/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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 20:10:25,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 20:10:25,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 20:10:25,026 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 20:10:25,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 20:10:25,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 20:10:25,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 20:10:25,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 20:10:25,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 20:10:25,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 20:10:25,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 20:10:25,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 20:10:25,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 20:10:25,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 20:10:25,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 20:10:25,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 20:10:25,041 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 20:10:25,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 20:10:25,044 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 20:10:25,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 20:10:25,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 20:10:25,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 20:10:25,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 20:10:25,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 20:10:25,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 20:10:25,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 20:10:25,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 20:10:25,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 20:10:25,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 20:10:25,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 20:10:25,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 20:10:25,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 20:10:25,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 20:10:25,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 20:10:25,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 20:10:25,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 20:10:25,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 20:10:25,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 20:10:25,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 20:10:25,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 20:10:25,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 20:10:25,065 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-NoLbe-McrStrategy.epf [2020-04-18 20:10:25,081 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 20:10:25,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 20:10:25,083 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 20:10:25,083 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 20:10:25,083 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 20:10:25,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 20:10:25,084 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 20:10:25,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 20:10:25,084 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 20:10:25,084 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 20:10:25,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 20:10:25,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 20:10:25,085 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 20:10:25,085 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 20:10:25,085 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 20:10:25,086 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 20:10:25,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 20:10:25,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 20:10:25,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 20:10:25,086 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 20:10:25,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 20:10:25,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 20:10:25,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 20:10:25,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 20:10:25,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 20:10:25,088 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 20:10:25,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 20:10:25,088 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 20:10:25,088 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 20:10:25,088 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 20:10:25,089 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 20:10:25,382 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 20:10:25,392 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 20:10:25,398 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 20:10:25,399 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 20:10:25,400 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 20:10:25,402 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i [2020-04-18 20:10:25,467 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9990707b4/689c6e7f28e64d31853a20d9e5c0e8cc/FLAG818f127db [2020-04-18 20:10:26,148 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 20:10:26,149 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i [2020-04-18 20:10:26,173 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9990707b4/689c6e7f28e64d31853a20d9e5c0e8cc/FLAG818f127db [2020-04-18 20:10:26,336 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9990707b4/689c6e7f28e64d31853a20d9e5c0e8cc [2020-04-18 20:10:26,345 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 20:10:26,369 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 20:10:26,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 20:10:26,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 20:10:26,377 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 20:10:26,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:10:26" (1/1) ... [2020-04-18 20:10:26,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58d3afce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:10:26, skipping insertion in model container [2020-04-18 20:10:26,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:10:26" (1/1) ... [2020-04-18 20:10:26,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 20:10:26,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 20:10:27,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 20:10:27,237 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 20:10:27,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 20:10:27,775 INFO L208 MainTranslator]: Completed translation [2020-04-18 20:10:27,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:10:27 WrapperNode [2020-04-18 20:10:27,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 20:10:27,777 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 20:10:27,777 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 20:10:27,777 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 20:10:27,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:10:27" (1/1) ... [2020-04-18 20:10:27,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:10:27" (1/1) ... [2020-04-18 20:10:27,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 20:10:27,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 20:10:27,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 20:10:27,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 20:10:27,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:10:27" (1/1) ... [2020-04-18 20:10:27,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:10:27" (1/1) ... [2020-04-18 20:10:27,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:10:27" (1/1) ... [2020-04-18 20:10:27,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:10:27" (1/1) ... [2020-04-18 20:10:27,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:10:27" (1/1) ... [2020-04-18 20:10:27,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:10:27" (1/1) ... [2020-04-18 20:10:27,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:10:27" (1/1) ... [2020-04-18 20:10:27,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 20:10:27,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 20:10:27,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 20:10:27,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 20:10:27,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:10:27" (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 [2020-04-18 20:10:27,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 20:10:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-04-18 20:10:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-04-18 20:10:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-04-18 20:10:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 20:10:27,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 20:10:27,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 20:10:27,986 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-04-18 20:10:27,988 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-04-18 20:10:27,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 20:10:27,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-04-18 20:10:27,990 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 20:10:28,647 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 20:10:28,648 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-04-18 20:10:28,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:10:28 BoogieIcfgContainer [2020-04-18 20:10:28,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 20:10:28,654 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 20:10:28,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 20:10:28,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 20:10:28,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 08:10:26" (1/3) ... [2020-04-18 20:10:28,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ec6e91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:10:28, skipping insertion in model container [2020-04-18 20:10:28,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:10:27" (2/3) ... [2020-04-18 20:10:28,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ec6e91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:10:28, skipping insertion in model container [2020-04-18 20:10:28,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:10:28" (3/3) ... [2020-04-18 20:10:28,662 INFO L109 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2020-04-18 20:10:28,672 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 20:10:28,673 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 20:10:28,679 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-04-18 20:10:28,681 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 20:10:28,709 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:10:28,710 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:10:28,710 WARN L315 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:10:28,710 WARN L315 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:10:28,711 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:10:28,712 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:10:28,713 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:10:28,713 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:10:28,718 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:10:28,719 WARN L315 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:10:28,719 WARN L315 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:10:28,719 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:10:28,720 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:10:28,754 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 20:10:28,771 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 20:10:28,771 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 20:10:28,771 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 20:10:28,771 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 20:10:28,772 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 20:10:28,772 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 20:10:28,772 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 20:10:28,772 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 20:10:28,787 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 83 places, 85 transitions, 178 flow [2020-04-18 20:10:28,807 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 239 states. [2020-04-18 20:10:28,810 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states. [2020-04-18 20:10:28,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 20:10:28,817 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:10:28,818 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:10:28,818 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:10:28,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:10:28,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1989124765, now seen corresponding path program 1 times [2020-04-18 20:10:28,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:10:28,833 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [852961448] [2020-04-18 20:10:28,848 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:10:28,854 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-04-18 20:10:28,856 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-04-18 20:10:28,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 20:10:28,857 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:10:28,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:10:28,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1989124765, now seen corresponding path program 2 times [2020-04-18 20:10:28,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:10:28,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089197886] [2020-04-18 20:10:28,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:10:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:10:29,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:10:29,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089197886] [2020-04-18 20:10:29,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:10:29,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 20:10:29,380 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:10:29,383 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:10:29,397 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-04-18 20:10:29,397 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:10:29,435 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 20:10:29,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 20:10:29,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 20:10:29,442 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-04-18 20:10:29,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:10:29,500 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2020-04-18 20:10:29,500 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2020-04-18 20:10:29,501 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:10:29,502 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [852961448] [2020-04-18 20:10:29,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:10:29,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 20:10:29,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [852961448] [2020-04-18 20:10:29,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 20:10:29,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:10:29,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 20:10:29,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 20:10:29,510 INFO L87 Difference]: Start difference. First operand 239 states. Second operand 5 states. [2020-04-18 20:10:29,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:10:29,660 INFO L93 Difference]: Finished difference Result 237 states and 384 transitions. [2020-04-18 20:10:29,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 20:10:29,663 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-04-18 20:10:29,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:10:29,683 INFO L225 Difference]: With dead ends: 237 [2020-04-18 20:10:29,683 INFO L226 Difference]: Without dead ends: 181 [2020-04-18 20:10:29,686 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 20:10:29,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-04-18 20:10:29,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2020-04-18 20:10:29,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-04-18 20:10:29,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 292 transitions. [2020-04-18 20:10:29,744 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 292 transitions. Word has length 23 [2020-04-18 20:10:29,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:10:29,744 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 292 transitions. [2020-04-18 20:10:29,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 20:10:29,745 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 292 transitions. [2020-04-18 20:10:29,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-04-18 20:10:29,746 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:10:29,746 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:10:29,746 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:10:29,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:10:29,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1891934240, now seen corresponding path program 1 times [2020-04-18 20:10:29,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:10:29,747 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [797855418] [2020-04-18 20:10:29,748 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:10:29,749 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 31 transitions. [2020-04-18 20:10:29,749 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-04-18 20:10:29,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-04-18 20:10:29,750 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:10:29,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:10:29,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1891934240, now seen corresponding path program 2 times [2020-04-18 20:10:29,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:10:29,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23717867] [2020-04-18 20:10:29,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:10:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:10:29,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:10:29,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23717867] [2020-04-18 20:10:29,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:10:29,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 20:10:29,885 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:10:29,888 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:10:29,892 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 31 transitions. [2020-04-18 20:10:29,892 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:10:29,926 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 20:10:29,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 20:10:29,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 20:10:29,927 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 5 states. [2020-04-18 20:10:30,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:10:30,011 INFO L93 Difference]: Finished difference Result 32 states and 31 transitions. [2020-04-18 20:10:30,011 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 31 transitions. [2020-04-18 20:10:30,012 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:10:30,012 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [797855418] [2020-04-18 20:10:30,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:10:30,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 20:10:30,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [797855418] [2020-04-18 20:10:30,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 20:10:30,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:10:30,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 20:10:30,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 20:10:30,015 INFO L87 Difference]: Start difference. First operand 181 states and 292 transitions. Second operand 5 states. [2020-04-18 20:10:30,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:10:30,090 INFO L93 Difference]: Finished difference Result 179 states and 290 transitions. [2020-04-18 20:10:30,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 20:10:30,091 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-04-18 20:10:30,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:10:30,094 INFO L225 Difference]: With dead ends: 179 [2020-04-18 20:10:30,094 INFO L226 Difference]: Without dead ends: 173 [2020-04-18 20:10:30,096 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 20:10:30,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-04-18 20:10:30,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2020-04-18 20:10:30,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-04-18 20:10:30,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 284 transitions. [2020-04-18 20:10:30,111 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 284 transitions. Word has length 31 [2020-04-18 20:10:30,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:10:30,111 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 284 transitions. [2020-04-18 20:10:30,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 20:10:30,112 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 284 transitions. [2020-04-18 20:10:30,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-04-18 20:10:30,113 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:10:30,113 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:10:30,113 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:10:30,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:10:30,114 INFO L82 PathProgramCache]: Analyzing trace with hash -440006597, now seen corresponding path program 1 times [2020-04-18 20:10:30,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:10:30,114 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [4866487] [2020-04-18 20:10:30,115 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:10:30,116 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 34 transitions. [2020-04-18 20:10:30,116 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-04-18 20:10:30,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-04-18 20:10:30,117 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:10:30,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:10:30,118 INFO L82 PathProgramCache]: Analyzing trace with hash -440006597, now seen corresponding path program 2 times [2020-04-18 20:10:30,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:10:30,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292308004] [2020-04-18 20:10:30,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:10:30,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:10:30,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:10:30,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292308004] [2020-04-18 20:10:30,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:10:30,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 20:10:30,255 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:10:30,259 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:10:30,265 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 34 transitions. [2020-04-18 20:10:30,265 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:10:30,301 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 20:10:30,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 20:10:30,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 20:10:30,303 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 5 states. [2020-04-18 20:10:30,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:10:30,385 INFO L93 Difference]: Finished difference Result 35 states and 34 transitions. [2020-04-18 20:10:30,385 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 34 transitions. [2020-04-18 20:10:30,386 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:10:30,386 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [4866487] [2020-04-18 20:10:30,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:10:30,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 20:10:30,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [4866487] [2020-04-18 20:10:30,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 20:10:30,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:10:30,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 20:10:30,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 20:10:30,388 INFO L87 Difference]: Start difference. First operand 173 states and 284 transitions. Second operand 5 states. [2020-04-18 20:10:30,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:10:30,516 INFO L93 Difference]: Finished difference Result 274 states and 446 transitions. [2020-04-18 20:10:30,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 20:10:30,517 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-04-18 20:10:30,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:10:30,521 INFO L225 Difference]: With dead ends: 274 [2020-04-18 20:10:30,521 INFO L226 Difference]: Without dead ends: 274 [2020-04-18 20:10:30,524 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 20:10:30,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-04-18 20:10:30,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 181. [2020-04-18 20:10:30,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-04-18 20:10:30,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 296 transitions. [2020-04-18 20:10:30,559 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 296 transitions. Word has length 34 [2020-04-18 20:10:30,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:10:30,559 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 296 transitions. [2020-04-18 20:10:30,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 20:10:30,559 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 296 transitions. [2020-04-18 20:10:30,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 20:10:30,561 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:10:30,561 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:10:30,563 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:10:30,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:10:30,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1775474631, now seen corresponding path program 1 times [2020-04-18 20:10:30,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:10:30,564 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1729520825] [2020-04-18 20:10:30,565 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:10:30,567 INFO L259 McrAutomatonBuilder]: Finished intersection with 67 states and 94 transitions. [2020-04-18 20:10:30,568 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2020-04-18 20:10:30,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 20:10:30,570 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:10:30,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:10:30,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1843991013, now seen corresponding path program 2 times [2020-04-18 20:10:30,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:10:30,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114808331] [2020-04-18 20:10:30,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:10:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:10:30,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:10:30,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114808331] [2020-04-18 20:10:30,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:10:30,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 20:10:30,751 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:10:30,760 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:10:30,772 INFO L259 McrAutomatonBuilder]: Finished intersection with 67 states and 93 transitions. [2020-04-18 20:10:30,772 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:10:30,858 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 20:10:30,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:10:30,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 20:10:30,859 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 6 states. [2020-04-18 20:10:31,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:10:31,188 INFO L93 Difference]: Finished difference Result 76 states and 102 transitions. [2020-04-18 20:10:31,188 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 102 transitions. [2020-04-18 20:10:31,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 20:10:31,189 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 20:10:31,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:10:31,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1775474631, now seen corresponding path program 3 times [2020-04-18 20:10:31,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:10:31,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929460041] [2020-04-18 20:10:31,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:10:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 20:10:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 20:10:31,318 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 20:10:31,318 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 20:10:31,319 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 20:10:31,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 08:10:31 BasicIcfg [2020-04-18 20:10:31,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 20:10:31,392 INFO L168 Benchmark]: Toolchain (without parser) took 5043.20 ms. Allocated memory was 144.2 MB in the beginning and 252.2 MB in the end (delta: 108.0 MB). Free memory was 97.3 MB in the beginning and 200.5 MB in the end (delta: -103.2 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-04-18 20:10:31,393 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 144.2 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-18 20:10:31,400 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1406.21 ms. Allocated memory was 144.2 MB in the beginning and 233.8 MB in the end (delta: 89.7 MB). Free memory was 95.3 MB in the beginning and 173.6 MB in the end (delta: -78.3 MB). Peak memory consumption was 74.2 MB. Max. memory is 7.1 GB. [2020-04-18 20:10:31,401 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.39 ms. Allocated memory is still 233.8 MB. Free memory was 173.6 MB in the beginning and 170.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-04-18 20:10:31,402 INFO L168 Benchmark]: Boogie Preprocessor took 58.41 ms. Allocated memory is still 233.8 MB. Free memory was 170.6 MB in the beginning and 167.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-04-18 20:10:31,403 INFO L168 Benchmark]: RCFGBuilder took 743.70 ms. Allocated memory is still 233.8 MB. Free memory was 167.7 MB in the beginning and 130.0 MB in the end (delta: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 7.1 GB. [2020-04-18 20:10:31,403 INFO L168 Benchmark]: TraceAbstraction took 2733.80 ms. Allocated memory was 233.8 MB in the beginning and 252.2 MB in the end (delta: 18.4 MB). Free memory was 128.5 MB in the beginning and 200.5 MB in the end (delta: -72.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 20:10:31,418 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 144.2 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1406.21 ms. Allocated memory was 144.2 MB in the beginning and 233.8 MB in the end (delta: 89.7 MB). Free memory was 95.3 MB in the beginning and 173.6 MB in the end (delta: -78.3 MB). Peak memory consumption was 74.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 73.39 ms. Allocated memory is still 233.8 MB. Free memory was 173.6 MB in the beginning and 170.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.41 ms. Allocated memory is still 233.8 MB. Free memory was 170.6 MB in the beginning and 167.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 743.70 ms. Allocated memory is still 233.8 MB. Free memory was 167.7 MB in the beginning and 130.0 MB in the end (delta: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2733.80 ms. Allocated memory was 233.8 MB in the beginning and 252.2 MB in the end (delta: 18.4 MB). Free memory was 128.5 MB in the beginning and 200.5 MB in the end (delta: -72.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1682]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1683] 0 pthread_t t1; VAL [t1={3:0}] [L1684] 0 pthread_mutex_t mutex; VAL [mutex={2:0}, t1={3:0}] [L1685] 0 int pdev; VAL [mutex={2:0}, pdev=0, t1={3:0}] [L1694] 0 pdev = 1 VAL [mutex={2:0}, pdev=1, t1={3:0}] [L1682] COND FALSE 0 !(!expression) VAL [mutex={2:0}, pdev=1, t1={3:0}] [L1696] COND TRUE 0 __VERIFIER_nondet_int() VAL [mutex={2:0}, pdev=1, t1={3:0}] [L1697] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={2:0}, pdev=1, t1={3:0}] [L1698] 0 pdev = 2 VAL [arg={0:0}, mutex={2:0}, pdev=2, t1={3:0}] [L1688] 1 pdev = 6 VAL [arg={0:0}, arg={0:0}, mutex={2:0}, pdev=6, t1={3:0}] [L1682] COND TRUE 0 !expression VAL [arg={0:0}, arg={0:0}, mutex={2:0}, pdev=6, t1={3:0}] [L1682] 0 __VERIFIER_error() VAL [arg={0:0}, arg={0:0}, mutex={2:0}, pdev=6, t1={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 80 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 218 SDtfs, 253 SDslu, 428 SDs, 0 SdLazy, 82 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=239occurred 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, 3 MinimizatonAttempts, 93 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 incorrect! Received shutdown request...