/usr/bin/java -Xmx16000000000 -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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 20:39:02,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 20:39:02,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 20:39:02,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 20:39:02,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 20:39:02,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 20:39:02,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 20:39:02,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 20:39:02,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 20:39:02,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 20:39:02,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 20:39:02,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 20:39:02,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 20:39:02,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 20:39:02,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 20:39:02,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 20:39:02,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 20:39:02,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 20:39:02,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 20:39:02,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 20:39:02,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 20:39:03,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 20:39:03,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 20:39:03,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 20:39:03,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 20:39:03,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 20:39:03,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 20:39:03,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 20:39:03,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 20:39:03,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 20:39:03,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 20:39:03,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 20:39:03,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 20:39:03,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 20:39:03,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 20:39:03,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 20:39:03,015 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-SemanticLbe.epf [2021-03-11 20:39:03,046 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 20:39:03,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 20:39:03,048 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 20:39:03,048 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 20:39:03,048 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 20:39:03,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 20:39:03,048 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 20:39:03,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 20:39:03,049 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 20:39:03,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 20:39:03,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 20:39:03,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 20:39:03,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 20:39:03,050 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 20:39:03,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 20:39:03,050 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 20:39:03,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 20:39:03,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 20:39:03,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 20:39:03,050 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 20:39:03,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 20:39:03,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:39:03,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 20:39:03,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 20:39:03,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 20:39:03,051 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 20:39:03,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 20:39:03,051 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 20:39:03,052 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 20:39:03,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 20:39:03,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 20:39:03,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 20:39:03,315 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 20:39:03,315 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 20:39:03,316 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i [2021-03-11 20:39:03,360 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a63c74c9/5a354dadd9ce4940ab74db3b759fb5a9/FLAGd7e303bef [2021-03-11 20:39:03,785 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 20:39:03,785 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i [2021-03-11 20:39:03,803 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a63c74c9/5a354dadd9ce4940ab74db3b759fb5a9/FLAGd7e303bef [2021-03-11 20:39:04,102 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a63c74c9/5a354dadd9ce4940ab74db3b759fb5a9 [2021-03-11 20:39:04,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 20:39:04,107 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 20:39:04,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 20:39:04,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 20:39:04,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 20:39:04,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:39:04" (1/1) ... [2021-03-11 20:39:04,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@477760b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:39:04, skipping insertion in model container [2021-03-11 20:39:04,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:39:04" (1/1) ... [2021-03-11 20:39:04,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 20:39:04,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 20:39:04,473 WARN L226 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] [2021-03-11 20:39:04,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:39:04,486 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 20:39:04,508 WARN L226 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] [2021-03-11 20:39:04,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:39:04,679 INFO L208 MainTranslator]: Completed translation [2021-03-11 20:39:04,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:39:04 WrapperNode [2021-03-11 20:39:04,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 20:39:04,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 20:39:04,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 20:39:04,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 20:39:04,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:39:04" (1/1) ... [2021-03-11 20:39:04,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:39:04" (1/1) ... [2021-03-11 20:39:04,736 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 20:39:04,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 20:39:04,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 20:39:04,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 20:39:04,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:39:04" (1/1) ... [2021-03-11 20:39:04,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:39:04" (1/1) ... [2021-03-11 20:39:04,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:39:04" (1/1) ... [2021-03-11 20:39:04,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:39:04" (1/1) ... [2021-03-11 20:39:04,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:39:04" (1/1) ... [2021-03-11 20:39:04,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:39:04" (1/1) ... [2021-03-11 20:39:04,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:39:04" (1/1) ... [2021-03-11 20:39:04,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 20:39:04,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 20:39:04,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 20:39:04,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 20:39:04,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:39:04" (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 [2021-03-11 20:39:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 20:39:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 20:39:04,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 20:39:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-11 20:39:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-03-11 20:39:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-03-11 20:39:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 20:39:04,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 20:39:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 20:39:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-11 20:39:04,834 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-11 20:39:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 20:39:04,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 20:39:04,835 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 20:39:05,185 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 20:39:05,185 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-03-11 20:39:05,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:39:05 BoogieIcfgContainer [2021-03-11 20:39:05,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 20:39:05,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 20:39:05,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 20:39:05,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 20:39:05,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 08:39:04" (1/3) ... [2021-03-11 20:39:05,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4755cfdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:39:05, skipping insertion in model container [2021-03-11 20:39:05,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:39:04" (2/3) ... [2021-03-11 20:39:05,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4755cfdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:39:05, skipping insertion in model container [2021-03-11 20:39:05,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:39:05" (3/3) ... [2021-03-11 20:39:05,191 INFO L111 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2021-03-11 20:39:05,194 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 20:39:05,197 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-03-11 20:39:05,198 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 20:39:05,212 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:39:05,212 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:39:05,212 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:39:05,212 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:39:05,212 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:39:05,213 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:39:05,213 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:39:05,213 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:39:05,213 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:39:05,213 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:39:05,213 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:39:05,213 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:39:05,213 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:39:05,213 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:39:05,213 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:39:05,214 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:39:05,215 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:39:05,215 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:39:05,215 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:39:05,215 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:39:05,215 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:39:05,218 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-03-11 20:39:05,230 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-11 20:39:05,242 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 20:39:05,242 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 20:39:05,242 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 20:39:05,242 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 20:39:05,242 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 20:39:05,242 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 20:39:05,242 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 20:39:05,242 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 20:39:05,249 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 87 transitions, 182 flow [2021-03-11 20:39:05,269 INFO L129 PetriNetUnfolder]: 4/98 cut-off events. [2021-03-11 20:39:05,270 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-11 20:39:05,271 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 98 events. 4/98 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 147 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 58. Up to 3 conditions per place. [2021-03-11 20:39:05,271 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 87 transitions, 182 flow [2021-03-11 20:39:05,274 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 72 transitions, 150 flow [2021-03-11 20:39:05,276 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 20:39:05,282 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 72 transitions, 150 flow [2021-03-11 20:39:05,283 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 72 transitions, 150 flow [2021-03-11 20:39:05,284 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 75 places, 72 transitions, 150 flow [2021-03-11 20:39:05,291 INFO L129 PetriNetUnfolder]: 1/72 cut-off events. [2021-03-11 20:39:05,291 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-11 20:39:05,291 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 72 events. 1/72 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 52 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-03-11 20:39:05,292 INFO L116 LiptonReduction]: Number of co-enabled transitions 168 [2021-03-11 20:39:07,910 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 103 [2021-03-11 20:39:08,196 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 105 [2021-03-11 20:39:08,470 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 95 [2021-03-11 20:39:08,720 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 95 [2021-03-11 20:39:08,964 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-03-11 20:39:09,113 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-03-11 20:39:09,381 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 127 [2021-03-11 20:39:09,519 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2021-03-11 20:39:09,529 INFO L131 LiptonReduction]: Checked pairs total: 233 [2021-03-11 20:39:09,530 INFO L133 LiptonReduction]: Total number of compositions: 76 [2021-03-11 20:39:09,531 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4257 [2021-03-11 20:39:09,535 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-11 20:39:09,535 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:39:09,535 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:39:09,535 INFO L255 CegarLoopForPetriNet]: trace histogram [1] [2021-03-11 20:39:09,535 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:39:09,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:39:09,538 INFO L82 PathProgramCache]: Analyzing trace with hash 337, now seen corresponding path program 1 times [2021-03-11 20:39:09,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:39:09,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195885270] [2021-03-11 20:39:09,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:39:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:39:09,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:39:09,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195885270] [2021-03-11 20:39:09,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:39:09,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2021-03-11 20:39:09,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250678436] [2021-03-11 20:39:09,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-11 20:39:09,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:39:09,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-11 20:39:09,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 20:39:09,700 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 163 [2021-03-11 20:39:09,702 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 10 transitions, 26 flow. Second operand has 2 states, 2 states have (on average 144.5) internal successors, (289), 2 states have internal predecessors, (289), 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) [2021-03-11 20:39:09,702 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:39:09,702 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 163 [2021-03-11 20:39:09,702 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:39:09,705 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-11 20:39:09,705 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-11 20:39:09,705 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13 conditions, 7 events. 0/7 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 6 event pairs, 0 based on Foata normal form. 2/8 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-11 20:39:09,706 INFO L132 encePairwiseOnDemand]: 160/163 looper letters, 0 selfloop transitions, 0 changer transitions 2/7 dead transitions. [2021-03-11 20:39:09,706 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 7 transitions, 20 flow [2021-03-11 20:39:09,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-11 20:39:09,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-03-11 20:39:09,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 291 transitions. [2021-03-11 20:39:09,713 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8926380368098159 [2021-03-11 20:39:09,713 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 291 transitions. [2021-03-11 20:39:09,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 291 transitions. [2021-03-11 20:39:09,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:39:09,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 291 transitions. [2021-03-11 20:39:09,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 145.5) internal successors, (291), 2 states have internal predecessors, (291), 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) [2021-03-11 20:39:09,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 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) [2021-03-11 20:39:09,727 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 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) [2021-03-11 20:39:09,728 INFO L185 Difference]: Start difference. First operand has 14 places, 10 transitions, 26 flow. Second operand 2 states and 291 transitions. [2021-03-11 20:39:09,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 7 transitions, 20 flow [2021-03-11 20:39:09,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 7 transitions, 16 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:39:09,730 INFO L241 Difference]: Finished difference. Result has 10 places, 5 transitions, 11 flow [2021-03-11 20:39:09,733 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=16, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=11, PETRI_PLACES=10, PETRI_TRANSITIONS=5} [2021-03-11 20:39:09,735 INFO L335 CegarLoopForPetriNet]: 14 programPoint places, -4 predicate places. [2021-03-11 20:39:09,736 INFO L480 AbstractCegarLoop]: Abstraction has has 10 places, 5 transitions, 11 flow [2021-03-11 20:39:09,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 144.5) internal successors, (289), 2 states have internal predecessors, (289), 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) [2021-03-11 20:39:09,736 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:39:09,741 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-03-11 20:39:09,741 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 20:39:09,742 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:39:09,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:39:09,742 INFO L82 PathProgramCache]: Analyzing trace with hash 10238452, now seen corresponding path program 1 times [2021-03-11 20:39:09,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:39:09,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774744128] [2021-03-11 20:39:09,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:39:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:39:09,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:39:09,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:39:09,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:39:09,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:39:09,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:39:09,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774744128] [2021-03-11 20:39:09,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:39:09,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:39:09,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77068039] [2021-03-11 20:39:09,870 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:39:09,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:39:09,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:39:09,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:39:09,872 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 163 [2021-03-11 20:39:09,872 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 10 places, 5 transitions, 11 flow. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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) [2021-03-11 20:39:09,873 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:39:09,873 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 163 [2021-03-11 20:39:09,873 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:39:09,883 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-11 20:39:09,883 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:39:09,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17 conditions, 7 events. 0/7 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 2/9 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-11 20:39:09,883 INFO L132 encePairwiseOnDemand]: 160/163 looper letters, 2 selfloop transitions, 2 changer transitions 1/6 dead transitions. [2021-03-11 20:39:09,883 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 6 transitions, 23 flow [2021-03-11 20:39:09,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:39:09,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:39:09,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 321 transitions. [2021-03-11 20:39:09,885 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.656441717791411 [2021-03-11 20:39:09,885 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 321 transitions. [2021-03-11 20:39:09,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 321 transitions. [2021-03-11 20:39:09,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:39:09,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 321 transitions. [2021-03-11 20:39:09,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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) [2021-03-11 20:39:09,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 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) [2021-03-11 20:39:09,887 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 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) [2021-03-11 20:39:09,888 INFO L185 Difference]: Start difference. First operand has 10 places, 5 transitions, 11 flow. Second operand 3 states and 321 transitions. [2021-03-11 20:39:09,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 6 transitions, 23 flow [2021-03-11 20:39:09,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 23 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-11 20:39:09,888 INFO L241 Difference]: Finished difference. Result has 11 places, 5 transitions, 19 flow [2021-03-11 20:39:09,888 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=11, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=19, PETRI_PLACES=11, PETRI_TRANSITIONS=5} [2021-03-11 20:39:09,889 INFO L335 CegarLoopForPetriNet]: 14 programPoint places, -3 predicate places. [2021-03-11 20:39:09,889 INFO L480 AbstractCegarLoop]: Abstraction has has 11 places, 5 transitions, 19 flow [2021-03-11 20:39:09,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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) [2021-03-11 20:39:09,889 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:39:09,889 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-11 20:39:09,889 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 20:39:09,889 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:39:09,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:39:09,889 INFO L82 PathProgramCache]: Analyzing trace with hash 317396806, now seen corresponding path program 1 times [2021-03-11 20:39:09,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:39:09,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244082494] [2021-03-11 20:39:09,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:39:09,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 20:39:09,912 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 20:39:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 20:39:09,945 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 20:39:09,968 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-11 20:39:09,969 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-03-11 20:39:09,969 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 20:39:09,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 08:39:09 BasicIcfg [2021-03-11 20:39:09,990 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 20:39:09,991 INFO L168 Benchmark]: Toolchain (without parser) took 5886.39 ms. Allocated memory was 255.9 MB in the beginning and 413.1 MB in the end (delta: 157.3 MB). Free memory was 232.8 MB in the beginning and 221.1 MB in the end (delta: 11.7 MB). Peak memory consumption was 167.5 MB. Max. memory is 16.0 GB. [2021-03-11 20:39:09,992 INFO L168 Benchmark]: CDTParser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 238.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:39:09,993 INFO L168 Benchmark]: CACSL2BoogieTranslator took 572.70 ms. Allocated memory was 255.9 MB in the beginning and 343.9 MB in the end (delta: 88.1 MB). Free memory was 232.2 MB in the beginning and 318.7 MB in the end (delta: -86.5 MB). Peak memory consumption was 64.6 MB. Max. memory is 16.0 GB. [2021-03-11 20:39:09,993 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.42 ms. Allocated memory is still 343.9 MB. Free memory was 318.7 MB in the beginning and 315.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:39:09,994 INFO L168 Benchmark]: Boogie Preprocessor took 43.57 ms. Allocated memory is still 343.9 MB. Free memory was 315.4 MB in the beginning and 313.5 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:39:09,998 INFO L168 Benchmark]: RCFGBuilder took 401.06 ms. Allocated memory is still 343.9 MB. Free memory was 312.4 MB in the beginning and 271.5 MB in the end (delta: 40.9 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.0 GB. [2021-03-11 20:39:09,998 INFO L168 Benchmark]: TraceAbstraction took 4802.78 ms. Allocated memory was 343.9 MB in the beginning and 413.1 MB in the end (delta: 69.2 MB). Free memory was 271.5 MB in the beginning and 221.1 MB in the end (delta: 50.4 MB). Peak memory consumption was 119.6 MB. Max. memory is 16.0 GB. [2021-03-11 20:39:10,003 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 238.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 572.70 ms. Allocated memory was 255.9 MB in the beginning and 343.9 MB in the end (delta: 88.1 MB). Free memory was 232.2 MB in the beginning and 318.7 MB in the end (delta: -86.5 MB). Peak memory consumption was 64.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 58.42 ms. Allocated memory is still 343.9 MB. Free memory was 318.7 MB in the beginning and 315.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 43.57 ms. Allocated memory is still 343.9 MB. Free memory was 315.4 MB in the beginning and 313.5 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 401.06 ms. Allocated memory is still 343.9 MB. Free memory was 312.4 MB in the beginning and 271.5 MB in the end (delta: 40.9 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4802.78 ms. Allocated memory was 343.9 MB in the beginning and 413.1 MB in the end (delta: 69.2 MB). Free memory was 271.5 MB in the beginning and 221.1 MB in the end (delta: 50.4 MB). Peak memory consumption was 119.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4246.5ms, 75 PlacesBefore, 14 PlacesAfterwards, 72 TransitionsBefore, 10 TransitionsAfterwards, 168 CoEnabledTransitionPairs, 8 FixpointIterations, 56 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 76 TotalNumberOfCompositions, 233 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 176, positive: 142, positive conditional: 0, positive unconditional: 142, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 128, positive: 114, positive conditional: 0, positive unconditional: 114, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 128, positive: 113, positive conditional: 0, positive unconditional: 113, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 15, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 48, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 176, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 128, unknown conditional: 0, unknown unconditional: 128] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - 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; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [L1709] 0 pdev = 1 [L1695] COND FALSE 0 !(!expression) [L1711] COND TRUE 0 __VERIFIER_nondet_int() [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={6:0}, pdev=1, t1={7:0}] [L1714] 0 pdev = 2 VAL [arg={0:0}, mutex={6:0}, pdev=2, t1={7:0}] [L1702] 1 pdev = 6 [L1705] 1 return 0; [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [\result={0:0}, arg={0:0}, arg={0:0}, mutex={6:0}, pdev=6, t1={7:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 83 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 4729.8ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 55.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4291.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 5, 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: 4.1ms SsaConstructionTime, 72.2ms SatisfiabilityAnalysisTime, 91.7ms InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...