/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 07:37:47,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 07:37:47,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 07:37:47,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-13 07:37:47,796 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-13 07:37:47,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-13 07:37:47,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-13 07:37:47,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-13 07:37:47,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-13 07:37:47,800 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-13 07:37:47,801 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-13 07:37:47,802 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-13 07:37:47,802 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 07:37:47,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 07:37:47,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 07:37:47,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 07:37:47,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 07:37:47,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 07:37:47,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 07:37:47,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 07:37:47,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 07:37:47,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 07:37:47,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 07:37:47,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 07:37:47,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-13 07:37:47,814 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-13 07:37:47,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-13 07:37:47,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-13 07:37:47,815 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-13 07:37:47,816 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-13 07:37:47,816 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-13 07:37:47,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-13 07:37:47,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-13 07:37:47,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 07:37:47,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 07:37:47,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 07:37:47,822 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-PN-NoLbe.epf [2021-06-13 07:37:47,836 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 07:37:47,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 07:37:47,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 07:37:47,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 07:37:47,838 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 07:37:47,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 07:37:47,838 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 07:37:47,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 07:37:47,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 07:37:47,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 07:37:47,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 07:37:47,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 07:37:47,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 07:37:47,839 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 07:37:47,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 07:37:47,839 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 07:37:47,839 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 07:37:47,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 07:37:47,839 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 07:37:47,839 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 07:37:47,839 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 07:37:47,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 07:37:47,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 07:37:47,840 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 07:37:47,840 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 07:37:47,840 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 07:37:47,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 07:37:47,840 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 07:37:47,854 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 07:37:47,854 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 07:37:48,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 07:37:48,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 07:37:48,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 07:37:48,096 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-13 07:37:48,096 INFO L275 PluginConnector]: CDTParser initialized [2021-06-13 07:37:48,097 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i [2021-06-13 07:37:48,139 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76bcaa008/3d5d22af04934332a456a23b00dd849f/FLAG1bf6336ab [2021-06-13 07:37:48,572 INFO L306 CDTParser]: Found 1 translation units. [2021-06-13 07:37:48,573 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i [2021-06-13 07:37:48,587 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76bcaa008/3d5d22af04934332a456a23b00dd849f/FLAG1bf6336ab [2021-06-13 07:37:48,596 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76bcaa008/3d5d22af04934332a456a23b00dd849f [2021-06-13 07:37:48,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 07:37:48,598 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-13 07:37:48,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-13 07:37:48,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-13 07:37:48,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-13 07:37:48,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:37:48" (1/1) ... [2021-06-13 07:37:48,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71a16208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:48, skipping insertion in model container [2021-06-13 07:37:48,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:37:48" (1/1) ... [2021-06-13 07:37:48,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-13 07:37:48,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-13 07:37:49,084 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i[76153,76166] [2021-06-13 07:37:49,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:37:49,099 INFO L203 MainTranslator]: Completed pre-run [2021-06-13 07:37:49,121 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i[76153,76166] [2021-06-13 07:37:49,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:37:49,302 INFO L208 MainTranslator]: Completed translation [2021-06-13 07:37:49,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:49 WrapperNode [2021-06-13 07:37:49,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-13 07:37:49,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 07:37:49,303 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 07:37:49,303 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 07:37:49,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:49" (1/1) ... [2021-06-13 07:37:49,333 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:49" (1/1) ... [2021-06-13 07:37:49,357 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 07:37:49,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 07:37:49,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 07:37:49,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 07:37:49,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:49" (1/1) ... [2021-06-13 07:37:49,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:49" (1/1) ... [2021-06-13 07:37:49,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:49" (1/1) ... [2021-06-13 07:37:49,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:49" (1/1) ... [2021-06-13 07:37:49,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:49" (1/1) ... [2021-06-13 07:37:49,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:49" (1/1) ... [2021-06-13 07:37:49,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:49" (1/1) ... [2021-06-13 07:37:49,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 07:37:49,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 07:37:49,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 07:37:49,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 07:37:49,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:49" (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 [2021-06-13 07:37:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-13 07:37:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-13 07:37:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-13 07:37:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-13 07:37:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-06-13 07:37:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-06-13 07:37:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 07:37:49,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 07:37:49,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-13 07:37:49,443 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-13 07:37:49,443 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-13 07:37:49,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-13 07:37:49,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-13 07:37:49,444 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 07:37:49,823 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 07:37:49,823 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-06-13 07:37:49,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:37:49 BoogieIcfgContainer [2021-06-13 07:37:49,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 07:37:49,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 07:37:49,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 07:37:49,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 07:37:49,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.06 07:37:48" (1/3) ... [2021-06-13 07:37:49,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2c34b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:37:49, skipping insertion in model container [2021-06-13 07:37:49,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:49" (2/3) ... [2021-06-13 07:37:49,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2c34b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:37:49, skipping insertion in model container [2021-06-13 07:37:49,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:37:49" (3/3) ... [2021-06-13 07:37:49,829 INFO L111 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2021-06-13 07:37:49,833 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 07:37:49,833 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-06-13 07:37:49,834 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 07:37:49,850 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:49,850 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:49,850 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:49,850 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:49,851 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:49,851 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:49,851 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:49,851 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:49,851 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:49,851 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:49,851 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:49,851 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:49,852 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:49,852 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:49,852 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:49,852 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:49,853 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:49,854 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:49,854 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:49,854 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:49,854 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:49,859 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-06-13 07:37:49,874 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-06-13 07:37:49,887 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 07:37:49,887 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 07:37:49,887 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 07:37:49,887 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 07:37:49,887 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 07:37:49,888 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 07:37:49,888 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 07:37:49,888 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 07:37:49,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 90 transitions, 188 flow [2021-06-13 07:37:49,918 INFO L129 PetriNetUnfolder]: 4/101 cut-off events. [2021-06-13 07:37:49,918 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-06-13 07:37:49,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 101 events. 4/101 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 139 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 60. Up to 3 conditions per place. [2021-06-13 07:37:49,920 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 90 transitions, 188 flow [2021-06-13 07:37:49,923 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 75 transitions, 156 flow [2021-06-13 07:37:49,928 INFO L129 PetriNetUnfolder]: 1/30 cut-off events. [2021-06-13 07:37:49,928 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:37:49,928 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:37:49,929 INFO L255 CegarLoopForPetriNet]: 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] [2021-06-13 07:37:49,929 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:37:49,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:37:49,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1156883515, now seen corresponding path program 1 times [2021-06-13 07:37:49,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:37:49,939 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509097378] [2021-06-13 07:37:49,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:37:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:37:50,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:50,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:50,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:50,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:50,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:50,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-06-13 07:37:50,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:50,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-06-13 07:37:50,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:50,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:50,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:37:50,147 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:37:50,147 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509097378] [2021-06-13 07:37:50,148 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509097378] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:37:50,148 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:37:50,148 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-13 07:37:50,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391335467] [2021-06-13 07:37:50,153 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-13 07:37:50,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:37:50,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-13 07:37:50,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-13 07:37:50,164 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 90 [2021-06-13 07:37:50,167 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 75 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:50,167 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:37:50,167 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 90 [2021-06-13 07:37:50,168 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:37:50,232 INFO L129 PetriNetUnfolder]: 3/83 cut-off events. [2021-06-13 07:37:50,232 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-06-13 07:37:50,232 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 83 events. 3/83 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 92 event pairs, 1 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 42. Up to 11 conditions per place. [2021-06-13 07:37:50,233 INFO L132 encePairwiseOnDemand]: 78/90 looper letters, 12 selfloop transitions, 11 changer transitions 0/74 dead transitions. [2021-06-13 07:37:50,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 74 transitions, 200 flow [2021-06-13 07:37:50,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-13 07:37:50,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-13 07:37:50,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 451 transitions. [2021-06-13 07:37:50,242 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7158730158730159 [2021-06-13 07:37:50,243 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 451 transitions. [2021-06-13 07:37:50,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 451 transitions. [2021-06-13 07:37:50,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:37:50,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 451 transitions. [2021-06-13 07:37:50,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 64.42857142857143) internal successors, (451), 7 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:50,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:50,252 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:50,254 INFO L185 Difference]: Start difference. First operand has 78 places, 75 transitions, 156 flow. Second operand 7 states and 451 transitions. [2021-06-13 07:37:50,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 74 transitions, 200 flow [2021-06-13 07:37:50,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 74 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-13 07:37:50,258 INFO L241 Difference]: Finished difference. Result has 80 places, 73 transitions, 178 flow [2021-06-13 07:37:50,259 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=178, PETRI_PLACES=80, PETRI_TRANSITIONS=73} [2021-06-13 07:37:50,260 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 2 predicate places. [2021-06-13 07:37:50,260 INFO L482 AbstractCegarLoop]: Abstraction has has 80 places, 73 transitions, 178 flow [2021-06-13 07:37:50,260 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:50,260 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:37:50,260 INFO L255 CegarLoopForPetriNet]: 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] [2021-06-13 07:37:50,261 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 07:37:50,261 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:37:50,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:37:50,261 INFO L82 PathProgramCache]: Analyzing trace with hash 145435750, now seen corresponding path program 1 times [2021-06-13 07:37:50,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:37:50,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681635713] [2021-06-13 07:37:50,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:37:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:37:50,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:50,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:50,321 INFO L142 QuantifierPusher]: treesize reduction 11, result has 21.4 percent of original size [2021-06-13 07:37:50,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:50,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:50,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-06-13 07:37:50,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:50,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-06-13 07:37:50,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:50,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:50,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:37:50,332 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:37:50,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681635713] [2021-06-13 07:37:50,332 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681635713] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:37:50,332 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:37:50,332 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-13 07:37:50,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321298167] [2021-06-13 07:37:50,333 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-13 07:37:50,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:37:50,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-13 07:37:50,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-13 07:37:50,334 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 90 [2021-06-13 07:37:50,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 73 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 63.2) internal successors, (316), 5 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:50,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:37:50,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 90 [2021-06-13 07:37:50,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:37:50,386 INFO L129 PetriNetUnfolder]: 3/86 cut-off events. [2021-06-13 07:37:50,386 INFO L130 PetriNetUnfolder]: For 9/11 co-relation queries the response was YES. [2021-06-13 07:37:50,387 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 86 events. 3/86 cut-off events. For 9/11 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 92 event pairs, 0 based on Foata normal form. 1/86 useless extension candidates. Maximal degree in co-relation 38. Up to 12 conditions per place. [2021-06-13 07:37:50,387 INFO L132 encePairwiseOnDemand]: 80/90 looper letters, 14 selfloop transitions, 5 changer transitions 6/73 dead transitions. [2021-06-13 07:37:50,387 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 73 transitions, 228 flow [2021-06-13 07:37:50,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-13 07:37:50,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-13 07:37:50,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 449 transitions. [2021-06-13 07:37:50,389 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7126984126984127 [2021-06-13 07:37:50,389 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 449 transitions. [2021-06-13 07:37:50,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 449 transitions. [2021-06-13 07:37:50,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:37:50,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 449 transitions. [2021-06-13 07:37:50,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 64.14285714285714) internal successors, (449), 7 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:50,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:50,392 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:50,393 INFO L185 Difference]: Start difference. First operand has 80 places, 73 transitions, 178 flow. Second operand 7 states and 449 transitions. [2021-06-13 07:37:50,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 73 transitions, 228 flow [2021-06-13 07:37:50,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 73 transitions, 210 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-06-13 07:37:50,394 INFO L241 Difference]: Finished difference. Result has 79 places, 65 transitions, 152 flow [2021-06-13 07:37:50,394 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=152, PETRI_PLACES=79, PETRI_TRANSITIONS=65} [2021-06-13 07:37:50,395 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 1 predicate places. [2021-06-13 07:37:50,395 INFO L482 AbstractCegarLoop]: Abstraction has has 79 places, 65 transitions, 152 flow [2021-06-13 07:37:50,395 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 63.2) internal successors, (316), 5 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:50,395 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:37:50,395 INFO L255 CegarLoopForPetriNet]: 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] [2021-06-13 07:37:50,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 07:37:50,396 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:37:50,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:37:50,396 INFO L82 PathProgramCache]: Analyzing trace with hash -106359310, now seen corresponding path program 1 times [2021-06-13 07:37:50,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:37:50,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357005400] [2021-06-13 07:37:50,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:37:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:37:50,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:50,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:50,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:50,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:50,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:37:50,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:37:50,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357005400] [2021-06-13 07:37:50,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357005400] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:37:50,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:37:50,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-13 07:37:50,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841046998] [2021-06-13 07:37:50,484 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 07:37:50,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:37:50,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 07:37:50,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 07:37:50,486 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2021-06-13 07:37:50,487 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 65 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:50,487 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:37:50,487 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2021-06-13 07:37:50,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:37:50,522 INFO L129 PetriNetUnfolder]: 2/87 cut-off events. [2021-06-13 07:37:50,522 INFO L130 PetriNetUnfolder]: For 5/7 co-relation queries the response was YES. [2021-06-13 07:37:50,523 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 87 events. 2/87 cut-off events. For 5/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 108 event pairs, 0 based on Foata normal form. 2/88 useless extension candidates. Maximal degree in co-relation 23. Up to 11 conditions per place. [2021-06-13 07:37:50,524 INFO L132 encePairwiseOnDemand]: 85/90 looper letters, 8 selfloop transitions, 5 changer transitions 0/67 dead transitions. [2021-06-13 07:37:50,524 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 67 transitions, 184 flow [2021-06-13 07:37:50,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 07:37:50,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 07:37:50,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2021-06-13 07:37:50,525 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8592592592592593 [2021-06-13 07:37:50,525 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 232 transitions. [2021-06-13 07:37:50,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 232 transitions. [2021-06-13 07:37:50,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:37:50,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 232 transitions. [2021-06-13 07:37:50,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:50,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:50,526 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:50,526 INFO L185 Difference]: Start difference. First operand has 79 places, 65 transitions, 152 flow. Second operand 3 states and 232 transitions. [2021-06-13 07:37:50,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 67 transitions, 184 flow [2021-06-13 07:37:50,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 67 transitions, 172 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-13 07:37:50,529 INFO L241 Difference]: Finished difference. Result has 71 places, 67 transitions, 172 flow [2021-06-13 07:37:50,529 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=71, PETRI_TRANSITIONS=67} [2021-06-13 07:37:50,529 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, -7 predicate places. [2021-06-13 07:37:50,529 INFO L482 AbstractCegarLoop]: Abstraction has has 71 places, 67 transitions, 172 flow [2021-06-13 07:37:50,530 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:50,530 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:37:50,530 INFO L255 CegarLoopForPetriNet]: 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, 1, 1, 1] [2021-06-13 07:37:50,530 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 07:37:50,530 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:37:50,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:37:50,531 INFO L82 PathProgramCache]: Analyzing trace with hash 926630384, now seen corresponding path program 1 times [2021-06-13 07:37:50,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:37:50,531 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120174832] [2021-06-13 07:37:50,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:37:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-13 07:37:50,561 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-13 07:37:50,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-13 07:37:50,598 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-13 07:37:50,623 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-13 07:37:50,623 INFO L573 BasicCegarLoop]: Counterexample might be feasible [2021-06-13 07:37:50,623 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 07:37:50,625 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 07:37:50,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 07:37:50 BasicIcfg [2021-06-13 07:37:50,661 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 07:37:50,662 INFO L168 Benchmark]: Toolchain (without parser) took 2063.38 ms. Allocated memory was 177.2 MB in the beginning and 247.5 MB in the end (delta: 70.3 MB). Free memory was 140.1 MB in the beginning and 189.2 MB in the end (delta: -49.2 MB). Peak memory consumption was 21.3 MB. Max. memory is 8.0 GB. [2021-06-13 07:37:50,662 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 177.2 MB. Free memory is still 159.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 07:37:50,662 INFO L168 Benchmark]: CACSL2BoogieTranslator took 703.21 ms. Allocated memory is still 177.2 MB. Free memory was 139.9 MB in the beginning and 84.5 MB in the end (delta: 55.4 MB). Peak memory consumption was 55.8 MB. Max. memory is 8.0 GB. [2021-06-13 07:37:50,663 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.29 ms. Allocated memory was 177.2 MB in the beginning and 247.5 MB in the end (delta: 70.3 MB). Free memory was 84.5 MB in the beginning and 223.8 MB in the end (delta: -139.3 MB). Peak memory consumption was 2.8 MB. Max. memory is 8.0 GB. [2021-06-13 07:37:50,663 INFO L168 Benchmark]: Boogie Preprocessor took 29.89 ms. Allocated memory is still 247.5 MB. Free memory was 223.8 MB in the beginning and 221.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:37:50,664 INFO L168 Benchmark]: RCFGBuilder took 431.91 ms. Allocated memory is still 247.5 MB. Free memory was 221.2 MB in the beginning and 179.7 MB in the end (delta: 41.4 MB). Peak memory consumption was 41.9 MB. Max. memory is 8.0 GB. [2021-06-13 07:37:50,664 INFO L168 Benchmark]: TraceAbstraction took 835.66 ms. Allocated memory is still 247.5 MB. Free memory was 179.2 MB in the beginning and 189.2 MB in the end (delta: -10.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 07:37:50,666 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 177.2 MB. Free memory is still 159.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 703.21 ms. Allocated memory is still 177.2 MB. Free memory was 139.9 MB in the beginning and 84.5 MB in the end (delta: 55.4 MB). Peak memory consumption was 55.8 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 54.29 ms. Allocated memory was 177.2 MB in the beginning and 247.5 MB in the end (delta: 70.3 MB). Free memory was 84.5 MB in the beginning and 223.8 MB in the end (delta: -139.3 MB). Peak memory consumption was 2.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.89 ms. Allocated memory is still 247.5 MB. Free memory was 223.8 MB in the beginning and 221.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 431.91 ms. Allocated memory is still 247.5 MB. Free memory was 221.2 MB in the beginning and 179.7 MB in the end (delta: 41.4 MB). Peak memory consumption was 41.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 835.66 ms. Allocated memory is still 247.5 MB. Free memory was 179.2 MB in the beginning and 189.2 MB in the end (delta: -10.0 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1696] 0 pthread_t t1; VAL [t1={7:0}] [L1697] 0 pthread_mutex_t mutex; VAL [mutex={3:0}, t1={7:0}] [L1698] 0 int pdev; VAL [mutex={3:0}, pdev=0, t1={7:0}] [L1709] 0 pdev = 1 VAL [mutex={3:0}, pdev=1, t1={7:0}] [L1695] COND FALSE 0 !(!expression) VAL [mutex={3:0}, pdev=1, t1={7:0}] [L1711] COND TRUE 0 __VERIFIER_nondet_int() VAL [mutex={3:0}, pdev=1, t1={7:0}] [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={3:0}, pdev=1, t1={7:0}] [L1714] 0 pdev = 2 VAL [arg={0:0}, mutex={3:0}, pdev=2, t1={7:0}] [L1702] 1 pdev = 6 VAL [arg={0:0}, arg={0:0}, mutex={3:0}, pdev=6, t1={7:0}] [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [arg={0:0}, arg={0:0}, mutex={3:0}, pdev=6, t1={7:0}] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 3 procedures, 95 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 739.0ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 205.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 35.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 45 SDtfs, 34 SDslu, 35 SDs, 0 SdLazy, 60 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 39.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 66.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=178occurred in iteration=1, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.4ms SsaConstructionTime, 80.3ms SatisfiabilityAnalysisTime, 195.9ms InterpolantComputationTime, 140 NumberOfCodeBlocks, 140 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 120 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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 incorrect! Received shutdown request...