./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-time-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-time-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 72bbcf79bf9ab9dc66dc1f84247eb131a6de5c94da8e4a071481d48ca23ad8fa --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:27:27,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:27:27,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:27:27,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:27:27,834 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:27:27,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:27:27,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:27:27,839 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:27:27,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:27:27,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:27:27,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:27:27,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:27:27,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:27:27,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:27:27,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:27:27,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:27:27,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:27:27,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:27:27,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:27:27,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:27:27,863 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:27:27,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:27:27,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:27:27,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:27:27,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:27:27,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:27:27,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:27:27,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:27:27,870 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:27:27,871 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:27:27,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:27:27,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:27:27,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:27:27,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:27:27,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:27:27,874 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:27:27,874 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:27:27,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:27:27,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:27:27,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:27:27,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:27:27,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:27:27,878 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:27:27,908 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:27:27,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:27:27,909 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:27:27,909 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:27:27,909 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:27:27,909 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:27:27,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:27:27,910 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:27:27,910 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:27:27,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:27:27,911 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:27:27,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:27:27,911 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:27:27,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:27:27,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:27:27,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:27:27,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:27:27,912 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:27:27,912 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:27:27,913 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:27:27,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:27:27,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:27:27,914 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:27:27,914 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:27:27,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:27:27,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:27:27,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:27:27,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:27:27,915 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:27:27,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:27:27,915 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:27:27,915 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:27:27,916 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:27:27,916 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72bbcf79bf9ab9dc66dc1f84247eb131a6de5c94da8e4a071481d48ca23ad8fa [2022-07-19 21:27:28,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:27:28,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:27:28,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:27:28,131 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:27:28,131 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:27:28,132 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-time-symm.wvr.c [2022-07-19 21:27:28,175 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dac5d275c/5ca842afa0cb4fcf98677fccc442d154/FLAG32a428dbe [2022-07-19 21:27:28,550 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:27:28,551 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-time-symm.wvr.c [2022-07-19 21:27:28,557 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dac5d275c/5ca842afa0cb4fcf98677fccc442d154/FLAG32a428dbe [2022-07-19 21:27:28,570 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dac5d275c/5ca842afa0cb4fcf98677fccc442d154 [2022-07-19 21:27:28,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:27:28,574 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:27:28,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:27:28,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:27:28,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:27:28,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:27:28" (1/1) ... [2022-07-19 21:27:28,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35b5a8e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:28, skipping insertion in model container [2022-07-19 21:27:28,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:27:28" (1/1) ... [2022-07-19 21:27:28,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:27:28,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:27:28,725 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-time-symm.wvr.c[2494,2507] [2022-07-19 21:27:28,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:27:28,734 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:27:28,750 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-time-symm.wvr.c[2494,2507] [2022-07-19 21:27:28,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:27:28,765 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:27:28,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:28 WrapperNode [2022-07-19 21:27:28,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:27:28,767 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:27:28,767 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:27:28,767 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:27:28,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:28" (1/1) ... [2022-07-19 21:27:28,782 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:28" (1/1) ... [2022-07-19 21:27:28,798 INFO L137 Inliner]: procedures = 22, calls = 29, calls flagged for inlining = 9, calls inlined = 15, statements flattened = 164 [2022-07-19 21:27:28,798 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:27:28,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:27:28,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:27:28,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:27:28,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:28" (1/1) ... [2022-07-19 21:27:28,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:28" (1/1) ... [2022-07-19 21:27:28,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:28" (1/1) ... [2022-07-19 21:27:28,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:28" (1/1) ... [2022-07-19 21:27:28,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:28" (1/1) ... [2022-07-19 21:27:28,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:28" (1/1) ... [2022-07-19 21:27:28,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:28" (1/1) ... [2022-07-19 21:27:28,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:27:28,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:27:28,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:27:28,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:27:28,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:28" (1/1) ... [2022-07-19 21:27:28,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:27:28,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:27:28,847 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) [2022-07-19 21:27:28,855 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 [2022-07-19 21:27:28,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:27:28,872 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:27:28,872 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:27:28,872 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:27:28,872 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:27:28,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:27:28,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:27:28,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:27:28,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-19 21:27:28,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-19 21:27:28,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:27:28,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:27:28,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:27:28,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:27:28,874 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:27:28,987 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:27:28,988 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:27:29,283 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:27:29,454 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:27:29,454 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:27:29,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:27:29 BoogieIcfgContainer [2022-07-19 21:27:29,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:27:29,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:27:29,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:27:29,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:27:29,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:27:28" (1/3) ... [2022-07-19 21:27:29,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@518e0925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:27:29, skipping insertion in model container [2022-07-19 21:27:29,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:28" (2/3) ... [2022-07-19 21:27:29,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@518e0925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:27:29, skipping insertion in model container [2022-07-19 21:27:29,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:27:29" (3/3) ... [2022-07-19 21:27:29,465 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-time-symm.wvr.c [2022-07-19 21:27:29,470 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:27:29,477 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:27:29,477 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:27:29,477 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:27:29,517 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-19 21:27:29,559 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 104 places, 102 transitions, 220 flow [2022-07-19 21:27:29,603 INFO L129 PetriNetUnfolder]: 5/100 cut-off events. [2022-07-19 21:27:29,603 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:27:29,605 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 100 events. 5/100 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2022-07-19 21:27:29,605 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 102 transitions, 220 flow [2022-07-19 21:27:29,609 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 91 transitions, 194 flow [2022-07-19 21:27:29,621 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:27:29,627 INFO L357 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=true, 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@37cc9328, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@188ce84b [2022-07-19 21:27:29,628 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-19 21:27:29,653 INFO L129 PetriNetUnfolder]: 5/90 cut-off events. [2022-07-19 21:27:29,653 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:27:29,654 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:29,654 INFO L200 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, 1, 1, 1] [2022-07-19 21:27:29,655 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:29,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:29,659 INFO L85 PathProgramCache]: Analyzing trace with hash -408130587, now seen corresponding path program 1 times [2022-07-19 21:27:29,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:29,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642746314] [2022-07-19 21:27:29,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:29,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:30,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:30,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:30,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642746314] [2022-07-19 21:27:30,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642746314] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:30,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:30,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:30,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668902391] [2022-07-19 21:27:30,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:30,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:30,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:30,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:30,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:30,061 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2022-07-19 21:27:30,067 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 91 transitions, 194 flow. Second operand has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 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) [2022-07-19 21:27:30,067 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:30,067 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2022-07-19 21:27:30,068 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:30,211 INFO L129 PetriNetUnfolder]: 8/165 cut-off events. [2022-07-19 21:27:30,211 INFO L130 PetriNetUnfolder]: For 21/24 co-relation queries the response was YES. [2022-07-19 21:27:30,212 INFO L84 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 165 events. 8/165 cut-off events. For 21/24 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 356 event pairs, 0 based on Foata normal form. 5/158 useless extension candidates. Maximal degree in co-relation 61. Up to 16 conditions per place. [2022-07-19 21:27:30,214 INFO L132 encePairwiseOnDemand]: 95/102 looper letters, 35 selfloop transitions, 5 changer transitions 1/104 dead transitions. [2022-07-19 21:27:30,214 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 104 transitions, 309 flow [2022-07-19 21:27:30,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:27:30,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:27:30,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 490 transitions. [2022-07-19 21:27:30,229 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8006535947712419 [2022-07-19 21:27:30,230 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 490 transitions. [2022-07-19 21:27:30,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 490 transitions. [2022-07-19 21:27:30,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:30,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 490 transitions. [2022-07-19 21:27:30,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 81.66666666666667) internal successors, (490), 6 states have internal predecessors, (490), 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) [2022-07-19 21:27:30,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 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) [2022-07-19 21:27:30,244 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 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) [2022-07-19 21:27:30,246 INFO L186 Difference]: Start difference. First operand has 93 places, 91 transitions, 194 flow. Second operand 6 states and 490 transitions. [2022-07-19 21:27:30,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 104 transitions, 309 flow [2022-07-19 21:27:30,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 104 transitions, 295 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-19 21:27:30,255 INFO L242 Difference]: Finished difference. Result has 97 places, 93 transitions, 218 flow [2022-07-19 21:27:30,257 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=97, PETRI_TRANSITIONS=93} [2022-07-19 21:27:30,261 INFO L279 CegarLoopForPetriNet]: 93 programPoint places, 4 predicate places. [2022-07-19 21:27:30,261 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 93 transitions, 218 flow [2022-07-19 21:27:30,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 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) [2022-07-19 21:27:30,262 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:30,262 INFO L200 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, 1, 1, 1] [2022-07-19 21:27:30,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:27:30,263 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:30,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:30,263 INFO L85 PathProgramCache]: Analyzing trace with hash 2065107161, now seen corresponding path program 2 times [2022-07-19 21:27:30,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:30,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687727538] [2022-07-19 21:27:30,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:30,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:30,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:30,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:30,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687727538] [2022-07-19 21:27:30,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687727538] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:30,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:30,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:30,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443644816] [2022-07-19 21:27:30,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:30,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:30,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:30,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:30,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:30,377 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2022-07-19 21:27:30,377 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 93 transitions, 218 flow. Second operand has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 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) [2022-07-19 21:27:30,377 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:30,378 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2022-07-19 21:27:30,378 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:30,531 INFO L129 PetriNetUnfolder]: 7/176 cut-off events. [2022-07-19 21:27:30,531 INFO L130 PetriNetUnfolder]: For 22/25 co-relation queries the response was YES. [2022-07-19 21:27:30,532 INFO L84 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 176 events. 7/176 cut-off events. For 22/25 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 411 event pairs, 1 based on Foata normal form. 3/176 useless extension candidates. Maximal degree in co-relation 167. Up to 18 conditions per place. [2022-07-19 21:27:30,533 INFO L132 encePairwiseOnDemand]: 93/102 looper letters, 28 selfloop transitions, 10 changer transitions 0/101 dead transitions. [2022-07-19 21:27:30,533 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 101 transitions, 319 flow [2022-07-19 21:27:30,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:27:30,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:27:30,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 556 transitions. [2022-07-19 21:27:30,535 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7787114845938375 [2022-07-19 21:27:30,536 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 556 transitions. [2022-07-19 21:27:30,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 556 transitions. [2022-07-19 21:27:30,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:30,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 556 transitions. [2022-07-19 21:27:30,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 79.42857142857143) internal successors, (556), 7 states have internal predecessors, (556), 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) [2022-07-19 21:27:30,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 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) [2022-07-19 21:27:30,539 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 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) [2022-07-19 21:27:30,539 INFO L186 Difference]: Start difference. First operand has 97 places, 93 transitions, 218 flow. Second operand 7 states and 556 transitions. [2022-07-19 21:27:30,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 101 transitions, 319 flow [2022-07-19 21:27:30,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 101 transitions, 317 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:27:30,543 INFO L242 Difference]: Finished difference. Result has 104 places, 96 transitions, 271 flow [2022-07-19 21:27:30,544 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=271, PETRI_PLACES=104, PETRI_TRANSITIONS=96} [2022-07-19 21:27:30,544 INFO L279 CegarLoopForPetriNet]: 93 programPoint places, 11 predicate places. [2022-07-19 21:27:30,545 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 96 transitions, 271 flow [2022-07-19 21:27:30,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 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) [2022-07-19 21:27:30,545 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:30,545 INFO L200 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, 1, 1, 1, 1, 1] [2022-07-19 21:27:30,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:27:30,546 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:30,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:30,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1162863185, now seen corresponding path program 1 times [2022-07-19 21:27:30,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:30,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356074653] [2022-07-19 21:27:30,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:30,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:30,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:30,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:30,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:30,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356074653] [2022-07-19 21:27:30,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356074653] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:30,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:30,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:30,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283422564] [2022-07-19 21:27:30,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:30,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:30,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:30,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:30,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:30,683 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2022-07-19 21:27:30,684 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 96 transitions, 271 flow. Second operand has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 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) [2022-07-19 21:27:30,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:30,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2022-07-19 21:27:30,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:30,782 INFO L129 PetriNetUnfolder]: 5/201 cut-off events. [2022-07-19 21:27:30,782 INFO L130 PetriNetUnfolder]: For 64/64 co-relation queries the response was YES. [2022-07-19 21:27:30,782 INFO L84 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 201 events. 5/201 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 580 event pairs, 0 based on Foata normal form. 1/200 useless extension candidates. Maximal degree in co-relation 188. Up to 12 conditions per place. [2022-07-19 21:27:30,783 INFO L132 encePairwiseOnDemand]: 94/102 looper letters, 33 selfloop transitions, 9 changer transitions 0/105 dead transitions. [2022-07-19 21:27:30,783 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 105 transitions, 384 flow [2022-07-19 21:27:30,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:27:30,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:27:30,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 558 transitions. [2022-07-19 21:27:30,785 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7815126050420168 [2022-07-19 21:27:30,785 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 558 transitions. [2022-07-19 21:27:30,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 558 transitions. [2022-07-19 21:27:30,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:30,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 558 transitions. [2022-07-19 21:27:30,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 79.71428571428571) internal successors, (558), 7 states have internal predecessors, (558), 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) [2022-07-19 21:27:30,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 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) [2022-07-19 21:27:30,789 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 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) [2022-07-19 21:27:30,789 INFO L186 Difference]: Start difference. First operand has 104 places, 96 transitions, 271 flow. Second operand 7 states and 558 transitions. [2022-07-19 21:27:30,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 105 transitions, 384 flow [2022-07-19 21:27:30,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 105 transitions, 378 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:27:30,795 INFO L242 Difference]: Finished difference. Result has 110 places, 99 transitions, 302 flow [2022-07-19 21:27:30,795 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=302, PETRI_PLACES=110, PETRI_TRANSITIONS=99} [2022-07-19 21:27:30,797 INFO L279 CegarLoopForPetriNet]: 93 programPoint places, 17 predicate places. [2022-07-19 21:27:30,797 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 99 transitions, 302 flow [2022-07-19 21:27:30,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 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) [2022-07-19 21:27:30,797 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:30,798 INFO L200 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, 1, 1, 1, 1, 1] [2022-07-19 21:27:30,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:27:30,798 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:30,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:30,799 INFO L85 PathProgramCache]: Analyzing trace with hash -291636111, now seen corresponding path program 1 times [2022-07-19 21:27:30,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:30,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308910508] [2022-07-19 21:27:30,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:30,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:30,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:30,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:30,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308910508] [2022-07-19 21:27:30,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308910508] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:30,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:30,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:27:30,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739682413] [2022-07-19 21:27:30,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:30,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:27:30,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:30,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:27:30,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:27:30,918 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 102 [2022-07-19 21:27:30,918 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 99 transitions, 302 flow. Second operand has 7 states, 7 states have (on average 81.42857142857143) internal successors, (570), 7 states have internal predecessors, (570), 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) [2022-07-19 21:27:30,919 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:30,919 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 102 [2022-07-19 21:27:30,919 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:31,007 INFO L129 PetriNetUnfolder]: 7/245 cut-off events. [2022-07-19 21:27:31,008 INFO L130 PetriNetUnfolder]: For 81/84 co-relation queries the response was YES. [2022-07-19 21:27:31,008 INFO L84 FinitePrefix]: Finished finitePrefix Result has 449 conditions, 245 events. 7/245 cut-off events. For 81/84 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 964 event pairs, 2 based on Foata normal form. 2/245 useless extension candidates. Maximal degree in co-relation 250. Up to 74 conditions per place. [2022-07-19 21:27:31,009 INFO L132 encePairwiseOnDemand]: 94/102 looper letters, 26 selfloop transitions, 4 changer transitions 4/111 dead transitions. [2022-07-19 21:27:31,009 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 111 transitions, 394 flow [2022-07-19 21:27:31,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:27:31,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:27:31,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 586 transitions. [2022-07-19 21:27:31,011 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8207282913165266 [2022-07-19 21:27:31,011 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 586 transitions. [2022-07-19 21:27:31,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 586 transitions. [2022-07-19 21:27:31,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:31,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 586 transitions. [2022-07-19 21:27:31,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.71428571428571) internal successors, (586), 7 states have internal predecessors, (586), 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) [2022-07-19 21:27:31,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 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) [2022-07-19 21:27:31,014 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 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) [2022-07-19 21:27:31,014 INFO L186 Difference]: Start difference. First operand has 110 places, 99 transitions, 302 flow. Second operand 7 states and 586 transitions. [2022-07-19 21:27:31,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 111 transitions, 394 flow [2022-07-19 21:27:31,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 111 transitions, 388 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:27:31,018 INFO L242 Difference]: Finished difference. Result has 119 places, 102 transitions, 330 flow [2022-07-19 21:27:31,018 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=330, PETRI_PLACES=119, PETRI_TRANSITIONS=102} [2022-07-19 21:27:31,018 INFO L279 CegarLoopForPetriNet]: 93 programPoint places, 26 predicate places. [2022-07-19 21:27:31,019 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 102 transitions, 330 flow [2022-07-19 21:27:31,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.42857142857143) internal successors, (570), 7 states have internal predecessors, (570), 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) [2022-07-19 21:27:31,019 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:31,019 INFO L200 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, 1, 1, 1, 1, 1] [2022-07-19 21:27:31,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:27:31,020 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:31,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:31,020 INFO L85 PathProgramCache]: Analyzing trace with hash 795161343, now seen corresponding path program 1 times [2022-07-19 21:27:31,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:31,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613564739] [2022-07-19 21:27:31,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:31,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:31,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:31,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:31,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613564739] [2022-07-19 21:27:31,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613564739] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:31,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:31,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:27:31,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366262226] [2022-07-19 21:27:31,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:31,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:27:31,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:31,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:27:31,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:27:31,104 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 102 [2022-07-19 21:27:31,105 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 102 transitions, 330 flow. Second operand has 7 states, 7 states have (on average 81.42857142857143) internal successors, (570), 7 states have internal predecessors, (570), 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) [2022-07-19 21:27:31,105 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:31,105 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 102 [2022-07-19 21:27:31,105 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:31,181 INFO L129 PetriNetUnfolder]: 6/234 cut-off events. [2022-07-19 21:27:31,182 INFO L130 PetriNetUnfolder]: For 109/112 co-relation queries the response was YES. [2022-07-19 21:27:31,182 INFO L84 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 234 events. 6/234 cut-off events. For 109/112 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 855 event pairs, 2 based on Foata normal form. 2/234 useless extension candidates. Maximal degree in co-relation 371. Up to 92 conditions per place. [2022-07-19 21:27:31,183 INFO L132 encePairwiseOnDemand]: 96/102 looper letters, 23 selfloop transitions, 0 changer transitions 10/107 dead transitions. [2022-07-19 21:27:31,183 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 107 transitions, 402 flow [2022-07-19 21:27:31,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:27:31,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:27:31,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 579 transitions. [2022-07-19 21:27:31,185 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8109243697478992 [2022-07-19 21:27:31,185 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 579 transitions. [2022-07-19 21:27:31,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 579 transitions. [2022-07-19 21:27:31,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:31,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 579 transitions. [2022-07-19 21:27:31,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 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) [2022-07-19 21:27:31,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 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) [2022-07-19 21:27:31,187 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 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) [2022-07-19 21:27:31,188 INFO L186 Difference]: Start difference. First operand has 119 places, 102 transitions, 330 flow. Second operand 7 states and 579 transitions. [2022-07-19 21:27:31,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 107 transitions, 402 flow [2022-07-19 21:27:31,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 107 transitions, 390 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-07-19 21:27:31,191 INFO L242 Difference]: Finished difference. Result has 123 places, 97 transitions, 298 flow [2022-07-19 21:27:31,191 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=298, PETRI_PLACES=123, PETRI_TRANSITIONS=97} [2022-07-19 21:27:31,192 INFO L279 CegarLoopForPetriNet]: 93 programPoint places, 30 predicate places. [2022-07-19 21:27:31,192 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 97 transitions, 298 flow [2022-07-19 21:27:31,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.42857142857143) internal successors, (570), 7 states have internal predecessors, (570), 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) [2022-07-19 21:27:31,193 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:31,193 INFO L200 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, 1, 1, 1, 1, 1] [2022-07-19 21:27:31,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:27:31,193 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:31,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:31,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1527220719, now seen corresponding path program 2 times [2022-07-19 21:27:31,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:31,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628033541] [2022-07-19 21:27:31,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:31,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:31,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:31,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:31,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628033541] [2022-07-19 21:27:31,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628033541] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:31,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:31,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:31,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666042550] [2022-07-19 21:27:31,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:31,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:31,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:31,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:31,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:31,250 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2022-07-19 21:27:31,250 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 97 transitions, 298 flow. Second operand has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 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) [2022-07-19 21:27:31,250 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:31,250 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2022-07-19 21:27:31,251 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:31,364 INFO L129 PetriNetUnfolder]: 6/201 cut-off events. [2022-07-19 21:27:31,365 INFO L130 PetriNetUnfolder]: For 84/87 co-relation queries the response was YES. [2022-07-19 21:27:31,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 393 conditions, 201 events. 6/201 cut-off events. For 84/87 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 588 event pairs, 1 based on Foata normal form. 2/202 useless extension candidates. Maximal degree in co-relation 375. Up to 13 conditions per place. [2022-07-19 21:27:31,366 INFO L132 encePairwiseOnDemand]: 95/102 looper letters, 28 selfloop transitions, 9 changer transitions 2/103 dead transitions. [2022-07-19 21:27:31,366 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 103 transitions, 401 flow [2022-07-19 21:27:31,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:27:31,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:27:31,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 556 transitions. [2022-07-19 21:27:31,367 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7787114845938375 [2022-07-19 21:27:31,368 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 556 transitions. [2022-07-19 21:27:31,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 556 transitions. [2022-07-19 21:27:31,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:31,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 556 transitions. [2022-07-19 21:27:31,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 79.42857142857143) internal successors, (556), 7 states have internal predecessors, (556), 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) [2022-07-19 21:27:31,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 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) [2022-07-19 21:27:31,370 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 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) [2022-07-19 21:27:31,370 INFO L186 Difference]: Start difference. First operand has 123 places, 97 transitions, 298 flow. Second operand 7 states and 556 transitions. [2022-07-19 21:27:31,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 103 transitions, 401 flow [2022-07-19 21:27:31,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 103 transitions, 362 flow, removed 13 selfloop flow, removed 10 redundant places. [2022-07-19 21:27:31,373 INFO L242 Difference]: Finished difference. Result has 113 places, 96 transitions, 286 flow [2022-07-19 21:27:31,374 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=286, PETRI_PLACES=113, PETRI_TRANSITIONS=96} [2022-07-19 21:27:31,374 INFO L279 CegarLoopForPetriNet]: 93 programPoint places, 20 predicate places. [2022-07-19 21:27:31,374 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 96 transitions, 286 flow [2022-07-19 21:27:31,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 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) [2022-07-19 21:27:31,375 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:31,375 INFO L200 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:31,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:27:31,375 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:31,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:31,376 INFO L85 PathProgramCache]: Analyzing trace with hash 675637189, now seen corresponding path program 1 times [2022-07-19 21:27:31,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:31,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868872995] [2022-07-19 21:27:31,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:31,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:31,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:31,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:31,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868872995] [2022-07-19 21:27:31,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868872995] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:31,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:31,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:31,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129032231] [2022-07-19 21:27:31,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:31,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:31,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:31,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:31,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:31,427 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2022-07-19 21:27:31,427 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 96 transitions, 286 flow. Second operand has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 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) [2022-07-19 21:27:31,427 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:31,428 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2022-07-19 21:27:31,428 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:31,505 INFO L129 PetriNetUnfolder]: 4/177 cut-off events. [2022-07-19 21:27:31,506 INFO L130 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2022-07-19 21:27:31,507 INFO L84 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 177 events. 4/177 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 435 event pairs, 0 based on Foata normal form. 1/178 useless extension candidates. Maximal degree in co-relation 290. Up to 16 conditions per place. [2022-07-19 21:27:31,508 INFO L132 encePairwiseOnDemand]: 98/102 looper letters, 32 selfloop transitions, 3 changer transitions 1/100 dead transitions. [2022-07-19 21:27:31,508 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 100 transitions, 363 flow [2022-07-19 21:27:31,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:27:31,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:27:31,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 405 transitions. [2022-07-19 21:27:31,509 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7941176470588235 [2022-07-19 21:27:31,509 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 405 transitions. [2022-07-19 21:27:31,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 405 transitions. [2022-07-19 21:27:31,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:31,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 405 transitions. [2022-07-19 21:27:31,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 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) [2022-07-19 21:27:31,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 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) [2022-07-19 21:27:31,512 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 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) [2022-07-19 21:27:31,512 INFO L186 Difference]: Start difference. First operand has 113 places, 96 transitions, 286 flow. Second operand 5 states and 405 transitions. [2022-07-19 21:27:31,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 100 transitions, 363 flow [2022-07-19 21:27:31,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 100 transitions, 352 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-07-19 21:27:31,514 INFO L242 Difference]: Finished difference. Result has 113 places, 95 transitions, 276 flow [2022-07-19 21:27:31,514 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=276, PETRI_PLACES=113, PETRI_TRANSITIONS=95} [2022-07-19 21:27:31,515 INFO L279 CegarLoopForPetriNet]: 93 programPoint places, 20 predicate places. [2022-07-19 21:27:31,516 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 95 transitions, 276 flow [2022-07-19 21:27:31,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 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) [2022-07-19 21:27:31,516 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:31,516 INFO L200 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:31,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:27:31,517 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:31,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:31,517 INFO L85 PathProgramCache]: Analyzing trace with hash -2045674615, now seen corresponding path program 1 times [2022-07-19 21:27:31,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:31,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649300088] [2022-07-19 21:27:31,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:31,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:31,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:31,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:31,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649300088] [2022-07-19 21:27:31,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649300088] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:31,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:31,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:31,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622355135] [2022-07-19 21:27:31,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:31,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:31,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:31,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:31,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:31,589 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2022-07-19 21:27:31,590 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 95 transitions, 276 flow. Second operand has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 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) [2022-07-19 21:27:31,590 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:31,590 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2022-07-19 21:27:31,590 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:31,666 INFO L129 PetriNetUnfolder]: 4/159 cut-off events. [2022-07-19 21:27:31,666 INFO L130 PetriNetUnfolder]: For 47/50 co-relation queries the response was YES. [2022-07-19 21:27:31,666 INFO L84 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 159 events. 4/159 cut-off events. For 47/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 308 event pairs, 0 based on Foata normal form. 2/161 useless extension candidates. Maximal degree in co-relation 265. Up to 14 conditions per place. [2022-07-19 21:27:31,667 INFO L132 encePairwiseOnDemand]: 95/102 looper letters, 27 selfloop transitions, 7 changer transitions 0/98 dead transitions. [2022-07-19 21:27:31,667 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 98 transitions, 350 flow [2022-07-19 21:27:31,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:27:31,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:27:31,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 551 transitions. [2022-07-19 21:27:31,668 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7717086834733894 [2022-07-19 21:27:31,668 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 551 transitions. [2022-07-19 21:27:31,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 551 transitions. [2022-07-19 21:27:31,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:31,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 551 transitions. [2022-07-19 21:27:31,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.71428571428571) internal successors, (551), 7 states have internal predecessors, (551), 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) [2022-07-19 21:27:31,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 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) [2022-07-19 21:27:31,671 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 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) [2022-07-19 21:27:31,671 INFO L186 Difference]: Start difference. First operand has 113 places, 95 transitions, 276 flow. Second operand 7 states and 551 transitions. [2022-07-19 21:27:31,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 98 transitions, 350 flow [2022-07-19 21:27:31,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 98 transitions, 345 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:27:31,674 INFO L242 Difference]: Finished difference. Result has 116 places, 95 transitions, 288 flow [2022-07-19 21:27:31,674 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=288, PETRI_PLACES=116, PETRI_TRANSITIONS=95} [2022-07-19 21:27:31,674 INFO L279 CegarLoopForPetriNet]: 93 programPoint places, 23 predicate places. [2022-07-19 21:27:31,675 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 95 transitions, 288 flow [2022-07-19 21:27:31,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 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) [2022-07-19 21:27:31,675 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:31,675 INFO L200 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:31,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:27:31,676 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:31,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:31,676 INFO L85 PathProgramCache]: Analyzing trace with hash 2060768543, now seen corresponding path program 1 times [2022-07-19 21:27:31,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:31,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316407165] [2022-07-19 21:27:31,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:31,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:31,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:31,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:31,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:31,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316407165] [2022-07-19 21:27:31,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316407165] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:31,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:31,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:27:31,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574321845] [2022-07-19 21:27:31,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:31,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:27:31,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:31,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:27:31,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:27:31,751 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 102 [2022-07-19 21:27:31,751 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 95 transitions, 288 flow. Second operand has 8 states, 8 states have (on average 78.375) internal successors, (627), 8 states have internal predecessors, (627), 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) [2022-07-19 21:27:31,752 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:31,752 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 102 [2022-07-19 21:27:31,752 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:31,840 INFO L129 PetriNetUnfolder]: 3/148 cut-off events. [2022-07-19 21:27:31,840 INFO L130 PetriNetUnfolder]: For 56/59 co-relation queries the response was YES. [2022-07-19 21:27:31,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 148 events. 3/148 cut-off events. For 56/59 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 256 event pairs, 2 based on Foata normal form. 2/148 useless extension candidates. Maximal degree in co-relation 282. Up to 39 conditions per place. [2022-07-19 21:27:31,841 INFO L132 encePairwiseOnDemand]: 93/102 looper letters, 26 selfloop transitions, 4 changer transitions 11/106 dead transitions. [2022-07-19 21:27:31,841 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 106 transitions, 384 flow [2022-07-19 21:27:31,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 21:27:31,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-19 21:27:31,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 644 transitions. [2022-07-19 21:27:31,843 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7892156862745098 [2022-07-19 21:27:31,843 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 644 transitions. [2022-07-19 21:27:31,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 644 transitions. [2022-07-19 21:27:31,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:31,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 644 transitions. [2022-07-19 21:27:31,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 80.5) internal successors, (644), 8 states have internal predecessors, (644), 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) [2022-07-19 21:27:31,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 102.0) internal successors, (918), 9 states have internal predecessors, (918), 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) [2022-07-19 21:27:31,846 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 102.0) internal successors, (918), 9 states have internal predecessors, (918), 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) [2022-07-19 21:27:31,847 INFO L186 Difference]: Start difference. First operand has 116 places, 95 transitions, 288 flow. Second operand 8 states and 644 transitions. [2022-07-19 21:27:31,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 106 transitions, 384 flow [2022-07-19 21:27:31,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 106 transitions, 378 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:27:31,850 INFO L242 Difference]: Finished difference. Result has 126 places, 89 transitions, 258 flow [2022-07-19 21:27:31,850 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=258, PETRI_PLACES=126, PETRI_TRANSITIONS=89} [2022-07-19 21:27:31,851 INFO L279 CegarLoopForPetriNet]: 93 programPoint places, 33 predicate places. [2022-07-19 21:27:31,851 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 89 transitions, 258 flow [2022-07-19 21:27:31,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 78.375) internal successors, (627), 8 states have internal predecessors, (627), 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) [2022-07-19 21:27:31,851 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:31,851 INFO L200 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:31,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 21:27:31,852 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:31,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:31,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1648525419, now seen corresponding path program 2 times [2022-07-19 21:27:31,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:31,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704793778] [2022-07-19 21:27:31,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:31,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:31,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:31,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:31,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704793778] [2022-07-19 21:27:31,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704793778] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:31,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:31,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:31,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307246788] [2022-07-19 21:27:31,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:31,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:31,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:31,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:31,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:31,915 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2022-07-19 21:27:31,916 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 89 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 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) [2022-07-19 21:27:31,916 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:31,916 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2022-07-19 21:27:31,916 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:31,974 INFO L129 PetriNetUnfolder]: 0/85 cut-off events. [2022-07-19 21:27:31,974 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-07-19 21:27:31,975 INFO L84 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 85 events. 0/85 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 1/86 useless extension candidates. Maximal degree in co-relation 0. Up to 14 conditions per place. [2022-07-19 21:27:31,975 INFO L132 encePairwiseOnDemand]: 96/102 looper letters, 18 selfloop transitions, 4 changer transitions 4/85 dead transitions. [2022-07-19 21:27:31,975 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 85 transitions, 285 flow [2022-07-19 21:27:31,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:27:31,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:27:31,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 469 transitions. [2022-07-19 21:27:31,976 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7663398692810458 [2022-07-19 21:27:31,976 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 469 transitions. [2022-07-19 21:27:31,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 469 transitions. [2022-07-19 21:27:31,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:31,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 469 transitions. [2022-07-19 21:27:31,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.16666666666667) internal successors, (469), 6 states have internal predecessors, (469), 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) [2022-07-19 21:27:31,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 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) [2022-07-19 21:27:31,979 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 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) [2022-07-19 21:27:31,979 INFO L186 Difference]: Start difference. First operand has 126 places, 89 transitions, 258 flow. Second operand 6 states and 469 transitions. [2022-07-19 21:27:31,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 85 transitions, 285 flow [2022-07-19 21:27:31,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 85 transitions, 238 flow, removed 10 selfloop flow, removed 19 redundant places. [2022-07-19 21:27:31,981 INFO L242 Difference]: Finished difference. Result has 101 places, 81 transitions, 186 flow [2022-07-19 21:27:31,981 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=186, PETRI_PLACES=101, PETRI_TRANSITIONS=81} [2022-07-19 21:27:31,982 INFO L279 CegarLoopForPetriNet]: 93 programPoint places, 8 predicate places. [2022-07-19 21:27:31,982 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 81 transitions, 186 flow [2022-07-19 21:27:31,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 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) [2022-07-19 21:27:31,983 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:31,983 INFO L200 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:31,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 21:27:31,983 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:31,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:31,983 INFO L85 PathProgramCache]: Analyzing trace with hash 124457123, now seen corresponding path program 2 times [2022-07-19 21:27:31,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:31,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243252748] [2022-07-19 21:27:31,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:31,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:32,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:32,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:32,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243252748] [2022-07-19 21:27:32,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243252748] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:32,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:32,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:32,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492445744] [2022-07-19 21:27:32,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:32,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:32,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:32,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:32,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:32,055 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2022-07-19 21:27:32,056 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 81 transitions, 186 flow. Second operand has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 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) [2022-07-19 21:27:32,056 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:32,056 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2022-07-19 21:27:32,056 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:32,104 INFO L129 PetriNetUnfolder]: 0/67 cut-off events. [2022-07-19 21:27:32,104 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:27:32,104 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 67 events. 0/67 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 1/68 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2022-07-19 21:27:32,104 INFO L132 encePairwiseOnDemand]: 96/102 looper letters, 0 selfloop transitions, 0 changer transitions 67/67 dead transitions. [2022-07-19 21:27:32,104 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 67 transitions, 196 flow [2022-07-19 21:27:32,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:27:32,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:27:32,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 466 transitions. [2022-07-19 21:27:32,105 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.761437908496732 [2022-07-19 21:27:32,105 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 466 transitions. [2022-07-19 21:27:32,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 466 transitions. [2022-07-19 21:27:32,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:32,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 466 transitions. [2022-07-19 21:27:32,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 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) [2022-07-19 21:27:32,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 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) [2022-07-19 21:27:32,108 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 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) [2022-07-19 21:27:32,108 INFO L186 Difference]: Start difference. First operand has 101 places, 81 transitions, 186 flow. Second operand 6 states and 466 transitions. [2022-07-19 21:27:32,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 67 transitions, 196 flow [2022-07-19 21:27:32,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 67 transitions, 183 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-07-19 21:27:32,109 INFO L242 Difference]: Finished difference. Result has 79 places, 0 transitions, 0 flow [2022-07-19 21:27:32,109 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=79, PETRI_TRANSITIONS=0} [2022-07-19 21:27:32,110 INFO L279 CegarLoopForPetriNet]: 93 programPoint places, -14 predicate places. [2022-07-19 21:27:32,110 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 0 transitions, 0 flow [2022-07-19 21:27:32,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 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) [2022-07-19 21:27:32,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-07-19 21:27:32,113 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-07-19 21:27:32,113 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-07-19 21:27:32,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 21:27:32,113 INFO L356 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1] [2022-07-19 21:27:32,115 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-19 21:27:32,115 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 21:27:32,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:27:32 BasicIcfg [2022-07-19 21:27:32,121 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 21:27:32,122 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 21:27:32,122 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 21:27:32,122 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 21:27:32,122 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:27:29" (3/4) ... [2022-07-19 21:27:32,124 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 21:27:32,128 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-07-19 21:27:32,128 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-07-19 21:27:32,132 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-07-19 21:27:32,132 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-19 21:27:32,133 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 21:27:32,133 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 21:27:32,161 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 21:27:32,161 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 21:27:32,162 INFO L158 Benchmark]: Toolchain (without parser) took 3587.08ms. Allocated memory was 94.4MB in the beginning and 161.5MB in the end (delta: 67.1MB). Free memory was 62.8MB in the beginning and 52.5MB in the end (delta: 10.3MB). Peak memory consumption was 76.6MB. Max. memory is 16.1GB. [2022-07-19 21:27:32,162 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 94.4MB. Free memory is still 50.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:27:32,162 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.95ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 62.6MB in the beginning and 99.8MB in the end (delta: -37.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 21:27:32,162 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.75ms. Allocated memory is still 125.8MB. Free memory was 99.8MB in the beginning and 97.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:27:32,162 INFO L158 Benchmark]: Boogie Preprocessor took 16.29ms. Allocated memory is still 125.8MB. Free memory was 97.7MB in the beginning and 96.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:27:32,163 INFO L158 Benchmark]: RCFGBuilder took 641.71ms. Allocated memory is still 125.8MB. Free memory was 96.6MB in the beginning and 90.6MB in the end (delta: 6.0MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. [2022-07-19 21:27:32,163 INFO L158 Benchmark]: TraceAbstraction took 2662.04ms. Allocated memory was 125.8MB in the beginning and 161.5MB in the end (delta: 35.7MB). Free memory was 90.0MB in the beginning and 55.7MB in the end (delta: 34.3MB). Peak memory consumption was 70.1MB. Max. memory is 16.1GB. [2022-07-19 21:27:32,163 INFO L158 Benchmark]: Witness Printer took 39.01ms. Allocated memory is still 161.5MB. Free memory was 55.7MB in the beginning and 52.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:27:32,164 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 94.4MB. Free memory is still 50.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 190.95ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 62.6MB in the beginning and 99.8MB in the end (delta: -37.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.75ms. Allocated memory is still 125.8MB. Free memory was 99.8MB in the beginning and 97.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.29ms. Allocated memory is still 125.8MB. Free memory was 97.7MB in the beginning and 96.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 641.71ms. Allocated memory is still 125.8MB. Free memory was 96.6MB in the beginning and 90.6MB in the end (delta: 6.0MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2662.04ms. Allocated memory was 125.8MB in the beginning and 161.5MB in the end (delta: 35.7MB). Free memory was 90.0MB in the beginning and 55.7MB in the end (delta: 34.3MB). Peak memory consumption was 70.1MB. Max. memory is 16.1GB. * Witness Printer took 39.01ms. Allocated memory is still 161.5MB. Free memory was 55.7MB in the beginning and 52.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 80]: 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 5 procedures, 108 locations, 3 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: 2.6s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 246 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 246 mSDsluCounter, 440 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 465 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 651 IncrementalHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 147 mSDtfsCounter, 651 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=330occurred in iteration=4, InterpolantAutomatonStates: 73, 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, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 875 NumberOfCodeBlocks, 875 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 864 ConstructedInterpolants, 0 QuantifiedInterpolants, 2320 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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! [2022-07-19 21:27:32,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE