/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-1_3-join.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 15:20:21,544 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 15:20:21,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 15:20:21,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 15:20:21,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 15:20:21,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 15:20:21,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 15:20:21,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 15:20:21,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 15:20:21,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 15:20:21,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 15:20:21,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 15:20:21,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 15:20:21,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 15:20:21,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 15:20:21,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 15:20:21,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 15:20:21,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 15:20:21,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 15:20:21,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 15:20:21,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 15:20:21,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 15:20:21,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 15:20:21,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 15:20:21,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 15:20:21,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 15:20:21,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 15:20:21,593 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 15:20:21,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 15:20:21,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 15:20:21,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 15:20:21,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 15:20:21,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 15:20:21,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 15:20:21,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 15:20:21,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 15:20:21,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 15:20:21,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 15:20:21,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 15:20:21,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 15:20:21,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 15:20:21,605 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-RepeatedSemanticLbe.epf [2021-03-25 15:20:21,639 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 15:20:21,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 15:20:21,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 15:20:21,641 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 15:20:21,641 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 15:20:21,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 15:20:21,641 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 15:20:21,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 15:20:21,641 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 15:20:21,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 15:20:21,642 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 15:20:21,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 15:20:21,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 15:20:21,642 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 15:20:21,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 15:20:21,642 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 15:20:21,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 15:20:21,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 15:20:21,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 15:20:21,643 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 15:20:21,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 15:20:21,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 15:20:21,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 15:20:21,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 15:20:21,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 15:20:21,646 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 15:20:21,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 15:20:21,646 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 15:20:21,646 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 15:20:21,646 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 15:20:21,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 15:20:21,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 15:20:21,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 15:20:21,960 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 15:20:21,962 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 15:20:21,962 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_3-join.i [2021-03-25 15:20:22,019 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e60dc8500/d69c8089825a41268964ac0412cdc8c3/FLAGb797c291c [2021-03-25 15:20:22,602 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 15:20:22,602 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_3-join.i [2021-03-25 15:20:22,622 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e60dc8500/d69c8089825a41268964ac0412cdc8c3/FLAGb797c291c [2021-03-25 15:20:23,004 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e60dc8500/d69c8089825a41268964ac0412cdc8c3 [2021-03-25 15:20:23,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 15:20:23,009 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 15:20:23,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 15:20:23,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 15:20:23,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 15:20:23,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 03:20:23" (1/1) ... [2021-03-25 15:20:23,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1405850f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:20:23, skipping insertion in model container [2021-03-25 15:20:23,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 03:20:23" (1/1) ... [2021-03-25 15:20:23,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 15:20:23,075 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 15:20:23,646 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_3-join.i[76153,76166] [2021-03-25 15:20:23,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 15:20:23,668 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 15:20:23,708 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_3-join.i[76153,76166] [2021-03-25 15:20:23,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 15:20:23,970 INFO L208 MainTranslator]: Completed translation [2021-03-25 15:20:23,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:20:23 WrapperNode [2021-03-25 15:20:23,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 15:20:23,973 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 15:20:23,973 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 15:20:23,974 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 15:20:23,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:20:23" (1/1) ... [2021-03-25 15:20:24,017 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:20:23" (1/1) ... [2021-03-25 15:20:24,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 15:20:24,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 15:20:24,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 15:20:24,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 15:20:24,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:20:23" (1/1) ... [2021-03-25 15:20:24,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:20:23" (1/1) ... [2021-03-25 15:20:24,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:20:23" (1/1) ... [2021-03-25 15:20:24,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:20:23" (1/1) ... [2021-03-25 15:20:24,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:20:23" (1/1) ... [2021-03-25 15:20:24,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:20:23" (1/1) ... [2021-03-25 15:20:24,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:20:23" (1/1) ... [2021-03-25 15:20:24,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 15:20:24,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 15:20:24,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 15:20:24,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 15:20:24,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:20:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 15:20:24,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 15:20:24,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 15:20:24,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 15:20:24,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-25 15:20:24,134 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-03-25 15:20:24,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-03-25 15:20:24,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 15:20:24,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 15:20:24,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 15:20:24,136 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 15:20:24,136 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 15:20:24,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 15:20:24,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 15:20:24,137 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 15:20:24,638 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 15:20:24,640 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-03-25 15:20:24,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 03:20:24 BoogieIcfgContainer [2021-03-25 15:20:24,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 15:20:24,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 15:20:24,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 15:20:24,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 15:20:24,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 03:20:23" (1/3) ... [2021-03-25 15:20:24,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@328ab8bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 03:20:24, skipping insertion in model container [2021-03-25 15:20:24,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:20:23" (2/3) ... [2021-03-25 15:20:24,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@328ab8bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 03:20:24, skipping insertion in model container [2021-03-25 15:20:24,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 03:20:24" (3/3) ... [2021-03-25 15:20:24,647 INFO L111 eAbstractionObserver]: Analyzing ICFG race-1_3-join.i [2021-03-25 15:20:24,652 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 15:20:24,661 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-03-25 15:20:24,662 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 15:20:24,683 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:20:24,683 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:20:24,683 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:20:24,683 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:20:24,684 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:20:24,684 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:20:24,684 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:20:24,684 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:20:24,684 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:20:24,684 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:20:24,684 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:20:24,685 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:20:24,685 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:20:24,685 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:20:24,685 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:20:24,685 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:20:24,687 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:20:24,687 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:20:24,687 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:20:24,687 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:20:24,687 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:20:24,691 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-03-25 15:20:24,703 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-25 15:20:24,719 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 15:20:24,719 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 15:20:24,719 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 15:20:24,719 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 15:20:24,720 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 15:20:24,720 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 15:20:24,720 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 15:20:24,720 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 15:20:24,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 87 transitions, 182 flow [2021-03-25 15:20:24,760 INFO L129 PetriNetUnfolder]: 4/101 cut-off events. [2021-03-25 15:20:24,760 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:20:24,762 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 6. Compared 150 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 61. Up to 3 conditions per place. [2021-03-25 15:20:24,762 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 87 transitions, 182 flow [2021-03-25 15:20:24,766 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 76 transitions, 158 flow [2021-03-25 15:20:24,767 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:20:24,777 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 76 transitions, 158 flow [2021-03-25 15:20:24,780 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 76 transitions, 158 flow [2021-03-25 15:20:24,781 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 77 places, 76 transitions, 158 flow [2021-03-25 15:20:24,795 INFO L129 PetriNetUnfolder]: 2/86 cut-off events. [2021-03-25 15:20:24,795 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:20:24,795 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 86 events. 2/86 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 94 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-25 15:20:24,797 INFO L142 LiptonReduction]: Number of co-enabled transitions 168 [2021-03-25 15:20:26,842 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2021-03-25 15:20:27,071 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2021-03-25 15:20:27,480 INFO L154 LiptonReduction]: Checked pairs total: 159 [2021-03-25 15:20:27,480 INFO L156 LiptonReduction]: Total number of compositions: 61 [2021-03-25 15:20:27,482 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2716 [2021-03-25 15:20:27,488 INFO L129 PetriNetUnfolder]: 1/6 cut-off events. [2021-03-25 15:20:27,488 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 15:20:27,488 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:20:27,489 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-03-25 15:20:27,489 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 15:20:27,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:20:27,493 INFO L82 PathProgramCache]: Analyzing trace with hash 9874551, now seen corresponding path program 1 times [2021-03-25 15:20:27,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:20:27,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889128613] [2021-03-25 15:20:27,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:20:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:20:27,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:20:27,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:20:27,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:20:27,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 15:20:27,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:20:27,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889128613] [2021-03-25 15:20:27,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 15:20:27,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 15:20:27,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644670850] [2021-03-25 15:20:27,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 15:20:27,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:20:27,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 15:20:27,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 15:20:27,825 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 148 [2021-03-25 15:20:27,827 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:20:27,827 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:20:27,827 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 148 [2021-03-25 15:20:27,828 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:20:27,847 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-25 15:20:27,847 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:20:27,847 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 20 events. 0/20 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 19 event pairs, 0 based on Foata normal form. 3/20 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-25 15:20:27,848 INFO L132 encePairwiseOnDemand]: 138/148 looper letters, 1 selfloop transitions, 3 changer transitions 6/20 dead transitions. [2021-03-25 15:20:27,848 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 20 transitions, 62 flow [2021-03-25 15:20:27,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 15:20:27,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 15:20:27,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 352 transitions. [2021-03-25 15:20:27,867 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7927927927927928 [2021-03-25 15:20:27,867 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 352 transitions. [2021-03-25 15:20:27,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 352 transitions. [2021-03-25 15:20:27,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:20:27,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 352 transitions. [2021-03-25 15:20:27,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:20:27,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:20:27,886 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:20:27,887 INFO L185 Difference]: Start difference. First operand has 27 places, 26 transitions, 58 flow. Second operand 3 states and 352 transitions. [2021-03-25 15:20:27,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 20 transitions, 62 flow [2021-03-25 15:20:27,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 20 transitions, 58 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 15:20:27,899 INFO L241 Difference]: Finished difference. Result has 24 places, 14 transitions, 35 flow [2021-03-25 15:20:27,901 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=35, PETRI_PLACES=24, PETRI_TRANSITIONS=14} [2021-03-25 15:20:27,903 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, -3 predicate places. [2021-03-25 15:20:27,905 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:20:27,906 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 14 transitions, 35 flow [2021-03-25 15:20:27,906 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 14 transitions, 35 flow [2021-03-25 15:20:27,907 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 18 places, 14 transitions, 35 flow [2021-03-25 15:20:27,911 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-03-25 15:20:27,911 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 15:20:27,911 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 14 events. 0/14 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 15:20:27,911 INFO L142 LiptonReduction]: Number of co-enabled transitions 12 [2021-03-25 15:20:28,189 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-03-25 15:20:28,294 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-03-25 15:20:28,468 INFO L154 LiptonReduction]: Checked pairs total: 16 [2021-03-25 15:20:28,469 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-25 15:20:28,469 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 564 [2021-03-25 15:20:28,470 INFO L480 AbstractCegarLoop]: Abstraction has has 12 places, 8 transitions, 23 flow [2021-03-25 15:20:28,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:20:28,470 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:20:28,470 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:20:28,470 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 15:20:28,470 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 15:20:28,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:20:28,471 INFO L82 PathProgramCache]: Analyzing trace with hash 2113502238, now seen corresponding path program 1 times [2021-03-25 15:20:28,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:20:28,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683608893] [2021-03-25 15:20:28,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:20:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:20:28,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:20:28,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:20:28,552 INFO L142 QuantifierPusher]: treesize reduction 11, result has 21.4 percent of original size [2021-03-25 15:20:28,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:20:28,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:20:28,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683608893] [2021-03-25 15:20:28,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 15:20:28,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 15:20:28,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303626973] [2021-03-25 15:20:28,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 15:20:28,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:20:28,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 15:20:28,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 15:20:28,559 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 154 [2021-03-25 15:20:28,560 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 12 places, 8 transitions, 23 flow. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:20:28,560 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:20:28,560 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 154 [2021-03-25 15:20:28,560 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:20:28,576 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 15:20:28,576 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:20:28,576 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 7 event pairs, 2 based on Foata normal form. 1/12 useless extension candidates. Maximal degree in co-relation 11. Up to 10 conditions per place. [2021-03-25 15:20:28,576 INFO L132 encePairwiseOnDemand]: 153/154 looper letters, 5 selfloop transitions, 0 changer transitions 0/7 dead transitions. [2021-03-25 15:20:28,577 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 7 transitions, 29 flow [2021-03-25 15:20:28,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-25 15:20:28,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-03-25 15:20:28,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 220 transitions. [2021-03-25 15:20:28,579 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2021-03-25 15:20:28,579 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 220 transitions. [2021-03-25 15:20:28,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 220 transitions. [2021-03-25 15:20:28,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:20:28,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 220 transitions. [2021-03-25 15:20:28,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 110.0) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:20:28,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:20:28,582 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:20:28,582 INFO L185 Difference]: Start difference. First operand has 12 places, 8 transitions, 23 flow. Second operand 2 states and 220 transitions. [2021-03-25 15:20:28,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 7 transitions, 29 flow [2021-03-25 15:20:28,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 7 transitions, 25 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 15:20:28,583 INFO L241 Difference]: Finished difference. Result has 10 places, 7 transitions, 15 flow [2021-03-25 15:20:28,583 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=15, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=15, PETRI_PLACES=10, PETRI_TRANSITIONS=7} [2021-03-25 15:20:28,584 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, -17 predicate places. [2021-03-25 15:20:28,584 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:20:28,584 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 10 places, 7 transitions, 15 flow [2021-03-25 15:20:28,584 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 10 places, 7 transitions, 15 flow [2021-03-25 15:20:28,585 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 9 places, 7 transitions, 15 flow [2021-03-25 15:20:28,586 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-25 15:20:28,586 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 15:20:28,587 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9 conditions, 7 events. 0/7 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 0/7 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-25 15:20:28,587 INFO L142 LiptonReduction]: Number of co-enabled transitions 4 [2021-03-25 15:20:29,117 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-03-25 15:20:29,249 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-03-25 15:20:29,420 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-03-25 15:20:29,559 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-03-25 15:20:29,568 INFO L154 LiptonReduction]: Checked pairs total: 6 [2021-03-25 15:20:29,568 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 15:20:29,569 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 985 [2021-03-25 15:20:29,569 INFO L480 AbstractCegarLoop]: Abstraction has has 7 places, 5 transitions, 11 flow [2021-03-25 15:20:29,570 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:20:29,570 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:20:29,570 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-25 15:20:29,570 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 15:20:29,570 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 15:20:29,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:20:29,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1025757088, now seen corresponding path program 1 times [2021-03-25 15:20:29,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:20:29,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929228761] [2021-03-25 15:20:29,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:20:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:20:29,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:20:29,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:20:29,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:20:29,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:20:29,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:20:29,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929228761] [2021-03-25 15:20:29,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 15:20:29,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 15:20:29,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162084242] [2021-03-25 15:20:29,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 15:20:29,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:20:29,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 15:20:29,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 15:20:29,677 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 156 [2021-03-25 15:20:29,678 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 7 places, 5 transitions, 11 flow. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:20:29,678 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:20:29,678 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 156 [2021-03-25 15:20:29,678 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:20:29,691 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-25 15:20:29,691 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 15:20:29,692 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16 conditions, 7 events. 0/7 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 2/9 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-25 15:20:29,692 INFO L132 encePairwiseOnDemand]: 153/156 looper letters, 2 selfloop transitions, 2 changer transitions 1/6 dead transitions. [2021-03-25 15:20:29,692 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 9 places, 6 transitions, 23 flow [2021-03-25 15:20:29,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 15:20:29,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 15:20:29,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 327 transitions. [2021-03-25 15:20:29,693 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6987179487179487 [2021-03-25 15:20:29,693 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 327 transitions. [2021-03-25 15:20:29,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 327 transitions. [2021-03-25 15:20:29,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:20:29,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 327 transitions. [2021-03-25 15:20:29,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:20:29,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:20:29,696 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:20:29,696 INFO L185 Difference]: Start difference. First operand has 7 places, 5 transitions, 11 flow. Second operand 3 states and 327 transitions. [2021-03-25 15:20:29,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 9 places, 6 transitions, 23 flow [2021-03-25 15:20:29,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 9 places, 6 transitions, 23 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 15:20:29,697 INFO L241 Difference]: Finished difference. Result has 10 places, 5 transitions, 19 flow [2021-03-25 15:20:29,697 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=11, PETRI_DIFFERENCE_MINUEND_PLACES=7, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=19, PETRI_PLACES=10, PETRI_TRANSITIONS=5} [2021-03-25 15:20:29,697 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, -17 predicate places. [2021-03-25 15:20:29,698 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:20:29,698 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 10 places, 5 transitions, 19 flow [2021-03-25 15:20:29,698 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 10 places, 5 transitions, 19 flow [2021-03-25 15:20:29,698 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 10 places, 5 transitions, 19 flow [2021-03-25 15:20:29,699 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2021-03-25 15:20:29,700 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:20:29,700 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13 conditions, 5 events. 0/5 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/5 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 15:20:29,700 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 15:20:29,700 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 15:20:29,700 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 15:20:29,700 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-25 15:20:29,701 INFO L480 AbstractCegarLoop]: Abstraction has has 10 places, 5 transitions, 19 flow [2021-03-25 15:20:29,701 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:20:29,702 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:20:29,702 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-25 15:20:29,702 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 15:20:29,702 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 15:20:29,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:20:29,702 INFO L82 PathProgramCache]: Analyzing trace with hash 311875022, now seen corresponding path program 1 times [2021-03-25 15:20:29,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:20:29,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717091758] [2021-03-25 15:20:29,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:20:29,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 15:20:29,732 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 15:20:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 15:20:29,752 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 15:20:29,782 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 15:20:29,782 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 15:20:29,784 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 15:20:29,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 03:20:29 BasicIcfg [2021-03-25 15:20:29,811 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 15:20:29,813 INFO L168 Benchmark]: Toolchain (without parser) took 6802.97 ms. Allocated memory was 255.9 MB in the beginning and 421.5 MB in the end (delta: 165.7 MB). Free memory was 232.5 MB in the beginning and 373.8 MB in the end (delta: -141.2 MB). Peak memory consumption was 24.0 MB. Max. memory is 16.0 GB. [2021-03-25 15:20:29,813 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 15:20:29,813 INFO L168 Benchmark]: CACSL2BoogieTranslator took 961.91 ms. Allocated memory was 255.9 MB in the beginning and 350.2 MB in the end (delta: 94.4 MB). Free memory was 232.5 MB in the beginning and 325.9 MB in the end (delta: -93.4 MB). Peak memory consumption was 65.5 MB. Max. memory is 16.0 GB. [2021-03-25 15:20:29,821 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.44 ms. Allocated memory is still 350.2 MB. Free memory was 325.9 MB in the beginning and 322.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 15:20:29,821 INFO L168 Benchmark]: Boogie Preprocessor took 28.12 ms. Allocated memory is still 350.2 MB. Free memory was 322.8 MB in the beginning and 320.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 15:20:29,821 INFO L168 Benchmark]: RCFGBuilder took 576.89 ms. Allocated memory is still 350.2 MB. Free memory was 320.7 MB in the beginning and 279.8 MB in the end (delta: 40.9 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.0 GB. [2021-03-25 15:20:29,822 INFO L168 Benchmark]: TraceAbstraction took 5168.52 ms. Allocated memory was 350.2 MB in the beginning and 421.5 MB in the end (delta: 71.3 MB). Free memory was 279.8 MB in the beginning and 373.8 MB in the end (delta: -94.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 15:20:29,830 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 961.91 ms. Allocated memory was 255.9 MB in the beginning and 350.2 MB in the end (delta: 94.4 MB). Free memory was 232.5 MB in the beginning and 325.9 MB in the end (delta: -93.4 MB). Peak memory consumption was 65.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 62.44 ms. Allocated memory is still 350.2 MB. Free memory was 325.9 MB in the beginning and 322.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.12 ms. Allocated memory is still 350.2 MB. Free memory was 322.8 MB in the beginning and 320.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 576.89 ms. Allocated memory is still 350.2 MB. Free memory was 320.7 MB in the beginning and 279.8 MB in the end (delta: 40.9 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5168.52 ms. Allocated memory was 350.2 MB in the beginning and 421.5 MB in the end (delta: 71.3 MB). Free memory was 279.8 MB in the beginning and 373.8 MB in the end (delta: -94.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2700.3ms, 77 PlacesBefore, 27 PlacesAfterwards, 76 TransitionsBefore, 26 TransitionsAfterwards, 168 CoEnabledTransitionPairs, 6 FixpointIterations, 41 TrivialSequentialCompositions, 13 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 61 TotalNumberOfCompositions, 159 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 147, positive: 133, positive conditional: 0, positive unconditional: 133, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 113, positive: 105, positive conditional: 0, positive unconditional: 105, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 113, positive: 105, positive conditional: 0, positive unconditional: 105, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 113, positive: 104, positive conditional: 0, positive unconditional: 104, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 9, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 42, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 147, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 113, unknown conditional: 0, unknown unconditional: 113] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 2, Positive conditional cache size: 0, Positive unconditional cache size: 2, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 562.1ms, 24 PlacesBefore, 12 PlacesAfterwards, 14 TransitionsBefore, 8 TransitionsAfterwards, 12 CoEnabledTransitionPairs, 3 FixpointIterations, 4 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 16 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 5, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 9, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 14, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , Statistics on independence cache: Total cache size (in pairs): 2, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 984.1ms, 10 PlacesBefore, 7 PlacesAfterwards, 7 TransitionsBefore, 5 TransitionsAfterwards, 4 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 6 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 6, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 2, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3ms, 10 PlacesBefore, 10 PlacesAfterwards, 5 TransitionsBefore, 5 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 2, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - CounterExampleResult [Line: 1695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1696] 0 pthread_t t1; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [L1709] 0 pdev = 1 [L1695] COND FALSE 0 !(!expression) [L1711] COND TRUE 0 __VERIFIER_nondet_int() [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={7:0}, pdev=1, t1={5:0}] [L1713] 0 return 0; [L1734] COND FALSE 0 !(module_init()!=0) [L1721] 0 void *status; [L1723] 0 pdev = 4 VAL [arg={0:0}, mutex={7:0}, pdev=4, t1={5:0}] [L1702] 1 pdev = 6 [L1705] 1 return 0; [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [\result={0:0}, arg={0:0}, arg={0:0}, mutex={7:0}, pdev=6, t1={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 83 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 1.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 5069.0ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 130.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2766.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 17 SDtfs, 1 SDslu, 0 SDs, 0 SdLazy, 14 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=0, InterpolantAutomatonStates: 8, 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: 12.1ms SsaConstructionTime, 89.7ms SatisfiabilityAnalysisTime, 248.5ms InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 21 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...