/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-lit/qw2004-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-18 22:54:01,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 22:54:01,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 22:54:01,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 22:54:01,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 22:54:01,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 22:54:01,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 22:54:01,662 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 22:54:01,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 22:54:01,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 22:54:01,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 22:54:01,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 22:54:01,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 22:54:01,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 22:54:01,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 22:54:01,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 22:54:01,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 22:54:01,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 22:54:01,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 22:54:01,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 22:54:01,688 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-01-18 22:54:01,716 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 22:54:01,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 22:54:01,717 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 22:54:01,718 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 22:54:01,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 22:54:01,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 22:54:01,718 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 22:54:01,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 22:54:01,718 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 22:54:01,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 22:54:01,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 22:54:01,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 22:54:01,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 22:54:01,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 22:54:01,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 22:54:01,719 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 22:54:01,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 22:54:01,720 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 22:54:01,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 22:54:01,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 22:54:01,720 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 22:54:01,720 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 22:54:01,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 22:54:01,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 22:54:01,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 22:54:01,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 22:54:01,720 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 22:54:01,722 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 22:54:01,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 22:54:01,722 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 22:54:01,722 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-18 22:54:01,722 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 22:54:01,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 22:54:01,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 22:54:01,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 22:54:01,946 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 22:54:01,946 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 22:54:01,947 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-1.i [2022-01-18 22:54:01,996 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b95dfab70/df77982bd4b44663abbcb9459510d94b/FLAG1cd7b6eb9 [2022-01-18 22:54:02,410 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 22:54:02,410 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-1.i [2022-01-18 22:54:02,425 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b95dfab70/df77982bd4b44663abbcb9459510d94b/FLAG1cd7b6eb9 [2022-01-18 22:54:02,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b95dfab70/df77982bd4b44663abbcb9459510d94b [2022-01-18 22:54:02,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 22:54:02,779 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 22:54:02,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 22:54:02,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 22:54:02,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 22:54:02,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 10:54:02" (1/1) ... [2022-01-18 22:54:02,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eda165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:54:02, skipping insertion in model container [2022-01-18 22:54:02,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 10:54:02" (1/1) ... [2022-01-18 22:54:02,789 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 22:54:02,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 22:54:03,005 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-1.i[30003,30016] [2022-01-18 22:54:03,035 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 22:54:03,044 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 22:54:03,090 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-1.i[30003,30016] [2022-01-18 22:54:03,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 22:54:03,119 INFO L208 MainTranslator]: Completed translation [2022-01-18 22:54:03,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:54:03 WrapperNode [2022-01-18 22:54:03,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 22:54:03,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 22:54:03,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 22:54:03,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 22:54:03,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:54:03" (1/1) ... [2022-01-18 22:54:03,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:54:03" (1/1) ... [2022-01-18 22:54:03,171 INFO L137 Inliner]: procedures = 175, calls = 23, calls flagged for inlining = 9, calls inlined = 10, statements flattened = 98 [2022-01-18 22:54:03,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 22:54:03,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 22:54:03,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 22:54:03,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 22:54:03,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:54:03" (1/1) ... [2022-01-18 22:54:03,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:54:03" (1/1) ... [2022-01-18 22:54:03,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:54:03" (1/1) ... [2022-01-18 22:54:03,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:54:03" (1/1) ... [2022-01-18 22:54:03,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:54:03" (1/1) ... [2022-01-18 22:54:03,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:54:03" (1/1) ... [2022-01-18 22:54:03,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:54:03" (1/1) ... [2022-01-18 22:54:03,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 22:54:03,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 22:54:03,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 22:54:03,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 22:54:03,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:54:03" (1/1) ... [2022-01-18 22:54:03,215 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 22:54:03,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 22:54:03,232 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 22:54:03,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 22:54:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2022-01-18 22:54:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2022-01-18 22:54:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 22:54:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 22:54:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 22:54:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 22:54:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 22:54:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 22:54:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 22:54:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 22:54:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 22:54:03,267 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 22:54:03,354 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 22:54:03,355 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 22:54:03,481 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 22:54:03,500 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 22:54:03,501 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 22:54:03,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 10:54:03 BoogieIcfgContainer [2022-01-18 22:54:03,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 22:54:03,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 22:54:03,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 22:54:03,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 22:54:03,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 10:54:02" (1/3) ... [2022-01-18 22:54:03,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@607bd3fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 10:54:03, skipping insertion in model container [2022-01-18 22:54:03,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:54:03" (2/3) ... [2022-01-18 22:54:03,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@607bd3fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 10:54:03, skipping insertion in model container [2022-01-18 22:54:03,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 10:54:03" (3/3) ... [2022-01-18 22:54:03,507 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-1.i [2022-01-18 22:54:03,511 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 22:54:03,511 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 22:54:03,511 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 22:54:03,542 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,543 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,543 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,543 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,543 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,543 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,543 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,543 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,544 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,544 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,544 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,544 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,544 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,544 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,544 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,544 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,544 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,545 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,545 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,545 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,545 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,545 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,545 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,545 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,546 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,546 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,546 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,546 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,546 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,546 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,546 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,546 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,546 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,547 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,548 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,548 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,548 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,548 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,548 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,548 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,548 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,549 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,549 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,549 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,549 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,549 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,549 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,549 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,549 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,550 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,550 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,550 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,550 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,550 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,550 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,550 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,551 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,551 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,551 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,551 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,553 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,553 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,553 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,554 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,554 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,554 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,554 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,554 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,554 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,554 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,554 WARN L322 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:54:03,555 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 22:54:03,592 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 22:54:03,596 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 22:54:03,597 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-18 22:54:03,607 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 112 places, 114 transitions, 233 flow [2022-01-18 22:54:03,663 INFO L129 PetriNetUnfolder]: 6/113 cut-off events. [2022-01-18 22:54:03,663 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-18 22:54:03,667 INFO L84 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 113 events. 6/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 112 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2022-01-18 22:54:03,667 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 114 transitions, 233 flow [2022-01-18 22:54:03,671 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 113 transitions, 229 flow [2022-01-18 22:54:03,691 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2022-01-18 22:54:03,691 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-18 22:54:03,691 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:54:03,692 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:54:03,692 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 22:54:03,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:54:03,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1022990879, now seen corresponding path program 1 times [2022-01-18 22:54:03,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:54:03,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618133279] [2022-01-18 22:54:03,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:54:03,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:54:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:54:03,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:54:03,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:54:03,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618133279] [2022-01-18 22:54:03,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618133279] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:54:03,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:54:03,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 22:54:03,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102171928] [2022-01-18 22:54:03,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:54:03,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 22:54:03,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:54:03,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 22:54:03,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 22:54:03,967 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 114 [2022-01-18 22:54:03,972 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 113 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 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) [2022-01-18 22:54:03,972 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:54:03,972 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 114 [2022-01-18 22:54:03,973 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:54:04,060 INFO L129 PetriNetUnfolder]: 19/317 cut-off events. [2022-01-18 22:54:04,060 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-01-18 22:54:04,064 INFO L84 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 317 events. 19/317 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1304 event pairs, 2 based on Foata normal form. 11/303 useless extension candidates. Maximal degree in co-relation 313. Up to 14 conditions per place. [2022-01-18 22:54:04,066 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 8 selfloop transitions, 3 changer transitions 0/113 dead transitions. [2022-01-18 22:54:04,066 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 113 transitions, 251 flow [2022-01-18 22:54:04,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 22:54:04,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-18 22:54:04,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 325 transitions. [2022-01-18 22:54:04,080 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9502923976608187 [2022-01-18 22:54:04,080 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 325 transitions. [2022-01-18 22:54:04,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 325 transitions. [2022-01-18 22:54:04,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:54:04,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 325 transitions. [2022-01-18 22:54:04,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:54:04,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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) [2022-01-18 22:54:04,103 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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) [2022-01-18 22:54:04,104 INFO L186 Difference]: Start difference. First operand has 111 places, 113 transitions, 229 flow. Second operand 3 states and 325 transitions. [2022-01-18 22:54:04,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 113 transitions, 251 flow [2022-01-18 22:54:04,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 113 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-18 22:54:04,109 INFO L242 Difference]: Finished difference. Result has 113 places, 111 transitions, 240 flow [2022-01-18 22:54:04,110 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=113, PETRI_TRANSITIONS=111} [2022-01-18 22:54:04,116 INFO L334 CegarLoopForPetriNet]: 111 programPoint places, 2 predicate places. [2022-01-18 22:54:04,116 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 111 transitions, 240 flow [2022-01-18 22:54:04,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 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) [2022-01-18 22:54:04,116 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:54:04,116 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:54:04,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 22:54:04,117 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 22:54:04,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:54:04,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1274572337, now seen corresponding path program 1 times [2022-01-18 22:54:04,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:54:04,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12699187] [2022-01-18 22:54:04,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:54:04,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:54:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:54:04,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:54:04,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:54:04,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12699187] [2022-01-18 22:54:04,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12699187] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:54:04,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:54:04,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 22:54:04,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82870918] [2022-01-18 22:54:04,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:54:04,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 22:54:04,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:54:04,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 22:54:04,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 22:54:04,253 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 114 [2022-01-18 22:54:04,253 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 111 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 100.6) internal successors, (503), 5 states have internal predecessors, (503), 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) [2022-01-18 22:54:04,253 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:54:04,253 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 114 [2022-01-18 22:54:04,253 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:54:04,386 INFO L129 PetriNetUnfolder]: 49/558 cut-off events. [2022-01-18 22:54:04,387 INFO L130 PetriNetUnfolder]: For 13/15 co-relation queries the response was YES. [2022-01-18 22:54:04,389 INFO L84 FinitePrefix]: Finished finitePrefix Result has 677 conditions, 558 events. 49/558 cut-off events. For 13/15 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3114 event pairs, 3 based on Foata normal form. 0/523 useless extension candidates. Maximal degree in co-relation 641. Up to 24 conditions per place. [2022-01-18 22:54:04,390 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 19 selfloop transitions, 7 changer transitions 3/127 dead transitions. [2022-01-18 22:54:04,390 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 127 transitions, 334 flow [2022-01-18 22:54:04,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 22:54:04,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-18 22:54:04,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 822 transitions. [2022-01-18 22:54:04,393 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9013157894736842 [2022-01-18 22:54:04,393 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 822 transitions. [2022-01-18 22:54:04,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 822 transitions. [2022-01-18 22:54:04,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:54:04,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 822 transitions. [2022-01-18 22:54:04,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 102.75) internal successors, (822), 8 states have internal predecessors, (822), 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) [2022-01-18 22:54:04,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 114.0) internal successors, (1026), 9 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) [2022-01-18 22:54:04,398 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 114.0) internal successors, (1026), 9 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) [2022-01-18 22:54:04,399 INFO L186 Difference]: Start difference. First operand has 113 places, 111 transitions, 240 flow. Second operand 8 states and 822 transitions. [2022-01-18 22:54:04,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 127 transitions, 334 flow [2022-01-18 22:54:04,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 127 transitions, 326 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-18 22:54:04,401 INFO L242 Difference]: Finished difference. Result has 122 places, 116 transitions, 277 flow [2022-01-18 22:54:04,402 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=277, PETRI_PLACES=122, PETRI_TRANSITIONS=116} [2022-01-18 22:54:04,402 INFO L334 CegarLoopForPetriNet]: 111 programPoint places, 11 predicate places. [2022-01-18 22:54:04,402 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 116 transitions, 277 flow [2022-01-18 22:54:04,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.6) internal successors, (503), 5 states have internal predecessors, (503), 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) [2022-01-18 22:54:04,403 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:54:04,403 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:54:04,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 22:54:04,403 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 22:54:04,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:54:04,404 INFO L85 PathProgramCache]: Analyzing trace with hash -2085581213, now seen corresponding path program 1 times [2022-01-18 22:54:04,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:54:04,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998169558] [2022-01-18 22:54:04,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:54:04,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:54:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:54:04,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:54:04,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:54:04,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998169558] [2022-01-18 22:54:04,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998169558] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:54:04,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:54:04,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 22:54:04,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886781768] [2022-01-18 22:54:04,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:54:04,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 22:54:04,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:54:04,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 22:54:04,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 22:54:04,452 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 114 [2022-01-18 22:54:04,452 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 116 transitions, 277 flow. Second operand has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 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) [2022-01-18 22:54:04,452 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:54:04,452 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 114 [2022-01-18 22:54:04,453 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:54:04,562 INFO L129 PetriNetUnfolder]: 130/988 cut-off events. [2022-01-18 22:54:04,562 INFO L130 PetriNetUnfolder]: For 35/48 co-relation queries the response was YES. [2022-01-18 22:54:04,564 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1333 conditions, 988 events. 130/988 cut-off events. For 35/48 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 7623 event pairs, 5 based on Foata normal form. 0/925 useless extension candidates. Maximal degree in co-relation 1293. Up to 131 conditions per place. [2022-01-18 22:54:04,565 INFO L132 encePairwiseOnDemand]: 107/114 looper letters, 10 selfloop transitions, 2 changer transitions 56/137 dead transitions. [2022-01-18 22:54:04,565 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 137 transitions, 397 flow [2022-01-18 22:54:04,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 22:54:04,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-18 22:54:04,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 820 transitions. [2022-01-18 22:54:04,567 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8991228070175439 [2022-01-18 22:54:04,567 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 820 transitions. [2022-01-18 22:54:04,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 820 transitions. [2022-01-18 22:54:04,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:54:04,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 820 transitions. [2022-01-18 22:54:04,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 102.5) internal successors, (820), 8 states have internal predecessors, (820), 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) [2022-01-18 22:54:04,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 114.0) internal successors, (1026), 9 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) [2022-01-18 22:54:04,570 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 114.0) internal successors, (1026), 9 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) [2022-01-18 22:54:04,571 INFO L186 Difference]: Start difference. First operand has 122 places, 116 transitions, 277 flow. Second operand 8 states and 820 transitions. [2022-01-18 22:54:04,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 137 transitions, 397 flow [2022-01-18 22:54:04,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 137 transitions, 397 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-18 22:54:04,573 INFO L242 Difference]: Finished difference. Result has 133 places, 80 transitions, 204 flow [2022-01-18 22:54:04,574 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=204, PETRI_PLACES=133, PETRI_TRANSITIONS=80} [2022-01-18 22:54:04,574 INFO L334 CegarLoopForPetriNet]: 111 programPoint places, 22 predicate places. [2022-01-18 22:54:04,574 INFO L470 AbstractCegarLoop]: Abstraction has has 133 places, 80 transitions, 204 flow [2022-01-18 22:54:04,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 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) [2022-01-18 22:54:04,575 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:54:04,575 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:54:04,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 22:54:04,575 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 22:54:04,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:54:04,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1537175088, now seen corresponding path program 1 times [2022-01-18 22:54:04,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:54:04,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265699698] [2022-01-18 22:54:04,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:54:04,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:54:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:54:04,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:54:04,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:54:04,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265699698] [2022-01-18 22:54:04,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265699698] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:54:04,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:54:04,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 22:54:04,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131194336] [2022-01-18 22:54:04,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:54:04,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 22:54:04,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:54:04,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 22:54:04,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-18 22:54:04,634 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 114 [2022-01-18 22:54:04,634 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 80 transitions, 204 flow. Second operand has 8 states, 8 states have (on average 95.875) internal successors, (767), 8 states have internal predecessors, (767), 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) [2022-01-18 22:54:04,634 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:54:04,634 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 114 [2022-01-18 22:54:04,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:54:04,709 INFO L129 PetriNetUnfolder]: 11/206 cut-off events. [2022-01-18 22:54:04,709 INFO L130 PetriNetUnfolder]: For 24/34 co-relation queries the response was YES. [2022-01-18 22:54:04,710 INFO L84 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 206 events. 11/206 cut-off events. For 24/34 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 910 event pairs, 7 based on Foata normal form. 1/201 useless extension candidates. Maximal degree in co-relation 305. Up to 25 conditions per place. [2022-01-18 22:54:04,710 INFO L132 encePairwiseOnDemand]: 106/114 looper letters, 13 selfloop transitions, 2 changer transitions 14/92 dead transitions. [2022-01-18 22:54:04,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 92 transitions, 288 flow [2022-01-18 22:54:04,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 22:54:04,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-18 22:54:04,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 875 transitions. [2022-01-18 22:54:04,713 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8528265107212476 [2022-01-18 22:54:04,713 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 875 transitions. [2022-01-18 22:54:04,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 875 transitions. [2022-01-18 22:54:04,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:54:04,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 875 transitions. [2022-01-18 22:54:04,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 97.22222222222223) internal successors, (875), 9 states have internal predecessors, (875), 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) [2022-01-18 22:54:04,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 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) [2022-01-18 22:54:04,717 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 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) [2022-01-18 22:54:04,717 INFO L186 Difference]: Start difference. First operand has 133 places, 80 transitions, 204 flow. Second operand 9 states and 875 transitions. [2022-01-18 22:54:04,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 92 transitions, 288 flow [2022-01-18 22:54:04,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 92 transitions, 264 flow, removed 7 selfloop flow, removed 11 redundant places. [2022-01-18 22:54:04,719 INFO L242 Difference]: Finished difference. Result has 98 places, 78 transitions, 192 flow [2022-01-18 22:54:04,719 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=192, PETRI_PLACES=98, PETRI_TRANSITIONS=78} [2022-01-18 22:54:04,720 INFO L334 CegarLoopForPetriNet]: 111 programPoint places, -13 predicate places. [2022-01-18 22:54:04,720 INFO L470 AbstractCegarLoop]: Abstraction has has 98 places, 78 transitions, 192 flow [2022-01-18 22:54:04,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 95.875) internal successors, (767), 8 states have internal predecessors, (767), 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) [2022-01-18 22:54:04,720 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:54:04,721 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:54:04,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 22:54:04,721 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 22:54:04,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:54:04,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1734247432, now seen corresponding path program 1 times [2022-01-18 22:54:04,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:54:04,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997130064] [2022-01-18 22:54:04,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:54:04,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:54:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:54:04,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:54:04,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:54:04,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997130064] [2022-01-18 22:54:04,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997130064] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:54:04,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:54:04,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 22:54:04,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976968225] [2022-01-18 22:54:04,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:54:04,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 22:54:04,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:54:04,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 22:54:04,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 22:54:04,766 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 114 [2022-01-18 22:54:04,766 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 78 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 98.2) internal successors, (491), 5 states have internal predecessors, (491), 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) [2022-01-18 22:54:04,766 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:54:04,766 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 114 [2022-01-18 22:54:04,767 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:54:04,824 INFO L129 PetriNetUnfolder]: 8/103 cut-off events. [2022-01-18 22:54:04,824 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-01-18 22:54:04,824 INFO L84 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 103 events. 8/103 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 218 event pairs, 3 based on Foata normal form. 2/103 useless extension candidates. Maximal degree in co-relation 150. Up to 19 conditions per place. [2022-01-18 22:54:04,824 INFO L132 encePairwiseOnDemand]: 109/114 looper letters, 12 selfloop transitions, 0 changer transitions 9/86 dead transitions. [2022-01-18 22:54:04,825 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 86 transitions, 262 flow [2022-01-18 22:54:04,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 22:54:04,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-18 22:54:04,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 598 transitions. [2022-01-18 22:54:04,826 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8742690058479532 [2022-01-18 22:54:04,826 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 598 transitions. [2022-01-18 22:54:04,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 598 transitions. [2022-01-18 22:54:04,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:54:04,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 598 transitions. [2022-01-18 22:54:04,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.66666666666667) internal successors, (598), 6 states have internal predecessors, (598), 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) [2022-01-18 22:54:04,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 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) [2022-01-18 22:54:04,830 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 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) [2022-01-18 22:54:04,830 INFO L186 Difference]: Start difference. First operand has 98 places, 78 transitions, 192 flow. Second operand 6 states and 598 transitions. [2022-01-18 22:54:04,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 86 transitions, 262 flow [2022-01-18 22:54:04,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 86 transitions, 233 flow, removed 6 selfloop flow, removed 9 redundant places. [2022-01-18 22:54:04,832 INFO L242 Difference]: Finished difference. Result has 92 places, 77 transitions, 177 flow [2022-01-18 22:54:04,832 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=177, PETRI_PLACES=92, PETRI_TRANSITIONS=77} [2022-01-18 22:54:04,834 INFO L334 CegarLoopForPetriNet]: 111 programPoint places, -19 predicate places. [2022-01-18 22:54:04,834 INFO L470 AbstractCegarLoop]: Abstraction has has 92 places, 77 transitions, 177 flow [2022-01-18 22:54:04,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 98.2) internal successors, (491), 5 states have internal predecessors, (491), 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) [2022-01-18 22:54:04,835 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:54:04,835 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:54:04,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 22:54:04,835 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 22:54:04,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:54:04,836 INFO L85 PathProgramCache]: Analyzing trace with hash 2127319924, now seen corresponding path program 2 times [2022-01-18 22:54:04,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:54:04,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472075439] [2022-01-18 22:54:04,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:54:04,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:54:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:54:04,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:54:04,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:54:04,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472075439] [2022-01-18 22:54:04,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472075439] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:54:04,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:54:04,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 22:54:04,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623564918] [2022-01-18 22:54:04,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:54:04,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 22:54:04,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:54:04,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 22:54:04,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 22:54:04,887 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 114 [2022-01-18 22:54:04,887 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 77 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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) [2022-01-18 22:54:04,887 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:54:04,887 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 114 [2022-01-18 22:54:04,887 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:54:04,895 INFO L129 PetriNetUnfolder]: 1/83 cut-off events. [2022-01-18 22:54:04,896 INFO L130 PetriNetUnfolder]: For 6/9 co-relation queries the response was YES. [2022-01-18 22:54:04,896 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 83 events. 1/83 cut-off events. For 6/9 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 1 based on Foata normal form. 3/85 useless extension candidates. Maximal degree in co-relation 100. Up to 5 conditions per place. [2022-01-18 22:54:04,896 INFO L132 encePairwiseOnDemand]: 112/114 looper letters, 0 selfloop transitions, 0 changer transitions 63/63 dead transitions. [2022-01-18 22:54:04,896 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 63 transitions, 148 flow [2022-01-18 22:54:04,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 22:54:04,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-18 22:54:04,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 316 transitions. [2022-01-18 22:54:04,897 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9239766081871345 [2022-01-18 22:54:04,897 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 316 transitions. [2022-01-18 22:54:04,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 316 transitions. [2022-01-18 22:54:04,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:54:04,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 316 transitions. [2022-01-18 22:54:04,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:54:04,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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) [2022-01-18 22:54:04,899 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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) [2022-01-18 22:54:04,899 INFO L186 Difference]: Start difference. First operand has 92 places, 77 transitions, 177 flow. Second operand 3 states and 316 transitions. [2022-01-18 22:54:04,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 63 transitions, 148 flow [2022-01-18 22:54:04,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 63 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-18 22:54:04,900 INFO L242 Difference]: Finished difference. Result has 74 places, 0 transitions, 0 flow [2022-01-18 22:54:04,900 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=74, PETRI_TRANSITIONS=0} [2022-01-18 22:54:04,902 INFO L334 CegarLoopForPetriNet]: 111 programPoint places, -37 predicate places. [2022-01-18 22:54:04,902 INFO L470 AbstractCegarLoop]: Abstraction has has 74 places, 0 transitions, 0 flow [2022-01-18 22:54:04,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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) [2022-01-18 22:54:04,904 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-01-18 22:54:04,905 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2022-01-18 22:54:04,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 22:54:04,909 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2022-01-18 22:54:04,911 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 22:54:04,911 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 22:54:04,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 10:54:04 BasicIcfg [2022-01-18 22:54:04,917 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 22:54:04,918 INFO L158 Benchmark]: Toolchain (without parser) took 2138.42ms. Allocated memory was 417.3MB in the beginning and 557.8MB in the end (delta: 140.5MB). Free memory was 362.9MB in the beginning and 303.8MB in the end (delta: 59.2MB). Peak memory consumption was 198.8MB. Max. memory is 16.0GB. [2022-01-18 22:54:04,918 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 417.3MB. Free memory is still 380.5MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 22:54:04,920 INFO L158 Benchmark]: CACSL2BoogieTranslator took 340.48ms. Allocated memory was 417.3MB in the beginning and 557.8MB in the end (delta: 140.5MB). Free memory was 362.7MB in the beginning and 522.9MB in the end (delta: -160.2MB). Peak memory consumption was 9.0MB. Max. memory is 16.0GB. [2022-01-18 22:54:04,923 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.22ms. Allocated memory is still 557.8MB. Free memory was 522.9MB in the beginning and 520.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 22:54:04,924 INFO L158 Benchmark]: Boogie Preprocessor took 25.39ms. Allocated memory is still 557.8MB. Free memory was 520.8MB in the beginning and 518.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 22:54:04,925 INFO L158 Benchmark]: RCFGBuilder took 304.52ms. Allocated memory is still 557.8MB. Free memory was 518.7MB in the beginning and 501.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2022-01-18 22:54:04,925 INFO L158 Benchmark]: TraceAbstraction took 1413.53ms. Allocated memory is still 557.8MB. Free memory was 501.9MB in the beginning and 303.8MB in the end (delta: 198.2MB). Peak memory consumption was 199.2MB. Max. memory is 16.0GB. [2022-01-18 22:54:04,926 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 417.3MB. Free memory is still 380.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 340.48ms. Allocated memory was 417.3MB in the beginning and 557.8MB in the end (delta: 140.5MB). Free memory was 362.7MB in the beginning and 522.9MB in the end (delta: -160.2MB). Peak memory consumption was 9.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 50.22ms. Allocated memory is still 557.8MB. Free memory was 522.9MB in the beginning and 520.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 25.39ms. Allocated memory is still 557.8MB. Free memory was 520.8MB in the beginning and 518.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 304.52ms. Allocated memory is still 557.8MB. Free memory was 518.7MB in the beginning and 501.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 1413.53ms. Allocated memory is still 557.8MB. Free memory was 501.9MB in the beginning and 303.8MB in the end (delta: 198.2MB). Peak memory consumption was 199.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 690]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 139 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 69 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 69 mSDsluCounter, 163 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 161 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 198 IncrementalHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 46 mSDtfsCounter, 198 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=277occurred in iteration=2, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 393 NumberOfCodeBlocks, 393 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 387 ConstructedInterpolants, 0 QuantifiedInterpolants, 750 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-18 22:54:04,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...