/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-divine/condvar.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 22:56:29,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 22:56:29,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 22:56:29,998 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 22:56:29,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 22:56:30,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 22:56:30,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 22:56:30,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 22:56:30,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 22:56:30,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 22:56:30,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 22:56:30,021 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 22:56:30,021 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 22:56:30,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 22:56:30,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 22:56:30,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 22:56:30,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 22:56:30,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 22:56:30,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 22:56:30,039 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 22:56:30,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 22:56:30,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 22:56:30,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 22:56:30,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 22:56:30,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 22:56:30,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 22:56:30,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 22:56:30,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 22:56:30,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 22:56:30,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 22:56:30,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 22:56:30,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 22:56:30,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 22:56:30,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 22:56:30,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 22:56:30,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 22:56:30,069 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-10-15 22:56:30,110 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 22:56:30,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 22:56:30,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 22:56:30,112 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 22:56:30,112 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 22:56:30,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 22:56:30,113 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 22:56:30,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 22:56:30,113 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 22:56:30,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 22:56:30,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 22:56:30,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 22:56:30,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 22:56:30,115 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 22:56:30,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 22:56:30,116 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 22:56:30,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 22:56:30,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 22:56:30,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 22:56:30,116 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 22:56:30,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 22:56:30,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 22:56:30,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 22:56:30,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 22:56:30,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 22:56:30,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 22:56:30,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 22:56:30,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 22:56:30,118 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 22:56:30,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 22:56:30,462 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 22:56:30,466 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 22:56:30,470 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 22:56:30,472 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 22:56:30,473 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/condvar.i [2020-10-15 22:56:30,537 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c68abd8f/c789ccceb8b94c9ebdd71479f60a2b58/FLAG1899fbfb4 [2020-10-15 22:56:31,086 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 22:56:31,087 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar.i [2020-10-15 22:56:31,099 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c68abd8f/c789ccceb8b94c9ebdd71479f60a2b58/FLAG1899fbfb4 [2020-10-15 22:56:31,295 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c68abd8f/c789ccceb8b94c9ebdd71479f60a2b58 [2020-10-15 22:56:31,306 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 22:56:31,309 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 22:56:31,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 22:56:31,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 22:56:31,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 22:56:31,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:56:31" (1/1) ... [2020-10-15 22:56:31,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@290b8d29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:56:31, skipping insertion in model container [2020-10-15 22:56:31,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:56:31" (1/1) ... [2020-10-15 22:56:31,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 22:56:31,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 22:56:31,660 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-15 22:56:31,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:56:31,955 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 22:56:31,970 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-15 22:56:31,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:56:32,074 INFO L208 MainTranslator]: Completed translation [2020-10-15 22:56:32,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:56:32 WrapperNode [2020-10-15 22:56:32,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 22:56:32,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 22:56:32,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 22:56:32,076 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 22:56:32,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:56:32" (1/1) ... [2020-10-15 22:56:32,101 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:56:32" (1/1) ... [2020-10-15 22:56:32,124 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 22:56:32,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 22:56:32,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 22:56:32,124 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 22:56:32,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:56:32" (1/1) ... [2020-10-15 22:56:32,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:56:32" (1/1) ... [2020-10-15 22:56:32,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:56:32" (1/1) ... [2020-10-15 22:56:32,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:56:32" (1/1) ... [2020-10-15 22:56:32,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:56:32" (1/1) ... [2020-10-15 22:56:32,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:56:32" (1/1) ... [2020-10-15 22:56:32,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:56:32" (1/1) ... [2020-10-15 22:56:32,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 22:56:32,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 22:56:32,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 22:56:32,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 22:56:32,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:56:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 22:56:32,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 22:56:32,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 22:56:32,229 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-15 22:56:32,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 22:56:32,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 22:56:32,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-15 22:56:32,230 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2020-10-15 22:56:32,230 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2020-10-15 22:56:32,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 22:56:32,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 22:56:32,233 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 22:56:32,604 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 22:56:32,605 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-15 22:56:32,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:56:32 BoogieIcfgContainer [2020-10-15 22:56:32,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 22:56:32,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 22:56:32,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 22:56:32,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 22:56:32,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 10:56:31" (1/3) ... [2020-10-15 22:56:32,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2234e854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:56:32, skipping insertion in model container [2020-10-15 22:56:32,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:56:32" (2/3) ... [2020-10-15 22:56:32,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2234e854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:56:32, skipping insertion in model container [2020-10-15 22:56:32,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:56:32" (3/3) ... [2020-10-15 22:56:32,615 INFO L111 eAbstractionObserver]: Analyzing ICFG condvar.i [2020-10-15 22:56:32,627 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 22:56:32,627 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 22:56:32,636 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 22:56:32,637 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 22:56:32,659 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:56:32,659 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:56:32,659 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:56:32,660 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:56:32,660 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:56:32,660 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:56:32,661 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:56:32,661 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:56:32,661 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:56:32,662 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:56:32,664 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:56:32,665 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:56:32,665 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:56:32,665 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:56:32,665 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:56:32,665 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:56:32,681 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-15 22:56:32,699 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 22:56:32,699 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 22:56:32,699 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 22:56:32,699 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 22:56:32,699 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 22:56:32,699 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 22:56:32,700 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 22:56:32,700 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 22:56:32,711 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 22:56:32,713 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 59 transitions, 126 flow [2020-10-15 22:56:32,715 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 59 transitions, 126 flow [2020-10-15 22:56:32,717 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 58 places, 59 transitions, 126 flow [2020-10-15 22:56:32,752 INFO L129 PetriNetUnfolder]: 5/58 cut-off events. [2020-10-15 22:56:32,753 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-15 22:56:32,757 INFO L80 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 58 events. 5/58 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2020-10-15 22:56:32,759 INFO L117 LiptonReduction]: Number of co-enabled transitions 352 [2020-10-15 22:56:33,965 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-10-15 22:56:34,397 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-10-15 22:56:34,541 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-15 22:56:34,547 INFO L132 LiptonReduction]: Checked pairs total: 338 [2020-10-15 22:56:34,547 INFO L134 LiptonReduction]: Total number of compositions: 53 [2020-10-15 22:56:34,557 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 14 places, 12 transitions, 32 flow [2020-10-15 22:56:34,583 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 16 states. [2020-10-15 22:56:34,586 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-10-15 22:56:34,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-15 22:56:34,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:56:34,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-15 22:56:34,595 INFO L429 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:56:34,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:56:34,601 INFO L82 PathProgramCache]: Analyzing trace with hash 7366572, now seen corresponding path program 1 times [2020-10-15 22:56:34,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:56:34,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698949814] [2020-10-15 22:56:34,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:56:34,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:56:34,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:56:34,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698949814] [2020-10-15 22:56:34,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:56:34,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 22:56:34,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475914601] [2020-10-15 22:56:34,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:56:34,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:56:34,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:56:34,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:56:34,822 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2020-10-15 22:56:34,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:56:34,853 INFO L93 Difference]: Finished difference Result 12 states and 18 transitions. [2020-10-15 22:56:34,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:56:34,855 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-15 22:56:34,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:56:34,865 INFO L225 Difference]: With dead ends: 12 [2020-10-15 22:56:34,865 INFO L226 Difference]: Without dead ends: 9 [2020-10-15 22:56:34,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:56:34,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-10-15 22:56:34,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-10-15 22:56:34,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-15 22:56:34,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 15 transitions. [2020-10-15 22:56:34,895 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 15 transitions. Word has length 4 [2020-10-15 22:56:34,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:56:34,895 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 15 transitions. [2020-10-15 22:56:34,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:56:34,896 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 15 transitions. [2020-10-15 22:56:34,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-15 22:56:34,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:56:34,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-15 22:56:34,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 22:56:34,897 INFO L429 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:56:34,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:56:34,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1511130461, now seen corresponding path program 1 times [2020-10-15 22:56:34,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:56:34,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092895371] [2020-10-15 22:56:34,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:56:34,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:56:35,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:56:35,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092895371] [2020-10-15 22:56:35,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:56:35,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:56:35,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141543652] [2020-10-15 22:56:35,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:56:35,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:56:35,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:56:35,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:56:35,013 INFO L87 Difference]: Start difference. First operand 9 states and 15 transitions. Second operand 3 states. [2020-10-15 22:56:35,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:56:35,046 INFO L93 Difference]: Finished difference Result 11 states and 19 transitions. [2020-10-15 22:56:35,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:56:35,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-15 22:56:35,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:56:35,049 INFO L225 Difference]: With dead ends: 11 [2020-10-15 22:56:35,049 INFO L226 Difference]: Without dead ends: 11 [2020-10-15 22:56:35,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:56:35,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-15 22:56:35,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-15 22:56:35,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-15 22:56:35,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 19 transitions. [2020-10-15 22:56:35,059 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 19 transitions. Word has length 6 [2020-10-15 22:56:35,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:56:35,060 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 19 transitions. [2020-10-15 22:56:35,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:56:35,061 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 19 transitions. [2020-10-15 22:56:35,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-15 22:56:35,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:56:35,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:56:35,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 22:56:35,062 INFO L429 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:56:35,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:56:35,063 INFO L82 PathProgramCache]: Analyzing trace with hash 399613212, now seen corresponding path program 1 times [2020-10-15 22:56:35,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:56:35,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969534501] [2020-10-15 22:56:35,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:56:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:56:35,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:56:35,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969534501] [2020-10-15 22:56:35,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368315034] [2020-10-15 22:56:35,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 22:56:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:56:35,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-15 22:56:35,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 22:56:35,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:56:35,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 22:56:35,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-10-15 22:56:35,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168909450] [2020-10-15 22:56:35,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 22:56:35,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:56:35,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 22:56:35,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:56:35,262 INFO L87 Difference]: Start difference. First operand 11 states and 19 transitions. Second operand 6 states. [2020-10-15 22:56:35,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:56:35,290 INFO L93 Difference]: Finished difference Result 13 states and 23 transitions. [2020-10-15 22:56:35,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 22:56:35,290 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2020-10-15 22:56:35,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:56:35,291 INFO L225 Difference]: With dead ends: 13 [2020-10-15 22:56:35,291 INFO L226 Difference]: Without dead ends: 13 [2020-10-15 22:56:35,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:56:35,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-10-15 22:56:35,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-10-15 22:56:35,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-15 22:56:35,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 23 transitions. [2020-10-15 22:56:35,295 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 23 transitions. Word has length 7 [2020-10-15 22:56:35,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:56:35,296 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 23 transitions. [2020-10-15 22:56:35,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 22:56:35,296 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 23 transitions. [2020-10-15 22:56:35,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 22:56:35,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:56:35,297 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-15 22:56:35,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-15 22:56:35,507 INFO L429 AbstractCegarLoop]: === Iteration 4 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:56:35,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:56:35,508 INFO L82 PathProgramCache]: Analyzing trace with hash -496875069, now seen corresponding path program 2 times [2020-10-15 22:56:35,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:56:35,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025017128] [2020-10-15 22:56:35,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:56:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:56:35,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:56:35,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025017128] [2020-10-15 22:56:35,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127196255] [2020-10-15 22:56:35,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 22:56:35,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 22:56:35,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 22:56:35,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-15 22:56:35,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 22:56:35,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:56:35,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 22:56:35,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-15 22:56:35,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567293454] [2020-10-15 22:56:35,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 22:56:35,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:56:35,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 22:56:35,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-15 22:56:35,708 INFO L87 Difference]: Start difference. First operand 13 states and 23 transitions. Second operand 7 states. [2020-10-15 22:56:35,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:56:35,738 INFO L93 Difference]: Finished difference Result 15 states and 27 transitions. [2020-10-15 22:56:35,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:56:35,739 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2020-10-15 22:56:35,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:56:35,740 INFO L225 Difference]: With dead ends: 15 [2020-10-15 22:56:35,740 INFO L226 Difference]: Without dead ends: 15 [2020-10-15 22:56:35,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-15 22:56:35,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-15 22:56:35,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-15 22:56:35,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-15 22:56:35,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 27 transitions. [2020-10-15 22:56:35,746 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 27 transitions. Word has length 8 [2020-10-15 22:56:35,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:56:35,747 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 27 transitions. [2020-10-15 22:56:35,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 22:56:35,747 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 27 transitions. [2020-10-15 22:56:35,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 22:56:35,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:56:35,748 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2020-10-15 22:56:35,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 22:56:35,949 INFO L429 AbstractCegarLoop]: === Iteration 5 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:56:35,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:56:35,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1776759292, now seen corresponding path program 3 times [2020-10-15 22:56:35,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:56:35,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163299621] [2020-10-15 22:56:35,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:56:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:56:36,023 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:56:36,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163299621] [2020-10-15 22:56:36,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636544673] [2020-10-15 22:56:36,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 22:56:36,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 22:56:36,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 22:56:36,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-15 22:56:36,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 22:56:36,106 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 22:56:36,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-15 22:56:36,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2020-10-15 22:56:36,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987783068] [2020-10-15 22:56:36,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:56:36,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:56:36,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:56:36,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-15 22:56:36,108 INFO L87 Difference]: Start difference. First operand 15 states and 27 transitions. Second operand 4 states. [2020-10-15 22:56:36,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:56:36,130 INFO L93 Difference]: Finished difference Result 14 states and 26 transitions. [2020-10-15 22:56:36,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 22:56:36,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-15 22:56:36,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:56:36,131 INFO L225 Difference]: With dead ends: 14 [2020-10-15 22:56:36,131 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 22:56:36,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-15 22:56:36,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 22:56:36,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 22:56:36,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 22:56:36,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 22:56:36,133 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-10-15 22:56:36,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:56:36,133 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 22:56:36,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:56:36,134 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 22:56:36,134 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 22:56:36,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 22:56:36,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 10:56:36 BasicIcfg [2020-10-15 22:56:36,346 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 22:56:36,348 INFO L168 Benchmark]: Toolchain (without parser) took 5040.30 ms. Allocated memory was 248.0 MB in the beginning and 368.1 MB in the end (delta: 120.1 MB). Free memory was 203.4 MB in the beginning and 259.5 MB in the end (delta: -56.2 MB). Peak memory consumption was 63.9 MB. Max. memory is 14.2 GB. [2020-10-15 22:56:36,349 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 248.0 MB. Free memory is still 224.4 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 22:56:36,350 INFO L168 Benchmark]: CACSL2BoogieTranslator took 765.12 ms. Allocated memory was 248.0 MB in the beginning and 305.7 MB in the end (delta: 57.7 MB). Free memory was 203.4 MB in the beginning and 261.7 MB in the end (delta: -58.4 MB). Peak memory consumption was 26.6 MB. Max. memory is 14.2 GB. [2020-10-15 22:56:36,351 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.31 ms. Allocated memory is still 305.7 MB. Free memory was 261.7 MB in the beginning and 259.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 22:56:36,352 INFO L168 Benchmark]: Boogie Preprocessor took 29.46 ms. Allocated memory is still 305.7 MB. Free memory was 259.2 MB in the beginning and 256.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 22:56:36,352 INFO L168 Benchmark]: RCFGBuilder took 452.75 ms. Allocated memory is still 305.7 MB. Free memory was 256.7 MB in the beginning and 234.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 14.2 GB. [2020-10-15 22:56:36,353 INFO L168 Benchmark]: TraceAbstraction took 3738.79 ms. Allocated memory was 305.7 MB in the beginning and 368.1 MB in the end (delta: 62.4 MB). Free memory was 234.7 MB in the beginning and 259.5 MB in the end (delta: -24.8 MB). Peak memory consumption was 37.6 MB. Max. memory is 14.2 GB. [2020-10-15 22:56:36,357 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 248.0 MB. Free memory is still 224.4 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 765.12 ms. Allocated memory was 248.0 MB in the beginning and 305.7 MB in the end (delta: 57.7 MB). Free memory was 203.4 MB in the beginning and 261.7 MB in the end (delta: -58.4 MB). Peak memory consumption was 26.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 48.31 ms. Allocated memory is still 305.7 MB. Free memory was 261.7 MB in the beginning and 259.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 29.46 ms. Allocated memory is still 305.7 MB. Free memory was 259.2 MB in the beginning and 256.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 452.75 ms. Allocated memory is still 305.7 MB. Free memory was 256.7 MB in the beginning and 234.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3738.79 ms. Allocated memory was 305.7 MB in the beginning and 368.1 MB in the end (delta: 62.4 MB). Free memory was 234.7 MB in the beginning and 259.5 MB in the end (delta: -24.8 MB). Peak memory consumption was 37.6 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 243 VarBasedMoverChecksPositive, 13 VarBasedMoverChecksNegative, 3 SemBasedMoverChecksPositive, 10 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 6 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 58 PlacesBefore, 14 PlacesAfterwards, 59 TransitionsBefore, 12 TransitionsAfterwards, 352 CoEnabledTransitionPairs, 5 FixpointIterations, 27 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 3 ChoiceCompositions, 53 TotalNumberOfCompositions, 338 MoverChecksTotal - PositiveResult [Line: 695]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 51 SDtfs, 20 SDslu, 54 SDs, 0 SdLazy, 45 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 58 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 746 SizeOfPredicates, 3 NumberOfNonLiveVariables, 256 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 6/20 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 proved your program to be correct! Received shutdown request...