/usr/bin/java -Xmx8000000000 -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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread-divine/condvar.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 12:17:22,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:17:22,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:17:22,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:17:22,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:17:22,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:17:22,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:17:23,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:17:23,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:17:23,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:17:23,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:17:23,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:17:23,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:17:23,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:17:23,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:17:23,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:17:23,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:17:23,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:17:23,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:17:23,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:17:23,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:17:23,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:17:23,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:17:23,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:17:23,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 12:17:23,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:17:23,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:17:23,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:17:23,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:17:23,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:17:23,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:17:23,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:17:23,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:17:23,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:17:23,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:17:23,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:17:23,052 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-16 12:17:23,089 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:17:23,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:17:23,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:17:23,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:17:23,091 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:17:23,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:17:23,092 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:17:23,092 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:17:23,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:17:23,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:17:23,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:17:23,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:17:23,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:17:23,093 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:17:23,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:17:23,093 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:17:23,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:17:23,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:17:23,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:17:23,094 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:17:23,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:17:23,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:17:23,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:17:23,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:17:23,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:17:23,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:17:23,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:17:23,096 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:17:23,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:17:23,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:17:23,378 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:17:23,381 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:17:23,382 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:17:23,383 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:17:23,384 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/condvar.i [2020-10-16 12:17:23,460 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4440ff5be/32351dfc6d784638bd82147a7580ae26/FLAGe5f6a4ae8 [2020-10-16 12:17:23,982 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:17:23,982 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-divine/condvar.i [2020-10-16 12:17:24,012 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4440ff5be/32351dfc6d784638bd82147a7580ae26/FLAGe5f6a4ae8 [2020-10-16 12:17:24,283 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4440ff5be/32351dfc6d784638bd82147a7580ae26 [2020-10-16 12:17:24,292 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:17:24,293 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:17:24,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:17:24,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:17:24,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:17:24,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:17:24" (1/1) ... [2020-10-16 12:17:24,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bc4d5fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:17:24, skipping insertion in model container [2020-10-16 12:17:24,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:17:24" (1/1) ... [2020-10-16 12:17:24,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:17:24,349 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:17:24,509 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-16 12:17:24,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:17:24,777 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:17:24,800 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-16 12:17:24,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:17:24,930 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:17:24,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:17:24 WrapperNode [2020-10-16 12:17:24,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:17:24,932 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:17:24,932 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:17:24,932 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:17:24,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:17:24" (1/1) ... [2020-10-16 12:17:24,958 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:17:24" (1/1) ... [2020-10-16 12:17:24,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:17:24,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:17:24,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:17:24,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:17:24,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:17:24" (1/1) ... [2020-10-16 12:17:24,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:17:24" (1/1) ... [2020-10-16 12:17:24,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:17:24" (1/1) ... [2020-10-16 12:17:24,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:17:24" (1/1) ... [2020-10-16 12:17:25,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:17:24" (1/1) ... [2020-10-16 12:17:25,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:17:24" (1/1) ... [2020-10-16 12:17:25,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:17:24" (1/1) ... [2020-10-16 12:17:25,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:17:25,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:17:25,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:17:25,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:17:25,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:17:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:17:25,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 12:17:25,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:17:25,084 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-16 12:17:25,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:17:25,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:17:25,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-16 12:17:25,085 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2020-10-16 12:17:25,085 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2020-10-16 12:17:25,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:17:25,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:17:25,087 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 12:17:25,469 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:17:25,469 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-16 12:17:25,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:17:25 BoogieIcfgContainer [2020-10-16 12:17:25,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:17:25,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:17:25,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:17:25,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:17:25,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:17:24" (1/3) ... [2020-10-16 12:17:25,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a03542 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:17:25, skipping insertion in model container [2020-10-16 12:17:25,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:17:24" (2/3) ... [2020-10-16 12:17:25,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a03542 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:17:25, skipping insertion in model container [2020-10-16 12:17:25,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:17:25" (3/3) ... [2020-10-16 12:17:25,480 INFO L111 eAbstractionObserver]: Analyzing ICFG condvar.i [2020-10-16 12:17:25,493 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:17:25,493 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:17:25,501 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 12:17:25,502 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:17:25,524 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:25,524 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:25,525 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:25,525 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:25,525 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:25,526 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:25,527 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:25,527 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:25,527 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:25,528 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:25,532 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:25,532 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:25,532 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:25,533 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:25,533 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:25,533 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:17:25,545 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2020-10-16 12:17:25,557 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-16 12:17:25,580 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:17:25,580 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:17:25,580 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:17:25,580 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 12:17:25,581 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:17:25,581 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:17:25,581 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:17:25,581 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:17:25,596 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:17:25,597 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 59 transitions, 126 flow [2020-10-16 12:17:25,600 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 59 transitions, 126 flow [2020-10-16 12:17:25,603 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 58 places, 59 transitions, 126 flow [2020-10-16 12:17:25,644 INFO L129 PetriNetUnfolder]: 5/58 cut-off events. [2020-10-16 12:17:25,644 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-16 12:17:25,649 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. [2020-10-16 12:17:25,651 INFO L117 LiptonReduction]: Number of co-enabled transitions 352 [2020-10-16 12:17:26,668 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-10-16 12:17:27,129 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-10-16 12:17:27,255 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-16 12:17:27,260 INFO L132 LiptonReduction]: Checked pairs total: 401 [2020-10-16 12:17:27,261 INFO L134 LiptonReduction]: Total number of compositions: 50 [2020-10-16 12:17:27,267 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 13 transitions, 34 flow [2020-10-16 12:17:27,277 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 19 states. [2020-10-16 12:17:27,279 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-16 12:17:27,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-16 12:17:27,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:17:27,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 12:17:27,287 INFO L429 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:17:27,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:17:27,293 INFO L82 PathProgramCache]: Analyzing trace with hash 225592945, now seen corresponding path program 1 times [2020-10-16 12:17:27,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:17:27,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584710766] [2020-10-16 12:17:27,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:17:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:27,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:17:27,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584710766] [2020-10-16 12:17:27,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:17:27,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:17:27,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755999849] [2020-10-16 12:17:27,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:17:27,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:17:27,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:17:27,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:17:27,510 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-10-16 12:17:27,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:17:27,535 INFO L93 Difference]: Finished difference Result 13 states and 19 transitions. [2020-10-16 12:17:27,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:17:27,537 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-16 12:17:27,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:17:27,551 INFO L225 Difference]: With dead ends: 13 [2020-10-16 12:17:27,552 INFO L226 Difference]: Without dead ends: 10 [2020-10-16 12:17:27,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:17:27,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-16 12:17:27,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-16 12:17:27,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-16 12:17:27,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 16 transitions. [2020-10-16 12:17:27,595 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 16 transitions. Word has length 5 [2020-10-16 12:17:27,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:17:27,596 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 16 transitions. [2020-10-16 12:17:27,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:17:27,596 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 16 transitions. [2020-10-16 12:17:27,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-16 12:17:27,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:17:27,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:17:27,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:17:27,598 INFO L429 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:17:27,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:17:27,599 INFO L82 PathProgramCache]: Analyzing trace with hash 2032051994, now seen corresponding path program 1 times [2020-10-16 12:17:27,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:17:27,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190915089] [2020-10-16 12:17:27,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:17:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:27,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:17:27,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190915089] [2020-10-16 12:17:27,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:17:27,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:17:27,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354762285] [2020-10-16 12:17:27,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:17:27,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:17:27,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:17:27,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:17:27,672 INFO L87 Difference]: Start difference. First operand 10 states and 16 transitions. Second operand 3 states. [2020-10-16 12:17:27,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:17:27,680 INFO L93 Difference]: Finished difference Result 12 states and 20 transitions. [2020-10-16 12:17:27,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:17:27,681 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-16 12:17:27,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:17:27,682 INFO L225 Difference]: With dead ends: 12 [2020-10-16 12:17:27,682 INFO L226 Difference]: Without dead ends: 12 [2020-10-16 12:17:27,683 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 [2020-10-16 12:17:27,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-16 12:17:27,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-10-16 12:17:27,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-16 12:17:27,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 20 transitions. [2020-10-16 12:17:27,687 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 20 transitions. Word has length 7 [2020-10-16 12:17:27,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:17:27,687 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 20 transitions. [2020-10-16 12:17:27,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:17:27,687 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 20 transitions. [2020-10-16 12:17:27,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 12:17:27,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:17:27,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:17:27,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 12:17:27,688 INFO L429 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:17:27,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:17:27,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1430445622, now seen corresponding path program 1 times [2020-10-16 12:17:27,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:17:27,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823924840] [2020-10-16 12:17:27,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:17:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:27,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:17:27,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823924840] [2020-10-16 12:17:27,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226203721] [2020-10-16 12:17:27,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:17:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:27,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-16 12:17:27,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:17:27,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:17:27,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:17:27,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-10-16 12:17:27,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692129982] [2020-10-16 12:17:27,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 12:17:27,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:17:27,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 12:17:27,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:17:27,853 INFO L87 Difference]: Start difference. First operand 12 states and 20 transitions. Second operand 6 states. [2020-10-16 12:17:27,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:17:27,873 INFO L93 Difference]: Finished difference Result 14 states and 24 transitions. [2020-10-16 12:17:27,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:17:27,874 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-10-16 12:17:27,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:17:27,875 INFO L225 Difference]: With dead ends: 14 [2020-10-16 12:17:27,875 INFO L226 Difference]: Without dead ends: 14 [2020-10-16 12:17:27,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:17:27,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-16 12:17:27,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-16 12:17:27,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-16 12:17:27,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 24 transitions. [2020-10-16 12:17:27,879 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 24 transitions. Word has length 8 [2020-10-16 12:17:27,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:17:27,879 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 24 transitions. [2020-10-16 12:17:27,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 12:17:27,880 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 24 transitions. [2020-10-16 12:17:27,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:17:27,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:17:27,881 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:17:28,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-16 12:17:28,092 INFO L429 AbstractCegarLoop]: === Iteration 4 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:17:28,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:17:28,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1393689318, now seen corresponding path program 2 times [2020-10-16 12:17:28,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:17:28,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835265074] [2020-10-16 12:17:28,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:17:28,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:28,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:17:28,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835265074] [2020-10-16 12:17:28,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959236541] [2020-10-16 12:17:28,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:17:28,213 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:17:28,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:17:28,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-16 12:17:28,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:17:28,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:17:28,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:17:28,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 12:17:28,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721565416] [2020-10-16 12:17:28,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:17:28,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:17:28,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:17:28,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:17:28,250 INFO L87 Difference]: Start difference. First operand 14 states and 24 transitions. Second operand 7 states. [2020-10-16 12:17:28,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:17:28,275 INFO L93 Difference]: Finished difference Result 16 states and 28 transitions. [2020-10-16 12:17:28,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:17:28,276 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2020-10-16 12:17:28,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:17:28,277 INFO L225 Difference]: With dead ends: 16 [2020-10-16 12:17:28,277 INFO L226 Difference]: Without dead ends: 16 [2020-10-16 12:17:28,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:17:28,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-16 12:17:28,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-16 12:17:28,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-16 12:17:28,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 28 transitions. [2020-10-16 12:17:28,295 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 28 transitions. Word has length 9 [2020-10-16 12:17:28,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:17:28,296 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 28 transitions. [2020-10-16 12:17:28,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:17:28,296 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 28 transitions. [2020-10-16 12:17:28,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 12:17:28,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:17:28,297 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:17:28,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:28,506 INFO L429 AbstractCegarLoop]: === Iteration 5 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:17:28,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:17:28,507 INFO L82 PathProgramCache]: Analyzing trace with hash -254243894, now seen corresponding path program 3 times [2020-10-16 12:17:28,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:17:28,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788266339] [2020-10-16 12:17:28,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:17:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:17:28,560 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:17:28,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788266339] [2020-10-16 12:17:28,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696702585] [2020-10-16 12:17:28,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:17:28,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:17:28,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:17:28,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 12:17:28,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:17:28,662 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:17:28,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-16 12:17:28,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2020-10-16 12:17:28,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814937563] [2020-10-16 12:17:28,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:17:28,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:17:28,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:17:28,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-16 12:17:28,668 INFO L87 Difference]: Start difference. First operand 16 states and 28 transitions. Second operand 4 states. [2020-10-16 12:17:28,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:17:28,695 INFO L93 Difference]: Finished difference Result 15 states and 27 transitions. [2020-10-16 12:17:28,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:17:28,695 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-16 12:17:28,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:17:28,695 INFO L225 Difference]: With dead ends: 15 [2020-10-16 12:17:28,695 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 12:17:28,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 12:17:28,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 12:17:28,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 12:17:28,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 12:17:28,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 12:17:28,697 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-10-16 12:17:28,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:17:28,697 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 12:17:28,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:17:28,698 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 12:17:28,698 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 12:17:28,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:17:28,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:17:28 BasicIcfg [2020-10-16 12:17:28,909 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 12:17:28,911 INFO L168 Benchmark]: Toolchain (without parser) took 4617.08 ms. Allocated memory was 141.0 MB in the beginning and 245.9 MB in the end (delta: 104.9 MB). Free memory was 103.7 MB in the beginning and 187.5 MB in the end (delta: -83.8 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2020-10-16 12:17:28,911 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 12:17:28,913 INFO L168 Benchmark]: CACSL2BoogieTranslator took 637.08 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 103.3 MB in the beginning and 164.9 MB in the end (delta: -61.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-10-16 12:17:28,913 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.23 ms. Allocated memory is still 205.0 MB. Free memory was 164.9 MB in the beginning and 162.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-10-16 12:17:28,914 INFO L168 Benchmark]: Boogie Preprocessor took 28.98 ms. Allocated memory is still 205.0 MB. Free memory was 162.6 MB in the beginning and 161.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 12:17:28,915 INFO L168 Benchmark]: RCFGBuilder took 460.79 ms. Allocated memory is still 205.0 MB. Free memory was 161.3 MB in the beginning and 139.6 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-10-16 12:17:28,916 INFO L168 Benchmark]: TraceAbstraction took 3435.71 ms. Allocated memory was 205.0 MB in the beginning and 245.9 MB in the end (delta: 40.9 MB). Free memory was 138.9 MB in the beginning and 187.5 MB in the end (delta: -48.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 12:17:28,920 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 637.08 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 103.3 MB in the beginning and 164.9 MB in the end (delta: -61.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.23 ms. Allocated memory is still 205.0 MB. Free memory was 164.9 MB in the beginning and 162.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.98 ms. Allocated memory is still 205.0 MB. Free memory was 162.6 MB in the beginning and 161.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 460.79 ms. Allocated memory is still 205.0 MB. Free memory was 161.3 MB in the beginning and 139.6 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3435.71 ms. Allocated memory was 205.0 MB in the beginning and 245.9 MB in the end (delta: 40.9 MB). Free memory was 138.9 MB in the beginning and 187.5 MB in the end (delta: -48.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 191 VarBasedMoverChecksPositive, 13 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 10 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 58 PlacesBefore, 15 PlacesAfterwards, 59 TransitionsBefore, 13 TransitionsAfterwards, 352 CoEnabledTransitionPairs, 5 FixpointIterations, 27 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 3 ChoiceCompositions, 50 TotalNumberOfCompositions, 401 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: 3.3s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 56 SDtfs, 22 SDslu, 61 SDs, 0 SdLazy, 43 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 0.3s InterpolantComputationTime, 66 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 970 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...