/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-OGIterative-Hitting.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 12:11:03,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 12:11:03,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 12:11:03,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-13 12:11:03,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-13 12:11:03,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-13 12:11:03,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-13 12:11:03,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-13 12:11:03,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-13 12:11:03,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-13 12:11:03,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-13 12:11:03,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-13 12:11:03,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 12:11:03,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 12:11:03,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 12:11:03,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 12:11:03,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 12:11:03,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 12:11:03,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 12:11:03,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 12:11:03,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 12:11:03,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 12:11:03,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 12:11:03,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 12:11:03,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 12:11:03,425 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-13 12:11:03,425 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-13 12:11:03,426 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-13 12:11:03,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-13 12:11:03,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-13 12:11:03,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-13 12:11:03,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-13 12:11:03,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-13 12:11:03,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 12:11:03,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 12:11:03,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 12:11:03,446 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-OGIterative-Hitting.epf [2021-08-13 12:11:03,461 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 12:11:03,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 12:11:03,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 12:11:03,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 12:11:03,463 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 12:11:03,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 12:11:03,463 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 12:11:03,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 12:11:03,463 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 12:11:03,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 12:11:03,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 12:11:03,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 12:11:03,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 12:11:03,464 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 12:11:03,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 12:11:03,464 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 12:11:03,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 12:11:03,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 12:11:03,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 12:11:03,465 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 12:11:03,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 12:11:03,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 12:11:03,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 12:11:03,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 12:11:03,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 12:11:03,465 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 12:11:03,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 12:11:03,466 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 12:11:03,466 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 12:11:03,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 12:11:03,466 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 12:11:03,466 INFO L138 SettingsManager]: * Use hitting sets in computation of OwickiGries annotation=true [2021-08-13 12:11:03,466 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 12:11:03,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 12:11:03,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 12:11:03,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 12:11:03,758 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-13 12:11:03,759 INFO L275 PluginConnector]: CDTParser initialized [2021-08-13 12:11:03,760 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i [2021-08-13 12:11:03,805 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40e9407d7/69fe1ad5365e48ccb24df000be90ced3/FLAGe42596724 [2021-08-13 12:11:04,337 INFO L306 CDTParser]: Found 1 translation units. [2021-08-13 12:11:04,337 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i [2021-08-13 12:11:04,356 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40e9407d7/69fe1ad5365e48ccb24df000be90ced3/FLAGe42596724 [2021-08-13 12:11:04,630 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40e9407d7/69fe1ad5365e48ccb24df000be90ced3 [2021-08-13 12:11:04,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 12:11:04,633 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-13 12:11:04,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-13 12:11:04,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-13 12:11:04,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-13 12:11:04,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 12:11:04" (1/1) ... [2021-08-13 12:11:04,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b9ce1a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:11:04, skipping insertion in model container [2021-08-13 12:11:04,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 12:11:04" (1/1) ... [2021-08-13 12:11:04,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-13 12:11:04,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-13 12:11:05,237 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] [2021-08-13 12:11:05,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 12:11:05,264 INFO L203 MainTranslator]: Completed pre-run [2021-08-13 12:11:05,306 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] [2021-08-13 12:11:05,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 12:11:05,517 INFO L208 MainTranslator]: Completed translation [2021-08-13 12:11:05,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:11:05 WrapperNode [2021-08-13 12:11:05,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-13 12:11:05,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 12:11:05,519 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 12:11:05,520 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 12:11:05,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:11:05" (1/1) ... [2021-08-13 12:11:05,547 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:11:05" (1/1) ... [2021-08-13 12:11:05,564 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 12:11:05,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 12:11:05,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 12:11:05,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 12:11:05,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:11:05" (1/1) ... [2021-08-13 12:11:05,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:11:05" (1/1) ... [2021-08-13 12:11:05,573 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:11:05" (1/1) ... [2021-08-13 12:11:05,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:11:05" (1/1) ... [2021-08-13 12:11:05,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:11:05" (1/1) ... [2021-08-13 12:11:05,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:11:05" (1/1) ... [2021-08-13 12:11:05,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:11:05" (1/1) ... [2021-08-13 12:11:05,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 12:11:05,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 12:11:05,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 12:11:05,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 12:11:05,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:11:05" (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 [2021-08-13 12:11:05,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-13 12:11:05,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-13 12:11:05,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-13 12:11:05,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-13 12:11:05,670 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-08-13 12:11:05,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-13 12:11:05,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 12:11:05,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 12:11:05,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-13 12:11:05,670 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-13 12:11:05,670 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-13 12:11:05,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-13 12:11:05,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-13 12:11:05,672 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 12:11:06,138 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 12:11:06,138 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-08-13 12:11:06,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 12:11:06 BoogieIcfgContainer [2021-08-13 12:11:06,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 12:11:06,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 12:11:06,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 12:11:06,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 12:11:06,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.08 12:11:04" (1/3) ... [2021-08-13 12:11:06,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72835416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 12:11:06, skipping insertion in model container [2021-08-13 12:11:06,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:11:05" (2/3) ... [2021-08-13 12:11:06,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72835416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 12:11:06, skipping insertion in model container [2021-08-13 12:11:06,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 12:11:06" (3/3) ... [2021-08-13 12:11:06,144 INFO L111 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2021-08-13 12:11:06,147 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 12:11:06,148 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-08-13 12:11:06,148 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 12:11:06,163 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:11:06,163 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:11:06,163 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:11:06,163 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:11:06,164 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:11:06,164 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:11:06,164 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:11:06,164 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:11:06,164 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:11:06,164 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:11:06,164 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:11:06,164 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:11:06,165 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:11:06,165 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:11:06,165 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:11:06,165 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:11:06,166 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:11:06,166 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:11:06,166 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:11:06,166 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:11:06,167 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:11:06,171 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-08-13 12:11:06,186 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-13 12:11:06,199 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 12:11:06,199 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 12:11:06,199 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 12:11:06,199 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 12:11:06,199 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 12:11:06,200 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 12:11:06,200 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 12:11:06,200 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 12:11:06,210 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 90 transitions, 188 flow [2021-08-13 12:11:06,243 INFO L129 PetriNetUnfolder]: 4/101 cut-off events. [2021-08-13 12:11:06,243 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-08-13 12:11:06,245 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 140 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. [2021-08-13 12:11:06,245 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 90 transitions, 188 flow [2021-08-13 12:11:06,248 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 75 transitions, 156 flow [2021-08-13 12:11:06,253 INFO L129 PetriNetUnfolder]: 1/30 cut-off events. [2021-08-13 12:11:06,253 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 12:11:06,253 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:11:06,254 INFO L266 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] [2021-08-13 12:11:06,254 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 12:11:06,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:11:06,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1156883515, now seen corresponding path program 1 times [2021-08-13 12:11:06,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:11:06,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769025516] [2021-08-13 12:11:06,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:11:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:11:06,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:11:06,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:11:06,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:11:06,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 12:11:06,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:11:06,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-08-13 12:11:06,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:11:06,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-08-13 12:11:06,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:11:06,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:11:06,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:11:06,563 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:11:06,564 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769025516] [2021-08-13 12:11:06,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769025516] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:11:06,564 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:11:06,564 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 12:11:06,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54565114] [2021-08-13 12:11:06,570 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-13 12:11:06,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:11:06,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-13 12:11:06,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-13 12:11:06,580 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 90 [2021-08-13 12:11:06,590 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) [2021-08-13 12:11:06,591 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:11:06,591 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 90 [2021-08-13 12:11:06,592 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:11:06,693 INFO L129 PetriNetUnfolder]: 3/83 cut-off events. [2021-08-13 12:11:06,694 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-08-13 12:11:06,694 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 95 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. [2021-08-13 12:11:06,695 INFO L132 encePairwiseOnDemand]: 78/90 looper letters, 12 selfloop transitions, 11 changer transitions 0/74 dead transitions. [2021-08-13 12:11:06,695 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 74 transitions, 200 flow [2021-08-13 12:11:06,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:11:06,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:11:06,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 451 transitions. [2021-08-13 12:11:06,711 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7158730158730159 [2021-08-13 12:11:06,712 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 451 transitions. [2021-08-13 12:11:06,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 451 transitions. [2021-08-13 12:11:06,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:11:06,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 451 transitions. [2021-08-13 12:11:06,744 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) [2021-08-13 12:11:06,751 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) [2021-08-13 12:11:06,752 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) [2021-08-13 12:11:06,752 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 3 predicate places. [2021-08-13 12:11:06,752 INFO L482 AbstractCegarLoop]: Abstraction has has 81 places, 74 transitions, 200 flow [2021-08-13 12:11:06,753 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) [2021-08-13 12:11:06,753 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:11:06,753 INFO L266 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] [2021-08-13 12:11:06,753 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 12:11:06,753 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 12:11:06,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:11:06,754 INFO L82 PathProgramCache]: Analyzing trace with hash 145435750, now seen corresponding path program 1 times [2021-08-13 12:11:06,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:11:06,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599177194] [2021-08-13 12:11:06,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:11:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:11:06,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:11:06,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:11:06,861 INFO L142 QuantifierPusher]: treesize reduction 11, result has 21.4 percent of original size [2021-08-13 12:11:06,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 12:11:06,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:11:06,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-08-13 12:11:06,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:11:06,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-08-13 12:11:06,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:11:06,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:11:06,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:11:06,874 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:11:06,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599177194] [2021-08-13 12:11:06,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599177194] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:11:06,874 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:11:06,874 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 12:11:06,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279746810] [2021-08-13 12:11:06,875 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-13 12:11:06,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:11:06,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-13 12:11:06,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-13 12:11:06,879 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 90 [2021-08-13 12:11:06,879 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 74 transitions, 200 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) [2021-08-13 12:11:06,880 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:11:06,880 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 90 [2021-08-13 12:11:06,880 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:11:06,970 INFO L129 PetriNetUnfolder]: 3/86 cut-off events. [2021-08-13 12:11:06,970 INFO L130 PetriNetUnfolder]: For 8/10 co-relation queries the response was YES. [2021-08-13 12:11:06,971 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 86 events. 3/86 cut-off events. For 8/10 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 94 event pairs, 0 based on Foata normal form. 1/84 useless extension candidates. Maximal degree in co-relation 57. Up to 12 conditions per place. [2021-08-13 12:11:06,972 INFO L132 encePairwiseOnDemand]: 80/90 looper letters, 14 selfloop transitions, 5 changer transitions 6/73 dead transitions. [2021-08-13 12:11:06,972 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 73 transitions, 244 flow [2021-08-13 12:11:06,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 12:11:06,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 12:11:06,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 449 transitions. [2021-08-13 12:11:06,974 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7126984126984127 [2021-08-13 12:11:06,974 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 449 transitions. [2021-08-13 12:11:06,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 449 transitions. [2021-08-13 12:11:06,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:11:06,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 449 transitions. [2021-08-13 12:11:06,976 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) [2021-08-13 12:11:06,978 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) [2021-08-13 12:11:06,978 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) [2021-08-13 12:11:06,979 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 7 predicate places. [2021-08-13 12:11:06,979 INFO L482 AbstractCegarLoop]: Abstraction has has 85 places, 73 transitions, 244 flow [2021-08-13 12:11:06,979 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) [2021-08-13 12:11:06,979 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:11:06,979 INFO L266 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] [2021-08-13 12:11:06,980 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 12:11:06,980 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 12:11:06,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:11:06,983 INFO L82 PathProgramCache]: Analyzing trace with hash -106359310, now seen corresponding path program 1 times [2021-08-13 12:11:06,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:11:06,983 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432189724] [2021-08-13 12:11:06,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:11:07,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:11:07,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:11:07,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:11:07,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:11:07,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 12:11:07,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:11:07,069 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:11:07,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432189724] [2021-08-13 12:11:07,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432189724] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:11:07,070 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:11:07,070 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-13 12:11:07,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11385789] [2021-08-13 12:11:07,071 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 12:11:07,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:11:07,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 12:11:07,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 12:11:07,073 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2021-08-13 12:11:07,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 73 transitions, 244 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) [2021-08-13 12:11:07,073 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:11:07,074 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2021-08-13 12:11:07,074 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:11:07,117 INFO L129 PetriNetUnfolder]: 2/93 cut-off events. [2021-08-13 12:11:07,117 INFO L130 PetriNetUnfolder]: For 28/34 co-relation queries the response was YES. [2021-08-13 12:11:07,118 INFO L84 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 93 events. 2/93 cut-off events. For 28/34 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 122 event pairs, 0 based on Foata normal form. 2/93 useless extension candidates. Maximal degree in co-relation 66. Up to 13 conditions per place. [2021-08-13 12:11:07,118 INFO L132 encePairwiseOnDemand]: 85/90 looper letters, 8 selfloop transitions, 6 changer transitions 6/74 dead transitions. [2021-08-13 12:11:07,118 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 74 transitions, 282 flow [2021-08-13 12:11:07,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 12:11:07,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 12:11:07,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 234 transitions. [2021-08-13 12:11:07,120 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2021-08-13 12:11:07,120 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 234 transitions. [2021-08-13 12:11:07,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 234 transitions. [2021-08-13 12:11:07,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:11:07,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 234 transitions. [2021-08-13 12:11:07,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 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) [2021-08-13 12:11:07,121 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) [2021-08-13 12:11:07,122 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) [2021-08-13 12:11:07,122 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2021-08-13 12:11:07,123 INFO L482 AbstractCegarLoop]: Abstraction has has 87 places, 74 transitions, 282 flow [2021-08-13 12:11:07,123 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) [2021-08-13 12:11:07,123 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:11:07,123 INFO L266 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] [2021-08-13 12:11:07,123 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 12:11:07,124 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 12:11:07,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:11:07,125 INFO L82 PathProgramCache]: Analyzing trace with hash 926630384, now seen corresponding path program 1 times [2021-08-13 12:11:07,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:11:07,126 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292313903] [2021-08-13 12:11:07,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:11:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-13 12:11:07,151 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-13 12:11:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-13 12:11:07,176 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-13 12:11:07,200 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-13 12:11:07,201 INFO L651 BasicCegarLoop]: Counterexample might be feasible [2021-08-13 12:11:07,201 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 12:11:07,203 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-13 12:11:07,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.08 12:11:07 BasicIcfg [2021-08-13 12:11:07,244 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-13 12:11:07,245 INFO L168 Benchmark]: Toolchain (without parser) took 2611.53 ms. Allocated memory was 188.7 MB in the beginning and 255.9 MB in the end (delta: 67.1 MB). Free memory was 150.2 MB in the beginning and 163.3 MB in the end (delta: -13.1 MB). Peak memory consumption was 55.0 MB. Max. memory is 8.0 GB. [2021-08-13 12:11:07,245 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 188.7 MB. Free memory was 170.1 MB in the beginning and 170.0 MB in the end (delta: 87.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-13 12:11:07,246 INFO L168 Benchmark]: CACSL2BoogieTranslator took 876.35 ms. Allocated memory was 188.7 MB in the beginning and 255.9 MB in the end (delta: 67.1 MB). Free memory was 150.0 MB in the beginning and 208.7 MB in the end (delta: -58.7 MB). Peak memory consumption was 87.4 MB. Max. memory is 8.0 GB. [2021-08-13 12:11:07,246 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.87 ms. Allocated memory is still 255.9 MB. Free memory was 208.7 MB in the beginning and 205.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-08-13 12:11:07,247 INFO L168 Benchmark]: Boogie Preprocessor took 29.47 ms. Allocated memory is still 255.9 MB. Free memory was 205.6 MB in the beginning and 203.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-13 12:11:07,247 INFO L168 Benchmark]: RCFGBuilder took 544.78 ms. Allocated memory is still 255.9 MB. Free memory was 203.0 MB in the beginning and 162.1 MB in the end (delta: 40.9 MB). Peak memory consumption was 40.9 MB. Max. memory is 8.0 GB. [2021-08-13 12:11:07,247 INFO L168 Benchmark]: TraceAbstraction took 1104.16 ms. Allocated memory is still 255.9 MB. Free memory was 161.5 MB in the beginning and 163.3 MB in the end (delta: -1.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-13 12:11:07,249 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 188.7 MB. Free memory was 170.1 MB in the beginning and 170.0 MB in the end (delta: 87.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 876.35 ms. Allocated memory was 188.7 MB in the beginning and 255.9 MB in the end (delta: 67.1 MB). Free memory was 150.0 MB in the beginning and 208.7 MB in the end (delta: -58.7 MB). Peak memory consumption was 87.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 44.87 ms. Allocated memory is still 255.9 MB. Free memory was 208.7 MB in the beginning and 205.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.47 ms. Allocated memory is still 255.9 MB. Free memory was 205.6 MB in the beginning and 203.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 544.78 ms. Allocated memory is still 255.9 MB. Free memory was 203.0 MB in the beginning and 162.1 MB in the end (delta: 40.9 MB). Peak memory consumption was 40.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1104.16 ms. Allocated memory is still 255.9 MB. Free memory was 161.5 MB in the beginning and 163.3 MB in the end (delta: -1.8 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 with 1 thread instances CFG has 3 procedures, 95 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 1005.0ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 330.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 48.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 47 SDtfs, 34 SDslu, 35 SDs, 0 SdLazy, 62 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 45.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 71.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=282occurred in iteration=3, 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: 11.8ms SsaConstructionTime, 91.2ms SatisfiabilityAnalysisTime, 257.8ms 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...