/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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-lit/qw2004-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 11:09:42,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 11:09:42,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 11:09:42,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 11:09:42,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 11:09:42,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 11:09:42,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 11:09:42,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 11:09:42,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 11:09:42,099 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 11:09:42,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 11:09:42,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 11:09:42,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 11:09:42,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 11:09:42,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 11:09:42,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 11:09:42,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 11:09:42,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 11:09:42,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 11:09:42,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 11:09:42,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 11:09:42,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 11:09:42,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 11:09:42,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 11:09:42,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-24 11:09:42,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-24 11:09:42,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-24 11:09:42,115 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-24 11:09:42,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-24 11:09:42,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-24 11:09:42,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 11:09:42,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 11:09:42,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 11:09:42,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 11:09:42,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 11:09:42,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 11:09:42,121 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 11:09:42,121 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 11:09:42,121 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 11:09:42,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 11:09:42,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 11:09:42,136 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-VariableLbe.epf [2021-03-24 11:09:42,167 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 11:09:42,168 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 11:09:42,168 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 11:09:42,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 11:09:42,169 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 11:09:42,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 11:09:42,169 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 11:09:42,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 11:09:42,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 11:09:42,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 11:09:42,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 11:09:42,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 11:09:42,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 11:09:42,169 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 11:09:42,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 11:09:42,169 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 11:09:42,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 11:09:42,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 11:09:42,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 11:09:42,170 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 11:09:42,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 11:09:42,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 11:09:42,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 11:09:42,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 11:09:42,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 11:09:42,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 11:09:42,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 11:09:42,171 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 11:09:42,171 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 11:09:42,171 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 11:09:42,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 11:09:42,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 11:09:42,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 11:09:42,530 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 11:09:42,530 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 11:09:42,531 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-2.i [2021-03-24 11:09:42,602 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d4e7c564/3ab6f49a7f50477f8f39b4a66bda137d/FLAGcb65cda99 [2021-03-24 11:09:43,010 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 11:09:43,010 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2.i [2021-03-24 11:09:43,032 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d4e7c564/3ab6f49a7f50477f8f39b4a66bda137d/FLAGcb65cda99 [2021-03-24 11:09:43,042 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d4e7c564/3ab6f49a7f50477f8f39b4a66bda137d [2021-03-24 11:09:43,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 11:09:43,045 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 11:09:43,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 11:09:43,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 11:09:43,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 11:09:43,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:09:43" (1/1) ... [2021-03-24 11:09:43,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b871563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:43, skipping insertion in model container [2021-03-24 11:09:43,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:09:43" (1/1) ... [2021-03-24 11:09:43,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 11:09:43,085 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 11:09:43,234 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2.i[30003,30016] [2021-03-24 11:09:43,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:09:43,270 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 11:09:43,313 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2.i[30003,30016] [2021-03-24 11:09:43,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:09:43,365 INFO L208 MainTranslator]: Completed translation [2021-03-24 11:09:43,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:43 WrapperNode [2021-03-24 11:09:43,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 11:09:43,367 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 11:09:43,368 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 11:09:43,368 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 11:09:43,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:43" (1/1) ... [2021-03-24 11:09:43,395 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:43" (1/1) ... [2021-03-24 11:09:43,416 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 11:09:43,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 11:09:43,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 11:09:43,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 11:09:43,422 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:43" (1/1) ... [2021-03-24 11:09:43,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:43" (1/1) ... [2021-03-24 11:09:43,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:43" (1/1) ... [2021-03-24 11:09:43,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:43" (1/1) ... [2021-03-24 11:09:43,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:43" (1/1) ... [2021-03-24 11:09:43,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:43" (1/1) ... [2021-03-24 11:09:43,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:43" (1/1) ... [2021-03-24 11:09:43,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 11:09:43,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 11:09:43,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 11:09:43,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 11:09:43,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:43" (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 [2021-03-24 11:09:43,499 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2021-03-24 11:09:43,499 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2021-03-24 11:09:43,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 11:09:43,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 11:09:43,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 11:09:43,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 11:09:43,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 11:09:43,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 11:09:43,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 11:09:43,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 11:09:43,502 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 11:09:43,865 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 11:09:43,865 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-03-24 11:09:43,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:09:43 BoogieIcfgContainer [2021-03-24 11:09:43,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 11:09:43,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 11:09:43,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 11:09:43,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 11:09:43,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 11:09:43" (1/3) ... [2021-03-24 11:09:43,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6147c12a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:09:43, skipping insertion in model container [2021-03-24 11:09:43,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:43" (2/3) ... [2021-03-24 11:09:43,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6147c12a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:09:43, skipping insertion in model container [2021-03-24 11:09:43,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:09:43" (3/3) ... [2021-03-24 11:09:43,873 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-2.i [2021-03-24 11:09:43,880 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 11:09:43,884 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 11:09:43,885 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 11:09:43,911 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,913 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,913 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,914 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,914 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,914 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,915 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,915 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,915 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,915 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,915 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,915 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,915 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,915 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,915 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,916 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,916 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,916 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,916 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,916 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,916 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,916 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,916 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,916 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,917 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,917 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,917 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,917 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,917 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,918 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,918 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,918 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,918 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,918 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,918 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,918 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,920 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,920 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,921 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,921 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,921 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,922 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,922 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,922 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,922 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,923 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,923 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,923 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,923 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,923 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,923 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,923 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,923 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,923 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,923 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,923 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,924 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,924 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,924 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,924 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,925 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,925 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,925 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,925 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,926 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,927 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,927 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,927 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,927 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,927 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,927 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,927 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,928 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,928 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,928 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,928 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:43,930 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 11:09:43,942 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-24 11:09:43,955 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 11:09:43,956 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 11:09:43,956 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 11:09:43,956 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 11:09:43,956 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 11:09:43,956 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 11:09:43,956 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 11:09:43,956 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 11:09:43,963 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 94 places, 96 transitions, 197 flow [2021-03-24 11:09:43,992 INFO L129 PetriNetUnfolder]: 6/95 cut-off events. [2021-03-24 11:09:43,992 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:09:43,995 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 95 events. 6/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 97 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 75. Up to 3 conditions per place. [2021-03-24 11:09:43,996 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 96 transitions, 197 flow [2021-03-24 11:09:43,999 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 95 transitions, 193 flow [2021-03-24 11:09:44,000 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 11:09:44,005 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 95 transitions, 193 flow [2021-03-24 11:09:44,007 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 95 transitions, 193 flow [2021-03-24 11:09:44,008 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 93 places, 95 transitions, 193 flow [2021-03-24 11:09:44,022 INFO L129 PetriNetUnfolder]: 6/95 cut-off events. [2021-03-24 11:09:44,022 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:09:44,022 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 95 events. 6/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 96 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 75. Up to 3 conditions per place. [2021-03-24 11:09:44,025 INFO L142 LiptonReduction]: Number of co-enabled transitions 2500 [2021-03-24 11:09:45,253 INFO L154 LiptonReduction]: Checked pairs total: 1994 [2021-03-24 11:09:45,253 INFO L156 LiptonReduction]: Total number of compositions: 75 [2021-03-24 11:09:45,255 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1256 [2021-03-24 11:09:45,261 INFO L129 PetriNetUnfolder]: 3/21 cut-off events. [2021-03-24 11:09:45,261 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:09:45,261 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:09:45,262 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:09:45,262 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:09:45,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:09:45,265 INFO L82 PathProgramCache]: Analyzing trace with hash 829912263, now seen corresponding path program 1 times [2021-03-24 11:09:45,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:09:45,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876815682] [2021-03-24 11:09:45,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:09:45,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:09:45,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:45,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:09:45,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:45,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:09:45,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:45,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:09:45,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:45,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:09:45,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:09:45,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876815682] [2021-03-24 11:09:45,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:09:45,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:09:45,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752622702] [2021-03-24 11:09:45,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:09:45,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:09:45,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:09:45,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:09:45,421 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 171 [2021-03-24 11:09:45,423 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 38 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 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) [2021-03-24 11:09:45,423 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:09:45,424 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 171 [2021-03-24 11:09:45,424 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:09:45,459 INFO L129 PetriNetUnfolder]: 10/74 cut-off events. [2021-03-24 11:09:45,460 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:09:45,460 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 74 events. 10/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 269 event pairs, 0 based on Foata normal form. 6/66 useless extension candidates. Maximal degree in co-relation 77. Up to 6 conditions per place. [2021-03-24 11:09:45,461 INFO L132 encePairwiseOnDemand]: 164/171 looper letters, 5 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2021-03-24 11:09:45,461 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 38 transitions, 99 flow [2021-03-24 11:09:45,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:09:45,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:09:45,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 742 transitions. [2021-03-24 11:09:45,471 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8678362573099415 [2021-03-24 11:09:45,472 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 742 transitions. [2021-03-24 11:09:45,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 742 transitions. [2021-03-24 11:09:45,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:09:45,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 742 transitions. [2021-03-24 11:09:45,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.4) internal successors, (742), 5 states have internal predecessors, (742), 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) [2021-03-24 11:09:45,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 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) [2021-03-24 11:09:45,486 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 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) [2021-03-24 11:09:45,487 INFO L185 Difference]: Start difference. First operand has 36 places, 38 transitions, 79 flow. Second operand 5 states and 742 transitions. [2021-03-24 11:09:45,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 38 transitions, 99 flow [2021-03-24 11:09:45,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 38 transitions, 98 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 11:09:45,490 INFO L241 Difference]: Finished difference. Result has 41 places, 37 transitions, 104 flow [2021-03-24 11:09:45,491 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=104, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2021-03-24 11:09:45,492 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2021-03-24 11:09:45,492 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 104 flow [2021-03-24 11:09:45,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 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) [2021-03-24 11:09:45,492 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:09:45,492 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:09:45,492 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 11:09:45,492 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:09:45,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:09:45,493 INFO L82 PathProgramCache]: Analyzing trace with hash -22949499, now seen corresponding path program 1 times [2021-03-24 11:09:45,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:09:45,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973226230] [2021-03-24 11:09:45,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:09:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:09:45,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:45,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:09:45,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:45,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 11:09:45,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:45,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:09:45,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:09:45,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973226230] [2021-03-24 11:09:45,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:09:45,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:09:45,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299542504] [2021-03-24 11:09:45,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 11:09:45,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:09:45,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 11:09:45,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 11:09:45,539 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 171 [2021-03-24 11:09:45,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 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) [2021-03-24 11:09:45,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:09:45,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 171 [2021-03-24 11:09:45,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:09:45,567 INFO L129 PetriNetUnfolder]: 7/68 cut-off events. [2021-03-24 11:09:45,567 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-03-24 11:09:45,568 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 68 events. 7/68 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 242 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 85. Up to 10 conditions per place. [2021-03-24 11:09:45,568 INFO L132 encePairwiseOnDemand]: 168/171 looper letters, 6 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2021-03-24 11:09:45,568 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 38 transitions, 120 flow [2021-03-24 11:09:45,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 11:09:45,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 11:09:45,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 453 transitions. [2021-03-24 11:09:45,569 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8830409356725146 [2021-03-24 11:09:45,569 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 453 transitions. [2021-03-24 11:09:45,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 453 transitions. [2021-03-24 11:09:45,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:09:45,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 453 transitions. [2021-03-24 11:09:45,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 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) [2021-03-24 11:09:45,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 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) [2021-03-24 11:09:45,578 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 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) [2021-03-24 11:09:45,578 INFO L185 Difference]: Start difference. First operand has 41 places, 37 transitions, 104 flow. Second operand 3 states and 453 transitions. [2021-03-24 11:09:45,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 38 transitions, 120 flow [2021-03-24 11:09:45,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 38 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-24 11:09:45,579 INFO L241 Difference]: Finished difference. Result has 44 places, 37 transitions, 111 flow [2021-03-24 11:09:45,579 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2021-03-24 11:09:45,580 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, 8 predicate places. [2021-03-24 11:09:45,580 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 111 flow [2021-03-24 11:09:45,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 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) [2021-03-24 11:09:45,580 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:09:45,580 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:09:45,580 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 11:09:45,581 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:09:45,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:09:45,581 INFO L82 PathProgramCache]: Analyzing trace with hash -43504328, now seen corresponding path program 1 times [2021-03-24 11:09:45,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:09:45,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559754049] [2021-03-24 11:09:45,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:09:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:09:45,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:45,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:09:45,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:45,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:09:45,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:45,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 11:09:45,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:09:45,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559754049] [2021-03-24 11:09:45,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:09:45,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:09:45,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259231435] [2021-03-24 11:09:45,664 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:09:45,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:09:45,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:09:45,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:09:45,666 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 171 [2021-03-24 11:09:45,666 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 111 flow. Second operand has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 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) [2021-03-24 11:09:45,666 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:09:45,666 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 171 [2021-03-24 11:09:45,666 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:09:45,706 INFO L129 PetriNetUnfolder]: 12/99 cut-off events. [2021-03-24 11:09:45,706 INFO L130 PetriNetUnfolder]: For 17/18 co-relation queries the response was YES. [2021-03-24 11:09:45,707 INFO L84 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 99 events. 12/99 cut-off events. For 17/18 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 394 event pairs, 0 based on Foata normal form. 3/86 useless extension candidates. Maximal degree in co-relation 129. Up to 12 conditions per place. [2021-03-24 11:09:45,707 INFO L132 encePairwiseOnDemand]: 166/171 looper letters, 3 selfloop transitions, 5 changer transitions 1/40 dead transitions. [2021-03-24 11:09:45,707 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 139 flow [2021-03-24 11:09:45,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:09:45,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:09:45,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 751 transitions. [2021-03-24 11:09:45,712 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8783625730994152 [2021-03-24 11:09:45,712 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 751 transitions. [2021-03-24 11:09:45,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 751 transitions. [2021-03-24 11:09:45,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:09:45,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 751 transitions. [2021-03-24 11:09:45,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.2) internal successors, (751), 5 states have internal predecessors, (751), 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) [2021-03-24 11:09:45,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 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) [2021-03-24 11:09:45,717 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 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) [2021-03-24 11:09:45,717 INFO L185 Difference]: Start difference. First operand has 44 places, 37 transitions, 111 flow. Second operand 5 states and 751 transitions. [2021-03-24 11:09:45,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 139 flow [2021-03-24 11:09:45,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 40 transitions, 138 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 11:09:45,719 INFO L241 Difference]: Finished difference. Result has 50 places, 39 transitions, 140 flow [2021-03-24 11:09:45,719 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=140, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2021-03-24 11:09:45,719 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, 14 predicate places. [2021-03-24 11:09:45,719 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 140 flow [2021-03-24 11:09:45,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 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) [2021-03-24 11:09:45,720 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:09:45,720 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:09:45,720 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 11:09:45,720 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:09:45,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:09:45,720 INFO L82 PathProgramCache]: Analyzing trace with hash -284483879, now seen corresponding path program 1 times [2021-03-24 11:09:45,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:09:45,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701226473] [2021-03-24 11:09:45,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:09:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:09:45,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:45,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:09:45,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:45,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:09:45,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:45,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:09:45,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:45,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:09:45,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:45,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:09:45,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:09:45,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701226473] [2021-03-24 11:09:45,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:09:45,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 11:09:45,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465270950] [2021-03-24 11:09:45,781 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:09:45,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:09:45,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:09:45,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:09:45,783 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 171 [2021-03-24 11:09:45,784 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 140 flow. Second operand has 5 states, 5 states have (on average 139.2) internal successors, (696), 5 states have internal predecessors, (696), 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) [2021-03-24 11:09:45,784 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:09:45,784 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 171 [2021-03-24 11:09:45,784 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:09:45,865 INFO L129 PetriNetUnfolder]: 46/163 cut-off events. [2021-03-24 11:09:45,865 INFO L130 PetriNetUnfolder]: For 40/41 co-relation queries the response was YES. [2021-03-24 11:09:45,866 INFO L84 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 163 events. 46/163 cut-off events. For 40/41 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 825 event pairs, 0 based on Foata normal form. 7/129 useless extension candidates. Maximal degree in co-relation 298. Up to 66 conditions per place. [2021-03-24 11:09:45,866 INFO L132 encePairwiseOnDemand]: 165/171 looper letters, 5 selfloop transitions, 2 changer transitions 25/48 dead transitions. [2021-03-24 11:09:45,866 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 48 transitions, 198 flow [2021-03-24 11:09:45,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 11:09:45,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 11:09:45,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 987 transitions. [2021-03-24 11:09:45,869 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8245614035087719 [2021-03-24 11:09:45,869 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 987 transitions. [2021-03-24 11:09:45,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 987 transitions. [2021-03-24 11:09:45,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:09:45,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 987 transitions. [2021-03-24 11:09:45,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 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) [2021-03-24 11:09:45,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 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) [2021-03-24 11:09:45,876 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 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) [2021-03-24 11:09:45,876 INFO L185 Difference]: Start difference. First operand has 50 places, 39 transitions, 140 flow. Second operand 7 states and 987 transitions. [2021-03-24 11:09:45,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 48 transitions, 198 flow [2021-03-24 11:09:45,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 48 transitions, 196 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 11:09:45,880 INFO L241 Difference]: Finished difference. Result has 59 places, 23 transitions, 96 flow [2021-03-24 11:09:45,880 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=96, PETRI_PLACES=59, PETRI_TRANSITIONS=23} [2021-03-24 11:09:45,881 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, 23 predicate places. [2021-03-24 11:09:45,881 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 23 transitions, 96 flow [2021-03-24 11:09:45,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 139.2) internal successors, (696), 5 states have internal predecessors, (696), 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) [2021-03-24 11:09:45,881 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:09:45,882 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:09:45,882 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 11:09:45,882 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:09:45,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:09:45,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1549527005, now seen corresponding path program 1 times [2021-03-24 11:09:45,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:09:45,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158632468] [2021-03-24 11:09:45,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:09:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:09:45,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:45,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:09:45,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:45,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:09:45,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:45,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:09:45,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:45,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:09:45,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:09:45,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158632468] [2021-03-24 11:09:45,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:09:45,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:09:45,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930407239] [2021-03-24 11:09:45,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:09:45,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:09:45,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:09:45,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:09:45,948 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 171 [2021-03-24 11:09:45,949 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 23 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 146.25) internal successors, (585), 4 states have internal predecessors, (585), 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) [2021-03-24 11:09:45,949 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:09:45,949 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 171 [2021-03-24 11:09:45,949 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:09:45,973 INFO L129 PetriNetUnfolder]: 1/38 cut-off events. [2021-03-24 11:09:45,973 INFO L130 PetriNetUnfolder]: For 38/40 co-relation queries the response was YES. [2021-03-24 11:09:45,974 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 38 events. 1/38 cut-off events. For 38/40 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 3/41 useless extension candidates. Maximal degree in co-relation 83. Up to 5 conditions per place. [2021-03-24 11:09:45,975 INFO L132 encePairwiseOnDemand]: 168/171 looper letters, 5 selfloop transitions, 1 changer transitions 2/23 dead transitions. [2021-03-24 11:09:45,975 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 23 transitions, 110 flow [2021-03-24 11:09:45,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 11:09:45,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 11:09:45,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 588 transitions. [2021-03-24 11:09:45,980 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8596491228070176 [2021-03-24 11:09:45,980 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 588 transitions. [2021-03-24 11:09:45,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 588 transitions. [2021-03-24 11:09:45,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:09:45,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 588 transitions. [2021-03-24 11:09:45,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 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) [2021-03-24 11:09:45,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 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) [2021-03-24 11:09:45,985 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 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) [2021-03-24 11:09:45,985 INFO L185 Difference]: Start difference. First operand has 59 places, 23 transitions, 96 flow. Second operand 4 states and 588 transitions. [2021-03-24 11:09:45,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 23 transitions, 110 flow [2021-03-24 11:09:45,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 23 transitions, 85 flow, removed 7 selfloop flow, removed 13 redundant places. [2021-03-24 11:09:45,987 INFO L241 Difference]: Finished difference. Result has 32 places, 20 transitions, 58 flow [2021-03-24 11:09:45,987 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=58, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2021-03-24 11:09:45,987 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2021-03-24 11:09:45,987 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 58 flow [2021-03-24 11:09:45,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 146.25) internal successors, (585), 4 states have internal predecessors, (585), 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) [2021-03-24 11:09:45,988 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:09:45,988 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:09:45,988 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 11:09:45,988 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:09:45,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:09:45,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1376418101, now seen corresponding path program 2 times [2021-03-24 11:09:45,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:09:45,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005350616] [2021-03-24 11:09:45,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:09:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 11:09:46,010 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 11:09:46,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 11:09:46,017 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 11:09:46,040 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-24 11:09:46,041 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-24 11:09:46,041 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 11:09:46,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 11:09:46 BasicIcfg [2021-03-24 11:09:46,085 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 11:09:46,086 INFO L168 Benchmark]: Toolchain (without parser) took 3041.07 ms. Allocated memory was 346.0 MB in the beginning and 432.0 MB in the end (delta: 86.0 MB). Free memory was 309.1 MB in the beginning and 374.0 MB in the end (delta: -64.9 MB). Peak memory consumption was 24.2 MB. Max. memory is 16.0 GB. [2021-03-24 11:09:46,086 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 346.0 MB. Free memory was 327.6 MB in the beginning and 327.6 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 11:09:46,087 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.97 ms. Allocated memory is still 346.0 MB. Free memory was 308.9 MB in the beginning and 309.5 MB in the end (delta: -629.5 kB). Peak memory consumption was 4.9 MB. Max. memory is 16.0 GB. [2021-03-24 11:09:46,087 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.99 ms. Allocated memory is still 346.0 MB. Free memory was 309.5 MB in the beginning and 307.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:09:46,087 INFO L168 Benchmark]: Boogie Preprocessor took 25.79 ms. Allocated memory is still 346.0 MB. Free memory was 307.4 MB in the beginning and 306.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:09:46,088 INFO L168 Benchmark]: RCFGBuilder took 423.71 ms. Allocated memory is still 346.0 MB. Free memory was 306.4 MB in the beginning and 277.0 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2021-03-24 11:09:46,088 INFO L168 Benchmark]: TraceAbstraction took 2216.27 ms. Allocated memory was 346.0 MB in the beginning and 432.0 MB in the end (delta: 86.0 MB). Free memory was 277.0 MB in the beginning and 374.0 MB in the end (delta: -96.9 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 11:09:46,090 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 346.0 MB. Free memory was 327.6 MB in the beginning and 327.6 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 320.97 ms. Allocated memory is still 346.0 MB. Free memory was 308.9 MB in the beginning and 309.5 MB in the end (delta: -629.5 kB). Peak memory consumption was 4.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 48.99 ms. Allocated memory is still 346.0 MB. Free memory was 309.5 MB in the beginning and 307.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 25.79 ms. Allocated memory is still 346.0 MB. Free memory was 307.4 MB in the beginning and 306.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 423.71 ms. Allocated memory is still 346.0 MB. Free memory was 306.4 MB in the beginning and 277.0 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2216.27 ms. Allocated memory was 346.0 MB in the beginning and 432.0 MB in the end (delta: 86.0 MB). Free memory was 277.0 MB in the beginning and 374.0 MB in the end (delta: -96.9 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: 1246.1ms, 93 PlacesBefore, 36 PlacesAfterwards, 95 TransitionsBefore, 38 TransitionsAfterwards, 2500 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 0 ChoiceCompositions, 75 TotalNumberOfCompositions, 1994 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1744, positive: 1719, positive conditional: 0, positive unconditional: 1719, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1255, positive: 1239, positive conditional: 0, positive unconditional: 1239, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1255, positive: 1239, positive conditional: 0, positive unconditional: 1239, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1744, positive: 480, positive conditional: 0, positive unconditional: 480, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 1255, unknown conditional: 0, unknown unconditional: 1255] , Statistics on independence cache: Total cache size (in pairs): 88, Positive cache size: 85, Positive conditional cache size: 0, Positive unconditional cache size: 85, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - CounterExampleResult [Line: 690]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L697] 0 volatile int stoppingFlag; [L698] 0 volatile int pendingIo; [L699] 0 volatile int stoppingEvent; [L700] 0 volatile int stopped; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=0] [L755] 0 pthread_t t; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=0] [L756] 0 pendingIo = 1 [L757] 0 stoppingFlag = 0 [L758] 0 stoppingEvent = 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L759] 0 stopped = 0 [L760] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L734] 0 int status; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L703] 0 int lsf = stoppingFlag; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L705] COND FALSE 0 !(\read(lsf)) [L709] 0 int lp = pendingIo; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L744] 1 stoppingFlag = 1 [L725] 1 int pending; [L719] 1 pendingIo-- [L720] 1 int tmp = pendingIo; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1] [L722] 1 return tmp; [L726] 1 pending = dec() [L727] COND TRUE 1 pending == 0 [L729] 1 stoppingEvent = 1 VAL [pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L748] 1 int lse = stoppingEvent; VAL [pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L686] COND FALSE 1 !(!cond) [L751] 1 stopped = 1 [L752] 1 return 0; VAL [pendingIo=0, stopped=1, stoppingEvent=1, stoppingFlag=1] [L712] 0 pendingIo = lp + 1 [L715] 0 return 0; [L735] 0 status = BCSP_IoIncrement() [L736] COND TRUE 0 status == 0 [L689] COND TRUE 0 !(cond) [L690] 0 reach_error() VAL [pendingIo=2, stopped=1, stoppingEvent=1, stoppingFlag=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 91 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 2088.7ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 321.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1301.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 28 SDtfs, 19 SDslu, 27 SDs, 0 SdLazy, 50 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 82.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 59.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=140occurred in iteration=3, InterpolantAutomatonStates: 24, 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: 10.1ms SsaConstructionTime, 55.6ms SatisfiabilityAnalysisTime, 234.4ms InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 121 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...