/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread/lazy01.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 03:06:52,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 03:06:52,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 03:06:52,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 03:06:52,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 03:06:52,543 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 03:06:52,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 03:06:52,547 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 03:06:52,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 03:06:52,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 03:06:52,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 03:06:52,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 03:06:52,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 03:06:52,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 03:06:52,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 03:06:52,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 03:06:52,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 03:06:52,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 03:06:52,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 03:06:52,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 03:06:52,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 03:06:52,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 03:06:52,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 03:06:52,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 03:06:52,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 03:06:52,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 03:06:52,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 03:06:52,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 03:06:52,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 03:06:52,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 03:06:52,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 03:06:52,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 03:06:52,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 03:06:52,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 03:06:52,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 03:06:52,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 03:06:52,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 03:06:52,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 03:06:52,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 03:06:52,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 03:06:52,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 03:06:52,585 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-SemanticLooper.epf [2020-10-16 03:06:52,611 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 03:06:52,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 03:06:52,613 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 03:06:52,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 03:06:52,614 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 03:06:52,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 03:06:52,614 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 03:06:52,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 03:06:52,615 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 03:06:52,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 03:06:52,615 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 03:06:52,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 03:06:52,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 03:06:52,616 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 03:06:52,616 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 03:06:52,616 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 03:06:52,616 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 03:06:52,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 03:06:52,617 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 03:06:52,617 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 03:06:52,617 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 03:06:52,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 03:06:52,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 03:06:52,618 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 03:06:52,618 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 03:06:52,618 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 03:06:52,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 03:06:52,619 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 03:06:52,619 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 03:06:52,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 03:06:52,966 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 03:06:52,972 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 03:06:52,974 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 03:06:52,974 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 03:06:52,975 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/lazy01.i [2020-10-16 03:06:53,072 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb9645e7e/9817c24b41804c4ea1e1732e9bfc96cf/FLAGe2de67a24 [2020-10-16 03:06:53,712 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 03:06:53,713 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i [2020-10-16 03:06:53,730 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb9645e7e/9817c24b41804c4ea1e1732e9bfc96cf/FLAGe2de67a24 [2020-10-16 03:06:53,930 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb9645e7e/9817c24b41804c4ea1e1732e9bfc96cf [2020-10-16 03:06:53,941 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 03:06:53,943 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 03:06:53,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 03:06:53,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 03:06:53,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 03:06:53,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:06:53" (1/1) ... [2020-10-16 03:06:53,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7246eda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:06:53, skipping insertion in model container [2020-10-16 03:06:53,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:06:53" (1/1) ... [2020-10-16 03:06:53,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 03:06:54,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 03:06:54,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 03:06:54,623 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 03:06:54,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 03:06:54,788 INFO L208 MainTranslator]: Completed translation [2020-10-16 03:06:54,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:06:54 WrapperNode [2020-10-16 03:06:54,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 03:06:54,790 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 03:06:54,790 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 03:06:54,790 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 03:06:54,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:06:54" (1/1) ... [2020-10-16 03:06:54,817 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:06:54" (1/1) ... [2020-10-16 03:06:54,838 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 03:06:54,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 03:06:54,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 03:06:54,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 03:06:54,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:06:54" (1/1) ... [2020-10-16 03:06:54,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:06:54" (1/1) ... [2020-10-16 03:06:54,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:06:54" (1/1) ... [2020-10-16 03:06:54,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:06:54" (1/1) ... [2020-10-16 03:06:54,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:06:54" (1/1) ... [2020-10-16 03:06:54,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:06:54" (1/1) ... [2020-10-16 03:06:54,863 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:06:54" (1/1) ... [2020-10-16 03:06:54,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 03:06:54,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 03:06:54,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 03:06:54,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 03:06:54,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:06:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 03:06:54,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 03:06:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-10-16 03:06:54,939 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-10-16 03:06:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-10-16 03:06:54,939 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-10-16 03:06:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2020-10-16 03:06:54,940 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2020-10-16 03:06:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 03:06:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-16 03:06:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 03:06:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 03:06:54,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-16 03:06:54,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 03:06:54,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 03:06:54,943 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 03:06:55,290 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 03:06:55,290 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-16 03:06:55,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:06:55 BoogieIcfgContainer [2020-10-16 03:06:55,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 03:06:55,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 03:06:55,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 03:06:55,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 03:06:55,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:06:53" (1/3) ... [2020-10-16 03:06:55,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac62a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:06:55, skipping insertion in model container [2020-10-16 03:06:55,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:06:54" (2/3) ... [2020-10-16 03:06:55,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac62a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:06:55, skipping insertion in model container [2020-10-16 03:06:55,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:06:55" (3/3) ... [2020-10-16 03:06:55,301 INFO L111 eAbstractionObserver]: Analyzing ICFG lazy01.i [2020-10-16 03:06:55,313 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 03:06:55,320 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 03:06:55,321 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 03:06:55,352 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,353 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,353 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,353 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,354 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,354 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,354 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,354 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,355 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,355 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,355 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,356 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,356 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,356 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,356 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,357 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,357 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,357 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,358 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,358 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,359 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,359 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,359 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,359 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,360 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,360 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,360 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,364 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,364 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,365 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,365 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,365 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,365 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,372 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,372 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,372 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,373 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,373 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,376 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,376 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,376 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,376 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,377 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:06:55,410 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 03:06:55,430 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 03:06:55,430 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 03:06:55,431 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 03:06:55,431 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 03:06:55,431 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 03:06:55,431 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 03:06:55,431 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 03:06:55,431 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 03:06:55,449 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 81 places, 78 transitions, 198 flow [2020-10-16 03:06:55,518 INFO L129 PetriNetUnfolder]: 6/86 cut-off events. [2020-10-16 03:06:55,518 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-10-16 03:06:55,524 INFO L80 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 86 events. 6/86 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 129 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 52. Up to 6 conditions per place. [2020-10-16 03:06:55,524 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 78 transitions, 198 flow [2020-10-16 03:06:55,531 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 60 transitions, 141 flow [2020-10-16 03:06:55,533 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 03:06:55,535 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 60 transitions, 141 flow [2020-10-16 03:06:55,538 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 60 transitions, 141 flow [2020-10-16 03:06:55,538 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 67 places, 60 transitions, 141 flow [2020-10-16 03:06:55,565 INFO L129 PetriNetUnfolder]: 2/62 cut-off events. [2020-10-16 03:06:55,565 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 03:06:55,566 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 62 events. 2/62 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 85 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 42. Up to 3 conditions per place. [2020-10-16 03:06:55,569 INFO L117 LiptonReduction]: Number of co-enabled transitions 956 [2020-10-16 03:06:57,075 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 86 [2020-10-16 03:06:57,184 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-16 03:06:57,193 INFO L132 LiptonReduction]: Checked pairs total: 3094 [2020-10-16 03:06:57,194 INFO L134 LiptonReduction]: Total number of compositions: 38 [2020-10-16 03:06:57,197 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1666 [2020-10-16 03:06:57,205 INFO L129 PetriNetUnfolder]: 1/18 cut-off events. [2020-10-16 03:06:57,205 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 03:06:57,205 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:06:57,206 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:06:57,207 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:06:57,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:06:57,213 INFO L82 PathProgramCache]: Analyzing trace with hash -278949062, now seen corresponding path program 1 times [2020-10-16 03:06:57,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:06:57,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103008968] [2020-10-16 03:06:57,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:06:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:06:57,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:06:57,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103008968] [2020-10-16 03:06:57,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:06:57,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 03:06:57,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519522351] [2020-10-16 03:06:57,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 03:06:57,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:06:57,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 03:06:57,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 03:06:57,469 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 116 [2020-10-16 03:06:57,472 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 75 flow. Second operand 3 states. [2020-10-16 03:06:57,472 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:06:57,472 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 116 [2020-10-16 03:06:57,474 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:06:57,516 INFO L129 PetriNetUnfolder]: 15/77 cut-off events. [2020-10-16 03:06:57,516 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-10-16 03:06:57,517 INFO L80 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 77 events. 15/77 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 272 event pairs, 3 based on Foata normal form. 4/72 useless extension candidates. Maximal degree in co-relation 110. Up to 24 conditions per place. [2020-10-16 03:06:57,519 INFO L132 encePairwiseOnDemand]: 111/116 looper letters, 6 selfloop transitions, 3 changer transitions 2/30 dead transitions. [2020-10-16 03:06:57,519 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 101 flow [2020-10-16 03:06:57,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 03:06:57,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 03:06:57,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2020-10-16 03:06:57,537 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8563218390804598 [2020-10-16 03:06:57,538 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2020-10-16 03:06:57,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2020-10-16 03:06:57,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:06:57,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2020-10-16 03:06:57,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 03:06:57,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 03:06:57,555 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 03:06:57,557 INFO L185 Difference]: Start difference. First operand has 34 places, 27 transitions, 75 flow. Second operand 3 states and 298 transitions. [2020-10-16 03:06:57,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 101 flow [2020-10-16 03:06:57,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 88 flow, removed 0 selfloop flow, removed 5 redundant places. [2020-10-16 03:06:57,565 INFO L241 Difference]: Finished difference. Result has 32 places, 27 transitions, 77 flow [2020-10-16 03:06:57,568 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2020-10-16 03:06:57,569 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2020-10-16 03:06:57,569 INFO L481 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 77 flow [2020-10-16 03:06:57,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 03:06:57,569 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:06:57,570 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:06:57,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 03:06:57,570 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:06:57,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:06:57,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1782078466, now seen corresponding path program 1 times [2020-10-16 03:06:57,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:06:57,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209230117] [2020-10-16 03:06:57,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:06:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:06:57,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:06:57,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209230117] [2020-10-16 03:06:57,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:06:57,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 03:06:57,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351268838] [2020-10-16 03:06:57,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 03:06:57,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:06:57,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 03:06:57,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 03:06:57,712 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 116 [2020-10-16 03:06:57,712 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 77 flow. Second operand 3 states. [2020-10-16 03:06:57,712 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:06:57,712 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 116 [2020-10-16 03:06:57,712 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:06:57,750 INFO L129 PetriNetUnfolder]: 2/45 cut-off events. [2020-10-16 03:06:57,750 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 03:06:57,751 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 45 events. 2/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 126 event pairs, 0 based on Foata normal form. 9/54 useless extension candidates. Maximal degree in co-relation 60. Up to 8 conditions per place. [2020-10-16 03:06:57,751 INFO L132 encePairwiseOnDemand]: 111/116 looper letters, 1 selfloop transitions, 5 changer transitions 0/27 dead transitions. [2020-10-16 03:06:57,752 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 89 flow [2020-10-16 03:06:57,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 03:06:57,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 03:06:57,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 243 transitions. [2020-10-16 03:06:57,755 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6982758620689655 [2020-10-16 03:06:57,755 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 243 transitions. [2020-10-16 03:06:57,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 243 transitions. [2020-10-16 03:06:57,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:06:57,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 243 transitions. [2020-10-16 03:06:57,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 03:06:57,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 03:06:57,758 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 03:06:57,758 INFO L185 Difference]: Start difference. First operand has 32 places, 27 transitions, 77 flow. Second operand 3 states and 243 transitions. [2020-10-16 03:06:57,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 89 flow [2020-10-16 03:06:57,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 86 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 03:06:57,760 INFO L241 Difference]: Finished difference. Result has 32 places, 27 transitions, 84 flow [2020-10-16 03:06:57,760 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2020-10-16 03:06:57,761 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2020-10-16 03:06:57,761 INFO L481 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 84 flow [2020-10-16 03:06:57,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 03:06:57,761 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:06:57,762 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:06:57,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 03:06:57,762 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:06:57,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:06:57,763 INFO L82 PathProgramCache]: Analyzing trace with hash -963981606, now seen corresponding path program 1 times [2020-10-16 03:06:57,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:06:57,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86944599] [2020-10-16 03:06:57,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:06:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:06:57,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:06:57,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86944599] [2020-10-16 03:06:57,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:06:57,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 03:06:57,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024735464] [2020-10-16 03:06:57,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 03:06:57,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:06:57,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 03:06:57,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 03:06:57,817 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 116 [2020-10-16 03:06:57,818 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 84 flow. Second operand 4 states. [2020-10-16 03:06:57,818 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:06:57,818 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 116 [2020-10-16 03:06:57,818 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:06:57,853 INFO L129 PetriNetUnfolder]: 2/44 cut-off events. [2020-10-16 03:06:57,853 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2020-10-16 03:06:57,854 INFO L80 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 44 events. 2/44 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 116 event pairs, 0 based on Foata normal form. 1/44 useless extension candidates. Maximal degree in co-relation 68. Up to 8 conditions per place. [2020-10-16 03:06:57,854 INFO L132 encePairwiseOnDemand]: 111/116 looper letters, 4 selfloop transitions, 5 changer transitions 2/30 dead transitions. [2020-10-16 03:06:57,854 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 30 transitions, 112 flow [2020-10-16 03:06:57,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 03:06:57,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 03:06:57,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 392 transitions. [2020-10-16 03:06:57,857 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8448275862068966 [2020-10-16 03:06:57,858 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 392 transitions. [2020-10-16 03:06:57,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 392 transitions. [2020-10-16 03:06:57,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:06:57,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 392 transitions. [2020-10-16 03:06:57,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 03:06:57,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 03:06:57,861 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 03:06:57,862 INFO L185 Difference]: Start difference. First operand has 32 places, 27 transitions, 84 flow. Second operand 4 states and 392 transitions. [2020-10-16 03:06:57,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 30 transitions, 112 flow [2020-10-16 03:06:57,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 107 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 03:06:57,864 INFO L241 Difference]: Finished difference. Result has 35 places, 27 transitions, 94 flow [2020-10-16 03:06:57,864 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2020-10-16 03:06:57,864 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2020-10-16 03:06:57,864 INFO L481 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 94 flow [2020-10-16 03:06:57,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 03:06:57,865 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:06:57,865 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:06:57,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 03:06:57,865 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:06:57,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:06:57,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1951465704, now seen corresponding path program 1 times [2020-10-16 03:06:57,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:06:57,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211544444] [2020-10-16 03:06:57,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:06:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:06:57,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:06:57,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211544444] [2020-10-16 03:06:57,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:06:57,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 03:06:57,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067619625] [2020-10-16 03:06:57,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 03:06:57,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:06:57,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 03:06:57,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 03:06:57,926 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 116 [2020-10-16 03:06:57,926 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 94 flow. Second operand 5 states. [2020-10-16 03:06:57,927 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:06:57,927 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 116 [2020-10-16 03:06:57,927 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:06:57,965 INFO L129 PetriNetUnfolder]: 2/41 cut-off events. [2020-10-16 03:06:57,966 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2020-10-16 03:06:57,966 INFO L80 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 41 events. 2/41 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 102 event pairs, 0 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 60. Up to 7 conditions per place. [2020-10-16 03:06:57,967 INFO L132 encePairwiseOnDemand]: 111/116 looper letters, 5 selfloop transitions, 5 changer transitions 1/29 dead transitions. [2020-10-16 03:06:57,967 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 29 transitions, 123 flow [2020-10-16 03:06:57,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 03:06:57,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 03:06:57,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 477 transitions. [2020-10-16 03:06:57,970 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8224137931034483 [2020-10-16 03:06:57,970 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 477 transitions. [2020-10-16 03:06:57,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 477 transitions. [2020-10-16 03:06:57,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:06:57,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 477 transitions. [2020-10-16 03:06:57,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 03:06:57,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 03:06:57,973 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 03:06:57,973 INFO L185 Difference]: Start difference. First operand has 35 places, 27 transitions, 94 flow. Second operand 5 states and 477 transitions. [2020-10-16 03:06:57,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 29 transitions, 123 flow [2020-10-16 03:06:57,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 29 transitions, 118 flow, removed 1 selfloop flow, removed 1 redundant places. [2020-10-16 03:06:57,976 INFO L241 Difference]: Finished difference. Result has 40 places, 28 transitions, 110 flow [2020-10-16 03:06:57,976 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=110, PETRI_PLACES=40, PETRI_TRANSITIONS=28} [2020-10-16 03:06:57,977 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2020-10-16 03:06:57,977 INFO L481 AbstractCegarLoop]: Abstraction has has 40 places, 28 transitions, 110 flow [2020-10-16 03:06:57,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 03:06:57,977 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:06:57,977 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:06:57,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 03:06:57,978 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:06:57,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:06:57,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1409817908, now seen corresponding path program 1 times [2020-10-16 03:06:57,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:06:57,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939150656] [2020-10-16 03:06:57,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:06:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 03:06:58,003 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 03:06:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 03:06:58,020 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 03:06:58,049 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 03:06:58,049 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 03:06:58,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 03:06:58,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:06:58 BasicIcfg [2020-10-16 03:06:58,099 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 03:06:58,103 INFO L168 Benchmark]: Toolchain (without parser) took 4158.59 ms. Allocated memory was 250.1 MB in the beginning and 369.6 MB in the end (delta: 119.5 MB). Free memory was 204.4 MB in the beginning and 289.8 MB in the end (delta: -85.4 MB). Peak memory consumption was 34.1 MB. Max. memory is 14.2 GB. [2020-10-16 03:06:58,105 INFO L168 Benchmark]: CDTParser took 0.70 ms. Allocated memory is still 250.1 MB. Free memory is still 226.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 03:06:58,106 INFO L168 Benchmark]: CACSL2BoogieTranslator took 844.21 ms. Allocated memory was 250.1 MB in the beginning and 309.3 MB in the end (delta: 59.2 MB). Free memory was 204.4 MB in the beginning and 264.8 MB in the end (delta: -60.4 MB). Peak memory consumption was 30.3 MB. Max. memory is 14.2 GB. [2020-10-16 03:06:58,107 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.86 ms. Allocated memory is still 309.3 MB. Free memory was 264.8 MB in the beginning and 262.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 03:06:58,108 INFO L168 Benchmark]: Boogie Preprocessor took 27.54 ms. Allocated memory is still 309.3 MB. Free memory is still 262.2 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 03:06:58,109 INFO L168 Benchmark]: RCFGBuilder took 426.18 ms. Allocated memory is still 309.3 MB. Free memory was 259.7 MB in the beginning and 237.9 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 03:06:58,110 INFO L168 Benchmark]: TraceAbstraction took 2805.63 ms. Allocated memory was 309.3 MB in the beginning and 369.6 MB in the end (delta: 60.3 MB). Free memory was 237.9 MB in the beginning and 289.8 MB in the end (delta: -51.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 14.2 GB. [2020-10-16 03:06:58,113 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.70 ms. Allocated memory is still 250.1 MB. Free memory is still 226.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 844.21 ms. Allocated memory was 250.1 MB in the beginning and 309.3 MB in the end (delta: 59.2 MB). Free memory was 204.4 MB in the beginning and 264.8 MB in the end (delta: -60.4 MB). Peak memory consumption was 30.3 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 48.86 ms. Allocated memory is still 309.3 MB. Free memory was 264.8 MB in the beginning and 262.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.54 ms. Allocated memory is still 309.3 MB. Free memory is still 262.2 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 426.18 ms. Allocated memory is still 309.3 MB. Free memory was 259.7 MB in the beginning and 237.9 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2805.63 ms. Allocated memory was 309.3 MB in the beginning and 369.6 MB in the end (delta: 60.3 MB). Free memory was 237.9 MB in the beginning and 289.8 MB in the end (delta: -51.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 654 VarBasedMoverChecksPositive, 47 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 171 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 67 PlacesBefore, 34 PlacesAfterwards, 60 TransitionsBefore, 27 TransitionsAfterwards, 956 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 38 TotalNumberOfCompositions, 3094 MoverChecksTotal - CounterExampleResult [Line: 703]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L683] 0 pthread_mutex_t mutex; [L684] 0 int data = 0; [L712] 0 pthread_t t1, t2, t3; [L713] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={7:0}] [L714] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, data=0, mutex={7:0}] [L688] 1 data++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={7:0}] [L690] 1 return 0; [L695] 2 data+=2 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={7:0}] [L697] 2 return 0; [L715] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={7:0}] [L702] COND TRUE 3 data >= 3 [L703] 3 __VERIFIER_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={7:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 2.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 14 SDtfs, 11 SDslu, 2 SDs, 0 SdLazy, 41 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 945 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...