21:28:14,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:28:14,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:14,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:28:14,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:28:14,819 INFO L87 Difference]: Start difference. First operand 116 states and 384 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:14,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:14,853 INFO L93 Difference]: Finished difference Result 98 states and 312 transitions. [2021-10-06 21:28:14,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:28:14,855 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 [2021-10-06 21:28:14,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:14,857 INFO L225 Difference]: With dead ends: 98 [2021-10-06 21:28:14,857 INFO L226 Difference]: Without dead ends: 98 [2021-10-06 21:28:14,857 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:28:14,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-06 21:28:14,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-10-06 21:28:14,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 96 states have (on average 3.25) internal successors, (312), 97 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:14,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 312 transitions. [2021-10-06 21:28:14,864 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 312 transitions. Word has length 7 [2021-10-06 21:28:14,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:14,865 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 312 transitions. [2021-10-06 21:28:14,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:14,865 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 312 transitions. [2021-10-06 21:28:14,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 21:28:14,866 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:14,866 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:14,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:15,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:15,079 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:15,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:15,081 INFO L82 PathProgramCache]: Analyzing trace with hash 194467309, now seen corresponding path program 1 times [2021-10-06 21:28:15,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:15,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241237290] [2021-10-06 21:28:15,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:28:15,082 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:15,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:15,084 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:15,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-06 21:28:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:28:15,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:28:15,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:15,210 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-06 21:28:15,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-06 21:28:15,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:15,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:15,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:15,323 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:15,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241237290] [2021-10-06 21:28:15,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1241237290] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:28:15,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:28:15,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-06 21:28:15,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732585602] [2021-10-06 21:28:15,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 21:28:15,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:15,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 21:28:15,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:28:15,325 INFO L87 Difference]: Start difference. First operand 98 states and 312 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:15,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:15,357 INFO L93 Difference]: Finished difference Result 80 states and 240 transitions. [2021-10-06 21:28:15,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:28:15,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-06 21:28:15,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:15,359 INFO L225 Difference]: With dead ends: 80 [2021-10-06 21:28:15,359 INFO L226 Difference]: Without dead ends: 80 [2021-10-06 21:28:15,359 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.1ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:28:15,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-06 21:28:15,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-10-06 21:28:15,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 3.037974683544304) internal successors, (240), 79 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:15,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 240 transitions. [2021-10-06 21:28:15,364 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 240 transitions. Word has length 7 [2021-10-06 21:28:15,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:15,365 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 240 transitions. [2021-10-06 21:28:15,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:15,365 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 240 transitions. [2021-10-06 21:28:15,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:28:15,367 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:15,367 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:15,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:15,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:15,579 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:15,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:15,580 INFO L82 PathProgramCache]: Analyzing trace with hash -2142096869, now seen corresponding path program 1 times [2021-10-06 21:28:15,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:15,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753098936] [2021-10-06 21:28:15,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:28:15,582 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:15,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:15,583 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:15,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-06 21:28:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:28:15,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 21:28:15,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:15,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:15,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:15,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:15,819 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:15,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753098936] [2021-10-06 21:28:15,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753098936] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:28:15,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:28:15,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:28:15,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822283219] [2021-10-06 21:28:15,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:28:15,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:15,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:28:15,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:28:15,822 INFO L87 Difference]: Start difference. First operand 80 states and 240 transitions. Second operand has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:15,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:15,845 INFO L93 Difference]: Finished difference Result 157 states and 477 transitions. [2021-10-06 21:28:15,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:28:15,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:28:15,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:15,848 INFO L225 Difference]: With dead ends: 157 [2021-10-06 21:28:15,848 INFO L226 Difference]: Without dead ends: 150 [2021-10-06 21:28:15,849 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:28:15,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-06 21:28:15,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 114. [2021-10-06 21:28:15,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 3.0353982300884956) internal successors, (343), 113 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:15,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 343 transitions. [2021-10-06 21:28:15,857 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 343 transitions. Word has length 16 [2021-10-06 21:28:15,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:15,858 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 343 transitions. [2021-10-06 21:28:15,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:15,858 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 343 transitions. [2021-10-06 21:28:15,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:28:15,864 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:15,865 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:15,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:16,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:16,080 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:16,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:16,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1533038094, now seen corresponding path program 1 times [2021-10-06 21:28:16,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:16,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842219265] [2021-10-06 21:28:16,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:28:16,083 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:16,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:16,084 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:16,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-06 21:28:16,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:28:16,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:28:16,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:16,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:16,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:16,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:16,309 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:16,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842219265] [2021-10-06 21:28:16,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842219265] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:28:16,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:28:16,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-06 21:28:16,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253101280] [2021-10-06 21:28:16,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 21:28:16,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:16,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 21:28:16,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:28:16,312 INFO L87 Difference]: Start difference. First operand 114 states and 343 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:16,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:16,422 INFO L93 Difference]: Finished difference Result 222 states and 614 transitions. [2021-10-06 21:28:16,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:28:16,423 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:28:16,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:16,425 INFO L225 Difference]: With dead ends: 222 [2021-10-06 21:28:16,426 INFO L226 Difference]: Without dead ends: 198 [2021-10-06 21:28:16,426 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.8ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:28:16,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-10-06 21:28:16,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 168. [2021-10-06 21:28:16,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 2.9820359281437128) internal successors, (498), 167 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:16,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 498 transitions. [2021-10-06 21:28:16,436 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 498 transitions. Word has length 17 [2021-10-06 21:28:16,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:16,436 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 498 transitions. [2021-10-06 21:28:16,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:16,437 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 498 transitions. [2021-10-06 21:28:16,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:28:16,438 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:16,439 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:16,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:16,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:16,651 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:16,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:16,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1471839474, now seen corresponding path program 2 times [2021-10-06 21:28:16,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:16,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1702664289] [2021-10-06 21:28:16,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:28:16,653 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:16,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:16,654 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:16,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-06 21:28:16,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:28:16,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:16,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:28:16,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:16,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:16,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:16,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:16,946 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:16,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1702664289] [2021-10-06 21:28:16,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1702664289] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:28:16,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:28:16,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 6 [2021-10-06 21:28:16,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661872241] [2021-10-06 21:28:16,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:28:16,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:16,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:28:16,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:28:16,949 INFO L87 Difference]: Start difference. First operand 168 states and 498 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:17,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:17,095 INFO L93 Difference]: Finished difference Result 176 states and 510 transitions. [2021-10-06 21:28:17,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 21:28:17,096 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:28:17,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:17,098 INFO L225 Difference]: With dead ends: 176 [2021-10-06 21:28:17,098 INFO L226 Difference]: Without dead ends: 176 [2021-10-06 21:28:17,099 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 43.2ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-06 21:28:17,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-10-06 21:28:17,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 122. [2021-10-06 21:28:17,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 3.090909090909091) internal successors, (374), 121 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:17,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 374 transitions. [2021-10-06 21:28:17,106 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 374 transitions. Word has length 17 [2021-10-06 21:28:17,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:17,106 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 374 transitions. [2021-10-06 21:28:17,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:17,106 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 374 transitions. [2021-10-06 21:28:17,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:28:17,108 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:17,108 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:17,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:17,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:17,320 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:17,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:17,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1531219281, now seen corresponding path program 1 times [2021-10-06 21:28:17,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:17,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973034381] [2021-10-06 21:28:17,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:28:17,323 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:17,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:17,324 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:17,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-06 21:28:17,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:28:17,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:28:17,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:17,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:17,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:17,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:17,544 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:17,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973034381] [2021-10-06 21:28:17,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1973034381] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:28:17,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:28:17,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2021-10-06 21:28:17,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973952313] [2021-10-06 21:28:17,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:28:17,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:17,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:28:17,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:28:17,546 INFO L87 Difference]: Start difference. First operand 122 states and 374 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:17,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:17,606 INFO L93 Difference]: Finished difference Result 196 states and 567 transitions. [2021-10-06 21:28:17,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:28:17,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 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 18 [2021-10-06 21:28:17,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:17,609 INFO L225 Difference]: With dead ends: 196 [2021-10-06 21:28:17,609 INFO L226 Difference]: Without dead ends: 196 [2021-10-06 21:28:17,610 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:28:17,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-10-06 21:28:17,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 140. [2021-10-06 21:28:17,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 3.194244604316547) internal successors, (444), 139 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:17,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 444 transitions. [2021-10-06 21:28:17,618 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 444 transitions. Word has length 18 [2021-10-06 21:28:17,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:17,619 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 444 transitions. [2021-10-06 21:28:17,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:17,619 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 444 transitions. [2021-10-06 21:28:17,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:28:17,620 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:17,621 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:17,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:17,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:17,834 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:17,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:17,835 INFO L82 PathProgramCache]: Analyzing trace with hash 670612860, now seen corresponding path program 1 times [2021-10-06 21:28:17,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:17,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693323345] [2021-10-06 21:28:17,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:28:17,837 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:17,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:17,838 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:17,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-06 21:28:17,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:28:17,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:28:17,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:18,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:18,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:18,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:18,289 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:18,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693323345] [2021-10-06 21:28:18,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [693323345] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:18,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:18,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2021-10-06 21:28:18,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952027858] [2021-10-06 21:28:18,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:28:18,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:18,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:28:18,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:28:18,294 INFO L87 Difference]: Start difference. First operand 140 states and 444 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:18,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:18,440 INFO L93 Difference]: Finished difference Result 367 states and 1169 transitions. [2021-10-06 21:28:18,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-06 21:28:18,441 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:28:18,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:18,445 INFO L225 Difference]: With dead ends: 367 [2021-10-06 21:28:18,445 INFO L226 Difference]: Without dead ends: 360 [2021-10-06 21:28:18,446 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 46.1ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:28:18,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-10-06 21:28:18,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 212. [2021-10-06 21:28:18,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 3.3270142180094786) internal successors, (702), 211 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:18,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 702 transitions. [2021-10-06 21:28:18,458 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 702 transitions. Word has length 19 [2021-10-06 21:28:18,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:18,459 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 702 transitions. [2021-10-06 21:28:18,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:18,459 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 702 transitions. [2021-10-06 21:28:18,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:28:18,460 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:18,460 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:18,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:18,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:18,673 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:18,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:18,674 INFO L82 PathProgramCache]: Analyzing trace with hash -176842832, now seen corresponding path program 2 times [2021-10-06 21:28:18,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:18,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342803693] [2021-10-06 21:28:18,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:28:18,676 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:18,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:18,677 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:18,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-06 21:28:18,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:28:18,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:18,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:28:18,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:19,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:19,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:19,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:28:19,253 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:19,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342803693] [2021-10-06 21:28:19,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342803693] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:19,253 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:19,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2021-10-06 21:28:19,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921140003] [2021-10-06 21:28:19,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:28:19,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:19,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:28:19,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:28:19,255 INFO L87 Difference]: Start difference. First operand 212 states and 702 transitions. Second operand has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:19,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:19,592 INFO L93 Difference]: Finished difference Result 335 states and 1103 transitions. [2021-10-06 21:28:19,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:28:19,593 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:28:19,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:19,596 INFO L225 Difference]: With dead ends: 335 [2021-10-06 21:28:19,597 INFO L226 Difference]: Without dead ends: 316 [2021-10-06 21:28:19,597 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 121.7ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:28:19,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-10-06 21:28:19,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 262. [2021-10-06 21:28:19,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 3.4099616858237547) internal successors, (890), 261 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:19,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 890 transitions. [2021-10-06 21:28:19,610 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 890 transitions. Word has length 19 [2021-10-06 21:28:19,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:19,610 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 890 transitions. [2021-10-06 21:28:19,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:19,611 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 890 transitions. [2021-10-06 21:28:19,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:28:19,612 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:19,612 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:19,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-10-06 21:28:19,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:19,825 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:19,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:19,826 INFO L82 PathProgramCache]: Analyzing trace with hash 886680300, now seen corresponding path program 3 times [2021-10-06 21:28:19,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:19,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027022509] [2021-10-06 21:28:19,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:28:19,827 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:19,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:19,828 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:19,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-06 21:28:19,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:28:19,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:19,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:28:19,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:20,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:20,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:20,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:20,564 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:20,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027022509] [2021-10-06 21:28:20,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027022509] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:20,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:20,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-06 21:28:20,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340323535] [2021-10-06 21:28:20,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 21:28:20,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:20,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 21:28:20,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-06 21:28:20,566 INFO L87 Difference]: Start difference. First operand 262 states and 890 transitions. Second operand has 9 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:23,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:23,341 INFO L93 Difference]: Finished difference Result 598 states and 1867 transitions. [2021-10-06 21:28:23,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-06 21:28:23,342 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:28:23,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:23,347 INFO L225 Difference]: With dead ends: 598 [2021-10-06 21:28:23,347 INFO L226 Difference]: Without dead ends: 536 [2021-10-06 21:28:23,348 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 366.1ms TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:28:23,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-10-06 21:28:23,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 322. [2021-10-06 21:28:23,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 3.501557632398754) internal successors, (1124), 321 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:23,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 1124 transitions. [2021-10-06 21:28:23,365 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 1124 transitions. Word has length 19 [2021-10-06 21:28:23,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:23,365 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 1124 transitions. [2021-10-06 21:28:23,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:23,366 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 1124 transitions. [2021-10-06 21:28:23,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:28:23,367 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:23,368 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:23,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:23,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:23,581 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:23,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:23,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1224582250, now seen corresponding path program 1 times [2021-10-06 21:28:23,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:23,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1977055912] [2021-10-06 21:28:23,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:28:23,583 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:23,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:23,584 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:23,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-06 21:28:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:28:23,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:28:23,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:23,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:23,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:24,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:24,213 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:24,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1977055912] [2021-10-06 21:28:24,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1977055912] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:24,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:24,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 9 [2021-10-06 21:28:24,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97797637] [2021-10-06 21:28:24,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:28:24,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:24,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:28:24,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:28:24,215 INFO L87 Difference]: Start difference. First operand 322 states and 1124 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:25,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:25,070 INFO L93 Difference]: Finished difference Result 972 states and 3161 transitions. [2021-10-06 21:28:25,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-06 21:28:25,071 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:28:25,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:25,080 INFO L225 Difference]: With dead ends: 972 [2021-10-06 21:28:25,080 INFO L226 Difference]: Without dead ends: 972 [2021-10-06 21:28:25,083 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 527.5ms TimeCoverageRelationStatistics Valid=136, Invalid=244, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:28:25,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2021-10-06 21:28:25,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 452. [2021-10-06 21:28:25,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 451 states have (on average 3.4988913525498893) internal successors, (1578), 451 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:25,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 1578 transitions. [2021-10-06 21:28:25,112 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 1578 transitions. Word has length 19 [2021-10-06 21:28:25,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:25,113 INFO L470 AbstractCegarLoop]: Abstraction has 452 states and 1578 transitions. [2021-10-06 21:28:25,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:25,113 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 1578 transitions. [2021-10-06 21:28:25,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:28:25,115 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:25,115 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:25,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:25,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:25,329 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:25,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:25,329 INFO L82 PathProgramCache]: Analyzing trace with hash -637213876, now seen corresponding path program 2 times [2021-10-06 21:28:25,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:25,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504015928] [2021-10-06 21:28:25,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:28:25,330 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:25,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:25,331 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:25,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-06 21:28:25,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:28:25,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:25,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:28:25,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:25,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:25,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:26,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:26,124 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:26,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504015928] [2021-10-06 21:28:26,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504015928] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:26,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:26,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-06 21:28:26,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330118695] [2021-10-06 21:28:26,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:28:26,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:26,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:28:26,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:28:26,126 INFO L87 Difference]: Start difference. First operand 452 states and 1578 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 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) [2021-10-06 21:28:27,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:27,238 INFO L93 Difference]: Finished difference Result 1376 states and 4403 transitions. [2021-10-06 21:28:27,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-06 21:28:27,239 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 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 19 [2021-10-06 21:28:27,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:27,252 INFO L225 Difference]: With dead ends: 1376 [2021-10-06 21:28:27,252 INFO L226 Difference]: Without dead ends: 1376 [2021-10-06 21:28:27,253 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 682.5ms TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:28:27,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2021-10-06 21:28:27,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 608. [2021-10-06 21:28:27,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 607 states have (on average 3.640856672158155) internal successors, (2210), 607 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:27,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 2210 transitions. [2021-10-06 21:28:27,296 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 2210 transitions. Word has length 19 [2021-10-06 21:28:27,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:27,296 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 2210 transitions. [2021-10-06 21:28:27,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 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) [2021-10-06 21:28:27,297 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 2210 transitions. [2021-10-06 21:28:27,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:28:27,300 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:27,300 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:27,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:27,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:27,513 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:27,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:27,514 INFO L82 PathProgramCache]: Analyzing trace with hash -439870472, now seen corresponding path program 3 times [2021-10-06 21:28:27,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:27,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1368693700] [2021-10-06 21:28:27,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:28:27,515 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:27,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:27,517 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:27,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-06 21:28:27,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:28:27,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:27,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:28:27,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:27,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:27,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:28,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:28,297 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:28,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1368693700] [2021-10-06 21:28:28,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1368693700] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:28,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:28,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-06 21:28:28,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793513494] [2021-10-06 21:28:28,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:28:28,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:28,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:28:28,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:28:28,300 INFO L87 Difference]: Start difference. First operand 608 states and 2210 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 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) [2021-10-06 21:28:29,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:29,420 INFO L93 Difference]: Finished difference Result 1542 states and 4987 transitions. [2021-10-06 21:28:29,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-06 21:28:29,421 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 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 19 [2021-10-06 21:28:29,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:29,433 INFO L225 Difference]: With dead ends: 1542 [2021-10-06 21:28:29,433 INFO L226 Difference]: Without dead ends: 1542 [2021-10-06 21:28:29,433 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 797.0ms TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:28:29,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2021-10-06 21:28:29,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 738. [2021-10-06 21:28:29,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 737 states have (on average 3.6635006784260518) internal successors, (2700), 737 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:29,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 2700 transitions. [2021-10-06 21:28:29,477 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 2700 transitions. Word has length 19 [2021-10-06 21:28:29,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:29,477 INFO L470 AbstractCegarLoop]: Abstraction has 738 states and 2700 transitions. [2021-10-06 21:28:29,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 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) [2021-10-06 21:28:29,478 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 2700 transitions. [2021-10-06 21:28:29,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:28:29,481 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:29,481 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:29,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:29,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:29,693 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:29,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:29,694 INFO L82 PathProgramCache]: Analyzing trace with hash -238382415, now seen corresponding path program 4 times [2021-10-06 21:28:29,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:29,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753480411] [2021-10-06 21:28:29,696 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:28:29,696 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:29,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:29,697 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:29,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-06 21:28:29,848 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:28:29,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:29,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:28:29,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:29,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:29,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:30,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:30,309 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:30,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753480411] [2021-10-06 21:28:30,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753480411] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:30,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:30,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-06 21:28:30,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130933408] [2021-10-06 21:28:30,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:28:30,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:30,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:28:30,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:28:30,311 INFO L87 Difference]: Start difference. First operand 738 states and 2700 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 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) [2021-10-06 21:28:31,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:31,123 INFO L93 Difference]: Finished difference Result 1508 states and 4860 transitions. [2021-10-06 21:28:31,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-06 21:28:31,124 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 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 20 [2021-10-06 21:28:31,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:31,134 INFO L225 Difference]: With dead ends: 1508 [2021-10-06 21:28:31,134 INFO L226 Difference]: Without dead ends: 1372 [2021-10-06 21:28:31,135 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 510.4ms TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:28:31,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2021-10-06 21:28:31,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 982. [2021-10-06 21:28:31,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 981 states have (on average 3.6044852191641183) internal successors, (3536), 981 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:31,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 3536 transitions. [2021-10-06 21:28:31,192 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 3536 transitions. Word has length 20 [2021-10-06 21:28:31,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:31,193 INFO L470 AbstractCegarLoop]: Abstraction has 982 states and 3536 transitions. [2021-10-06 21:28:31,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 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) [2021-10-06 21:28:31,193 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 3536 transitions. [2021-10-06 21:28:31,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:28:31,197 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:31,197 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:31,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:31,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:31,411 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:31,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:31,412 INFO L82 PathProgramCache]: Analyzing trace with hash -598164325, now seen corresponding path program 5 times [2021-10-06 21:28:31,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:31,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [185793080] [2021-10-06 21:28:31,413 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:28:31,413 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:31,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:31,414 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:31,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-06 21:28:31,686 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:28:31,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:31,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:28:31,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:31,865 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:31,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:32,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:32,237 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:32,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [185793080] [2021-10-06 21:28:32,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [185793080] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:32,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:32,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2021-10-06 21:28:32,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45728598] [2021-10-06 21:28:32,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-06 21:28:32,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:32,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-06 21:28:32,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:28:32,240 INFO L87 Difference]: Start difference. First operand 982 states and 3536 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 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) [2021-10-06 21:28:33,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:33,104 INFO L93 Difference]: Finished difference Result 1982 states and 6478 transitions. [2021-10-06 21:28:33,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-06 21:28:33,106 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 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 20 [2021-10-06 21:28:33,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:33,122 INFO L225 Difference]: With dead ends: 1982 [2021-10-06 21:28:33,123 INFO L226 Difference]: Without dead ends: 1972 [2021-10-06 21:28:33,123 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 504.9ms TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:28:33,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2021-10-06 21:28:33,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 1254. [2021-10-06 21:28:33,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 1253 states have (on average 3.6264964086193134) internal successors, (4544), 1253 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:33,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 4544 transitions. [2021-10-06 21:28:33,189 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 4544 transitions. Word has length 20 [2021-10-06 21:28:33,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:33,190 INFO L470 AbstractCegarLoop]: Abstraction has 1254 states and 4544 transitions. [2021-10-06 21:28:33,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 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) [2021-10-06 21:28:33,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 4544 transitions. [2021-10-06 21:28:33,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:28:33,195 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:33,195 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:33,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-10-06 21:28:33,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:33,408 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:33,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:33,409 INFO L82 PathProgramCache]: Analyzing trace with hash -827150511, now seen corresponding path program 6 times [2021-10-06 21:28:33,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:33,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960427445] [2021-10-06 21:28:33,410 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:28:33,411 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:33,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:33,412 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:33,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-06 21:28:33,628 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 21:28:33,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:33,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 21:28:33,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:33,722 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:33,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:33,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:33,959 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:33,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960427445] [2021-10-06 21:28:33,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960427445] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:28:33,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:28:33,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-10-06 21:28:33,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168618474] [2021-10-06 21:28:33,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 21:28:33,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:33,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 21:28:33,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:28:33,962 INFO L87 Difference]: Start difference. First operand 1254 states and 4544 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:34,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:34,049 INFO L93 Difference]: Finished difference Result 1370 states and 4845 transitions. [2021-10-06 21:28:34,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 21:28:34,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:28:34,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:34,060 INFO L225 Difference]: With dead ends: 1370 [2021-10-06 21:28:34,060 INFO L226 Difference]: Without dead ends: 1370 [2021-10-06 21:28:34,060 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 90.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:28:34,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2021-10-06 21:28:34,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1254. [2021-10-06 21:28:34,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 1253 states have (on average 3.62170790103751) internal successors, (4538), 1253 states have internal predecessors, (4538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:34,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 4538 transitions. [2021-10-06 21:28:34,111 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 4538 transitions. Word has length 20 [2021-10-06 21:28:34,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:34,112 INFO L470 AbstractCegarLoop]: Abstraction has 1254 states and 4538 transitions. [2021-10-06 21:28:34,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:34,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 4538 transitions. [2021-10-06 21:28:34,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:28:34,117 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:34,117 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:34,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:34,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:34,330 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:34,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:34,331 INFO L82 PathProgramCache]: Analyzing trace with hash 567404985, now seen corresponding path program 7 times [2021-10-06 21:28:34,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:34,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615304846] [2021-10-06 21:28:34,333 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:28:34,333 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:34,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:34,334 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:34,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-06 21:28:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:28:34,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:28:34,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:34,753 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:34,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:35,272 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:35,272 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:35,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615304846] [2021-10-06 21:28:35,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615304846] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:35,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:35,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-06 21:28:35,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559565074] [2021-10-06 21:28:35,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:28:35,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:35,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:28:35,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:28:35,275 INFO L87 Difference]: Start difference. First operand 1254 states and 4538 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:38,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:38,070 INFO L93 Difference]: Finished difference Result 2522 states and 8238 transitions. [2021-10-06 21:28:38,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-06 21:28:38,071 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:28:38,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:38,098 INFO L225 Difference]: With dead ends: 2522 [2021-10-06 21:28:38,098 INFO L226 Difference]: Without dead ends: 2496 [2021-10-06 21:28:38,099 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 2240.1ms TimeCoverageRelationStatistics Valid=412, Invalid=1228, Unknown=0, NotChecked=0, Total=1640 [2021-10-06 21:28:38,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2021-10-06 21:28:38,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 1630. [2021-10-06 21:28:38,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1629 states have (on average 3.6095764272559854) internal successors, (5880), 1629 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:38,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 5880 transitions. [2021-10-06 21:28:38,218 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 5880 transitions. Word has length 20 [2021-10-06 21:28:38,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:38,219 INFO L470 AbstractCegarLoop]: Abstraction has 1630 states and 5880 transitions. [2021-10-06 21:28:38,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:38,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 5880 transitions. [2021-10-06 21:28:38,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:28:38,226 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:38,227 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:38,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-10-06 21:28:38,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:38,439 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:38,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:38,440 INFO L82 PathProgramCache]: Analyzing trace with hash 344303037, now seen corresponding path program 4 times [2021-10-06 21:28:38,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:38,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738542815] [2021-10-06 21:28:38,442 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:28:38,442 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:38,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:38,443 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:38,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-06 21:28:38,668 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:28:38,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:38,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:28:38,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:38,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:38,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:39,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:39,149 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:39,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738542815] [2021-10-06 21:28:39,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738542815] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:39,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:39,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2021-10-06 21:28:39,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934526560] [2021-10-06 21:28:39,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:28:39,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:39,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:28:39,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:28:39,152 INFO L87 Difference]: Start difference. First operand 1630 states and 5880 transitions. Second operand has 11 states, 10 states have (on average 4.0) internal successors, (40), 10 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) [2021-10-06 21:28:40,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:40,895 INFO L93 Difference]: Finished difference Result 2058 states and 7112 transitions. [2021-10-06 21:28:40,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:28:40,896 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.0) internal successors, (40), 10 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 20 [2021-10-06 21:28:40,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:40,914 INFO L225 Difference]: With dead ends: 2058 [2021-10-06 21:28:40,914 INFO L226 Difference]: Without dead ends: 2006 [2021-10-06 21:28:40,915 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 455.7ms TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:28:40,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2006 states. [2021-10-06 21:28:40,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2006 to 1716. [2021-10-06 21:28:41,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1715 states have (on average 3.6221574344023324) internal successors, (6212), 1715 states have internal predecessors, (6212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:41,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 6212 transitions. [2021-10-06 21:28:41,014 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 6212 transitions. Word has length 20 [2021-10-06 21:28:41,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:41,015 INFO L470 AbstractCegarLoop]: Abstraction has 1716 states and 6212 transitions. [2021-10-06 21:28:41,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.0) internal successors, (40), 10 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) [2021-10-06 21:28:41,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 6212 transitions. [2021-10-06 21:28:41,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:28:41,022 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:41,022 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:41,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-10-06 21:28:41,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:41,235 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:41,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:41,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1129014815, now seen corresponding path program 5 times [2021-10-06 21:28:41,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:41,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765417561] [2021-10-06 21:28:41,237 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:28:41,238 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:41,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:41,239 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:41,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-06 21:28:41,466 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:28:41,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:41,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:28:41,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:41,712 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:41,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:41,944 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:28:41,944 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:41,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765417561] [2021-10-06 21:28:41,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [765417561] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:41,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:41,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2021-10-06 21:28:41,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065294669] [2021-10-06 21:28:41,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:28:41,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:41,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:28:41,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:28:41,946 INFO L87 Difference]: Start difference. First operand 1716 states and 6212 transitions. Second operand has 11 states, 10 states have (on average 4.0) internal successors, (40), 10 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) [2021-10-06 21:28:42,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:42,494 INFO L93 Difference]: Finished difference Result 2072 states and 7295 transitions. [2021-10-06 21:28:42,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-06 21:28:42,495 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.0) internal successors, (40), 10 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 20 [2021-10-06 21:28:42,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:42,506 INFO L225 Difference]: With dead ends: 2072 [2021-10-06 21:28:42,506 INFO L226 Difference]: Without dead ends: 2058 [2021-10-06 21:28:42,507 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 319.1ms TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:28:42,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2058 states. [2021-10-06 21:28:42,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2058 to 1756. [2021-10-06 21:28:42,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1756 states, 1755 states have (on average 3.6393162393162393) internal successors, (6387), 1755 states have internal predecessors, (6387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:42,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 6387 transitions. [2021-10-06 21:28:42,604 INFO L78 Accepts]: Start accepts. Automaton has 1756 states and 6387 transitions. Word has length 20 [2021-10-06 21:28:42,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:42,604 INFO L470 AbstractCegarLoop]: Abstraction has 1756 states and 6387 transitions. [2021-10-06 21:28:42,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.0) internal successors, (40), 10 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) [2021-10-06 21:28:42,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1756 states and 6387 transitions. [2021-10-06 21:28:42,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:28:42,612 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:42,612 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:42,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:42,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:42,825 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:42,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:42,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1879558249, now seen corresponding path program 6 times [2021-10-06 21:28:42,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:42,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896299054] [2021-10-06 21:28:42,827 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:28:42,827 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:42,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:42,828 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:42,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-06 21:28:43,085 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:28:43,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:43,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:28:43,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:43,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:43,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:43,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:28:43,598 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:43,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896299054] [2021-10-06 21:28:43,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896299054] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:43,598 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:43,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2021-10-06 21:28:43,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251016917] [2021-10-06 21:28:43,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:28:43,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:43,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:28:43,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:28:43,600 INFO L87 Difference]: Start difference. First operand 1756 states and 6387 transitions. Second operand has 11 states, 10 states have (on average 4.0) internal successors, (40), 10 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) [2021-10-06 21:28:44,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:44,243 INFO L93 Difference]: Finished difference Result 2122 states and 7484 transitions. [2021-10-06 21:28:44,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-06 21:28:44,244 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.0) internal successors, (40), 10 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 20 [2021-10-06 21:28:44,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:44,254 INFO L225 Difference]: With dead ends: 2122 [2021-10-06 21:28:44,254 INFO L226 Difference]: Without dead ends: 2092 [2021-10-06 21:28:44,255 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 433.6ms TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:28:44,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2092 states. [2021-10-06 21:28:44,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2092 to 1826. [2021-10-06 21:28:44,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1826 states, 1825 states have (on average 3.652054794520548) internal successors, (6665), 1825 states have internal predecessors, (6665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:44,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1826 states to 1826 states and 6665 transitions. [2021-10-06 21:28:44,364 INFO L78 Accepts]: Start accepts. Automaton has 1826 states and 6665 transitions. Word has length 20 [2021-10-06 21:28:44,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:44,364 INFO L470 AbstractCegarLoop]: Abstraction has 1826 states and 6665 transitions. [2021-10-06 21:28:44,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.0) internal successors, (40), 10 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) [2021-10-06 21:28:44,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1826 states and 6665 transitions. [2021-10-06 21:28:44,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:28:44,373 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:44,373 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:44,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:44,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:44,587 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:44,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:44,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1343274253, now seen corresponding path program 7 times [2021-10-06 21:28:44,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:44,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560452029] [2021-10-06 21:28:44,589 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:28:44,589 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:44,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:44,590 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:44,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-06 21:28:44,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:28:44,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:28:44,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:45,043 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:45,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:45,191 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:45,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560452029] [2021-10-06 21:28:45,191 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-10-06 21:28:45,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1344368254] [2021-10-06 21:28:45,192 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:28:45,192 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-06 21:28:45,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 [2021-10-06 21:28:45,193 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-06 21:28:45,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-10-06 21:28:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:28:45,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:28:45,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:45,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:45,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:45,985 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-10-06 21:28:45,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217210518] [2021-10-06 21:28:45,986 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:28:45,986 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 21:28:45,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 21:28:45,994 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 21:28:46,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-06 21:28:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:28:46,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:28:46,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:46,588 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:46,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:46,673 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-10-06 21:28:46,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:28:46,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-06 21:28:46,674 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-06 21:28:46,674 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-06 21:28:46,678 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:28:46,681 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 21:28:46,681 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 21:28:46,681 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 21:28:46,681 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 21:28:46,681 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 21:28:46,681 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 21:28:46,682 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 21:28:46,682 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 21:28:46,682 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-06 21:28:46,682 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-06 21:28:46,682 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-06 21:28:46,682 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-06 21:28:46,683 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:28:46,683 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 21:28:46,683 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 21:28:46,683 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-06 21:28:46,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:46,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:47,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:47,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2021-10-06 21:28:47,303 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 21:28:47,303 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 21:28:47,304 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0 at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transformations.BlockEncodingBacktranslator.translateProgramExecution(BlockEncodingBacktranslator.java:130) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getProgramExecutionAsString(UnprovableResult.java:132) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getLongDescription(UnprovableResult.java:125) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:589) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-06 21:28:47,306 INFO L168 Benchmark]: Toolchain (without parser) took 46133.38 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 133.8 MB in the beginning and 104.9 MB in the end (delta: 28.9 MB). Peak memory consumption was 62.6 MB. Max. memory is 8.0 GB. [2021-10-06 21:28:47,307 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 160.4 MB. Free memory is still 131.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 21:28:47,307 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.08 ms. Allocated memory is still 160.4 MB. Free memory was 133.5 MB in the beginning and 122.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:28:47,307 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.82 ms. Allocated memory is still 160.4 MB. Free memory was 122.6 MB in the beginning and 121.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:28:47,308 INFO L168 Benchmark]: Boogie Preprocessor took 33.33 ms. Allocated memory is still 160.4 MB. Free memory was 121.1 MB in the beginning and 119.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:28:47,308 INFO L168 Benchmark]: RCFGBuilder took 722.85 ms. Allocated memory is still 160.4 MB. Free memory was 119.7 MB in the beginning and 139.4 MB in the end (delta: -19.7 MB). Peak memory consumption was 17.2 MB. Max. memory is 8.0 GB. [2021-10-06 21:28:47,309 INFO L168 Benchmark]: TraceAbstraction took 44924.08 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 138.9 MB in the beginning and 104.9 MB in the end (delta: 33.9 MB). Peak memory consumption was 66.4 MB. Max. memory is 8.0 GB. [2021-10-06 21:28:47,311 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 160.4 MB. Free memory is still 131.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 392.08 ms. Allocated memory is still 160.4 MB. Free memory was 133.5 MB in the beginning and 122.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 42.82 ms. Allocated memory is still 160.4 MB. Free memory was 122.6 MB in the beginning and 121.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.33 ms. Allocated memory is still 160.4 MB. Free memory was 121.1 MB in the beginning and 119.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 722.85 ms. Allocated memory is still 160.4 MB. Free memory was 119.7 MB in the beginning and 139.4 MB in the end (delta: -19.7 MB). Peak memory consumption was 17.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 44924.08 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 138.9 MB in the beginning and 104.9 MB in the end (delta: 33.9 MB). Peak memory consumption was 66.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8426.7ms, 100 PlacesBefore, 45 PlacesAfterwards, 97 TransitionsBefore, 38 TransitionsAfterwards, 690 CoEnabledTransitionPairs, 6 FixpointIterations, 54 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 4 ChoiceCompositions, 91 TotalNumberOfCompositions, 1421 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1148, positive: 1120, positive conditional: 0, positive unconditional: 1120, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 417, positive: 414, positive conditional: 0, positive unconditional: 414, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 417, positive: 411, positive conditional: 0, positive unconditional: 411, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 100, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 85, negative conditional: 0, negative unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1148, positive: 706, positive conditional: 0, positive unconditional: 706, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 417, unknown conditional: 0, unknown unconditional: 417] , Statistics on independence cache: Total cache size (in pairs): 100, Positive cache size: 97, Positive conditional cache size: 0, Positive unconditional cache size: 97, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - 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 - ExceptionOrErrorResult: ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transformations.BlockEncodingBacktranslator.translateProgramExecution(BlockEncodingBacktranslator.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-06 21:28:47,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...