./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-misc-3-extended.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/parallel-misc-3-extended.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 b699de581afb3d801299d89a35eee78f9e3cb86ad1a23fab537b92eb394c5e62 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:29:27,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:29:27,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:29:27,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:29:27,075 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:29:27,076 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:29:27,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:29:27,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:29:27,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:29:27,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:29:27,087 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:29:27,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:29:27,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:29:27,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:29:27,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:29:27,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:29:27,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:29:27,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:29:27,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:29:27,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:29:27,103 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:29:27,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:29:27,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:29:27,104 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:29:27,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:29:27,106 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:29:27,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:29:27,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:29:27,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:29:27,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:29:27,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:29:27,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:29:27,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:29:27,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:29:27,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:29:27,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:29:27,111 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:29:27,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:29:27,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:29:27,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:29:27,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:29:27,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:29:27,113 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:29:27,131 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:29:27,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:29:27,132 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:29:27,132 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:29:27,133 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:29:27,134 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:29:27,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:29:27,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:29:27,134 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:29:27,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:29:27,135 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:29:27,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:29:27,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:29:27,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:29:27,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:29:27,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:29:27,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:29:27,136 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:29:27,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:29:27,137 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:29:27,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:29:27,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:29:27,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:29:27,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:29:27,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:29:27,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:29:27,138 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:29:27,138 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:29:27,138 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:29:27,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:29:27,139 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:29:27,139 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:29:27,139 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:29:27,139 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b699de581afb3d801299d89a35eee78f9e3cb86ad1a23fab537b92eb394c5e62 [2022-07-19 21:29:27,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:29:27,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:29:27,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:29:27,312 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:29:27,312 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:29:27,313 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2022-07-19 21:29:27,365 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d0f69d34/74efb7bff7c44c83956c763854853777/FLAGae8000aa2 [2022-07-19 21:29:27,719 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:29:27,720 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2022-07-19 21:29:27,725 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d0f69d34/74efb7bff7c44c83956c763854853777/FLAGae8000aa2 [2022-07-19 21:29:27,738 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d0f69d34/74efb7bff7c44c83956c763854853777 [2022-07-19 21:29:27,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:29:27,740 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:29:27,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:29:27,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:29:27,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:29:27,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:29:27" (1/1) ... [2022-07-19 21:29:27,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ffd9c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:29:27, skipping insertion in model container [2022-07-19 21:29:27,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:29:27" (1/1) ... [2022-07-19 21:29:27,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:29:27,760 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:29:27,891 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/parallel-misc-3-extended.wvr.c[2856,2869] [2022-07-19 21:29:27,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:29:27,902 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:29:27,921 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/parallel-misc-3-extended.wvr.c[2856,2869] [2022-07-19 21:29:27,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:29:27,930 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:29:27,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:29:27 WrapperNode [2022-07-19 21:29:27,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:29:27,931 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:29:27,931 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:29:27,931 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:29:27,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:29:27" (1/1) ... [2022-07-19 21:29:27,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:29:27" (1/1) ... [2022-07-19 21:29:27,955 INFO L137 Inliner]: procedures = 22, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-07-19 21:29:27,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:29:27,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:29:27,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:29:27,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:29:27,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:29:27" (1/1) ... [2022-07-19 21:29:27,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:29:27" (1/1) ... [2022-07-19 21:29:27,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:29:27" (1/1) ... [2022-07-19 21:29:27,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:29:27" (1/1) ... [2022-07-19 21:29:27,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:29:27" (1/1) ... [2022-07-19 21:29:27,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:29:27" (1/1) ... [2022-07-19 21:29:27,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:29:27" (1/1) ... [2022-07-19 21:29:27,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:29:27,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:29:27,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:29:27,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:29:27,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:29:27" (1/1) ... [2022-07-19 21:29:27,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:29:27,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:29:27,998 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 21:29:28,000 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 21:29:28,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:29:28,021 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:29:28,021 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:29:28,021 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:29:28,021 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:29:28,021 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-19 21:29:28,021 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-19 21:29:28,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:29:28,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:29:28,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:29:28,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-19 21:29:28,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-19 21:29:28,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:29:28,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:29:28,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:29:28,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:29:28,023 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 21:29:28,082 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:29:28,083 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:29:28,215 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:29:28,230 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:29:28,230 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-19 21:29:28,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:29:28 BoogieIcfgContainer [2022-07-19 21:29:28,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:29:28,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:29:28,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:29:28,235 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:29:28,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:29:27" (1/3) ... [2022-07-19 21:29:28,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae472d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:29:28, skipping insertion in model container [2022-07-19 21:29:28,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:29:27" (2/3) ... [2022-07-19 21:29:28,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae472d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:29:28, skipping insertion in model container [2022-07-19 21:29:28,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:29:28" (3/3) ... [2022-07-19 21:29:28,237 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2022-07-19 21:29:28,240 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:29:28,246 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:29:28,247 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:29:28,247 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:29:28,319 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-19 21:29:28,347 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 123 places, 129 transitions, 282 flow [2022-07-19 21:29:28,385 INFO L129 PetriNetUnfolder]: 16/126 cut-off events. [2022-07-19 21:29:28,385 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:29:28,394 INFO L84 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 126 events. 16/126 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 129 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 81. Up to 4 conditions per place. [2022-07-19 21:29:28,397 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 129 transitions, 282 flow [2022-07-19 21:29:28,403 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 115 transitions, 248 flow [2022-07-19 21:29:28,409 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:29:28,417 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@42bc9052, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6166f733 [2022-07-19 21:29:28,417 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-19 21:29:28,449 INFO L129 PetriNetUnfolder]: 16/114 cut-off events. [2022-07-19 21:29:28,449 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:29:28,449 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:28,450 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] [2022-07-19 21:29:28,450 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:28,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:28,454 INFO L85 PathProgramCache]: Analyzing trace with hash 541665351, now seen corresponding path program 1 times [2022-07-19 21:29:28,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:28,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868016359] [2022-07-19 21:29:28,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:28,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:28,683 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 21:29:28,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:28,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868016359] [2022-07-19 21:29:28,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868016359] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:28,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:28,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:29:28,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188632246] [2022-07-19 21:29:28,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:28,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:29:28,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:28,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:29:28,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:29:28,727 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 129 [2022-07-19 21:29:28,732 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 115 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 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 21:29:28,732 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:28,732 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 129 [2022-07-19 21:29:28,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:28,846 INFO L129 PetriNetUnfolder]: 62/249 cut-off events. [2022-07-19 21:29:28,847 INFO L130 PetriNetUnfolder]: For 38/39 co-relation queries the response was YES. [2022-07-19 21:29:28,851 INFO L84 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 249 events. 62/249 cut-off events. For 38/39 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 677 event pairs, 5 based on Foata normal form. 25/229 useless extension candidates. Maximal degree in co-relation 223. Up to 31 conditions per place. [2022-07-19 21:29:28,854 INFO L132 encePairwiseOnDemand]: 122/129 looper letters, 17 selfloop transitions, 2 changer transitions 1/117 dead transitions. [2022-07-19 21:29:28,854 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 117 transitions, 296 flow [2022-07-19 21:29:28,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:29:28,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:29:28,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 360 transitions. [2022-07-19 21:29:28,888 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9302325581395349 [2022-07-19 21:29:28,889 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 360 transitions. [2022-07-19 21:29:28,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 360 transitions. [2022-07-19 21:29:28,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:28,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 360 transitions. [2022-07-19 21:29:28,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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 21:29:28,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 21:29:28,905 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 21:29:28,906 INFO L186 Difference]: Start difference. First operand has 109 places, 115 transitions, 248 flow. Second operand 3 states and 360 transitions. [2022-07-19 21:29:28,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 117 transitions, 296 flow [2022-07-19 21:29:28,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 117 transitions, 280 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-19 21:29:28,914 INFO L242 Difference]: Finished difference. Result has 106 places, 111 transitions, 238 flow [2022-07-19 21:29:28,916 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=106, PETRI_TRANSITIONS=111} [2022-07-19 21:29:28,919 INFO L279 CegarLoopForPetriNet]: 109 programPoint places, -3 predicate places. [2022-07-19 21:29:28,919 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 111 transitions, 238 flow [2022-07-19 21:29:28,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 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 21:29:28,920 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:28,920 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 21:29:28,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:29:28,921 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:28,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:28,922 INFO L85 PathProgramCache]: Analyzing trace with hash 596810869, now seen corresponding path program 1 times [2022-07-19 21:29:28,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:28,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416276011] [2022-07-19 21:29:28,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:28,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:28,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:29,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:29:29,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:29,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416276011] [2022-07-19 21:29:29,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416276011] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:29,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:29,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:29:29,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390025728] [2022-07-19 21:29:29,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:29,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:29:29,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:29,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:29:29,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:29:29,047 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 129 [2022-07-19 21:29:29,047 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 111 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 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 21:29:29,047 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:29,047 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 129 [2022-07-19 21:29:29,047 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:29,125 INFO L129 PetriNetUnfolder]: 84/302 cut-off events. [2022-07-19 21:29:29,125 INFO L130 PetriNetUnfolder]: For 8/9 co-relation queries the response was YES. [2022-07-19 21:29:29,136 INFO L84 FinitePrefix]: Finished finitePrefix Result has 393 conditions, 302 events. 84/302 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1046 event pairs, 7 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 327. Up to 45 conditions per place. [2022-07-19 21:29:29,137 INFO L132 encePairwiseOnDemand]: 126/129 looper letters, 17 selfloop transitions, 2 changer transitions 0/117 dead transitions. [2022-07-19 21:29:29,138 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 117 transitions, 290 flow [2022-07-19 21:29:29,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:29:29,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:29:29,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2022-07-19 21:29:29,139 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9121447028423773 [2022-07-19 21:29:29,140 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2022-07-19 21:29:29,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2022-07-19 21:29:29,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:29,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2022-07-19 21:29:29,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 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 21:29:29,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 21:29:29,143 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 21:29:29,143 INFO L186 Difference]: Start difference. First operand has 106 places, 111 transitions, 238 flow. Second operand 3 states and 353 transitions. [2022-07-19 21:29:29,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 117 transitions, 290 flow [2022-07-19 21:29:29,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 117 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:29:29,148 INFO L242 Difference]: Finished difference. Result has 107 places, 112 transitions, 248 flow [2022-07-19 21:29:29,148 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=107, PETRI_TRANSITIONS=112} [2022-07-19 21:29:29,148 INFO L279 CegarLoopForPetriNet]: 109 programPoint places, -2 predicate places. [2022-07-19 21:29:29,149 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 112 transitions, 248 flow [2022-07-19 21:29:29,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 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 21:29:29,149 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:29,149 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, 1, 1, 1, 1, 1, 1] [2022-07-19 21:29:29,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:29:29,150 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:29,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:29,151 INFO L85 PathProgramCache]: Analyzing trace with hash -177901063, now seen corresponding path program 1 times [2022-07-19 21:29:29,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:29,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104154514] [2022-07-19 21:29:29,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:29,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:29,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:29:29,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:29,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104154514] [2022-07-19 21:29:29,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104154514] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:29,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:29,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:29:29,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831906675] [2022-07-19 21:29:29,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:29,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:29:29,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:29,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:29:29,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:29:29,255 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 129 [2022-07-19 21:29:29,256 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 112 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 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 21:29:29,256 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:29,256 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 129 [2022-07-19 21:29:29,256 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:29,295 INFO L129 PetriNetUnfolder]: 47/219 cut-off events. [2022-07-19 21:29:29,295 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-19 21:29:29,296 INFO L84 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 219 events. 47/219 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 677 event pairs, 4 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 228. Up to 31 conditions per place. [2022-07-19 21:29:29,297 INFO L132 encePairwiseOnDemand]: 126/129 looper letters, 17 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2022-07-19 21:29:29,297 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 118 transitions, 300 flow [2022-07-19 21:29:29,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:29:29,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:29:29,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2022-07-19 21:29:29,299 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9121447028423773 [2022-07-19 21:29:29,300 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2022-07-19 21:29:29,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2022-07-19 21:29:29,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:29,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2022-07-19 21:29:29,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 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 21:29:29,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 21:29:29,302 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 21:29:29,302 INFO L186 Difference]: Start difference. First operand has 107 places, 112 transitions, 248 flow. Second operand 3 states and 353 transitions. [2022-07-19 21:29:29,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 118 transitions, 300 flow [2022-07-19 21:29:29,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 118 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:29:29,307 INFO L242 Difference]: Finished difference. Result has 109 places, 113 transitions, 258 flow [2022-07-19 21:29:29,307 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=109, PETRI_TRANSITIONS=113} [2022-07-19 21:29:29,308 INFO L279 CegarLoopForPetriNet]: 109 programPoint places, 0 predicate places. [2022-07-19 21:29:29,309 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 113 transitions, 258 flow [2022-07-19 21:29:29,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 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 21:29:29,309 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:29,309 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:29:29,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:29:29,310 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:29,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:29,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1974745399, now seen corresponding path program 1 times [2022-07-19 21:29:29,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:29,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287004646] [2022-07-19 21:29:29,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:29,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:29,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:29:29,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:29,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287004646] [2022-07-19 21:29:29,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287004646] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:29,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:29,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:29:29,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740676358] [2022-07-19 21:29:29,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:29,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:29:29,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:29,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:29:29,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:29:29,411 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2022-07-19 21:29:29,412 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 113 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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 21:29:29,412 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:29,412 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2022-07-19 21:29:29,412 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:29,484 INFO L129 PetriNetUnfolder]: 132/419 cut-off events. [2022-07-19 21:29:29,484 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-07-19 21:29:29,486 INFO L84 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 419 events. 132/419 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1748 event pairs, 8 based on Foata normal form. 0/348 useless extension candidates. Maximal degree in co-relation 490. Up to 112 conditions per place. [2022-07-19 21:29:29,489 INFO L132 encePairwiseOnDemand]: 126/129 looper letters, 19 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2022-07-19 21:29:29,490 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 119 transitions, 314 flow [2022-07-19 21:29:29,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:29:29,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:29:29,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2022-07-19 21:29:29,492 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9018087855297158 [2022-07-19 21:29:29,492 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2022-07-19 21:29:29,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2022-07-19 21:29:29,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:29,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2022-07-19 21:29:29,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 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 21:29:29,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 21:29:29,496 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 21:29:29,497 INFO L186 Difference]: Start difference. First operand has 109 places, 113 transitions, 258 flow. Second operand 3 states and 349 transitions. [2022-07-19 21:29:29,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 119 transitions, 314 flow [2022-07-19 21:29:29,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 119 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:29:29,501 INFO L242 Difference]: Finished difference. Result has 111 places, 114 transitions, 268 flow [2022-07-19 21:29:29,501 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=111, PETRI_TRANSITIONS=114} [2022-07-19 21:29:29,507 INFO L279 CegarLoopForPetriNet]: 109 programPoint places, 2 predicate places. [2022-07-19 21:29:29,508 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 114 transitions, 268 flow [2022-07-19 21:29:29,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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 21:29:29,508 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:29,508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:29:29,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:29:29,509 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:29,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:29,509 INFO L85 PathProgramCache]: Analyzing trace with hash 53932017, now seen corresponding path program 1 times [2022-07-19 21:29:29,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:29,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449109809] [2022-07-19 21:29:29,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:29,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:29,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:29:29,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:29,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449109809] [2022-07-19 21:29:29,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449109809] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:29,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:29,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:29:29,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663258961] [2022-07-19 21:29:29,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:29,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:29:29,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:29,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:29:29,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:29:29,631 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2022-07-19 21:29:29,632 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 114 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 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 21:29:29,632 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:29,632 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2022-07-19 21:29:29,632 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:29,696 INFO L129 PetriNetUnfolder]: 55/277 cut-off events. [2022-07-19 21:29:29,696 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-19 21:29:29,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 438 conditions, 277 events. 55/277 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1080 event pairs, 16 based on Foata normal form. 0/256 useless extension candidates. Maximal degree in co-relation 355. Up to 47 conditions per place. [2022-07-19 21:29:29,698 INFO L132 encePairwiseOnDemand]: 122/129 looper letters, 17 selfloop transitions, 4 changer transitions 0/120 dead transitions. [2022-07-19 21:29:29,699 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 120 transitions, 327 flow [2022-07-19 21:29:29,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 21:29:29,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-19 21:29:29,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 461 transitions. [2022-07-19 21:29:29,700 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8934108527131783 [2022-07-19 21:29:29,700 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 461 transitions. [2022-07-19 21:29:29,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 461 transitions. [2022-07-19 21:29:29,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:29,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 461 transitions. [2022-07-19 21:29:29,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 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 21:29:29,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 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 21:29:29,702 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 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 21:29:29,702 INFO L186 Difference]: Start difference. First operand has 111 places, 114 transitions, 268 flow. Second operand 4 states and 461 transitions. [2022-07-19 21:29:29,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 120 transitions, 327 flow [2022-07-19 21:29:29,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 120 transitions, 325 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:29:29,705 INFO L242 Difference]: Finished difference. Result has 115 places, 115 transitions, 291 flow [2022-07-19 21:29:29,705 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=291, PETRI_PLACES=115, PETRI_TRANSITIONS=115} [2022-07-19 21:29:29,707 INFO L279 CegarLoopForPetriNet]: 109 programPoint places, 6 predicate places. [2022-07-19 21:29:29,707 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 115 transitions, 291 flow [2022-07-19 21:29:29,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 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 21:29:29,708 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:29,708 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:29:29,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:29:29,708 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:29,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:29,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1743312032, now seen corresponding path program 1 times [2022-07-19 21:29:29,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:29,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729479208] [2022-07-19 21:29:29,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:29,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:29,796 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-19 21:29:29,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:29,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729479208] [2022-07-19 21:29:29,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729479208] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:29,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:29,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:29:29,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379899528] [2022-07-19 21:29:29,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:29,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:29:29,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:29,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:29:29,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:29:29,798 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2022-07-19 21:29:29,799 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 115 transitions, 291 flow. Second operand has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 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 21:29:29,799 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:29,799 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2022-07-19 21:29:29,799 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:29,928 INFO L129 PetriNetUnfolder]: 326/1333 cut-off events. [2022-07-19 21:29:29,928 INFO L130 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2022-07-19 21:29:29,936 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2036 conditions, 1333 events. 326/1333 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 9469 event pairs, 98 based on Foata normal form. 0/1224 useless extension candidates. Maximal degree in co-relation 1686. Up to 192 conditions per place. [2022-07-19 21:29:29,942 INFO L132 encePairwiseOnDemand]: 122/129 looper letters, 18 selfloop transitions, 4 changer transitions 0/122 dead transitions. [2022-07-19 21:29:29,942 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 122 transitions, 353 flow [2022-07-19 21:29:29,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 21:29:29,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-19 21:29:29,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 462 transitions. [2022-07-19 21:29:29,943 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8953488372093024 [2022-07-19 21:29:29,943 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 462 transitions. [2022-07-19 21:29:29,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 462 transitions. [2022-07-19 21:29:29,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:29,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 462 transitions. [2022-07-19 21:29:29,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 115.5) internal successors, (462), 4 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:29,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 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 21:29:29,945 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 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 21:29:29,945 INFO L186 Difference]: Start difference. First operand has 115 places, 115 transitions, 291 flow. Second operand 4 states and 462 transitions. [2022-07-19 21:29:29,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 122 transitions, 353 flow [2022-07-19 21:29:29,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 122 transitions, 352 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:29:29,948 INFO L242 Difference]: Finished difference. Result has 119 places, 116 transitions, 315 flow [2022-07-19 21:29:29,948 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=315, PETRI_PLACES=119, PETRI_TRANSITIONS=116} [2022-07-19 21:29:29,949 INFO L279 CegarLoopForPetriNet]: 109 programPoint places, 10 predicate places. [2022-07-19 21:29:29,949 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 116 transitions, 315 flow [2022-07-19 21:29:29,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 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 21:29:29,949 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:29,949 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:29:29,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:29:29,950 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:29,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:29,950 INFO L85 PathProgramCache]: Analyzing trace with hash -847087654, now seen corresponding path program 1 times [2022-07-19 21:29:29,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:29,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669134283] [2022-07-19 21:29:29,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:29,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:30,021 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 21:29:30,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:30,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669134283] [2022-07-19 21:29:30,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669134283] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:30,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:30,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:29:30,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996513965] [2022-07-19 21:29:30,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:30,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:29:30,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:30,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:29:30,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:29:30,028 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2022-07-19 21:29:30,028 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 116 transitions, 315 flow. Second operand has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 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 21:29:30,028 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:30,028 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2022-07-19 21:29:30,029 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:30,151 INFO L129 PetriNetUnfolder]: 189/919 cut-off events. [2022-07-19 21:29:30,151 INFO L130 PetriNetUnfolder]: For 219/219 co-relation queries the response was YES. [2022-07-19 21:29:30,157 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1511 conditions, 919 events. 189/919 cut-off events. For 219/219 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 6199 event pairs, 78 based on Foata normal form. 44/881 useless extension candidates. Maximal degree in co-relation 1103. Up to 181 conditions per place. [2022-07-19 21:29:30,161 INFO L132 encePairwiseOnDemand]: 122/129 looper letters, 17 selfloop transitions, 5 changer transitions 0/122 dead transitions. [2022-07-19 21:29:30,161 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 122 transitions, 376 flow [2022-07-19 21:29:30,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 21:29:30,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-19 21:29:30,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 461 transitions. [2022-07-19 21:29:30,162 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8934108527131783 [2022-07-19 21:29:30,163 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 461 transitions. [2022-07-19 21:29:30,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 461 transitions. [2022-07-19 21:29:30,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:30,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 461 transitions. [2022-07-19 21:29:30,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 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 21:29:30,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 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 21:29:30,165 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 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 21:29:30,165 INFO L186 Difference]: Start difference. First operand has 119 places, 116 transitions, 315 flow. Second operand 4 states and 461 transitions. [2022-07-19 21:29:30,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 122 transitions, 376 flow [2022-07-19 21:29:30,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 122 transitions, 375 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:29:30,170 INFO L242 Difference]: Finished difference. Result has 123 places, 117 transitions, 345 flow [2022-07-19 21:29:30,170 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=345, PETRI_PLACES=123, PETRI_TRANSITIONS=117} [2022-07-19 21:29:30,171 INFO L279 CegarLoopForPetriNet]: 109 programPoint places, 14 predicate places. [2022-07-19 21:29:30,171 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 117 transitions, 345 flow [2022-07-19 21:29:30,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 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 21:29:30,171 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:30,171 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:29:30,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:29:30,172 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:30,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:30,172 INFO L85 PathProgramCache]: Analyzing trace with hash -856250593, now seen corresponding path program 1 times [2022-07-19 21:29:30,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:30,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178679032] [2022-07-19 21:29:30,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:30,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:30,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:30,293 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 21:29:30,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:30,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178679032] [2022-07-19 21:29:30,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178679032] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:29:30,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485970462] [2022-07-19 21:29:30,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:30,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:29:30,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:29:30,295 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:29:30,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 21:29:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:30,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-19 21:29:30,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:29:30,608 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 21:29:30,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:29:30,739 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 21:29:30,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485970462] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:29:30,740 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:29:30,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2022-07-19 21:29:30,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035463431] [2022-07-19 21:29:30,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:29:30,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:29:30,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:30,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:29:30,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:29:30,742 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 129 [2022-07-19 21:29:30,743 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 117 transitions, 345 flow. Second operand has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 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 21:29:30,743 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:30,743 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 129 [2022-07-19 21:29:30,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:31,130 INFO L129 PetriNetUnfolder]: 789/3544 cut-off events. [2022-07-19 21:29:31,131 INFO L130 PetriNetUnfolder]: For 786/786 co-relation queries the response was YES. [2022-07-19 21:29:31,144 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6234 conditions, 3544 events. 789/3544 cut-off events. For 786/786 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 32142 event pairs, 127 based on Foata normal form. 1/3326 useless extension candidates. Maximal degree in co-relation 3872. Up to 768 conditions per place. [2022-07-19 21:29:31,155 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 36 selfloop transitions, 12 changer transitions 4/152 dead transitions. [2022-07-19 21:29:31,155 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 152 transitions, 532 flow [2022-07-19 21:29:31,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:29:31,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:29:31,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 795 transitions. [2022-07-19 21:29:31,157 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8803986710963455 [2022-07-19 21:29:31,158 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 795 transitions. [2022-07-19 21:29:31,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 795 transitions. [2022-07-19 21:29:31,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:31,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 795 transitions. [2022-07-19 21:29:31,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 113.57142857142857) internal successors, (795), 7 states have internal predecessors, (795), 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 21:29:31,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 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 21:29:31,161 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 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 21:29:31,161 INFO L186 Difference]: Start difference. First operand has 123 places, 117 transitions, 345 flow. Second operand 7 states and 795 transitions. [2022-07-19 21:29:31,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 152 transitions, 532 flow [2022-07-19 21:29:31,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 152 transitions, 527 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-19 21:29:31,164 INFO L242 Difference]: Finished difference. Result has 133 places, 128 transitions, 422 flow [2022-07-19 21:29:31,165 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=422, PETRI_PLACES=133, PETRI_TRANSITIONS=128} [2022-07-19 21:29:31,165 INFO L279 CegarLoopForPetriNet]: 109 programPoint places, 24 predicate places. [2022-07-19 21:29:31,165 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 128 transitions, 422 flow [2022-07-19 21:29:31,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 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 21:29:31,166 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:31,166 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:29:31,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 21:29:31,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:29:31,383 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:31,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:31,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1562411759, now seen corresponding path program 2 times [2022-07-19 21:29:31,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:31,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268004056] [2022-07-19 21:29:31,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:31,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:31,502 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:29:31,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:31,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268004056] [2022-07-19 21:29:31,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268004056] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:29:31,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716115040] [2022-07-19 21:29:31,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 21:29:31,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:29:31,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:29:31,504 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:29:31,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 21:29:31,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 21:29:31,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:29:31,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-19 21:29:31,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:29:31,728 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:29:31,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:29:31,865 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:29:31,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716115040] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:29:31,866 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:29:31,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 8 [2022-07-19 21:29:31,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136588415] [2022-07-19 21:29:31,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:29:31,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:29:31,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:31,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:29:31,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:29:31,868 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 129 [2022-07-19 21:29:31,869 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 128 transitions, 422 flow. Second operand has 8 states, 8 states have (on average 108.125) internal successors, (865), 8 states have internal predecessors, (865), 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 21:29:31,869 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:31,869 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 129 [2022-07-19 21:29:31,869 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:32,413 INFO L129 PetriNetUnfolder]: 955/4323 cut-off events. [2022-07-19 21:29:32,414 INFO L130 PetriNetUnfolder]: For 1823/1953 co-relation queries the response was YES. [2022-07-19 21:29:32,433 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8894 conditions, 4323 events. 955/4323 cut-off events. For 1823/1953 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 41455 event pairs, 132 based on Foata normal form. 101/4141 useless extension candidates. Maximal degree in co-relation 8801. Up to 739 conditions per place. [2022-07-19 21:29:32,446 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 43 selfloop transitions, 26 changer transitions 4/173 dead transitions. [2022-07-19 21:29:32,446 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 173 transitions, 724 flow [2022-07-19 21:29:32,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 21:29:32,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-19 21:29:32,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 911 transitions. [2022-07-19 21:29:32,448 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8827519379844961 [2022-07-19 21:29:32,449 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 911 transitions. [2022-07-19 21:29:32,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 911 transitions. [2022-07-19 21:29:32,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:32,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 911 transitions. [2022-07-19 21:29:32,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 113.875) internal successors, (911), 8 states have internal predecessors, (911), 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 21:29:32,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 129.0) internal successors, (1161), 9 states have internal predecessors, (1161), 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 21:29:32,452 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 129.0) internal successors, (1161), 9 states have internal predecessors, (1161), 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 21:29:32,452 INFO L186 Difference]: Start difference. First operand has 133 places, 128 transitions, 422 flow. Second operand 8 states and 911 transitions. [2022-07-19 21:29:32,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 173 transitions, 724 flow [2022-07-19 21:29:32,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 173 transitions, 706 flow, removed 9 selfloop flow, removed 2 redundant places. [2022-07-19 21:29:32,458 INFO L242 Difference]: Finished difference. Result has 140 places, 142 transitions, 565 flow [2022-07-19 21:29:32,458 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=565, PETRI_PLACES=140, PETRI_TRANSITIONS=142} [2022-07-19 21:29:32,459 INFO L279 CegarLoopForPetriNet]: 109 programPoint places, 31 predicate places. [2022-07-19 21:29:32,459 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 142 transitions, 565 flow [2022-07-19 21:29:32,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 108.125) internal successors, (865), 8 states have internal predecessors, (865), 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 21:29:32,460 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:32,460 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:29:32,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 21:29:32,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-19 21:29:32,671 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:32,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:32,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1810944733, now seen corresponding path program 3 times [2022-07-19 21:29:32,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:32,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773779389] [2022-07-19 21:29:32,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:32,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:32,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:32,743 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:29:32,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:32,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773779389] [2022-07-19 21:29:32,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773779389] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:29:32,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26911740] [2022-07-19 21:29:32,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 21:29:32,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:29:32,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:29:32,745 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:29:32,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 21:29:32,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-19 21:29:32,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:29:32,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-19 21:29:32,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:29:32,976 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:29:32,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:29:33,079 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:29:33,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26911740] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:29:33,080 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:29:33,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 8 [2022-07-19 21:29:33,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693779675] [2022-07-19 21:29:33,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:29:33,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:29:33,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:33,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:29:33,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:29:33,081 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 129 [2022-07-19 21:29:33,082 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 142 transitions, 565 flow. Second operand has 8 states, 8 states have (on average 108.125) internal successors, (865), 8 states have internal predecessors, (865), 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 21:29:33,082 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:33,082 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 129 [2022-07-19 21:29:33,082 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:33,760 INFO L129 PetriNetUnfolder]: 1190/5423 cut-off events. [2022-07-19 21:29:33,760 INFO L130 PetriNetUnfolder]: For 4397/4770 co-relation queries the response was YES. [2022-07-19 21:29:33,789 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12342 conditions, 5423 events. 1190/5423 cut-off events. For 4397/4770 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 55186 event pairs, 138 based on Foata normal form. 175/5222 useless extension candidates. Maximal degree in co-relation 12221. Up to 825 conditions per place. [2022-07-19 21:29:33,827 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 57 selfloop transitions, 28 changer transitions 4/189 dead transitions. [2022-07-19 21:29:33,827 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 189 transitions, 947 flow [2022-07-19 21:29:33,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 21:29:33,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-19 21:29:33,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 913 transitions. [2022-07-19 21:29:33,829 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8846899224806202 [2022-07-19 21:29:33,829 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 913 transitions. [2022-07-19 21:29:33,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 913 transitions. [2022-07-19 21:29:33,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:33,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 913 transitions. [2022-07-19 21:29:33,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 114.125) internal successors, (913), 8 states have internal predecessors, (913), 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 21:29:33,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 129.0) internal successors, (1161), 9 states have internal predecessors, (1161), 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 21:29:33,833 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 129.0) internal successors, (1161), 9 states have internal predecessors, (1161), 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 21:29:33,833 INFO L186 Difference]: Start difference. First operand has 140 places, 142 transitions, 565 flow. Second operand 8 states and 913 transitions. [2022-07-19 21:29:33,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 189 transitions, 947 flow [2022-07-19 21:29:33,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 189 transitions, 862 flow, removed 39 selfloop flow, removed 3 redundant places. [2022-07-19 21:29:33,842 INFO L242 Difference]: Finished difference. Result has 145 places, 158 transitions, 685 flow [2022-07-19 21:29:33,842 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=685, PETRI_PLACES=145, PETRI_TRANSITIONS=158} [2022-07-19 21:29:33,842 INFO L279 CegarLoopForPetriNet]: 109 programPoint places, 36 predicate places. [2022-07-19 21:29:33,842 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 158 transitions, 685 flow [2022-07-19 21:29:33,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 108.125) internal successors, (865), 8 states have internal predecessors, (865), 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 21:29:33,843 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:33,843 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:29:33,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 21:29:34,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:29:34,060 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:34,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:34,060 INFO L85 PathProgramCache]: Analyzing trace with hash -442997483, now seen corresponding path program 4 times [2022-07-19 21:29:34,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:34,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790353049] [2022-07-19 21:29:34,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:34,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:34,144 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:29:34,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:34,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790353049] [2022-07-19 21:29:34,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790353049] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:29:34,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106176108] [2022-07-19 21:29:34,145 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-19 21:29:34,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:29:34,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:29:34,151 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:29:34,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 21:29:34,211 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-19 21:29:34,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:29:34,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-19 21:29:34,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:29:34,348 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:29:34,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:29:34,464 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:29:34,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106176108] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:29:34,464 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:29:34,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2022-07-19 21:29:34,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025991725] [2022-07-19 21:29:34,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:29:34,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:29:34,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:34,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:29:34,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:29:34,467 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 129 [2022-07-19 21:29:34,467 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 158 transitions, 685 flow. Second operand has 9 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 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 21:29:34,467 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:34,468 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 129 [2022-07-19 21:29:34,468 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:35,307 INFO L129 PetriNetUnfolder]: 1517/6983 cut-off events. [2022-07-19 21:29:35,308 INFO L130 PetriNetUnfolder]: For 5938/6469 co-relation queries the response was YES. [2022-07-19 21:29:35,345 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16007 conditions, 6983 events. 1517/6983 cut-off events. For 5938/6469 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 75249 event pairs, 173 based on Foata normal form. 195/6683 useless extension candidates. Maximal degree in co-relation 15855. Up to 1005 conditions per place. [2022-07-19 21:29:35,370 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 50 selfloop transitions, 61 changer transitions 4/215 dead transitions. [2022-07-19 21:29:35,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 215 transitions, 1162 flow [2022-07-19 21:29:35,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:29:35,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:29:35,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1029 transitions. [2022-07-19 21:29:35,372 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8863049095607235 [2022-07-19 21:29:35,372 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1029 transitions. [2022-07-19 21:29:35,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1029 transitions. [2022-07-19 21:29:35,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:35,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1029 transitions. [2022-07-19 21:29:35,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 114.33333333333333) internal successors, (1029), 9 states have internal predecessors, (1029), 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 21:29:35,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 129.0) internal successors, (1290), 10 states have internal predecessors, (1290), 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 21:29:35,376 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 129.0) internal successors, (1290), 10 states have internal predecessors, (1290), 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 21:29:35,377 INFO L186 Difference]: Start difference. First operand has 145 places, 158 transitions, 685 flow. Second operand 9 states and 1029 transitions. [2022-07-19 21:29:35,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 215 transitions, 1162 flow [2022-07-19 21:29:35,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 215 transitions, 1130 flow, removed 16 selfloop flow, removed 2 redundant places. [2022-07-19 21:29:35,386 INFO L242 Difference]: Finished difference. Result has 152 places, 177 transitions, 950 flow [2022-07-19 21:29:35,387 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=950, PETRI_PLACES=152, PETRI_TRANSITIONS=177} [2022-07-19 21:29:35,387 INFO L279 CegarLoopForPetriNet]: 109 programPoint places, 43 predicate places. [2022-07-19 21:29:35,387 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 177 transitions, 950 flow [2022-07-19 21:29:35,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 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 21:29:35,388 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:35,388 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:29:35,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 21:29:35,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:29:35,599 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:35,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:35,600 INFO L85 PathProgramCache]: Analyzing trace with hash 367074341, now seen corresponding path program 5 times [2022-07-19 21:29:35,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:35,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16385918] [2022-07-19 21:29:35,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:35,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:35,752 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:29:35,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:35,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16385918] [2022-07-19 21:29:35,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16385918] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:29:35,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042536429] [2022-07-19 21:29:35,752 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-19 21:29:35,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:29:35,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:29:35,753 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:29:35,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 21:29:35,819 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-07-19 21:29:35,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:29:35,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-19 21:29:35,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:29:35,946 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:29:35,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:29:36,080 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:29:36,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042536429] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:29:36,080 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:29:36,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2022-07-19 21:29:36,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278488303] [2022-07-19 21:29:36,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:29:36,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:29:36,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:36,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:29:36,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:29:36,084 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 129 [2022-07-19 21:29:36,085 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 177 transitions, 950 flow. Second operand has 9 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 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 21:29:36,085 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:36,085 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 129 [2022-07-19 21:29:36,085 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:37,025 INFO L129 PetriNetUnfolder]: 1860/8486 cut-off events. [2022-07-19 21:29:37,025 INFO L130 PetriNetUnfolder]: For 11019/12039 co-relation queries the response was YES. [2022-07-19 21:29:37,071 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21169 conditions, 8486 events. 1860/8486 cut-off events. For 11019/12039 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 95589 event pairs, 152 based on Foata normal form. 197/8067 useless extension candidates. Maximal degree in co-relation 20985. Up to 1237 conditions per place. [2022-07-19 21:29:37,110 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 83 selfloop transitions, 47 changer transitions 4/234 dead transitions. [2022-07-19 21:29:37,110 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 234 transitions, 1513 flow [2022-07-19 21:29:37,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:29:37,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:29:37,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1029 transitions. [2022-07-19 21:29:37,113 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8863049095607235 [2022-07-19 21:29:37,113 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1029 transitions. [2022-07-19 21:29:37,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1029 transitions. [2022-07-19 21:29:37,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:37,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1029 transitions. [2022-07-19 21:29:37,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 114.33333333333333) internal successors, (1029), 9 states have internal predecessors, (1029), 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 21:29:37,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 129.0) internal successors, (1290), 10 states have internal predecessors, (1290), 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 21:29:37,117 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 129.0) internal successors, (1290), 10 states have internal predecessors, (1290), 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 21:29:37,118 INFO L186 Difference]: Start difference. First operand has 152 places, 177 transitions, 950 flow. Second operand 9 states and 1029 transitions. [2022-07-19 21:29:37,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 234 transitions, 1513 flow [2022-07-19 21:29:37,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 234 transitions, 1325 flow, removed 81 selfloop flow, removed 4 redundant places. [2022-07-19 21:29:37,136 INFO L242 Difference]: Finished difference. Result has 157 places, 196 transitions, 1083 flow [2022-07-19 21:29:37,136 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1083, PETRI_PLACES=157, PETRI_TRANSITIONS=196} [2022-07-19 21:29:37,136 INFO L279 CegarLoopForPetriNet]: 109 programPoint places, 48 predicate places. [2022-07-19 21:29:37,137 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 196 transitions, 1083 flow [2022-07-19 21:29:37,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 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 21:29:37,137 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:37,137 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:29:37,154 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-19 21:29:37,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-19 21:29:37,351 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:37,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:37,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1243930089, now seen corresponding path program 6 times [2022-07-19 21:29:37,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:37,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54443868] [2022-07-19 21:29:37,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:37,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:37,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:37,431 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:29:37,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:37,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54443868] [2022-07-19 21:29:37,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54443868] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:29:37,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160618429] [2022-07-19 21:29:37,432 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-19 21:29:37,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:29:37,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:29:37,433 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:29:37,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 21:29:37,525 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-07-19 21:29:37,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:29:37,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-19 21:29:37,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:29:37,684 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:29:37,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:29:37,859 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:29:37,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160618429] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:29:37,859 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:29:37,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 10 [2022-07-19 21:29:37,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061173372] [2022-07-19 21:29:37,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:29:37,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:29:37,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:37,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:29:37,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:29:37,863 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 129 [2022-07-19 21:29:37,864 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 196 transitions, 1083 flow. Second operand has 10 states, 10 states have (on average 107.7) internal successors, (1077), 10 states have internal predecessors, (1077), 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 21:29:37,865 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:37,865 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 129 [2022-07-19 21:29:37,865 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:38,789 INFO L129 PetriNetUnfolder]: 1721/7848 cut-off events. [2022-07-19 21:29:38,790 INFO L130 PetriNetUnfolder]: For 10858/12057 co-relation queries the response was YES. [2022-07-19 21:29:38,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19613 conditions, 7848 events. 1721/7848 cut-off events. For 10858/12057 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 87030 event pairs, 90 based on Foata normal form. 579/7889 useless extension candidates. Maximal degree in co-relation 19434. Up to 676 conditions per place. [2022-07-19 21:29:38,874 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 44 selfloop transitions, 102 changer transitions 4/250 dead transitions. [2022-07-19 21:29:38,874 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 250 transitions, 1612 flow [2022-07-19 21:29:38,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:29:38,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:29:38,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1132 transitions. [2022-07-19 21:29:38,877 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8775193798449612 [2022-07-19 21:29:38,877 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1132 transitions. [2022-07-19 21:29:38,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1132 transitions. [2022-07-19 21:29:38,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:38,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1132 transitions. [2022-07-19 21:29:38,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 113.2) internal successors, (1132), 10 states have internal predecessors, (1132), 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 21:29:38,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 129.0) internal successors, (1419), 11 states have internal predecessors, (1419), 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 21:29:38,881 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 129.0) internal successors, (1419), 11 states have internal predecessors, (1419), 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 21:29:38,882 INFO L186 Difference]: Start difference. First operand has 157 places, 196 transitions, 1083 flow. Second operand 10 states and 1132 transitions. [2022-07-19 21:29:38,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 250 transitions, 1612 flow [2022-07-19 21:29:38,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 250 transitions, 1584 flow, removed 14 selfloop flow, removed 2 redundant places. [2022-07-19 21:29:38,894 INFO L242 Difference]: Finished difference. Result has 165 places, 212 transitions, 1416 flow [2022-07-19 21:29:38,894 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1416, PETRI_PLACES=165, PETRI_TRANSITIONS=212} [2022-07-19 21:29:38,895 INFO L279 CegarLoopForPetriNet]: 109 programPoint places, 56 predicate places. [2022-07-19 21:29:38,895 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 212 transitions, 1416 flow [2022-07-19 21:29:38,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 107.7) internal successors, (1077), 10 states have internal predecessors, (1077), 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 21:29:38,895 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:38,896 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:29:38,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 21:29:39,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:29:39,112 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:39,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:39,112 INFO L85 PathProgramCache]: Analyzing trace with hash -797799974, now seen corresponding path program 7 times [2022-07-19 21:29:39,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:39,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498485569] [2022-07-19 21:29:39,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:39,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:39,144 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-19 21:29:39,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:39,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498485569] [2022-07-19 21:29:39,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498485569] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:39,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:39,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:29:39,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168590918] [2022-07-19 21:29:39,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:39,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:29:39,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:39,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:29:39,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:29:39,146 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 129 [2022-07-19 21:29:39,147 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 212 transitions, 1416 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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 21:29:39,147 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:39,147 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 129 [2022-07-19 21:29:39,147 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:39,679 INFO L129 PetriNetUnfolder]: 1189/5823 cut-off events. [2022-07-19 21:29:39,679 INFO L130 PetriNetUnfolder]: For 10894/12067 co-relation queries the response was YES. [2022-07-19 21:29:39,718 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15518 conditions, 5823 events. 1189/5823 cut-off events. For 10894/12067 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 61243 event pairs, 64 based on Foata normal form. 224/5657 useless extension candidates. Maximal degree in co-relation 15432. Up to 668 conditions per place. [2022-07-19 21:29:39,740 INFO L132 encePairwiseOnDemand]: 125/129 looper letters, 38 selfloop transitions, 4 changer transitions 0/215 dead transitions. [2022-07-19 21:29:39,740 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 215 transitions, 1508 flow [2022-07-19 21:29:39,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:29:39,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:29:39,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 350 transitions. [2022-07-19 21:29:39,742 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9043927648578811 [2022-07-19 21:29:39,742 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 350 transitions. [2022-07-19 21:29:39,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 350 transitions. [2022-07-19 21:29:39,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:39,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 350 transitions. [2022-07-19 21:29:39,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 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 21:29:39,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 21:29:39,744 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 21:29:39,744 INFO L186 Difference]: Start difference. First operand has 165 places, 212 transitions, 1416 flow. Second operand 3 states and 350 transitions. [2022-07-19 21:29:39,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 215 transitions, 1508 flow [2022-07-19 21:29:39,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 215 transitions, 1443 flow, removed 10 selfloop flow, removed 5 redundant places. [2022-07-19 21:29:39,759 INFO L242 Difference]: Finished difference. Result has 162 places, 213 transitions, 1373 flow [2022-07-19 21:29:39,759 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=1351, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1373, PETRI_PLACES=162, PETRI_TRANSITIONS=213} [2022-07-19 21:29:39,760 INFO L279 CegarLoopForPetriNet]: 109 programPoint places, 53 predicate places. [2022-07-19 21:29:39,760 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 213 transitions, 1373 flow [2022-07-19 21:29:39,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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 21:29:39,760 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:39,760 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:29:39,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 21:29:39,761 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:39,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:39,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1129898811, now seen corresponding path program 8 times [2022-07-19 21:29:39,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:39,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035337093] [2022-07-19 21:29:39,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:39,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:39,784 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-19 21:29:39,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:39,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035337093] [2022-07-19 21:29:39,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035337093] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:39,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:39,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:29:39,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191124856] [2022-07-19 21:29:39,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:39,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:29:39,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:39,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:29:39,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:29:39,786 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 129 [2022-07-19 21:29:39,787 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 213 transitions, 1373 flow. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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 21:29:39,787 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:39,787 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 129 [2022-07-19 21:29:39,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:40,839 INFO L129 PetriNetUnfolder]: 2696/10391 cut-off events. [2022-07-19 21:29:40,839 INFO L130 PetriNetUnfolder]: For 21215/22156 co-relation queries the response was YES. [2022-07-19 21:29:40,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29359 conditions, 10391 events. 2696/10391 cut-off events. For 21215/22156 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 120378 event pairs, 318 based on Foata normal form. 269/9745 useless extension candidates. Maximal degree in co-relation 24447. Up to 1637 conditions per place. [2022-07-19 21:29:40,931 INFO L132 encePairwiseOnDemand]: 125/129 looper letters, 60 selfloop transitions, 4 changer transitions 0/238 dead transitions. [2022-07-19 21:29:40,932 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 238 transitions, 1748 flow [2022-07-19 21:29:40,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:29:40,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:29:40,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 352 transitions. [2022-07-19 21:29:40,934 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9095607235142119 [2022-07-19 21:29:40,934 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 352 transitions. [2022-07-19 21:29:40,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 352 transitions. [2022-07-19 21:29:40,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:40,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 352 transitions. [2022-07-19 21:29:40,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:40,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 21:29:40,936 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 21:29:40,936 INFO L186 Difference]: Start difference. First operand has 162 places, 213 transitions, 1373 flow. Second operand 3 states and 352 transitions. [2022-07-19 21:29:40,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 238 transitions, 1748 flow [2022-07-19 21:29:40,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 238 transitions, 1738 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-07-19 21:29:40,958 INFO L242 Difference]: Finished difference. Result has 164 places, 214 transitions, 1385 flow [2022-07-19 21:29:40,959 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=1363, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1385, PETRI_PLACES=164, PETRI_TRANSITIONS=214} [2022-07-19 21:29:40,959 INFO L279 CegarLoopForPetriNet]: 109 programPoint places, 55 predicate places. [2022-07-19 21:29:40,959 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 214 transitions, 1385 flow [2022-07-19 21:29:40,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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 21:29:40,960 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:40,960 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:29:40,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 21:29:40,960 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:40,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:40,961 INFO L85 PathProgramCache]: Analyzing trace with hash -15691800, now seen corresponding path program 9 times [2022-07-19 21:29:40,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:40,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027426114] [2022-07-19 21:29:40,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:40,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:40,984 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-19 21:29:40,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:40,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027426114] [2022-07-19 21:29:40,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027426114] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:40,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:40,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:29:40,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151198953] [2022-07-19 21:29:40,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:40,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:29:40,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:40,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:29:40,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:29:40,986 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 129 [2022-07-19 21:29:40,987 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 214 transitions, 1385 flow. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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 21:29:40,987 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:40,987 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 129 [2022-07-19 21:29:40,987 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:41,663 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([333] L44-->L50: Formula: (= v_~pos~0_23 (+ v_~pos~0_24 1)) InVars {~pos~0=v_~pos~0_24} OutVars{thread1Thread1of1ForFork0_#t~post1=|v_thread1Thread1of1ForFork0_#t~post1_1|, ~pos~0=v_~pos~0_23} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_#t~post1, ~pos~0][112], [Black: 171#(and (<= ~pos~0 1) (<= 1 ~pos~0)), Black: 170#(and (<= 2 ~pos~0) (<= ~pos~0 2)), 2853#(and (<= ~pos~0 1) (<= 1 ~pos~0)), Black: 133#(= (+ (- 1) ~g2~0) 0), 4207#(not (= (+ ~g3~0 (* (- 256) (div ~g3~0 256))) 0)), Black: 138#(= (+ (- 1) ~g1~0) 0), 167#true, 156#(<= ~d2~0 (* (div ~d2~0 256) 256)), 2182#(and (<= ~pos~0 1) (<= 1 ~pos~0)), 838#true, 3524#(and (<= ~pos~0 1) (<= 1 ~pos~0)), Black: 149#(and (not (<= (+ (div ~d1~0 256) 1) 0)) (<= ~d1~0 (* 256 (div ~d1~0 256)))), 128#(= (+ (- 1) ~g3~0) 0), 58#L50true, 68#L121-4true, Black: 3523#(= ~pos~0 0), Black: 155#(not (= (+ (* (- 256) (div ~d2~0 256)) ~d2~0) 0)), Black: 841#(and (<= ~pos~0 1) (<= 1 ~pos~0)), Black: 4193#true, 162#(not (= (+ ~d3~0 (* (div ~d3~0 256) (- 256))) 0)), Black: 163#(and (<= 0 ~d3~0) (<= ~d3~0 (* (div ~d3~0 256) 256))), 70#L72true, 148#(not (= (+ ~d1~0 (* (- 256) (div ~d1~0 256))) 0)), Black: 4199#true, 52#L87true, 4201#(not (= (+ ~g2~0 (* (- 256) (div ~g2~0 256))) 0)), 143#(= (+ (- 1) ~d3~0) 0), 1513#(and (<= ~pos~0 1) (<= 1 ~pos~0))]) [2022-07-19 21:29:41,664 INFO L384 tUnfolder$Statistics]: this new event has 94 ancestors and is cut-off event [2022-07-19 21:29:41,664 INFO L387 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-07-19 21:29:41,664 INFO L387 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-07-19 21:29:41,664 INFO L387 tUnfolder$Statistics]: existing Event has 94 ancestors and is cut-off event [2022-07-19 21:29:41,970 INFO L129 PetriNetUnfolder]: 2421/9106 cut-off events. [2022-07-19 21:29:41,970 INFO L130 PetriNetUnfolder]: For 19412/20108 co-relation queries the response was YES. [2022-07-19 21:29:42,021 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26653 conditions, 9106 events. 2421/9106 cut-off events. For 19412/20108 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 103182 event pairs, 313 based on Foata normal form. 262/8525 useless extension candidates. Maximal degree in co-relation 19967. Up to 1625 conditions per place. [2022-07-19 21:29:42,027 INFO L132 encePairwiseOnDemand]: 125/129 looper letters, 0 selfloop transitions, 0 changer transitions 233/233 dead transitions. [2022-07-19 21:29:42,027 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 233 transitions, 1746 flow [2022-07-19 21:29:42,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:29:42,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:29:42,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 352 transitions. [2022-07-19 21:29:42,029 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9095607235142119 [2022-07-19 21:29:42,029 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 352 transitions. [2022-07-19 21:29:42,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 352 transitions. [2022-07-19 21:29:42,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:42,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 352 transitions. [2022-07-19 21:29:42,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:42,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 21:29:42,031 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 21:29:42,031 INFO L186 Difference]: Start difference. First operand has 164 places, 214 transitions, 1385 flow. Second operand 3 states and 352 transitions. [2022-07-19 21:29:42,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 233 transitions, 1746 flow [2022-07-19 21:29:42,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 233 transitions, 1687 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-07-19 21:29:42,054 INFO L242 Difference]: Finished difference. Result has 157 places, 0 transitions, 0 flow [2022-07-19 21:29:42,054 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=1324, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=157, PETRI_TRANSITIONS=0} [2022-07-19 21:29:42,054 INFO L279 CegarLoopForPetriNet]: 109 programPoint places, 48 predicate places. [2022-07-19 21:29:42,055 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 0 transitions, 0 flow [2022-07-19 21:29:42,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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 21:29:42,057 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-07-19 21:29:42,057 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-07-19 21:29:42,057 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-19 21:29:42,057 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-07-19 21:29:42,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 21:29:42,058 INFO L356 BasicCegarLoop]: Path program histogram: [9, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:29:42,060 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-19 21:29:42,060 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 21:29:42,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:29:42 BasicIcfg [2022-07-19 21:29:42,064 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 21:29:42,064 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 21:29:42,064 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 21:29:42,064 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 21:29:42,065 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:29:28" (3/4) ... [2022-07-19 21:29:42,066 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 21:29:42,070 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-07-19 21:29:42,071 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-07-19 21:29:42,071 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-07-19 21:29:42,073 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-07-19 21:29:42,073 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-19 21:29:42,074 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 21:29:42,074 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 21:29:42,093 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 21:29:42,093 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 21:29:42,094 INFO L158 Benchmark]: Toolchain (without parser) took 14353.46ms. Allocated memory was 98.6MB in the beginning and 2.4GB in the end (delta: 2.3GB). Free memory was 62.7MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 402.3MB. Max. memory is 16.1GB. [2022-07-19 21:29:42,094 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 98.6MB. Free memory was 68.4MB in the beginning and 68.4MB in the end (delta: 23.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:29:42,094 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.25ms. Allocated memory is still 98.6MB. Free memory was 62.5MB in the beginning and 72.3MB in the end (delta: -9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 21:29:42,095 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.77ms. Allocated memory is still 98.6MB. Free memory was 72.3MB in the beginning and 70.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:29:42,095 INFO L158 Benchmark]: Boogie Preprocessor took 19.36ms. Allocated memory is still 98.6MB. Free memory was 70.8MB in the beginning and 69.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:29:42,095 INFO L158 Benchmark]: RCFGBuilder took 255.74ms. Allocated memory is still 98.6MB. Free memory was 69.3MB in the beginning and 55.6MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-19 21:29:42,095 INFO L158 Benchmark]: TraceAbstraction took 13830.60ms. Allocated memory was 98.6MB in the beginning and 2.4GB in the end (delta: 2.3GB). Free memory was 54.6MB in the beginning and 2.0GB in the end (delta: -2.0GB). Peak memory consumption was 901.9MB. Max. memory is 16.1GB. [2022-07-19 21:29:42,096 INFO L158 Benchmark]: Witness Printer took 29.43ms. Allocated memory is still 2.4GB. Free memory was 2.0GB in the beginning and 2.0GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:29:42,097 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 98.6MB. Free memory was 68.4MB in the beginning and 68.4MB in the end (delta: 23.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 189.25ms. Allocated memory is still 98.6MB. Free memory was 62.5MB in the beginning and 72.3MB in the end (delta: -9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.77ms. Allocated memory is still 98.6MB. Free memory was 72.3MB in the beginning and 70.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.36ms. Allocated memory is still 98.6MB. Free memory was 70.8MB in the beginning and 69.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 255.74ms. Allocated memory is still 98.6MB. Free memory was 69.3MB in the beginning and 55.6MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 13830.60ms. Allocated memory was 98.6MB in the beginning and 2.4GB in the end (delta: 2.3GB). Free memory was 54.6MB in the beginning and 2.0GB in the end (delta: -2.0GB). Peak memory consumption was 901.9MB. Max. memory is 16.1GB. * Witness Printer took 29.43ms. Allocated memory is still 2.4GB. Free memory was 2.0GB in the beginning and 2.0GB 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: 127]: 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 7 procedures, 156 locations, 4 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: 13.7s, OverallIterations: 16, TraceHistogramMax: 3, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 8.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 274 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 274 mSDsluCounter, 480 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1162 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2145 IncrementalHoareTripleChecker+Invalid, 2212 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 118 mSDtfsCounter, 2145 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1420 GetRequests, 1306 SyntacticMatches, 50 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1416occurred in iteration=13, InterpolantAutomatonStates: 84, 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 2297 NumberOfCodeBlocks, 2262 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 2929 ConstructedInterpolants, 0 QuantifiedInterpolants, 10205 SizeOfPredicates, 12 NumberOfNonLiveVariables, 1449 ConjunctsInSsa, 114 ConjunctsInUnsatCore, 28 InterpolantComputations, 10 PerfectInterpolantSequences, 135/438 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 21:29:42,119 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