/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/parallel/misc-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 21:19:27,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 21:19:27,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 21:19:27,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 21:19:27,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-06 21:19:27,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-06 21:19:27,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-06 21:19:27,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-06 21:19:27,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-06 21:19:27,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-06 21:19:27,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-06 21:19:27,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-06 21:19:27,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-06 21:19:27,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-06 21:19:27,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-06 21:19:27,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-06 21:19:27,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-06 21:19:27,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 21:19:27,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 21:19:27,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 21:19:27,535 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 21:19:27,584 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 21:19:27,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 21:19:27,585 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 21:19:27,585 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 21:19:27,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 21:19:27,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 21:19:27,590 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 21:19:27,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 21:19:27,590 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 21:19:27,590 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 21:19:27,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 21:19:27,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 21:19:27,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 21:19:27,592 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 21:19:27,592 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 21:19:27,593 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 21:19:27,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 21:19:27,593 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 21:19:27,593 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 21:19:27,593 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 21:19:27,594 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 21:19:27,594 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 21:19:27,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 21:19:27,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 21:19:27,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 21:19:27,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:19:27,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 21:19:27,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 21:19:27,595 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 21:19:27,595 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 21:19:27,596 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 21:19:27,596 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 21:19:27,596 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 21:19:27,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 21:19:28,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 21:19:28,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 21:19:28,025 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 21:19:28,026 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 21:19:28,027 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel/misc-2.wvr.c [2021-10-06 21:19:28,112 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/596791b26/9dd5e9c0a6804862bc0a62a8e36b66bf/FLAG08e05786a [2021-10-06 21:19:28,618 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 21:19:28,618 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel/misc-2.wvr.c [2021-10-06 21:19:28,630 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/596791b26/9dd5e9c0a6804862bc0a62a8e36b66bf/FLAG08e05786a [2021-10-06 21:19:28,975 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/596791b26/9dd5e9c0a6804862bc0a62a8e36b66bf [2021-10-06 21:19:28,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 21:19:28,984 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 21:19:28,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 21:19:28,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 21:19:28,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 21:19:28,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:19:28" (1/1) ... [2021-10-06 21:19:28,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@533ed047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:28, skipping insertion in model container [2021-10-06 21:19:28,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:19:28" (1/1) ... [2021-10-06 21:19:29,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 21:19:29,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 21:19:29,194 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel/misc-2.wvr.c[2379,2392] [2021-10-06 21:19:29,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:19:29,211 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 21:19:29,236 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel/misc-2.wvr.c[2379,2392] [2021-10-06 21:19:29,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:19:29,256 INFO L208 MainTranslator]: Completed translation [2021-10-06 21:19:29,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:29 WrapperNode [2021-10-06 21:19:29,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 21:19:29,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 21:19:29,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 21:19:29,258 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 21:19:29,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:29" (1/1) ... [2021-10-06 21:19:29,277 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:29" (1/1) ... [2021-10-06 21:19:29,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 21:19:29,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 21:19:29,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 21:19:29,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 21:19:29,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:29" (1/1) ... [2021-10-06 21:19:29,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:29" (1/1) ... [2021-10-06 21:19:29,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:29" (1/1) ... [2021-10-06 21:19:29,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:29" (1/1) ... [2021-10-06 21:19:29,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:29" (1/1) ... [2021-10-06 21:19:29,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:29" (1/1) ... [2021-10-06 21:19:29,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:29" (1/1) ... [2021-10-06 21:19:29,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 21:19:29,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 21:19:29,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 21:19:29,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 21:19:29,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:29" (1/1) ... [2021-10-06 21:19:29,399 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:19:29,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 21:19:29,428 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 21:19:29,445 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 21:19:29,506 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 21:19:29,506 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 21:19:29,506 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 21:19:29,507 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 21:19:29,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 21:19:29,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 21:19:29,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-06 21:19:29,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-06 21:19:29,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 21:19:29,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 21:19:29,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 21:19:29,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 21:19:29,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 21:19:29,513 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 21:19:30,053 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 21:19:30,053 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-06 21:19:30,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:19:30 BoogieIcfgContainer [2021-10-06 21:19:30,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 21:19:30,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 21:19:30,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 21:19:30,062 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 21:19:30,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 09:19:28" (1/3) ... [2021-10-06 21:19:30,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e68455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:19:30, skipping insertion in model container [2021-10-06 21:19:30,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:29" (2/3) ... [2021-10-06 21:19:30,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e68455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:19:30, skipping insertion in model container [2021-10-06 21:19:30,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:19:30" (3/3) ... [2021-10-06 21:19:30,066 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-2.wvr.c [2021-10-06 21:19:30,072 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 21:19:30,073 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-06 21:19:30,073 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 21:19:30,106 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:30,107 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:30,107 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:30,107 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:30,108 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:30,108 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:30,108 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:30,109 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:30,109 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:30,109 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:30,109 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:30,110 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:30,110 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:30,110 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:30,111 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:30,111 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:30,111 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:30,112 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:30,112 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:30,113 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:30,113 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:30,113 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:30,113 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:30,114 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:30,117 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:30,118 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:30,118 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:30,118 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:30,118 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:30,121 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:30,121 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:30,122 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:30,127 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-06 21:19:30,180 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 21:19:30,188 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 21:19:30,189 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-06 21:19:30,205 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 21:19:30,217 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 105 transitions, 226 flow [2021-10-06 21:19:30,220 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 105 transitions, 226 flow [2021-10-06 21:19:30,222 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 104 places, 105 transitions, 226 flow [2021-10-06 21:19:30,295 INFO L129 PetriNetUnfolder]: 8/103 cut-off events. [2021-10-06 21:19:30,295 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-06 21:19:30,303 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 103 events. 8/103 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-10-06 21:19:30,309 INFO L116 LiptonReduction]: Number of co-enabled transitions 936 [2021-10-06 21:19:38,338 INFO L131 LiptonReduction]: Checked pairs total: 1089 [2021-10-06 21:19:38,339 INFO L133 LiptonReduction]: Total number of compositions: 114 [2021-10-06 21:19:38,349 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 25 transitions, 66 flow [2021-10-06 21:19:38,360 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 39 states, 29 states have (on average 2.8620689655172415) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:38,362 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 29 states have (on average 2.8620689655172415) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:38,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-06 21:19:38,367 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:38,368 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-06 21:19:38,369 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:19:38,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:38,375 INFO L82 PathProgramCache]: Analyzing trace with hash 423, now seen corresponding path program 1 times [2021-10-06 21:19:38,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:38,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [297760452] [2021-10-06 21:19:38,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:19:38,389 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:38,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:38,393 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 21:19:38,398 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 21:19:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:19:38,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-06 21:19:38,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:38,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:38,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:38,452 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 21:19:38,452 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:38,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [297760452] [2021-10-06 21:19:38,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [297760452] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:19:38,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:19:38,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-06 21:19:38,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339656021] [2021-10-06 21:19:38,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-06 21:19:38,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:38,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-06 21:19:38,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 21:19:38,480 INFO L87 Difference]: Start difference. First operand has 39 states, 29 states have (on average 2.8620689655172415) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 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 21:19:38,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:38,496 INFO L93 Difference]: Finished difference Result 36 states and 80 transitions. [2021-10-06 21:19:38,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-06 21:19:38,497 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 21:19:38,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:38,507 INFO L225 Difference]: With dead ends: 36 [2021-10-06 21:19:38,507 INFO L226 Difference]: Without dead ends: 36 [2021-10-06 21:19:38,509 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 21:19:38,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-06 21:19:38,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-06 21:19:38,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 2.7586206896551726) internal successors, (80), 35 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:38,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 80 transitions. [2021-10-06 21:19:38,550 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 80 transitions. Word has length 1 [2021-10-06 21:19:38,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:38,551 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 80 transitions. [2021-10-06 21:19:38,551 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 21:19:38,551 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 80 transitions. [2021-10-06 21:19:38,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:19:38,552 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:38,553 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:19:38,573 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 21:19:38,766 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 21:19:38,768 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:19:38,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:38,770 INFO L82 PathProgramCache]: Analyzing trace with hash 414425, now seen corresponding path program 1 times [2021-10-06 21:19:38,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:38,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888209655] [2021-10-06 21:19:38,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:19:38,771 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:38,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:38,779 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 21:19:38,793 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 21:19:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:19:38,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:19:38,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:39,019 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-06 21:19:39,020 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 3 case distinctions, treesize of input 15 treesize of output 38 [2021-10-06 21:19:39,129 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 21:19:39,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:39,185 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 21:19:39,186 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:39,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888209655] [2021-10-06 21:19:39,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1888209655] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:19:39,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:19:39,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:19:39,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296862343] [2021-10-06 21:19:39,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:19:39,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:39,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:19:39,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:19:39,190 INFO L87 Difference]: Start difference. First operand 36 states and 80 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 21:19:39,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:39,220 INFO L93 Difference]: Finished difference Result 32 states and 72 transitions. [2021-10-06 21:19:39,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:19:39,221 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 21:19:39,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:39,223 INFO L225 Difference]: With dead ends: 32 [2021-10-06 21:19:39,223 INFO L226 Difference]: Without dead ends: 32 [2021-10-06 21:19:39,223 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:19:39,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-06 21:19:39,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-06 21:19:39,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 31 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:39,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 72 transitions. [2021-10-06 21:19:39,230 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 72 transitions. Word has length 3 [2021-10-06 21:19:39,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:39,232 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 72 transitions. [2021-10-06 21:19:39,232 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 21:19:39,232 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 72 transitions. [2021-10-06 21:19:39,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:19:39,232 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:39,233 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:19:39,247 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 21:19:39,445 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 21:19:39,446 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:19:39,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:39,448 INFO L82 PathProgramCache]: Analyzing trace with hash 414427, now seen corresponding path program 1 times [2021-10-06 21:19:39,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:39,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582266647] [2021-10-06 21:19:39,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:19:39,449 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:39,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:39,450 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 21:19:39,456 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 21:19:39,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:19:39,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:19:39,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:39,594 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-06 21:19:39,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 48 [2021-10-06 21:19:39,888 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 21:19:39,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:39,895 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 21:19:39,896 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:39,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582266647] [2021-10-06 21:19:39,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582266647] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:19:39,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:19:39,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:19:39,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049797548] [2021-10-06 21:19:39,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:19:39,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:39,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:19:39,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:19:39,899 INFO L87 Difference]: Start difference. First operand 32 states and 72 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:39,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:39,916 INFO L93 Difference]: Finished difference Result 28 states and 64 transitions. [2021-10-06 21:19:39,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:19:39,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-06 21:19:39,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:39,918 INFO L225 Difference]: With dead ends: 28 [2021-10-06 21:19:39,918 INFO L226 Difference]: Without dead ends: 28 [2021-10-06 21:19:39,918 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:19:39,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-06 21:19:39,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-06 21:19:39,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 2.56) internal successors, (64), 27 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:39,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 64 transitions. [2021-10-06 21:19:39,924 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 64 transitions. Word has length 3 [2021-10-06 21:19:39,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:39,924 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 64 transitions. [2021-10-06 21:19:39,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:39,924 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 64 transitions. [2021-10-06 21:19:39,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:19:39,925 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:39,925 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:19:39,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-06 21:19:40,138 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 21:19:40,140 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:19:40,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:40,142 INFO L82 PathProgramCache]: Analyzing trace with hash 398272315, now seen corresponding path program 1 times [2021-10-06 21:19:40,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:40,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993709414] [2021-10-06 21:19:40,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:19:40,143 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:40,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:40,144 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 21:19:40,169 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 21:19:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:19:40,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:19:40,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:40,295 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-06 21:19:40,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 48 [2021-10-06 21:19:40,548 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 21:19:40,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:40,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:40,562 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:40,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993709414] [2021-10-06 21:19:40,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993709414] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:19:40,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:19:40,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:19:40,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295724287] [2021-10-06 21:19:40,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:19:40,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:40,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:19:40,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:19:40,565 INFO L87 Difference]: Start difference. First operand 28 states and 64 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 21:19:40,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:40,581 INFO L93 Difference]: Finished difference Result 24 states and 52 transitions. [2021-10-06 21:19:40,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:19:40,582 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 21:19:40,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:40,583 INFO L225 Difference]: With dead ends: 24 [2021-10-06 21:19:40,583 INFO L226 Difference]: Without dead ends: 24 [2021-10-06 21:19:40,584 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:19:40,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-06 21:19:40,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-06 21:19:40,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 23 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:40,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 52 transitions. [2021-10-06 21:19:40,588 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 52 transitions. Word has length 5 [2021-10-06 21:19:40,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:40,588 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 52 transitions. [2021-10-06 21:19:40,588 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 21:19:40,589 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 52 transitions. [2021-10-06 21:19:40,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:19:40,589 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:40,589 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:19:40,601 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 21:19:40,801 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 21:19:40,802 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:19:40,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:40,804 INFO L82 PathProgramCache]: Analyzing trace with hash 398272316, now seen corresponding path program 1 times [2021-10-06 21:19:40,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:40,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203580054] [2021-10-06 21:19:40,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:19:40,805 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:40,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:40,807 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 21:19:40,807 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 21:19:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:19:40,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:19:40,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:40,924 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 21:19:40,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:40,978 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 21:19:40,979 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:40,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203580054] [2021-10-06 21:19:40,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203580054] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:19:40,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:19:40,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:19:40,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999273319] [2021-10-06 21:19:40,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:19:40,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:40,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:19:40,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:19:40,981 INFO L87 Difference]: Start difference. First operand 24 states and 52 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 21:19:40,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:40,997 INFO L93 Difference]: Finished difference Result 20 states and 40 transitions. [2021-10-06 21:19:40,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:19:40,999 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 21:19:40,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:40,999 INFO L225 Difference]: With dead ends: 20 [2021-10-06 21:19:40,999 INFO L226 Difference]: Without dead ends: 20 [2021-10-06 21:19:41,000 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:19:41,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-06 21:19:41,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-06 21:19:41,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 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 21:19:41,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 40 transitions. [2021-10-06 21:19:41,003 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 40 transitions. Word has length 5 [2021-10-06 21:19:41,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:41,004 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 40 transitions. [2021-10-06 21:19:41,004 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 21:19:41,004 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 40 transitions. [2021-10-06 21:19:41,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-06 21:19:41,005 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:41,005 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:19:41,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-06 21:19:41,213 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 21:19:41,214 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:19:41,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:41,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1166475448, now seen corresponding path program 1 times [2021-10-06 21:19:41,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:41,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1153005540] [2021-10-06 21:19:41,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:19:41,216 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:41,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:41,217 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 21:19:41,249 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 21:19:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:19:41,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:19:41,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:41,357 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 21:19:41,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:41,389 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 21:19:41,390 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:41,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1153005540] [2021-10-06 21:19:41,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1153005540] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:19:41,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:19:41,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:19:41,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385437137] [2021-10-06 21:19:41,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:19:41,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:41,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:19:41,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:19:41,393 INFO L87 Difference]: Start difference. First operand 20 states and 40 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:41,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:41,410 INFO L93 Difference]: Finished difference Result 37 states and 77 transitions. [2021-10-06 21:19:41,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:19:41,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-06 21:19:41,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:41,413 INFO L225 Difference]: With dead ends: 37 [2021-10-06 21:19:41,413 INFO L226 Difference]: Without dead ends: 32 [2021-10-06 21:19:41,413 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:19:41,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-06 21:19:41,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-06 21:19:41,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 2.161290322580645) internal successors, (67), 31 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:41,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 67 transitions. [2021-10-06 21:19:41,419 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 67 transitions. Word has length 11 [2021-10-06 21:19:41,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:41,419 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 67 transitions. [2021-10-06 21:19:41,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:41,420 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 67 transitions. [2021-10-06 21:19:41,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-06 21:19:41,421 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:41,421 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:19:41,435 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 21:19:41,633 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 21:19:41,634 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:19:41,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:41,635 INFO L82 PathProgramCache]: Analyzing trace with hash 30980987, now seen corresponding path program 1 times [2021-10-06 21:19:41,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:41,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045722969] [2021-10-06 21:19:41,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:19:41,637 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:41,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:41,638 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 21:19:41,643 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 21:19:41,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:19:41,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 21:19:41,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:41,816 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 21:19:41,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:41,903 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 21:19:41,904 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:41,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045722969] [2021-10-06 21:19:41,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045722969] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:19:41,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:19:41,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-06 21:19:41,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496072859] [2021-10-06 21:19:41,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-06 21:19:41,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:41,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-06 21:19:41,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:19:41,907 INFO L87 Difference]: Start difference. First operand 32 states and 67 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:42,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:42,286 INFO L93 Difference]: Finished difference Result 50 states and 95 transitions. [2021-10-06 21:19:42,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:19:42,287 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-06 21:19:42,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:42,288 INFO L225 Difference]: With dead ends: 50 [2021-10-06 21:19:42,288 INFO L226 Difference]: Without dead ends: 42 [2021-10-06 21:19:42,288 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 74.6ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:19:42,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-06 21:19:42,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2021-10-06 21:19:42,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:42,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 73 transitions. [2021-10-06 21:19:42,293 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 73 transitions. Word has length 12 [2021-10-06 21:19:42,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:42,294 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 73 transitions. [2021-10-06 21:19:42,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:42,294 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 73 transitions. [2021-10-06 21:19:42,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-06 21:19:42,295 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:42,295 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:19:42,306 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 21:19:42,503 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 21:19:42,504 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:19:42,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:42,505 INFO L82 PathProgramCache]: Analyzing trace with hash -903974241, now seen corresponding path program 1 times [2021-10-06 21:19:42,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:42,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865200412] [2021-10-06 21:19:42,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:19:42,507 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:42,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:42,508 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 21:19:42,509 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 21:19:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:19:42,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 21:19:42,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:42,659 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 21:19:42,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:42,819 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 21:19:42,819 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:42,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1865200412] [2021-10-06 21:19:42,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1865200412] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:19:42,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:19:42,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-06 21:19:42,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119039794] [2021-10-06 21:19:42,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-06 21:19:42,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:42,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-06 21:19:42,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:19:42,823 INFO L87 Difference]: Start difference. First operand 34 states and 73 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:42,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:42,915 INFO L93 Difference]: Finished difference Result 60 states and 131 transitions. [2021-10-06 21:19:42,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:19:42,916 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-06 21:19:42,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:42,917 INFO L225 Difference]: With dead ends: 60 [2021-10-06 21:19:42,917 INFO L226 Difference]: Without dead ends: 60 [2021-10-06 21:19:42,917 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 39.7ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:19:42,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-06 21:19:42,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 48. [2021-10-06 21:19:42,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 2.404255319148936) internal successors, (113), 47 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:42,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 113 transitions. [2021-10-06 21:19:42,925 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 113 transitions. Word has length 12 [2021-10-06 21:19:42,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:42,925 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 113 transitions. [2021-10-06 21:19:42,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:42,925 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 113 transitions. [2021-10-06 21:19:42,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-06 21:19:42,926 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:42,926 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:19:42,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-10-06 21:19:43,138 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 21:19:43,139 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:19:43,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:43,141 INFO L82 PathProgramCache]: Analyzing trace with hash -978281939, now seen corresponding path program 2 times [2021-10-06 21:19:43,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:43,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183866026] [2021-10-06 21:19:43,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:19:43,142 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:43,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:43,143 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 21:19:43,144 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 21:19:43,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:19:43,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:19:43,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:19:43,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:43,337 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 21:19:43,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:43,461 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 21:19:43,462 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:43,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183866026] [2021-10-06 21:19:43,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [183866026] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:19:43,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:19:43,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-06 21:19:43,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99564555] [2021-10-06 21:19:43,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-06 21:19:43,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:43,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-06 21:19:43,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:19:43,464 INFO L87 Difference]: Start difference. First operand 48 states and 113 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:43,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:43,574 INFO L93 Difference]: Finished difference Result 112 states and 263 transitions. [2021-10-06 21:19:43,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:19:43,578 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-06 21:19:43,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:43,580 INFO L225 Difference]: With dead ends: 112 [2021-10-06 21:19:43,583 INFO L226 Difference]: Without dead ends: 104 [2021-10-06 21:19:43,583 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 40.0ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:19:43,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-06 21:19:43,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 86. [2021-10-06 21:19:43,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.6470588235294117) internal successors, (225), 85 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:43,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 225 transitions. [2021-10-06 21:19:43,599 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 225 transitions. Word has length 12 [2021-10-06 21:19:43,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:43,600 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 225 transitions. [2021-10-06 21:19:43,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:43,600 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 225 transitions. [2021-10-06 21:19:43,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 21:19:43,601 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:43,601 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:19:43,618 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 21:19:43,814 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 21:19:43,815 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:19:43,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:43,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1356371416, now seen corresponding path program 2 times [2021-10-06 21:19:43,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:43,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700553830] [2021-10-06 21:19:43,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:19:43,818 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:43,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:43,820 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 21:19:43,827 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 21:19:43,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:19:43,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:19:43,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:19:43,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:44,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:44,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:44,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:44,788 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:44,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700553830] [2021-10-06 21:19:44,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1700553830] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:19:44,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:19:44,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-06 21:19:44,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551226132] [2021-10-06 21:19:44,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:19:44,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:44,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:19:44,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:19:44,790 INFO L87 Difference]: Start difference. First operand 86 states and 225 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:44,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:44,931 INFO L93 Difference]: Finished difference Result 133 states and 328 transitions. [2021-10-06 21:19:44,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:19:44,932 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-06 21:19:44,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:44,933 INFO L225 Difference]: With dead ends: 133 [2021-10-06 21:19:44,933 INFO L226 Difference]: Without dead ends: 128 [2021-10-06 21:19:44,934 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 372.7ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:19:44,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-06 21:19:44,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 110. [2021-10-06 21:19:44,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 2.5871559633027523) internal successors, (282), 109 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:44,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 282 transitions. [2021-10-06 21:19:44,945 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 282 transitions. Word has length 13 [2021-10-06 21:19:44,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:44,945 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 282 transitions. [2021-10-06 21:19:44,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:44,945 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 282 transitions. [2021-10-06 21:19:44,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 21:19:44,947 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:44,947 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:19:44,958 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 21:19:45,156 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 21:19:45,157 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:19:45,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:45,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1143379700, now seen corresponding path program 3 times [2021-10-06 21:19:45,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:45,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170189117] [2021-10-06 21:19:45,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:19:45,159 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:45,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:45,160 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 21:19:45,161 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 21:19:45,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:19:45,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:19:45,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:19:45,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:45,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:45,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:45,811 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:45,811 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:45,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [170189117] [2021-10-06 21:19:45,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [170189117] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:19:45,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:19:45,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-06 21:19:45,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770134966] [2021-10-06 21:19:45,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:19:45,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:45,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:19:45,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:19:45,814 INFO L87 Difference]: Start difference. First operand 110 states and 282 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:45,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:45,911 INFO L93 Difference]: Finished difference Result 131 states and 317 transitions. [2021-10-06 21:19:45,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:19:45,912 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-06 21:19:45,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:45,913 INFO L225 Difference]: With dead ends: 131 [2021-10-06 21:19:45,913 INFO L226 Difference]: Without dead ends: 122 [2021-10-06 21:19:45,914 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 125.8ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:19:45,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-06 21:19:45,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 114. [2021-10-06 21:19:45,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 2.566371681415929) internal successors, (290), 113 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:45,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 290 transitions. [2021-10-06 21:19:45,923 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 290 transitions. Word has length 13 [2021-10-06 21:19:45,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:45,923 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 290 transitions. [2021-10-06 21:19:45,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:45,924 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 290 transitions. [2021-10-06 21:19:45,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:19:45,925 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:45,925 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:19:45,946 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 21:19:46,126 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 21:19:46,127 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:19:46,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:46,128 INFO L82 PathProgramCache]: Analyzing trace with hash 690993288, now seen corresponding path program 1 times [2021-10-06 21:19:46,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:46,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90730256] [2021-10-06 21:19:46,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:19:46,129 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:46,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:46,130 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 21:19:46,131 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 21:19:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:19:46,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:19:46,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:46,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:46,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:47,855 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:47,855 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:47,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90730256] [2021-10-06 21:19:47,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90730256] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:19:47,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:19:47,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-06 21:19:47,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863882024] [2021-10-06 21:19:47,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:19:47,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:47,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:19:47,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:19:47,858 INFO L87 Difference]: Start difference. First operand 114 states and 290 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:48,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:48,653 INFO L93 Difference]: Finished difference Result 195 states and 505 transitions. [2021-10-06 21:19:48,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:19:48,654 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 21:19:48,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:48,656 INFO L225 Difference]: With dead ends: 195 [2021-10-06 21:19:48,657 INFO L226 Difference]: Without dead ends: 190 [2021-10-06 21:19:48,657 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1113.4ms TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:19:48,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-10-06 21:19:48,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 154. [2021-10-06 21:19:48,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 2.7908496732026142) internal successors, (427), 153 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:48,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 427 transitions. [2021-10-06 21:19:48,670 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 427 transitions. Word has length 15 [2021-10-06 21:19:48,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:48,670 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 427 transitions. [2021-10-06 21:19:48,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:48,671 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 427 transitions. [2021-10-06 21:19:48,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:19:48,672 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:48,673 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:19:48,688 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 21:19:48,888 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 21:19:48,889 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:19:48,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:48,890 INFO L82 PathProgramCache]: Analyzing trace with hash 250402190, now seen corresponding path program 2 times [2021-10-06 21:19:48,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:48,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1766604390] [2021-10-06 21:19:48,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:19:48,891 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:48,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:48,892 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 21:19:48,893 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 21:19:49,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:19:49,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:19:49,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:19:49,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:49,776 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:49,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:50,800 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:50,801 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:50,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1766604390] [2021-10-06 21:19:50,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1766604390] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:19:50,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:19:50,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-06 21:19:50,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445738667] [2021-10-06 21:19:50,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:19:50,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:50,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:19:50,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:19:50,803 INFO L87 Difference]: Start difference. First operand 154 states and 427 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:51,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:51,725 INFO L93 Difference]: Finished difference Result 259 states and 690 transitions. [2021-10-06 21:19:51,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:19:51,726 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 21:19:51,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:51,728 INFO L225 Difference]: With dead ends: 259 [2021-10-06 21:19:51,728 INFO L226 Difference]: Without dead ends: 254 [2021-10-06 21:19:51,729 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 921.9ms TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:19:51,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-10-06 21:19:51,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 186. [2021-10-06 21:19:51,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 2.962162162162162) internal successors, (548), 185 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:51,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 548 transitions. [2021-10-06 21:19:51,741 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 548 transitions. Word has length 15 [2021-10-06 21:19:51,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:51,741 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 548 transitions. [2021-10-06 21:19:51,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:51,741 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 548 transitions. [2021-10-06 21:19:51,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:19:51,743 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:51,743 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:19:51,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-06 21:19:51,955 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 21:19:51,956 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:19:51,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:51,957 INFO L82 PathProgramCache]: Analyzing trace with hash -3923064, now seen corresponding path program 3 times [2021-10-06 21:19:51,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:51,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243103231] [2021-10-06 21:19:51,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:19:51,958 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:51,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:51,959 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 21:19:51,962 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 21:19:52,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:19:52,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:19:52,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:19:52,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:52,751 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:52,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:53,994 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:53,994 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:53,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243103231] [2021-10-06 21:19:53,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243103231] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:19:53,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:19:53,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-06 21:19:53,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280326421] [2021-10-06 21:19:53,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:19:53,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:53,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:19:53,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:19:53,996 INFO L87 Difference]: Start difference. First operand 186 states and 548 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:54,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:54,657 INFO L93 Difference]: Finished difference Result 243 states and 696 transitions. [2021-10-06 21:19:54,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-06 21:19:54,658 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 21:19:54,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:54,661 INFO L225 Difference]: With dead ends: 243 [2021-10-06 21:19:54,661 INFO L226 Difference]: Without dead ends: 238 [2021-10-06 21:19:54,661 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1116.9ms TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:19:54,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-10-06 21:19:54,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 210. [2021-10-06 21:19:54,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 3.014354066985646) internal successors, (630), 209 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:54,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 630 transitions. [2021-10-06 21:19:54,672 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 630 transitions. Word has length 15 [2021-10-06 21:19:54,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:54,673 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 630 transitions. [2021-10-06 21:19:54,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:54,673 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 630 transitions. [2021-10-06 21:19:54,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:19:54,681 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:54,682 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:19:54,697 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 21:19:54,885 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 21:19:54,886 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:19:54,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:54,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1538282224, now seen corresponding path program 4 times [2021-10-06 21:19:54,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:54,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29260474] [2021-10-06 21:19:54,888 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:19:54,889 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:54,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:54,890 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 21:19:54,891 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 21:19:55,075 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:19:55,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:19:55,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:19:55,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:55,607 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:55,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:56,449 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:56,450 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:56,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29260474] [2021-10-06 21:19:56,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29260474] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:19:56,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:19:56,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-06 21:19:56,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443546874] [2021-10-06 21:19:56,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:19:56,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:19:56,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:19:56,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:19:56,453 INFO L87 Difference]: Start difference. First operand 210 states and 630 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:56,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:19:56,822 INFO L93 Difference]: Finished difference Result 297 states and 893 transitions. [2021-10-06 21:19:56,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:19:56,823 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 21:19:56,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:19:56,826 INFO L225 Difference]: With dead ends: 297 [2021-10-06 21:19:56,826 INFO L226 Difference]: Without dead ends: 292 [2021-10-06 21:19:56,826 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 473.7ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:19:56,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-10-06 21:19:56,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 226. [2021-10-06 21:19:56,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 3.102222222222222) internal successors, (698), 225 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:56,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 698 transitions. [2021-10-06 21:19:56,837 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 698 transitions. Word has length 15 [2021-10-06 21:19:56,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:19:56,838 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 698 transitions. [2021-10-06 21:19:56,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:56,838 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 698 transitions. [2021-10-06 21:19:56,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:19:56,839 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:56,839 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:19:56,852 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 21:19:57,052 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 21:19:57,052 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:19:57,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:57,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1777936955, now seen corresponding path program 5 times [2021-10-06 21:19:57,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:57,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1696188556] [2021-10-06 21:19:57,055 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:19:57,055 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:57,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:57,056 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 21:19:57,060 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 21:19:57,285 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:19:57,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:19:57,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:19:57,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:57,549 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 21:19:57,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:00,033 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 21:20:00,034 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:00,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1696188556] [2021-10-06 21:20:00,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1696188556] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:20:00,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:20:00,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-06 21:20:00,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155716994] [2021-10-06 21:20:00,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:20:00,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:00,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:20:00,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=64, Unknown=1, NotChecked=0, Total=90 [2021-10-06 21:20:00,037 INFO L87 Difference]: Start difference. First operand 226 states and 698 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:08,329 WARN L207 SmtUtils]: Spent 6.05 s on a formula simplification that was a NOOP. DAG size: 19 [2021-10-06 21:20:14,515 WARN L207 SmtUtils]: Spent 6.08 s on a formula simplification that was a NOOP. DAG size: 21 [2021-10-06 21:20:14,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:14,691 INFO L93 Difference]: Finished difference Result 624 states and 1870 transitions. [2021-10-06 21:20:14,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-06 21:20:14,693 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:20:14,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:14,698 INFO L225 Difference]: With dead ends: 624 [2021-10-06 21:20:14,698 INFO L226 Difference]: Without dead ends: 616 [2021-10-06 21:20:14,699 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 16606.1ms TimeCoverageRelationStatistics Valid=66, Invalid=172, Unknown=2, NotChecked=0, Total=240 [2021-10-06 21:20:14,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-10-06 21:20:14,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 490. [2021-10-06 21:20:14,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 3.229038854805726) internal successors, (1579), 489 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:14,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 1579 transitions. [2021-10-06 21:20:14,722 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 1579 transitions. Word has length 16 [2021-10-06 21:20:14,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:14,723 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 1579 transitions. [2021-10-06 21:20:14,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:14,723 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1579 transitions. [2021-10-06 21:20:14,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:20:14,725 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:14,725 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:20:14,738 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 21:20:14,926 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 21:20:14,927 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:20:14,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:14,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1080331487, now seen corresponding path program 3 times [2021-10-06 21:20:14,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:14,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163592742] [2021-10-06 21:20:14,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:20:14,929 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:14,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:14,931 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 21:20:14,942 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 21:20:15,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:20:15,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:20:15,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 21:20:15,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:15,320 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-06 21:20:15,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:15,424 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-06 21:20:15,425 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:15,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163592742] [2021-10-06 21:20:15,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163592742] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:20:15,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:20:15,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-06 21:20:15,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953848251] [2021-10-06 21:20:15,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-06 21:20:15,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:15,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-06 21:20:15,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:20:15,428 INFO L87 Difference]: Start difference. First operand 490 states and 1579 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:15,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:15,605 INFO L93 Difference]: Finished difference Result 490 states and 1569 transitions. [2021-10-06 21:20:15,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 21:20:15,605 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:20:15,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:15,610 INFO L225 Difference]: With dead ends: 490 [2021-10-06 21:20:15,610 INFO L226 Difference]: Without dead ends: 490 [2021-10-06 21:20:15,610 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 78.6ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:20:15,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-10-06 21:20:15,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 490. [2021-10-06 21:20:15,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 3.208588957055215) internal successors, (1569), 489 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:15,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 1569 transitions. [2021-10-06 21:20:15,631 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 1569 transitions. Word has length 16 [2021-10-06 21:20:15,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:15,632 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 1569 transitions. [2021-10-06 21:20:15,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:15,632 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1569 transitions. [2021-10-06 21:20:15,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:20:15,634 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:15,634 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:20:15,650 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 21:20:15,848 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 21:20:15,849 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:20:15,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:15,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1361316251, now seen corresponding path program 6 times [2021-10-06 21:20:15,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:15,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314025719] [2021-10-06 21:20:15,851 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:20:15,851 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:15,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:15,853 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 21:20:15,854 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 21:20:16,119 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:20:16,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:20:16,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:20:16,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:16,864 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:16,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:19,725 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:19,725 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:19,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314025719] [2021-10-06 21:20:19,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [314025719] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:20:19,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:20:19,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-06 21:20:19,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303254403] [2021-10-06 21:20:19,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:20:19,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:19,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:20:19,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=124, Unknown=1, NotChecked=0, Total=182 [2021-10-06 21:20:19,728 INFO L87 Difference]: Start difference. First operand 490 states and 1569 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 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 21:20:21,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:21,915 INFO L93 Difference]: Finished difference Result 884 states and 2490 transitions. [2021-10-06 21:20:21,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-06 21:20:21,917 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 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 16 [2021-10-06 21:20:21,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:21,924 INFO L225 Difference]: With dead ends: 884 [2021-10-06 21:20:21,924 INFO L226 Difference]: Without dead ends: 884 [2021-10-06 21:20:21,924 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3632.7ms TimeCoverageRelationStatistics Valid=189, Invalid=410, Unknown=1, NotChecked=0, Total=600 [2021-10-06 21:20:21,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2021-10-06 21:20:21,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 570. [2021-10-06 21:20:21,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 3.224956063268893) internal successors, (1835), 569 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:21,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1835 transitions. [2021-10-06 21:20:21,951 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1835 transitions. Word has length 16 [2021-10-06 21:20:21,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:21,952 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 1835 transitions. [2021-10-06 21:20:21,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 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 21:20:21,952 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1835 transitions. [2021-10-06 21:20:21,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:20:21,954 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:21,954 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:20:21,968 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 21:20:22,167 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 21:20:22,168 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:20:22,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:22,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1615641505, now seen corresponding path program 7 times [2021-10-06 21:20:22,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:22,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1638612282] [2021-10-06 21:20:22,170 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:20:22,170 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:22,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:22,172 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 21:20:22,173 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 21:20:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:20:22,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:20:22,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:23,092 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:23,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:27,015 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:27,015 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:27,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1638612282] [2021-10-06 21:20:27,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1638612282] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:20:27,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:20:27,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-06 21:20:27,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688700769] [2021-10-06 21:20:27,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:20:27,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:27,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:20:27,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:20:27,017 INFO L87 Difference]: Start difference. First operand 570 states and 1835 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 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 21:20:28,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:28,711 INFO L93 Difference]: Finished difference Result 946 states and 2718 transitions. [2021-10-06 21:20:28,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-06 21:20:28,712 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 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 16 [2021-10-06 21:20:28,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:28,719 INFO L225 Difference]: With dead ends: 946 [2021-10-06 21:20:28,719 INFO L226 Difference]: Without dead ends: 946 [2021-10-06 21:20:28,720 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 4396.5ms TimeCoverageRelationStatistics Valid=155, Invalid=307, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:20:28,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2021-10-06 21:20:28,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 584. [2021-10-06 21:20:28,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 583 states have (on average 3.2452830188679247) internal successors, (1892), 583 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:28,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 1892 transitions. [2021-10-06 21:20:28,747 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 1892 transitions. Word has length 16 [2021-10-06 21:20:28,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:28,748 INFO L470 AbstractCegarLoop]: Abstraction has 584 states and 1892 transitions. [2021-10-06 21:20:28,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 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 21:20:28,748 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 1892 transitions. [2021-10-06 21:20:28,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:20:28,750 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:28,750 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:20:28,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-06 21:20:28,963 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 21:20:28,963 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:20:28,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:28,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1830590573, now seen corresponding path program 8 times [2021-10-06 21:20:28,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:28,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911335704] [2021-10-06 21:20:28,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:20:28,966 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:28,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:28,968 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 21:20:28,969 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 21:20:29,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:20:29,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:20:29,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:20:29,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:29,889 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:29,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:34,791 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:34,792 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:34,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911335704] [2021-10-06 21:20:34,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [911335704] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:20:34,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:20:34,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-06 21:20:34,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635622715] [2021-10-06 21:20:34,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:20:34,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:34,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:20:34,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=121, Unknown=2, NotChecked=0, Total=182 [2021-10-06 21:20:34,795 INFO L87 Difference]: Start difference. First operand 584 states and 1892 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:46,305 WARN L207 SmtUtils]: Spent 8.11 s on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2021-10-06 21:20:50,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:50,719 INFO L93 Difference]: Finished difference Result 764 states and 2325 transitions. [2021-10-06 21:20:50,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-06 21:20:50,721 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have 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 21:20:50,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:50,727 INFO L225 Difference]: With dead ends: 764 [2021-10-06 21:20:50,728 INFO L226 Difference]: Without dead ends: 750 [2021-10-06 21:20:50,728 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 19652.0ms TimeCoverageRelationStatistics Valid=182, Invalid=321, Unknown=3, NotChecked=0, Total=506 [2021-10-06 21:20:50,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2021-10-06 21:20:50,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 578. [2021-10-06 21:20:50,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 577 states have (on average 3.214904679376083) internal successors, (1855), 577 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:50,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1855 transitions. [2021-10-06 21:20:50,754 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1855 transitions. Word has length 16 [2021-10-06 21:20:50,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:50,754 INFO L470 AbstractCegarLoop]: Abstraction has 578 states and 1855 transitions. [2021-10-06 21:20:50,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:50,755 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1855 transitions. [2021-10-06 21:20:50,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:20:50,757 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:50,757 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:20:50,772 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 21:20:50,958 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 21:20:50,958 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:20:50,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:50,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1600988859, now seen corresponding path program 9 times [2021-10-06 21:20:50,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:50,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315140745] [2021-10-06 21:20:50,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:20:50,961 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:50,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:50,962 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 21:20:50,964 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 21:20:51,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:20:51,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:20:51,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:20:51,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:51,790 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:51,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:58,641 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:58,642 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:58,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315140745] [2021-10-06 21:20:58,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315140745] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:20:58,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:20:58,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-06 21:20:58,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146309833] [2021-10-06 21:20:58,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:20:58,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:58,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:20:58,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=121, Unknown=3, NotChecked=0, Total=182 [2021-10-06 21:20:58,644 INFO L87 Difference]: Start difference. First operand 578 states and 1855 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 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 21:21:00,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:00,177 INFO L93 Difference]: Finished difference Result 1020 states and 2929 transitions. [2021-10-06 21:21:00,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 21:21:00,177 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 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 16 [2021-10-06 21:21:00,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:00,183 INFO L225 Difference]: With dead ends: 1020 [2021-10-06 21:21:00,184 INFO L226 Difference]: Without dead ends: 1020 [2021-10-06 21:21:00,184 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 7178.2ms TimeCoverageRelationStatistics Valid=142, Invalid=275, Unknown=3, NotChecked=0, Total=420 [2021-10-06 21:21:00,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2021-10-06 21:21:00,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 614. [2021-10-06 21:21:00,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 613 states have (on average 3.257748776508972) internal successors, (1997), 613 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:00,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 1997 transitions. [2021-10-06 21:21:00,213 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 1997 transitions. Word has length 16 [2021-10-06 21:21:00,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:00,213 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 1997 transitions. [2021-10-06 21:21:00,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 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 21:21:00,214 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 1997 transitions. [2021-10-06 21:21:00,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:21:00,216 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:00,216 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:00,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:00,430 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 21:21:00,430 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:21:00,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:00,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1386039791, now seen corresponding path program 10 times [2021-10-06 21:21:00,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:00,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846968582] [2021-10-06 21:21:00,432 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:21:00,433 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:00,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:00,434 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 21:21:00,436 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 21:21:00,743 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:21:00,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:21:00,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:21:00,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:01,232 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:01,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:08,093 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:08,094 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:08,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846968582] [2021-10-06 21:21:08,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846968582] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:21:08,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:21:08,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-06 21:21:08,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901439778] [2021-10-06 21:21:08,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:21:08,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:08,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:21:08,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=121, Unknown=3, NotChecked=0, Total=182 [2021-10-06 21:21:08,096 INFO L87 Difference]: Start difference. First operand 614 states and 1997 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:21,938 WARN L207 SmtUtils]: Spent 8.15 s on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2021-10-06 21:21:22,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:22,063 INFO L93 Difference]: Finished difference Result 840 states and 2563 transitions. [2021-10-06 21:21:22,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 21:21:22,064 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have 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 21:21:22,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:22,071 INFO L225 Difference]: With dead ends: 840 [2021-10-06 21:21:22,071 INFO L226 Difference]: Without dead ends: 830 [2021-10-06 21:21:22,071 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 19595.1ms TimeCoverageRelationStatistics Valid=148, Invalid=269, Unknown=3, NotChecked=0, Total=420 [2021-10-06 21:21:22,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2021-10-06 21:21:22,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 606. [2021-10-06 21:21:22,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 605 states have (on average 3.231404958677686) internal successors, (1955), 605 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:22,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 1955 transitions. [2021-10-06 21:21:22,096 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 1955 transitions. Word has length 16 [2021-10-06 21:21:22,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:22,096 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 1955 transitions. [2021-10-06 21:21:22,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:22,097 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 1955 transitions. [2021-10-06 21:21:22,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:21:22,099 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:22,099 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:22,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:22,312 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 21:21:22,313 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:21:22,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:22,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1297665023, now seen corresponding path program 11 times [2021-10-06 21:21:22,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:22,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [332712743] [2021-10-06 21:21:22,314 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:21:22,315 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:22,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:22,316 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 21:21:22,352 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 21:21:22,662 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:21:22,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:21:22,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:21:22,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:23,213 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:23,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:28,048 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:28,048 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:28,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [332712743] [2021-10-06 21:21:28,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [332712743] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:21:28,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:21:28,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-06 21:21:28,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935507302] [2021-10-06 21:21:28,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:21:28,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:28,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:21:28,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=124, Unknown=2, NotChecked=0, Total=182 [2021-10-06 21:21:28,051 INFO L87 Difference]: Start difference. First operand 606 states and 1955 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:29,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:29,646 INFO L93 Difference]: Finished difference Result 762 states and 2305 transitions. [2021-10-06 21:21:29,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-06 21:21:29,647 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have 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 21:21:29,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:29,652 INFO L225 Difference]: With dead ends: 762 [2021-10-06 21:21:29,653 INFO L226 Difference]: Without dead ends: 750 [2021-10-06 21:21:29,653 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 5231.2ms TimeCoverageRelationStatistics Valid=125, Invalid=253, Unknown=2, NotChecked=0, Total=380 [2021-10-06 21:21:29,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2021-10-06 21:21:29,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 604. [2021-10-06 21:21:29,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 603 states have (on average 3.2139303482587063) internal successors, (1938), 603 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:29,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 1938 transitions. [2021-10-06 21:21:29,690 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 1938 transitions. Word has length 16 [2021-10-06 21:21:29,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:29,690 INFO L470 AbstractCegarLoop]: Abstraction has 604 states and 1938 transitions. [2021-10-06 21:21:29,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:29,690 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 1938 transitions. [2021-10-06 21:21:29,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:21:29,693 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:29,693 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:29,706 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 21:21:29,905 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 21:21:29,906 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:21:29,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:29,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1762684961, now seen corresponding path program 12 times [2021-10-06 21:21:29,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:29,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [949884113] [2021-10-06 21:21:29,908 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:21:29,909 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:29,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:29,910 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 21:21:29,910 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 21:21:30,320 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:21:30,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:21:30,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:21:30,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:30,729 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:30,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:38,514 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:38,514 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:38,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [949884113] [2021-10-06 21:21:38,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [949884113] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:21:38,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:21:38,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-06 21:21:38,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59175330] [2021-10-06 21:21:38,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:21:38,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:38,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:21:38,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=124, Unknown=1, NotChecked=0, Total=182 [2021-10-06 21:21:38,517 INFO L87 Difference]: Start difference. First operand 604 states and 1938 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 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 21:21:39,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:39,974 INFO L93 Difference]: Finished difference Result 1066 states and 3100 transitions. [2021-10-06 21:21:39,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-06 21:21:39,974 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 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 16 [2021-10-06 21:21:39,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:39,981 INFO L225 Difference]: With dead ends: 1066 [2021-10-06 21:21:39,981 INFO L226 Difference]: Without dead ends: 1066 [2021-10-06 21:21:39,982 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 8007.4ms TimeCoverageRelationStatistics Valid=129, Invalid=250, Unknown=1, NotChecked=0, Total=380 [2021-10-06 21:21:39,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-10-06 21:21:40,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 638. [2021-10-06 21:21:40,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 637 states have (on average 3.2574568288854002) internal successors, (2075), 637 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:40,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 2075 transitions. [2021-10-06 21:21:40,007 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 2075 transitions. Word has length 16 [2021-10-06 21:21:40,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:40,007 INFO L470 AbstractCegarLoop]: Abstraction has 638 states and 2075 transitions. [2021-10-06 21:21:40,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 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 21:21:40,008 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 2075 transitions. [2021-10-06 21:21:40,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:21:40,010 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:40,010 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:40,026 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 21:21:40,226 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 21:21:40,227 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:21:40,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:40,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1977634029, now seen corresponding path program 13 times [2021-10-06 21:21:40,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:40,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1774744669] [2021-10-06 21:21:40,229 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:21:40,230 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:40,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:40,231 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 21:21:40,248 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 21:21:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:21:40,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:21:40,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:40,988 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:40,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:49,957 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:49,958 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:49,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1774744669] [2021-10-06 21:21:49,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1774744669] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:21:49,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:21:49,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-06 21:21:49,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801328545] [2021-10-06 21:21:49,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:21:49,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:49,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:21:49,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=121, Unknown=4, NotChecked=0, Total=182 [2021-10-06 21:21:49,960 INFO L87 Difference]: Start difference. First operand 638 states and 2075 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:58,181 WARN L207 SmtUtils]: Spent 8.12 s on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2021-10-06 21:21:59,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:59,554 INFO L93 Difference]: Finished difference Result 922 states and 2842 transitions. [2021-10-06 21:21:59,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-06 21:21:59,555 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have 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 21:21:59,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:59,560 INFO L225 Difference]: With dead ends: 922 [2021-10-06 21:21:59,560 INFO L226 Difference]: Without dead ends: 914 [2021-10-06 21:21:59,560 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 17165.7ms TimeCoverageRelationStatistics Valid=133, Invalid=243, Unknown=4, NotChecked=0, Total=380 [2021-10-06 21:21:59,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2021-10-06 21:21:59,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 632. [2021-10-06 21:21:59,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 631 states have (on average 3.236133122028526) internal successors, (2042), 631 states have internal predecessors, (2042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:59,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 2042 transitions. [2021-10-06 21:21:59,582 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 2042 transitions. Word has length 16 [2021-10-06 21:21:59,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:59,582 INFO L470 AbstractCegarLoop]: Abstraction has 632 states and 2042 transitions. [2021-10-06 21:21:59,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:59,583 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 2042 transitions. [2021-10-06 21:21:59,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:21:59,585 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:59,585 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:59,605 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 21:21:59,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:21:59,805 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:21:59,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:59,806 INFO L82 PathProgramCache]: Analyzing trace with hash -366371547, now seen corresponding path program 14 times [2021-10-06 21:21:59,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:59,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [337563422] [2021-10-06 21:21:59,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:21:59,807 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:59,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:59,809 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:21:59,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-06 21:22:00,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:22:00,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:22:00,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:22:00,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:22:00,622 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:00,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:22:07,425 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:07,426 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:22:07,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [337563422] [2021-10-06 21:22:07,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [337563422] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:22:07,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:22:07,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-06 21:22:07,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327805438] [2021-10-06 21:22:07,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:22:07,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:22:07,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:22:07,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=124, Unknown=3, NotChecked=0, Total=182 [2021-10-06 21:22:07,428 INFO L87 Difference]: Start difference. First operand 632 states and 2042 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:15,969 WARN L207 SmtUtils]: Spent 8.35 s on a formula simplification. DAG size of input: 25 DAG size of output: 22 [2021-10-06 21:22:18,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:22:18,050 INFO L93 Difference]: Finished difference Result 842 states and 2539 transitions. [2021-10-06 21:22:18,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:22:18,051 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have 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 21:22:18,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:22:18,055 INFO L225 Difference]: With dead ends: 842 [2021-10-06 21:22:18,055 INFO L226 Difference]: Without dead ends: 834 [2021-10-06 21:22:18,056 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 15677.8ms TimeCoverageRelationStatistics Valid=124, Invalid=253, Unknown=3, NotChecked=0, Total=380 [2021-10-06 21:22:18,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2021-10-06 21:22:18,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 630. [2021-10-06 21:22:18,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 629 states have (on average 3.2257551669316373) internal successors, (2029), 629 states have internal predecessors, (2029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:18,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 2029 transitions. [2021-10-06 21:22:18,073 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 2029 transitions. Word has length 16 [2021-10-06 21:22:18,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:22:18,073 INFO L470 AbstractCegarLoop]: Abstraction has 630 states and 2029 transitions. [2021-10-06 21:22:18,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:18,074 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 2029 transitions. [2021-10-06 21:22:18,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:22:18,076 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:22:18,076 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:22:18,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-06 21:22:18,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:22:18,290 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:22:18,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:22:18,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1956842157, now seen corresponding path program 15 times [2021-10-06 21:22:18,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:22:18,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283642056] [2021-10-06 21:22:18,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:22:18,292 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:22:18,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:22:18,294 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:22:18,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-06 21:22:18,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:22:18,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:22:18,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:22:18,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:22:19,125 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:19,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:22:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:23,924 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:22:23,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283642056] [2021-10-06 21:22:23,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283642056] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:22:23,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:22:23,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-06 21:22:23,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213363291] [2021-10-06 21:22:23,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:22:23,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:22:23,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:22:23,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=126, Unknown=2, NotChecked=0, Total=182 [2021-10-06 21:22:23,927 INFO L87 Difference]: Start difference. First operand 630 states and 2029 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:27,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:22:27,534 INFO L93 Difference]: Finished difference Result 786 states and 2363 transitions. [2021-10-06 21:22:27,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-06 21:22:27,535 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have 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 21:22:27,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:22:27,541 INFO L225 Difference]: With dead ends: 786 [2021-10-06 21:22:27,541 INFO L226 Difference]: Without dead ends: 774 [2021-10-06 21:22:27,542 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 6944.2ms TimeCoverageRelationStatistics Valid=93, Invalid=211, Unknown=2, NotChecked=0, Total=306 [2021-10-06 21:22:27,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-10-06 21:22:27,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 636. [2021-10-06 21:22:27,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 635 states have (on average 3.206299212598425) internal successors, (2036), 635 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:27,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 2036 transitions. [2021-10-06 21:22:27,562 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 2036 transitions. Word has length 16 [2021-10-06 21:22:27,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:22:27,562 INFO L470 AbstractCegarLoop]: Abstraction has 636 states and 2036 transitions. [2021-10-06 21:22:27,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:27,562 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 2036 transitions. [2021-10-06 21:22:27,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:22:27,565 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:22:27,565 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:22:27,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-10-06 21:22:27,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:22:27,779 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:22:27,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:22:27,779 INFO L82 PathProgramCache]: Analyzing trace with hash 868715084, now seen corresponding path program 16 times [2021-10-06 21:22:27,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:22:27,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1949320013] [2021-10-06 21:22:27,780 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:22:27,781 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:22:27,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:22:27,782 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:22:27,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-06 21:22:28,236 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:22:28,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:22:28,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:22:28,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:22:29,047 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:29,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:22:30,696 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:30,696 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:22:30,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1949320013] [2021-10-06 21:22:30,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1949320013] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:22:30,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:22:30,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-06 21:22:30,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17209688] [2021-10-06 21:22:30,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:22:30,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:22:30,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:22:30,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:22:30,698 INFO L87 Difference]: Start difference. First operand 636 states and 2036 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 17 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 21:22:34,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:22:34,305 INFO L93 Difference]: Finished difference Result 1116 states and 3219 transitions. [2021-10-06 21:22:34,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-06 21:22:34,306 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 17 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 17 [2021-10-06 21:22:34,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:22:34,314 INFO L225 Difference]: With dead ends: 1116 [2021-10-06 21:22:34,314 INFO L226 Difference]: Without dead ends: 1116 [2021-10-06 21:22:34,315 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2916.2ms TimeCoverageRelationStatistics Valid=226, Invalid=476, Unknown=0, NotChecked=0, Total=702 [2021-10-06 21:22:34,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-10-06 21:22:34,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 706. [2021-10-06 21:22:34,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 705 states have (on average 3.2666666666666666) internal successors, (2303), 705 states have internal predecessors, (2303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:34,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2303 transitions. [2021-10-06 21:22:34,340 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2303 transitions. Word has length 17 [2021-10-06 21:22:34,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:22:34,340 INFO L470 AbstractCegarLoop]: Abstraction has 706 states and 2303 transitions. [2021-10-06 21:22:34,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 17 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 21:22:34,340 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2303 transitions. [2021-10-06 21:22:34,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:22:34,343 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:22:34,343 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:22:34,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-06 21:22:34,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:22:34,558 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:22:34,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:22:34,558 INFO L82 PathProgramCache]: Analyzing trace with hash -2029938798, now seen corresponding path program 17 times [2021-10-06 21:22:34,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:22:34,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [601021749] [2021-10-06 21:22:34,560 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:22:34,560 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:22:34,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:22:34,561 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:22:34,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-06 21:22:35,052 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 21:22:35,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:22:35,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:22:35,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:22:35,982 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:35,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:22:39,606 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:39,606 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:22:39,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [601021749] [2021-10-06 21:22:39,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [601021749] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:22:39,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:22:39,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-06 21:22:39,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348057798] [2021-10-06 21:22:39,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:22:39,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:22:39,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:22:39,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=159, Unknown=1, NotChecked=0, Total=210 [2021-10-06 21:22:39,608 INFO L87 Difference]: Start difference. First operand 706 states and 2303 transitions. Second operand has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:42,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:22:42,265 INFO L93 Difference]: Finished difference Result 879 states and 2628 transitions. [2021-10-06 21:22:42,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 21:22:42,266 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:22:42,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:22:42,272 INFO L225 Difference]: With dead ends: 879 [2021-10-06 21:22:42,272 INFO L226 Difference]: Without dead ends: 868 [2021-10-06 21:22:42,274 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 4716.8ms TimeCoverageRelationStatistics Valid=200, Invalid=611, Unknown=1, NotChecked=0, Total=812 [2021-10-06 21:22:42,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2021-10-06 21:22:42,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 662. [2021-10-06 21:22:42,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 3.239031770045386) internal successors, (2141), 661 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:42,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 2141 transitions. [2021-10-06 21:22:42,296 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 2141 transitions. Word has length 17 [2021-10-06 21:22:42,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:22:42,297 INFO L470 AbstractCegarLoop]: Abstraction has 662 states and 2141 transitions. [2021-10-06 21:22:42,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:42,297 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 2141 transitions. [2021-10-06 21:22:42,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:22:42,301 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:22:42,301 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:22:42,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-06 21:22:42,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:22:42,515 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:22:42,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:22:42,516 INFO L82 PathProgramCache]: Analyzing trace with hash -981231128, now seen corresponding path program 18 times [2021-10-06 21:22:42,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:22:42,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611407595] [2021-10-06 21:22:42,517 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:22:42,518 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:22:42,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:22:42,519 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:22:42,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-06 21:22:43,086 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:22:43,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:22:43,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:22:43,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:22:44,046 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:44,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:22:45,419 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:45,419 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:22:45,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611407595] [2021-10-06 21:22:45,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1611407595] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:22:45,419 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:22:45,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-06 21:22:45,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445732289] [2021-10-06 21:22:45,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:22:45,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:22:45,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:22:45,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:22:45,421 INFO L87 Difference]: Start difference. First operand 662 states and 2141 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:47,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:22:47,102 INFO L93 Difference]: Finished difference Result 898 states and 2688 transitions. [2021-10-06 21:22:47,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-06 21:22:47,103 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:22:47,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:22:47,107 INFO L225 Difference]: With dead ends: 898 [2021-10-06 21:22:47,107 INFO L226 Difference]: Without dead ends: 884 [2021-10-06 21:22:47,108 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1926.7ms TimeCoverageRelationStatistics Valid=128, Invalid=522, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:22:47,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2021-10-06 21:22:47,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 394. [2021-10-06 21:22:47,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 2.89058524173028) internal successors, (1136), 393 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:47,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1136 transitions. [2021-10-06 21:22:47,122 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1136 transitions. Word has length 17 [2021-10-06 21:22:47,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:22:47,123 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 1136 transitions. [2021-10-06 21:22:47,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:47,123 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1136 transitions. [2021-10-06 21:22:47,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:22:47,124 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:22:47,124 INFO L512 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:22:47,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-06 21:22:47,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:22:47,339 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:22:47,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:22:47,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1605306751, now seen corresponding path program 19 times [2021-10-06 21:22:47,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:22:47,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142579127] [2021-10-06 21:22:47,341 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:22:47,341 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:22:47,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:22:47,342 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:22:47,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-06 21:22:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:22:47,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:22:47,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:22:48,621 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 21:22:48,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:22:50,426 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:50,426 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:22:50,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142579127] [2021-10-06 21:22:50,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142579127] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:22:50,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:22:50,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 16 [2021-10-06 21:22:50,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364320286] [2021-10-06 21:22:50,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 21:22:50,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:22:50,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 21:22:50,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:22:50,429 INFO L87 Difference]: Start difference. First operand 394 states and 1136 transitions. Second operand has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 16 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 21:22:56,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:22:56,208 INFO L93 Difference]: Finished difference Result 612 states and 1588 transitions. [2021-10-06 21:22:56,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-06 21:22:56,209 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 16 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 18 [2021-10-06 21:22:56,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:22:56,212 INFO L225 Difference]: With dead ends: 612 [2021-10-06 21:22:56,212 INFO L226 Difference]: Without dead ends: 612 [2021-10-06 21:22:56,212 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 5646.1ms TimeCoverageRelationStatistics Valid=309, Invalid=747, Unknown=0, NotChecked=0, Total=1056 [2021-10-06 21:22:56,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-10-06 21:22:56,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 358. [2021-10-06 21:22:56,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 2.834733893557423) internal successors, (1012), 357 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:56,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 1012 transitions. [2021-10-06 21:22:56,224 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 1012 transitions. Word has length 18 [2021-10-06 21:22:56,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:22:56,224 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 1012 transitions. [2021-10-06 21:22:56,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 16 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 21:22:56,225 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 1012 transitions. [2021-10-06 21:22:56,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:22:56,226 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:22:56,226 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:22:56,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-06 21:22:56,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:22:56,440 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:22:56,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:22:56,441 INFO L82 PathProgramCache]: Analyzing trace with hash 233974149, now seen corresponding path program 20 times [2021-10-06 21:22:56,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:22:56,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817367894] [2021-10-06 21:22:56,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:22:56,442 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:22:56,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:22:56,443 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:22:56,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-06 21:22:57,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:22:57,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:22:57,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:22:57,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:22:57,760 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:22:57,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:22:59,093 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:59,093 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:22:59,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817367894] [2021-10-06 21:22:59,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [817367894] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:22:59,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:22:59,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10] total 15 [2021-10-06 21:22:59,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748989209] [2021-10-06 21:22:59,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:22:59,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:22:59,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:22:59,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:22:59,096 INFO L87 Difference]: Start difference. First operand 358 states and 1012 transitions. Second operand has 16 states, 16 states have (on average 2.0) internal successors, (32), 15 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 21:23:05,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:05,752 INFO L93 Difference]: Finished difference Result 684 states and 1693 transitions. [2021-10-06 21:23:05,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-06 21:23:05,754 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 15 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 18 [2021-10-06 21:23:05,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:05,759 INFO L225 Difference]: With dead ends: 684 [2021-10-06 21:23:05,759 INFO L226 Difference]: Without dead ends: 684 [2021-10-06 21:23:05,759 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 5670.5ms TimeCoverageRelationStatistics Valid=325, Invalid=1315, Unknown=0, NotChecked=0, Total=1640 [2021-10-06 21:23:05,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2021-10-06 21:23:05,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 434. [2021-10-06 21:23:05,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 2.8221709006928406) internal successors, (1222), 433 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:05,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1222 transitions. [2021-10-06 21:23:05,773 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1222 transitions. Word has length 18 [2021-10-06 21:23:05,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:05,773 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 1222 transitions. [2021-10-06 21:23:05,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 15 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 21:23:05,773 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1222 transitions. [2021-10-06 21:23:05,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:23:05,775 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:05,775 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:05,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2021-10-06 21:23:05,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:05,989 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:23:05,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:05,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1493436101, now seen corresponding path program 21 times [2021-10-06 21:23:05,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:05,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125188941] [2021-10-06 21:23:05,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:23:05,992 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:05,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:05,993 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:05,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-06 21:23:06,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:23:06,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:06,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:23:06,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:07,441 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:23:07,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:09,076 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:09,077 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:09,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125188941] [2021-10-06 21:23:09,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125188941] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:23:09,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:23:09,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 17 [2021-10-06 21:23:09,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169974890] [2021-10-06 21:23:09,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:23:09,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:09,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:23:09,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:23:09,079 INFO L87 Difference]: Start difference. First operand 434 states and 1222 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:40,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:40,303 INFO L93 Difference]: Finished difference Result 1218 states and 2937 transitions. [2021-10-06 21:23:40,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-10-06 21:23:40,304 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:23:40,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:40,309 INFO L225 Difference]: With dead ends: 1218 [2021-10-06 21:23:40,309 INFO L226 Difference]: Without dead ends: 1218 [2021-10-06 21:23:40,311 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1095 ImplicationChecksByTransitivity, 21849.7ms TimeCoverageRelationStatistics Valid=819, Invalid=3341, Unknown=0, NotChecked=0, Total=4160 [2021-10-06 21:23:40,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2021-10-06 21:23:40,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 460. [2021-10-06 21:23:40,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 2.8562091503267975) internal successors, (1311), 459 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:40,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 1311 transitions. [2021-10-06 21:23:40,330 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 1311 transitions. Word has length 18 [2021-10-06 21:23:40,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:40,330 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 1311 transitions. [2021-10-06 21:23:40,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:40,331 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 1311 transitions. [2021-10-06 21:23:40,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:23:40,332 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:40,332 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:40,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:40,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:40,547 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:23:40,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:40,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1219956069, now seen corresponding path program 22 times [2021-10-06 21:23:40,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:40,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762316006] [2021-10-06 21:23:40,549 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:23:40,550 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:40,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:40,551 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:40,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-06 21:23:41,169 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:23:41,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:41,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:23:41,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:42,297 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:42,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:44,031 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:44,032 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:44,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1762316006] [2021-10-06 21:23:44,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1762316006] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:23:44,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:23:44,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-06 21:23:44,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143216405] [2021-10-06 21:23:44,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:23:44,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:44,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:23:44,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:23:44,042 INFO L87 Difference]: Start difference. First operand 460 states and 1311 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:38,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:24:38,226 INFO L93 Difference]: Finished difference Result 1318 states and 3212 transitions. [2021-10-06 21:24:38,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-06 21:24:38,228 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:24:38,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:24:38,231 INFO L225 Difference]: With dead ends: 1318 [2021-10-06 21:24:38,231 INFO L226 Difference]: Without dead ends: 1318 [2021-10-06 21:24:38,232 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 36432.0ms TimeCoverageRelationStatistics Valid=554, Invalid=1896, Unknown=0, NotChecked=0, Total=2450 [2021-10-06 21:24:38,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2021-10-06 21:24:38,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 524. [2021-10-06 21:24:38,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 523 states have (on average 2.9961759082217974) internal successors, (1567), 523 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:38,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 1567 transitions. [2021-10-06 21:24:38,247 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 1567 transitions. Word has length 18 [2021-10-06 21:24:38,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:24:38,248 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 1567 transitions. [2021-10-06 21:24:38,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:38,248 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 1567 transitions. [2021-10-06 21:24:38,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:24:38,249 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:24:38,250 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:24:38,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-06 21:24:38,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:24:38,451 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:24:38,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:24:38,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1870237719, now seen corresponding path program 23 times [2021-10-06 21:24:38,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:24:38,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710867525] [2021-10-06 21:24:38,453 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:24:38,453 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:24:38,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:24:38,454 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:24:38,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-06 21:24:39,132 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 21:24:39,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:24:39,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:24:39,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:24:39,471 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:24:39,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:24:42,209 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:24:42,209 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:24:42,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710867525] [2021-10-06 21:24:42,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710867525] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:24:42,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:24:42,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-06 21:24:42,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537003137] [2021-10-06 21:24:42,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:24:42,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:24:42,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:24:42,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=64, Unknown=1, NotChecked=0, Total=90 [2021-10-06 21:24:42,212 INFO L87 Difference]: Start difference. First operand 524 states and 1567 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:54,642 WARN L207 SmtUtils]: Spent 6.09 s on a formula simplification that was a NOOP. DAG size: 21 [2021-10-06 21:24:54,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:24:54,969 INFO L93 Difference]: Finished difference Result 912 states and 2555 transitions. [2021-10-06 21:24:54,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-06 21:24:54,970 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 21:24:54,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:24:54,973 INFO L225 Difference]: With dead ends: 912 [2021-10-06 21:24:54,973 INFO L226 Difference]: Without dead ends: 902 [2021-10-06 21:24:54,973 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 14731.3ms TimeCoverageRelationStatistics Valid=66, Invalid=172, Unknown=2, NotChecked=0, Total=240 [2021-10-06 21:24:54,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2021-10-06 21:24:54,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 588. [2021-10-06 21:24:54,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 587 states have (on average 2.9250425894378194) internal successors, (1717), 587 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:54,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 1717 transitions. [2021-10-06 21:24:54,987 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 1717 transitions. Word has length 18 [2021-10-06 21:24:54,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:24:54,988 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 1717 transitions. [2021-10-06 21:24:54,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:54,988 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 1717 transitions. [2021-10-06 21:24:54,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:24:54,990 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:24:54,990 INFO L512 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:24:55,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-06 21:24:55,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:24:55,205 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:24:55,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:24:55,206 INFO L82 PathProgramCache]: Analyzing trace with hash 677591469, now seen corresponding path program 4 times [2021-10-06 21:24:55,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:24:55,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1866399391] [2021-10-06 21:24:55,207 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:24:55,207 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:24:55,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:24:55,210 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:24:55,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-06 21:24:55,893 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:24:55,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:24:55,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-06 21:24:55,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:24:56,895 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:56,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:24:59,723 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 37 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:59,723 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:24:59,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1866399391] [2021-10-06 21:24:59,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1866399391] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:24:59,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:24:59,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-06 21:24:59,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057598783] [2021-10-06 21:24:59,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:24:59,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:24:59,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:24:59,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=287, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:24:59,726 INFO L87 Difference]: Start difference. First operand 588 states and 1717 transitions. Second operand has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:01,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:25:01,168 INFO L93 Difference]: Finished difference Result 630 states and 1785 transitions. [2021-10-06 21:25:01,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-06 21:25:01,169 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:25:01,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:25:01,172 INFO L225 Difference]: With dead ends: 630 [2021-10-06 21:25:01,172 INFO L226 Difference]: Without dead ends: 630 [2021-10-06 21:25:01,172 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2523.2ms TimeCoverageRelationStatistics Valid=209, Invalid=343, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:25:01,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2021-10-06 21:25:01,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 584. [2021-10-06 21:25:01,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 583 states have (on average 2.926243567753002) internal successors, (1706), 583 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:01,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 1706 transitions. [2021-10-06 21:25:01,189 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 1706 transitions. Word has length 20 [2021-10-06 21:25:01,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:25:01,189 INFO L470 AbstractCegarLoop]: Abstraction has 584 states and 1706 transitions. [2021-10-06 21:25:01,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:01,189 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 1706 transitions. [2021-10-06 21:25:01,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:25:01,191 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:25:01,191 INFO L512 BasicCegarLoop]: trace histogram [9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:25:01,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-06 21:25:01,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:25:01,402 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:25:01,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:25:01,403 INFO L82 PathProgramCache]: Analyzing trace with hash -59755749, now seen corresponding path program 24 times [2021-10-06 21:25:01,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:25:01,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1356835144] [2021-10-06 21:25:01,404 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:25:01,404 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:25:01,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:25:01,405 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:25:01,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-06 21:25:02,232 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-10-06 21:25:02,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:25:02,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:25:02,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:25:02,661 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:25:02,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:25:03,798 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:25:03,799 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:25:03,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1356835144] [2021-10-06 21:25:03,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1356835144] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:25:03,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:25:03,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-10-06 21:25:03,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743757534] [2021-10-06 21:25:03,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-06 21:25:03,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:25:03,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-06 21:25:03,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:25:03,802 INFO L87 Difference]: Start difference. First operand 584 states and 1706 transitions. Second operand has 24 states, 24 states have (on average 1.75) internal successors, (42), 23 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:07,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:25:07,924 INFO L93 Difference]: Finished difference Result 1106 states and 3002 transitions. [2021-10-06 21:25:07,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-06 21:25:07,925 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.75) internal successors, (42), 23 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-06 21:25:07,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:25:07,928 INFO L225 Difference]: With dead ends: 1106 [2021-10-06 21:25:07,929 INFO L226 Difference]: Without dead ends: 1106 [2021-10-06 21:25:07,929 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 3954.6ms TimeCoverageRelationStatistics Valid=346, Invalid=1460, Unknown=0, NotChecked=0, Total=1806 [2021-10-06 21:25:07,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2021-10-06 21:25:07,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 896. [2021-10-06 21:25:07,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 895 states have (on average 2.96536312849162) internal successors, (2654), 895 states have internal predecessors, (2654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:07,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2654 transitions. [2021-10-06 21:25:07,949 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2654 transitions. Word has length 22 [2021-10-06 21:25:07,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:25:07,949 INFO L470 AbstractCegarLoop]: Abstraction has 896 states and 2654 transitions. [2021-10-06 21:25:07,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.75) internal successors, (42), 23 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:07,949 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2654 transitions. [2021-10-06 21:25:07,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:25:07,951 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:25:07,951 INFO L512 BasicCegarLoop]: trace histogram [9, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:25:07,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2021-10-06 21:25:08,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:25:08,165 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:25:08,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:25:08,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1426802593, now seen corresponding path program 25 times [2021-10-06 21:25:08,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:25:08,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936213395] [2021-10-06 21:25:08,167 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:25:08,168 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:25:08,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:25:08,169 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:25:08,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-06 21:25:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:25:08,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:25:08,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:25:10,403 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-06 21:25:10,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:25:14,552 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:25:14,552 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:25:14,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936213395] [2021-10-06 21:25:14,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936213395] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:25:14,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:25:14,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 16] total 26 [2021-10-06 21:25:14,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784136053] [2021-10-06 21:25:14,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-06 21:25:14,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:25:14,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-06 21:25:14,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=514, Unknown=0, NotChecked=0, Total=702 [2021-10-06 21:25:14,555 INFO L87 Difference]: Start difference. First operand 896 states and 2654 transitions. Second operand has 27 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 26 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:54,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:25:54,093 INFO L93 Difference]: Finished difference Result 1478 states and 3974 transitions. [2021-10-06 21:25:54,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-06 21:25:54,095 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 26 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:25:54,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:25:54,098 INFO L225 Difference]: With dead ends: 1478 [2021-10-06 21:25:54,098 INFO L226 Difference]: Without dead ends: 1478 [2021-10-06 21:25:54,100 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 38987.9ms TimeCoverageRelationStatistics Valid=1177, Invalid=3515, Unknown=0, NotChecked=0, Total=4692 [2021-10-06 21:25:54,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2021-10-06 21:25:54,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 962. [2021-10-06 21:25:54,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 962 states, 961 states have (on average 2.9625390218522374) internal successors, (2847), 961 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:54,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 2847 transitions. [2021-10-06 21:25:54,117 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 2847 transitions. Word has length 24 [2021-10-06 21:25:54,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:25:54,117 INFO L470 AbstractCegarLoop]: Abstraction has 962 states and 2847 transitions. [2021-10-06 21:25:54,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 26 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:54,118 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 2847 transitions. [2021-10-06 21:25:54,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:25:54,120 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:25:54,120 INFO L512 BasicCegarLoop]: trace histogram [9, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:25:54,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-06 21:25:54,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:25:54,334 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:25:54,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:25:54,335 INFO L82 PathProgramCache]: Analyzing trace with hash 334601275, now seen corresponding path program 26 times [2021-10-06 21:25:54,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:25:54,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209507064] [2021-10-06 21:25:54,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:25:54,336 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:25:54,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:25:54,338 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:25:54,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-06 21:25:55,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:25:55,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:25:55,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:25:55,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:25:56,913 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:25:56,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:01,503 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 13 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:01,503 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:01,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209507064] [2021-10-06 21:26:01,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209507064] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:01,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:01,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2021-10-06 21:26:01,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064606590] [2021-10-06 21:26:01,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-06 21:26:01,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:01,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-06 21:26:01,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=612, Unknown=0, NotChecked=0, Total=870 [2021-10-06 21:26:01,505 INFO L87 Difference]: Start difference. First operand 962 states and 2847 transitions. Second operand has 30 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 29 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:23,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:23,057 INFO L93 Difference]: Finished difference Result 2410 states and 6118 transitions. [2021-10-06 21:26:23,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-10-06 21:26:23,059 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 29 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:26:23,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:23,063 INFO L225 Difference]: With dead ends: 2410 [2021-10-06 21:26:23,063 INFO L226 Difference]: Without dead ends: 2410 [2021-10-06 21:26:23,065 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1001 ImplicationChecksByTransitivity, 17182.8ms TimeCoverageRelationStatistics Valid=1709, Invalid=4143, Unknown=0, NotChecked=0, Total=5852 [2021-10-06 21:26:23,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2410 states. [2021-10-06 21:26:23,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2410 to 1046. [2021-10-06 21:26:23,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 1045 states have (on average 2.9311004784688994) internal successors, (3063), 1045 states have internal predecessors, (3063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:23,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 3063 transitions. [2021-10-06 21:26:23,087 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 3063 transitions. Word has length 24 [2021-10-06 21:26:23,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:23,087 INFO L470 AbstractCegarLoop]: Abstraction has 1046 states and 3063 transitions. [2021-10-06 21:26:23,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 29 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:23,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 3063 transitions. [2021-10-06 21:26:23,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:26:23,089 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:23,089 INFO L512 BasicCegarLoop]: trace histogram [9, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:23,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:23,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:26:23,290 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:26:23,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:23,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1309960539, now seen corresponding path program 27 times [2021-10-06 21:26:23,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:23,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1355572789] [2021-10-06 21:26:23,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:26:23,292 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:23,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:23,293 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:26:23,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-06 21:26:24,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-06 21:26:24,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:24,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:26:24,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:25,924 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 6 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:26:25,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:30,615 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:30,615 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:30,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1355572789] [2021-10-06 21:26:30,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1355572789] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:30,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:30,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 29 [2021-10-06 21:26:30,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512973338] [2021-10-06 21:26:30,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-06 21:26:30,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:30,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-06 21:26:30,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=617, Unknown=0, NotChecked=0, Total=870 [2021-10-06 21:26:30,618 INFO L87 Difference]: Start difference. First operand 1046 states and 3063 transitions. Second operand has 30 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 29 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:04,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:04,803 INFO L93 Difference]: Finished difference Result 2912 states and 7705 transitions. [2021-10-06 21:27:04,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-06 21:27:04,805 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 29 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:27:04,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:04,814 INFO L225 Difference]: With dead ends: 2912 [2021-10-06 21:27:04,815 INFO L226 Difference]: Without dead ends: 2912 [2021-10-06 21:27:04,816 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 29625.0ms TimeCoverageRelationStatistics Valid=1169, Invalid=2863, Unknown=0, NotChecked=0, Total=4032 [2021-10-06 21:27:04,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2021-10-06 21:27:04,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 1152. [2021-10-06 21:27:04,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 1151 states have (on average 2.9782797567332753) internal successors, (3428), 1151 states have internal predecessors, (3428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:04,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 3428 transitions. [2021-10-06 21:27:04,862 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 3428 transitions. Word has length 24 [2021-10-06 21:27:04,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:04,862 INFO L470 AbstractCegarLoop]: Abstraction has 1152 states and 3428 transitions. [2021-10-06 21:27:04,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 29 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:04,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 3428 transitions. [2021-10-06 21:27:04,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:27:04,865 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:04,865 INFO L512 BasicCegarLoop]: trace histogram [9, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:04,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2021-10-06 21:27:05,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:27:05,078 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:27:05,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:05,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1286169697, now seen corresponding path program 28 times [2021-10-06 21:27:05,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:05,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [610956051] [2021-10-06 21:27:05,080 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:27:05,080 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:05,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:05,081 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:27:05,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-06 21:27:05,988 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:27:05,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:05,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:27:05,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:07,638 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 4 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:07,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:12,292 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:12,292 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:12,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [610956051] [2021-10-06 21:27:12,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [610956051] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:12,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:12,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 30 [2021-10-06 21:27:12,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200283454] [2021-10-06 21:27:12,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-06 21:27:12,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:12,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-06 21:27:12,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=659, Unknown=0, NotChecked=0, Total=930 [2021-10-06 21:27:12,294 INFO L87 Difference]: Start difference. First operand 1152 states and 3428 transitions. Second operand has 31 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 30 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:23,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:23,089 INFO L93 Difference]: Finished difference Result 3098 states and 8310 transitions. [2021-10-06 21:27:23,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-06 21:27:23,091 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 30 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:27:23,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:23,101 INFO L225 Difference]: With dead ends: 3098 [2021-10-06 21:27:23,101 INFO L226 Difference]: Without dead ends: 3098 [2021-10-06 21:27:23,102 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 9698.8ms TimeCoverageRelationStatistics Valid=569, Invalid=1237, Unknown=0, NotChecked=0, Total=1806 [2021-10-06 21:27:23,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3098 states. [2021-10-06 21:27:23,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3098 to 1270. [2021-10-06 21:27:23,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 3.0583136327817178) internal successors, (3881), 1269 states have internal predecessors, (3881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:23,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 3881 transitions. [2021-10-06 21:27:23,159 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 3881 transitions. Word has length 24 [2021-10-06 21:27:23,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:23,159 INFO L470 AbstractCegarLoop]: Abstraction has 1270 states and 3881 transitions. [2021-10-06 21:27:23,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 30 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:23,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 3881 transitions. [2021-10-06 21:27:23,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:27:23,163 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:23,163 INFO L512 BasicCegarLoop]: trace histogram [9, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:23,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:23,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:27:23,377 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:27:23,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:23,378 INFO L82 PathProgramCache]: Analyzing trace with hash -799493843, now seen corresponding path program 29 times [2021-10-06 21:27:23,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:23,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [945879968] [2021-10-06 21:27:23,379 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:27:23,379 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:23,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:23,380 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:27:23,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-06 21:27:24,460 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-06 21:27:24,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:24,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:27:24,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:26,044 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 6 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:27:26,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:30,826 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:30,826 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:30,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [945879968] [2021-10-06 21:27:30,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [945879968] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:30,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:30,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 29 [2021-10-06 21:27:30,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845139710] [2021-10-06 21:27:30,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-06 21:27:30,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:30,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-06 21:27:30,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=621, Unknown=0, NotChecked=0, Total=870 [2021-10-06 21:27:30,829 INFO L87 Difference]: Start difference. First operand 1270 states and 3881 transitions. Second operand has 30 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 29 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:11,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:11,804 INFO L93 Difference]: Finished difference Result 2750 states and 7789 transitions. [2021-10-06 21:28:11,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-10-06 21:28:11,806 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 29 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:28:11,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:11,811 INFO L225 Difference]: With dead ends: 2750 [2021-10-06 21:28:11,811 INFO L226 Difference]: Without dead ends: 2750 [2021-10-06 21:28:11,813 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 896 ImplicationChecksByTransitivity, 33937.4ms TimeCoverageRelationStatistics Valid=1352, Invalid=3618, Unknown=0, NotChecked=0, Total=4970 [2021-10-06 21:28:11,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2750 states. [2021-10-06 21:28:11,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2750 to 1408. [2021-10-06 21:28:11,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1408 states, 1407 states have (on average 3.1030561478322674) internal successors, (4366), 1407 states have internal predecessors, (4366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:11,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 4366 transitions. [2021-10-06 21:28:11,851 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 4366 transitions. Word has length 24 [2021-10-06 21:28:11,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:11,852 INFO L470 AbstractCegarLoop]: Abstraction has 1408 states and 4366 transitions. [2021-10-06 21:28:11,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 29 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:11,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 4366 transitions. [2021-10-06 21:28:11,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:28:11,854 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:11,855 INFO L512 BasicCegarLoop]: trace histogram [9, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:11,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:12,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:12,059 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:28:12,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:12,060 INFO L82 PathProgramCache]: Analyzing trace with hash 813745667, now seen corresponding path program 30 times [2021-10-06 21:28:12,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:12,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1577305998] [2021-10-06 21:28:12,061 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:28:12,061 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:12,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:12,062 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:12,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-06 21:28:13,233 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-06 21:28:13,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:13,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:28:13,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:15,201 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 4 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:15,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:20,337 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:20,337 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:20,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1577305998] [2021-10-06 21:28:20,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1577305998] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:20,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:20,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 30 [2021-10-06 21:28:20,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871130239] [2021-10-06 21:28:20,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-06 21:28:20,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:20,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-06 21:28:20,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=664, Unknown=0, NotChecked=0, Total=930 [2021-10-06 21:28:20,341 INFO L87 Difference]: Start difference. First operand 1408 states and 4366 transitions. Second operand has 31 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 30 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:14,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:14,058 INFO L93 Difference]: Finished difference Result 3444 states and 9312 transitions. [2021-10-06 21:29:14,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-10-06 21:29:14,060 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 30 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:29:14,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:14,066 INFO L225 Difference]: With dead ends: 3444 [2021-10-06 21:29:14,066 INFO L226 Difference]: Without dead ends: 3444 [2021-10-06 21:29:14,068 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1703 ImplicationChecksByTransitivity, 50037.8ms TimeCoverageRelationStatistics Valid=2049, Invalid=5783, Unknown=0, NotChecked=0, Total=7832 [2021-10-06 21:29:14,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3444 states. [2021-10-06 21:29:14,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3444 to 1520. [2021-10-06 21:29:14,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 1519 states have (on average 3.119157340355497) internal successors, (4738), 1519 states have internal predecessors, (4738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:14,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 4738 transitions. [2021-10-06 21:29:14,103 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 4738 transitions. Word has length 24 [2021-10-06 21:29:14,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:14,103 INFO L470 AbstractCegarLoop]: Abstraction has 1520 states and 4738 transitions. [2021-10-06 21:29:14,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 30 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:14,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 4738 transitions. [2021-10-06 21:29:14,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:29:14,106 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:14,107 INFO L512 BasicCegarLoop]: trace histogram [9, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:14,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:14,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:29:14,307 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:14,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:14,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1980795219, now seen corresponding path program 31 times [2021-10-06 21:29:14,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:14,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540620183] [2021-10-06 21:29:14,310 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:29:14,310 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:14,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:14,311 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:29:14,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-06 21:29:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:29:15,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:29:15,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:17,169 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 9 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:17,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:22,163 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 20 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:22,163 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:22,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540620183] [2021-10-06 21:29:22,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540620183] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:22,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:22,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2021-10-06 21:29:22,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886952395] [2021-10-06 21:29:22,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-06 21:29:22,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:22,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-06 21:29:22,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=601, Unknown=0, NotChecked=0, Total=870 [2021-10-06 21:29:22,165 INFO L87 Difference]: Start difference. First operand 1520 states and 4738 transitions. Second operand has 30 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 29 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:43,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:43,358 INFO L93 Difference]: Finished difference Result 4156 states and 12311 transitions. [2021-10-06 21:29:43,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-06 21:29:43,359 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 29 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:29:43,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:43,367 INFO L225 Difference]: With dead ends: 4156 [2021-10-06 21:29:43,367 INFO L226 Difference]: Without dead ends: 4156 [2021-10-06 21:29:43,368 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 18757.0ms TimeCoverageRelationStatistics Valid=1091, Invalid=1989, Unknown=0, NotChecked=0, Total=3080 [2021-10-06 21:29:43,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4156 states. [2021-10-06 21:29:43,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4156 to 1874. [2021-10-06 21:29:43,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1874 states, 1873 states have (on average 3.250934329951949) internal successors, (6089), 1873 states have internal predecessors, (6089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:43,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1874 states to 1874 states and 6089 transitions. [2021-10-06 21:29:43,416 INFO L78 Accepts]: Start accepts. Automaton has 1874 states and 6089 transitions. Word has length 24 [2021-10-06 21:29:43,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:43,416 INFO L470 AbstractCegarLoop]: Abstraction has 1874 states and 6089 transitions. [2021-10-06 21:29:43,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 29 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:43,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1874 states and 6089 transitions. [2021-10-06 21:29:43,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:29:43,421 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:43,421 INFO L512 BasicCegarLoop]: trace histogram [9, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:43,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:43,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:29:43,637 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:43,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:43,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1862923995, now seen corresponding path program 32 times [2021-10-06 21:29:43,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:43,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030555848] [2021-10-06 21:29:43,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:29:43,639 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:43,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:43,641 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:29:43,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-06 21:29:44,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:29:44,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:44,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:29:44,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:45,970 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 25 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-06 21:29:45,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:50,523 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:50,523 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:50,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030555848] [2021-10-06 21:29:50,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1030555848] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:50,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:50,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 16] total 26 [2021-10-06 21:29:50,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516534863] [2021-10-06 21:29:50,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-06 21:29:50,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:50,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-06 21:29:50,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=525, Unknown=0, NotChecked=0, Total=702 [2021-10-06 21:29:50,525 INFO L87 Difference]: Start difference. First operand 1874 states and 6089 transitions. Second operand has 27 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 26 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:20,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:20,817 INFO L93 Difference]: Finished difference Result 3608 states and 10878 transitions. [2021-10-06 21:30:20,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-10-06 21:30:20,818 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 26 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:30:20,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:20,825 INFO L225 Difference]: With dead ends: 3608 [2021-10-06 21:30:20,825 INFO L226 Difference]: Without dead ends: 3590 [2021-10-06 21:30:20,826 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2522 ImplicationChecksByTransitivity, 28894.1ms TimeCoverageRelationStatistics Valid=1591, Invalid=7915, Unknown=0, NotChecked=0, Total=9506 [2021-10-06 21:30:20,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3590 states. [2021-10-06 21:30:20,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3590 to 2106. [2021-10-06 21:30:20,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2106 states, 2105 states have (on average 3.2289786223277908) internal successors, (6797), 2105 states have internal predecessors, (6797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:20,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 6797 transitions. [2021-10-06 21:30:20,872 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 6797 transitions. Word has length 24 [2021-10-06 21:30:20,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:20,872 INFO L470 AbstractCegarLoop]: Abstraction has 2106 states and 6797 transitions. [2021-10-06 21:30:20,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 26 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:20,872 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 6797 transitions. [2021-10-06 21:30:20,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:30:20,878 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:20,878 INFO L512 BasicCegarLoop]: trace histogram [9, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:20,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:21,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:30:21,092 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:30:21,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:21,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1679767635, now seen corresponding path program 33 times [2021-10-06 21:30:21,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:21,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683063889] [2021-10-06 21:30:21,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:30:21,093 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:21,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:21,095 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:30:21,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-06 21:30:22,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-10-06 21:30:22,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:22,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:30:22,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:23,456 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-06 21:30:23,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:25,821 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-06 21:30:25,821 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:25,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683063889] [2021-10-06 21:30:25,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [683063889] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:25,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:25,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-06 21:30:25,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729790062] [2021-10-06 21:30:25,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:30:25,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:25,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:30:25,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:30:25,824 INFO L87 Difference]: Start difference. First operand 2106 states and 6797 transitions. Second operand has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:36,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:36,778 INFO L93 Difference]: Finished difference Result 4266 states and 12363 transitions. [2021-10-06 21:30:36,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-06 21:30:36,780 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:30:36,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:36,788 INFO L225 Difference]: With dead ends: 4266 [2021-10-06 21:30:36,788 INFO L226 Difference]: Without dead ends: 4266 [2021-10-06 21:30:36,788 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 10312.9ms TimeCoverageRelationStatistics Valid=853, Invalid=2453, Unknown=0, NotChecked=0, Total=3306 [2021-10-06 21:30:36,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4266 states. [2021-10-06 21:30:36,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4266 to 2146. [2021-10-06 21:30:36,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2146 states, 2145 states have (on average 3.2247086247086245) internal successors, (6917), 2145 states have internal predecessors, (6917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:36,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2146 states to 2146 states and 6917 transitions. [2021-10-06 21:30:36,859 INFO L78 Accepts]: Start accepts. Automaton has 2146 states and 6917 transitions. Word has length 24 [2021-10-06 21:30:36,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:36,860 INFO L470 AbstractCegarLoop]: Abstraction has 2146 states and 6917 transitions. [2021-10-06 21:30:36,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:36,860 INFO L276 IsEmpty]: Start isEmpty. Operand 2146 states and 6917 transitions. [2021-10-06 21:30:36,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:30:36,867 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:36,867 INFO L512 BasicCegarLoop]: trace histogram [9, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:36,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:37,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:30:37,083 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:30:37,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:37,084 INFO L82 PathProgramCache]: Analyzing trace with hash -997821601, now seen corresponding path program 34 times [2021-10-06 21:30:37,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:37,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [193125796] [2021-10-06 21:30:37,085 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:30:37,085 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:37,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:37,087 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:30:37,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-06 21:30:38,311 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:30:38,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:38,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:30:38,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:40,039 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 4 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:40,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:45,073 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:45,073 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:45,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [193125796] [2021-10-06 21:30:45,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [193125796] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:45,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:45,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 30 [2021-10-06 21:30:45,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001126947] [2021-10-06 21:30:45,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-06 21:30:45,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:45,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-06 21:30:45,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=664, Unknown=0, NotChecked=0, Total=930 [2021-10-06 21:30:45,075 INFO L87 Difference]: Start difference. First operand 2146 states and 6917 transitions. Second operand has 31 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 30 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:29,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:29,352 INFO L93 Difference]: Finished difference Result 4076 states and 11903 transitions. [2021-10-06 21:31:29,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-10-06 21:31:29,354 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 30 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:31:29,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:29,360 INFO L225 Difference]: With dead ends: 4076 [2021-10-06 21:31:29,360 INFO L226 Difference]: Without dead ends: 4076 [2021-10-06 21:31:29,361 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 39237.5ms TimeCoverageRelationStatistics Valid=1194, Invalid=2966, Unknown=0, NotChecked=0, Total=4160 [2021-10-06 21:31:29,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4076 states. [2021-10-06 21:31:29,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4076 to 2248. [2021-10-06 21:31:29,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2248 states, 2247 states have (on average 3.2336448598130842) internal successors, (7266), 2247 states have internal predecessors, (7266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:29,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2248 states to 2248 states and 7266 transitions. [2021-10-06 21:31:29,448 INFO L78 Accepts]: Start accepts. Automaton has 2248 states and 7266 transitions. Word has length 24 [2021-10-06 21:31:29,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:29,448 INFO L470 AbstractCegarLoop]: Abstraction has 2248 states and 7266 transitions. [2021-10-06 21:31:29,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 30 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:29,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2248 states and 7266 transitions. [2021-10-06 21:31:29,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:31:29,454 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:29,454 INFO L512 BasicCegarLoop]: trace histogram [9, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:29,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-10-06 21:31:29,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:31:29,668 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:31:29,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:29,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1524412343, now seen corresponding path program 35 times [2021-10-06 21:31:29,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:29,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1740046247] [2021-10-06 21:31:29,670 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:31:29,670 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:29,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:29,671 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:31:29,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-06 21:31:31,098 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-06 21:31:31,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:31,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:31:31,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:32,745 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 16 proven. 38 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:31:32,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:38,385 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 23 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:38,386 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:38,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1740046247] [2021-10-06 21:31:38,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1740046247] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:38,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:38,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 28 [2021-10-06 21:31:38,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140672961] [2021-10-06 21:31:38,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-06 21:31:38,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:38,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-06 21:31:38,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=562, Unknown=0, NotChecked=0, Total=812 [2021-10-06 21:31:38,388 INFO L87 Difference]: Start difference. First operand 2248 states and 7266 transitions. Second operand has 29 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 28 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:11,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:11,487 INFO L93 Difference]: Finished difference Result 4670 states and 15145 transitions. [2021-10-06 21:32:11,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-06 21:32:11,488 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 28 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:32:11,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:11,497 INFO L225 Difference]: With dead ends: 4670 [2021-10-06 21:32:11,497 INFO L226 Difference]: Without dead ends: 4648 [2021-10-06 21:32:11,497 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 30016.5ms TimeCoverageRelationStatistics Valid=1387, Invalid=2519, Unknown=0, NotChecked=0, Total=3906 [2021-10-06 21:32:11,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4648 states. [2021-10-06 21:32:11,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4648 to 2564. [2021-10-06 21:32:11,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2564 states, 2563 states have (on average 3.296137339055794) internal successors, (8448), 2563 states have internal predecessors, (8448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:11,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2564 states to 2564 states and 8448 transitions. [2021-10-06 21:32:11,562 INFO L78 Accepts]: Start accepts. Automaton has 2564 states and 8448 transitions. Word has length 24 [2021-10-06 21:32:11,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:11,563 INFO L470 AbstractCegarLoop]: Abstraction has 2564 states and 8448 transitions. [2021-10-06 21:32:11,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 28 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:11,563 INFO L276 IsEmpty]: Start isEmpty. Operand 2564 states and 8448 transitions. [2021-10-06 21:32:11,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:32:11,567 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:11,567 INFO L512 BasicCegarLoop]: trace histogram [9, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:32:11,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-06 21:32:11,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:32:11,768 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:32:11,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:11,769 INFO L82 PathProgramCache]: Analyzing trace with hash -698171731, now seen corresponding path program 36 times [2021-10-06 21:32:11,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:11,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [376057678] [2021-10-06 21:32:11,771 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:32:11,771 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:11,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:11,772 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:32:11,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-06 21:32:13,254 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-10-06 21:32:13,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:32:13,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:32:13,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:14,862 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 6 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:32:14,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:19,914 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:19,914 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:19,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [376057678] [2021-10-06 21:32:19,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [376057678] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:32:19,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:32:19,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 29 [2021-10-06 21:32:19,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121323967] [2021-10-06 21:32:19,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-06 21:32:19,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:19,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-06 21:32:19,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=618, Unknown=0, NotChecked=0, Total=870 [2021-10-06 21:32:19,916 INFO L87 Difference]: Start difference. First operand 2564 states and 8448 transitions. Second operand has 30 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 29 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:59,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:59,344 INFO L93 Difference]: Finished difference Result 4310 states and 12674 transitions. [2021-10-06 21:32:59,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-10-06 21:32:59,345 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 29 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:32:59,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:59,355 INFO L225 Difference]: With dead ends: 4310 [2021-10-06 21:32:59,355 INFO L226 Difference]: Without dead ends: 4310 [2021-10-06 21:32:59,356 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 34484.5ms TimeCoverageRelationStatistics Valid=1267, Invalid=3289, Unknown=0, NotChecked=0, Total=4556 [2021-10-06 21:32:59,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4310 states. [2021-10-06 21:32:59,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4310 to 2638. [2021-10-06 21:32:59,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2638 states, 2637 states have (on average 3.290481607887751) internal successors, (8677), 2637 states have internal predecessors, (8677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:59,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 8677 transitions. [2021-10-06 21:32:59,427 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 8677 transitions. Word has length 24 [2021-10-06 21:32:59,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:59,428 INFO L470 AbstractCegarLoop]: Abstraction has 2638 states and 8677 transitions. [2021-10-06 21:32:59,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 29 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:59,428 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 8677 transitions. [2021-10-06 21:32:59,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:32:59,433 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:59,433 INFO L512 BasicCegarLoop]: trace histogram [9, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:32:59,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-10-06 21:32:59,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:32:59,634 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:32:59,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:59,635 INFO L82 PathProgramCache]: Analyzing trace with hash 721932525, now seen corresponding path program 37 times [2021-10-06 21:32:59,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:59,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [297462873] [2021-10-06 21:32:59,636 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:32:59,637 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:59,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:59,638 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:32:59,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-06 21:33:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:33:01,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:33:01,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:33:02,524 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 21 proven. 31 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 21:33:02,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:33:08,330 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 26 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:08,330 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:33:08,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [297462873] [2021-10-06 21:33:08,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [297462873] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:33:08,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:33:08,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 27 [2021-10-06 21:33:08,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089272073] [2021-10-06 21:33:08,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-06 21:33:08,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:33:08,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-06 21:33:08,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=526, Unknown=0, NotChecked=0, Total=756 [2021-10-06 21:33:08,332 INFO L87 Difference]: Start difference. First operand 2638 states and 8677 transitions. Second operand has 28 states, 28 states have (on average 1.5) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-10-06 21:33:33,391 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-06 21:33:33,391 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-06 21:33:33,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-06 21:33:33,397 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:33:33,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-06 21:33:33,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:33:33,601 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (2638states) and FLOYD_HOARE automaton (currently 40 states, 28 states before enhancement),while ReachableStatesComputation was computing reachable states (460 states constructed, input type IntersectNwa). [2021-10-06 21:33:33,603 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 21:33:33,603 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 21:33:33,604 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 21:33:33,604 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 21:33:33,604 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 21:33:33,604 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 21:33:33,604 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 21:33:33,604 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 21:33:33,604 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:33:33,604 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 21:33:33,604 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 21:33:33,609 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 21:33:33,609 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 21:33:33,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 09:33:33 BasicIcfg [2021-10-06 21:33:33,611 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 21:33:33,611 INFO L168 Benchmark]: Toolchain (without parser) took 844632.30 ms. Allocated memory was 152.0 MB in the beginning and 219.2 MB in the end (delta: 67.1 MB). Free memory was 105.9 MB in the beginning and 132.7 MB in the end (delta: -26.8 MB). Peak memory consumption was 40.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:33:33,611 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory is still 123.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 21:33:33,612 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.12 ms. Allocated memory is still 152.0 MB. Free memory was 105.7 MB in the beginning and 94.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:33:33,612 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.21 ms. Allocated memory is still 152.0 MB. Free memory was 94.8 MB in the beginning and 93.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:33:33,612 INFO L168 Benchmark]: Boogie Preprocessor took 62.52 ms. Allocated memory is still 152.0 MB. Free memory was 93.1 MB in the beginning and 134.8 MB in the end (delta: -41.7 MB). Peak memory consumption was 7.3 MB. Max. memory is 8.0 GB. [2021-10-06 21:33:33,613 INFO L168 Benchmark]: RCFGBuilder took 688.69 ms. Allocated memory is still 152.0 MB. Free memory was 134.8 MB in the beginning and 120.9 MB in the end (delta: 13.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-10-06 21:33:33,613 INFO L168 Benchmark]: TraceAbstraction took 843552.06 ms. Allocated memory was 152.0 MB in the beginning and 219.2 MB in the end (delta: 67.1 MB). Free memory was 120.6 MB in the beginning and 132.7 MB in the end (delta: -12.2 MB). Peak memory consumption was 56.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:33:33,615 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory is still 123.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 271.12 ms. Allocated memory is still 152.0 MB. Free memory was 105.7 MB in the beginning and 94.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 46.21 ms. Allocated memory is still 152.0 MB. Free memory was 94.8 MB in the beginning and 93.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 62.52 ms. Allocated memory is still 152.0 MB. Free memory was 93.1 MB in the beginning and 134.8 MB in the end (delta: -41.7 MB). Peak memory consumption was 7.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 688.69 ms. Allocated memory is still 152.0 MB. Free memory was 134.8 MB in the beginning and 120.9 MB in the end (delta: 13.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 843552.06 ms. Allocated memory was 152.0 MB in the beginning and 219.2 MB in the end (delta: 67.1 MB). Free memory was 120.6 MB in the beginning and 132.7 MB in the end (delta: -12.2 MB). Peak memory consumption was 56.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8118.9ms, 104 PlacesBefore, 30 PlacesAfterwards, 105 TransitionsBefore, 25 TransitionsAfterwards, 936 CoEnabledTransitionPairs, 7 FixpointIterations, 65 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 11 ConcurrentYvCompositions, 6 ChoiceCompositions, 114 TotalNumberOfCompositions, 1089 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1089, positive: 1089, positive conditional: 0, positive unconditional: 1089, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 657, positive: 657, positive conditional: 0, positive unconditional: 657, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 657, positive: 641, positive conditional: 0, positive unconditional: 641, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 16, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 305, positive: 305, positive conditional: 0, positive unconditional: 305, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1089, positive: 432, positive conditional: 0, positive unconditional: 432, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 657, unknown conditional: 0, unknown unconditional: 657] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (2638states) and FLOYD_HOARE automaton (currently 40 states, 28 states before enhancement),while ReachableStatesComputation was computing reachable states (460 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (2638states) and FLOYD_HOARE automaton (currently 40 states, 28 states before enhancement),while ReachableStatesComputation was computing reachable states (460 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (2638states) and FLOYD_HOARE automaton (currently 40 states, 28 states before enhancement),while ReachableStatesComputation was computing reachable states (460 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (2638states) and FLOYD_HOARE automaton (currently 40 states, 28 states before enhancement),while ReachableStatesComputation was computing reachable states (460 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (2638states) and FLOYD_HOARE automaton (currently 40 states, 28 states before enhancement),while ReachableStatesComputation was computing reachable states (460 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (2638states) and FLOYD_HOARE automaton (currently 40 states, 28 states before enhancement),while ReachableStatesComputation was computing reachable states (460 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (2638states) and FLOYD_HOARE automaton (currently 40 states, 28 states before enhancement),while ReachableStatesComputation was computing reachable states (460 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (2638states) and FLOYD_HOARE automaton (currently 40 states, 28 states before enhancement),while ReachableStatesComputation was computing reachable states (460 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (2638states) and FLOYD_HOARE automaton (currently 40 states, 28 states before enhancement),while ReachableStatesComputation was computing reachable states (460 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (2638states) and FLOYD_HOARE automaton (currently 40 states, 28 states before enhancement),while ReachableStatesComputation was computing reachable states (460 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (2638states) and FLOYD_HOARE automaton (currently 40 states, 28 states before enhancement),while ReachableStatesComputation was computing reachable states (460 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (2638states) and FLOYD_HOARE automaton (currently 40 states, 28 states before enhancement),while ReachableStatesComputation was computing reachable states (460 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 122 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 843429.6ms, OverallIterations: 50, TraceHistogramMax: 9, EmptinessCheckTime: 122.5ms, AutomataDifference: 610261.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8171.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1375 SDtfs, 9138 SDslu, 12377 SDs, 0 SdLazy, 13768 SolverSat, 4029 SolverUnsat, 13 SolverUnknown, 0 SolverNotchecked, 127184.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2351 GetRequests, 874 SyntacticMatches, 0 SemanticMatches, 1477 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13576 ImplicationChecksByTransitivity, 591675.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2638occurred in iteration=49, InterpolantAutomatonStates: 1349, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1209.4ms AutomataMinimizationTime, 49 MinimizatonAttempts, 27000 StatesRemovedByMinimization, 42 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 416.3ms SsaConstructionTime, 4596.7ms SatisfiabilityAnalysisTime, 186230.9ms InterpolantComputationTime, 837 NumberOfCodeBlocks, 834 NumberOfCodeBlocksAsserted, 121 NumberOfCheckSat, 1574 ConstructedInterpolants, 130 QuantifiedInterpolants, 26038 SizeOfPredicates, 607 NumberOfNonLiveVariables, 3396 ConjunctsInSsa, 565 ConjunctsInUnsatCore, 100 InterpolantComputations, 14 PerfectInterpolantSequences, 418/2152 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown