./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-array-int-trans.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 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:38:26,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:38:26,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:38:26,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:38:26,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:38:26,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:38:26,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:38:26,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:38:26,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:38:26,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:38:26,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:38:26,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:38:26,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:38:26,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:38:26,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:38:26,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:38:26,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:38:26,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:38:26,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:38:26,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:38:26,880 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:38:26,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:38:26,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:38:26,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:38:26,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:38:26,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:38:26,890 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:38:26,890 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:38:26,891 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:38:26,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:38:26,892 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:38:26,893 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:38:26,894 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:38:26,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:38:26,895 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:38:26,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:38:26,896 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:38:26,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:38:26,897 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:38:26,897 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:38:26,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:38:26,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:38:26,900 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:38:26,927 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:38:26,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:38:26,928 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:38:26,928 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:38:26,928 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:38:26,928 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:38:26,929 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:38:26,929 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:38:26,929 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:38:26,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:38:26,931 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:38:26,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:38:26,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:38:26,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:38:26,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:38:26,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:38:26,932 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:38:26,932 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:38:26,932 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:38:26,932 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:38:26,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:38:26,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:38:26,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:38:26,934 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:38:26,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:38:26,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:38:26,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:38:26,935 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:38:26,935 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:38:26,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:38:26,935 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:38:26,935 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:38:26,936 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:38:26,936 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 [2022-07-22 21:38:27,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:38:27,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:38:27,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:38:27,174 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:38:27,175 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:38:27,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2022-07-22 21:38:27,241 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5424b1bad/b1bee08238cb4e4090049d3181244452/FLAG8c2d0ceb6 [2022-07-22 21:38:27,610 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:38:27,611 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2022-07-22 21:38:27,621 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5424b1bad/b1bee08238cb4e4090049d3181244452/FLAG8c2d0ceb6 [2022-07-22 21:38:27,630 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5424b1bad/b1bee08238cb4e4090049d3181244452 [2022-07-22 21:38:27,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:38:27,633 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:38:27,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:38:27,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:38:27,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:38:27,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:38:27" (1/1) ... [2022-07-22 21:38:27,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bd6c37c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:38:27, skipping insertion in model container [2022-07-22 21:38:27,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:38:27" (1/1) ... [2022-07-22 21:38:27,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:38:27,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:38:27,813 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c[2728,2741] [2022-07-22 21:38:27,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:38:27,826 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:38:27,845 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c[2728,2741] [2022-07-22 21:38:27,849 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:38:27,860 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:38:27,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:38:27 WrapperNode [2022-07-22 21:38:27,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:38:27,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:38:27,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:38:27,862 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:38:27,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:38:27" (1/1) ... [2022-07-22 21:38:27,874 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:38:27" (1/1) ... [2022-07-22 21:38:27,897 INFO L137 Inliner]: procedures = 26, calls = 49, calls flagged for inlining = 13, calls inlined = 21, statements flattened = 277 [2022-07-22 21:38:27,897 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:38:27,898 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:38:27,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:38:27,898 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:38:27,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:38:27" (1/1) ... [2022-07-22 21:38:27,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:38:27" (1/1) ... [2022-07-22 21:38:27,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:38:27" (1/1) ... [2022-07-22 21:38:27,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:38:27" (1/1) ... [2022-07-22 21:38:27,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:38:27" (1/1) ... [2022-07-22 21:38:27,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:38:27" (1/1) ... [2022-07-22 21:38:27,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:38:27" (1/1) ... [2022-07-22 21:38:27,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:38:27,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:38:27,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:38:27,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:38:27,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:38:27" (1/1) ... [2022-07-22 21:38:27,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:38:27,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:38:27,986 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) [2022-07-22 21:38:27,991 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 [2022-07-22 21:38:28,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:38:28,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:38:28,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:38:28,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:38:28,013 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-22 21:38:28,013 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-22 21:38:28,014 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-22 21:38:28,014 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-22 21:38:28,014 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-22 21:38:28,014 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-22 21:38:28,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:38:28,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 21:38:28,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:38:28,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:38:28,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:38:28,016 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:38:28,102 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:38:28,104 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:38:28,445 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:38:28,460 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:38:28,463 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-22 21:38:28,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:38:28 BoogieIcfgContainer [2022-07-22 21:38:28,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:38:28,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:38:28,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:38:28,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:38:28,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:38:27" (1/3) ... [2022-07-22 21:38:28,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a1b7b8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:38:28, skipping insertion in model container [2022-07-22 21:38:28,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:38:27" (2/3) ... [2022-07-22 21:38:28,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a1b7b8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:38:28, skipping insertion in model container [2022-07-22 21:38:28,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:38:28" (3/3) ... [2022-07-22 21:38:28,475 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2022-07-22 21:38:28,480 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:38:28,487 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:38:28,487 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:38:28,487 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:38:28,564 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-22 21:38:28,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 332 places, 350 transitions, 724 flow [2022-07-22 21:38:28,721 INFO L129 PetriNetUnfolder]: 28/347 cut-off events. [2022-07-22 21:38:28,722 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-22 21:38:28,737 INFO L84 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 347 events. 28/347 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 584 event pairs, 0 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 269. Up to 3 conditions per place. [2022-07-22 21:38:28,737 INFO L82 GeneralOperation]: Start removeDead. Operand has 332 places, 350 transitions, 724 flow [2022-07-22 21:38:28,744 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 318 places, 336 transitions, 690 flow [2022-07-22 21:38:28,753 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:38:28,760 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@285df74c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@16b7b763 [2022-07-22 21:38:28,762 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-22 21:38:28,829 INFO L129 PetriNetUnfolder]: 27/331 cut-off events. [2022-07-22 21:38:28,830 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-22 21:38:28,832 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:38:28,832 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:38:28,833 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)] === [2022-07-22 21:38:28,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:38:28,841 INFO L85 PathProgramCache]: Analyzing trace with hash -36079225, now seen corresponding path program 1 times [2022-07-22 21:38:28,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:38:28,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134173007] [2022-07-22 21:38:28,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:38:28,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:38:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:38:29,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:38:29,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:38:29,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134173007] [2022-07-22 21:38:29,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134173007] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:38:29,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:38:29,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:38:29,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147750587] [2022-07-22 21:38:29,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:38:29,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 21:38:29,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:38:29,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 21:38:29,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 21:38:29,177 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 350 [2022-07-22 21:38:29,181 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 336 transitions, 690 flow. Second operand has 2 states, 2 states have (on average 328.0) internal successors, (656), 2 states have internal predecessors, (656), 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) [2022-07-22 21:38:29,181 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:38:29,181 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 350 [2022-07-22 21:38:29,182 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:38:29,248 INFO L129 PetriNetUnfolder]: 9/317 cut-off events. [2022-07-22 21:38:29,248 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-07-22 21:38:29,250 INFO L84 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 317 events. 9/317 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 561 event pairs, 0 based on Foata normal form. 25/320 useless extension candidates. Maximal degree in co-relation 256. Up to 7 conditions per place. [2022-07-22 21:38:29,252 INFO L132 encePairwiseOnDemand]: 331/350 looper letters, 6 selfloop transitions, 0 changer transitions 7/317 dead transitions. [2022-07-22 21:38:29,253 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 317 transitions, 664 flow [2022-07-22 21:38:29,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 21:38:29,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-22 21:38:29,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 673 transitions. [2022-07-22 21:38:29,267 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9614285714285714 [2022-07-22 21:38:29,267 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 673 transitions. [2022-07-22 21:38:29,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 673 transitions. [2022-07-22 21:38:29,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:38:29,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 673 transitions. [2022-07-22 21:38:29,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 336.5) internal successors, (673), 2 states have internal predecessors, (673), 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) [2022-07-22 21:38:29,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 350.0) internal successors, (1050), 3 states have internal predecessors, (1050), 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) [2022-07-22 21:38:29,289 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 350.0) internal successors, (1050), 3 states have internal predecessors, (1050), 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) [2022-07-22 21:38:29,290 INFO L186 Difference]: Start difference. First operand has 318 places, 336 transitions, 690 flow. Second operand 2 states and 673 transitions. [2022-07-22 21:38:29,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 317 transitions, 664 flow [2022-07-22 21:38:29,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 317 transitions, 652 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-22 21:38:29,301 INFO L242 Difference]: Finished difference. Result has 313 places, 310 transitions, 626 flow [2022-07-22 21:38:29,303 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=626, PETRI_PLACES=313, PETRI_TRANSITIONS=310} [2022-07-22 21:38:29,306 INFO L279 CegarLoopForPetriNet]: 318 programPoint places, -5 predicate places. [2022-07-22 21:38:29,306 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 310 transitions, 626 flow [2022-07-22 21:38:29,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 328.0) internal successors, (656), 2 states have internal predecessors, (656), 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) [2022-07-22 21:38:29,307 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:38:29,307 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:38:29,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:38:29,308 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)] === [2022-07-22 21:38:29,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:38:29,309 INFO L85 PathProgramCache]: Analyzing trace with hash -330795675, now seen corresponding path program 1 times [2022-07-22 21:38:29,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:38:29,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580479352] [2022-07-22 21:38:29,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:38:29,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:38:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:38:30,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:38:30,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:38:30,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580479352] [2022-07-22 21:38:30,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580479352] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:38:30,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:38:30,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 21:38:30,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494414788] [2022-07-22 21:38:30,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:38:30,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 21:38:30,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:38:30,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 21:38:30,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-07-22 21:38:30,014 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 350 [2022-07-22 21:38:30,019 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 310 transitions, 626 flow. Second operand has 20 states, 20 states have (on average 243.3) internal successors, (4866), 20 states have internal predecessors, (4866), 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) [2022-07-22 21:38:30,020 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:38:30,020 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 350 [2022-07-22 21:38:30,020 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:38:31,640 INFO L129 PetriNetUnfolder]: 687/5537 cut-off events. [2022-07-22 21:38:31,640 INFO L130 PetriNetUnfolder]: For 81/81 co-relation queries the response was YES. [2022-07-22 21:38:31,669 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6571 conditions, 5537 events. 687/5537 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 56816 event pairs, 287 based on Foata normal form. 1/4936 useless extension candidates. Maximal degree in co-relation 6568. Up to 391 conditions per place. [2022-07-22 21:38:31,688 INFO L132 encePairwiseOnDemand]: 324/350 looper letters, 127 selfloop transitions, 26 changer transitions 4/384 dead transitions. [2022-07-22 21:38:31,689 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 384 transitions, 1101 flow [2022-07-22 21:38:31,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-22 21:38:31,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-22 21:38:31,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5918 transitions. [2022-07-22 21:38:31,702 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7045238095238096 [2022-07-22 21:38:31,702 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5918 transitions. [2022-07-22 21:38:31,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5918 transitions. [2022-07-22 21:38:31,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:38:31,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5918 transitions. [2022-07-22 21:38:31,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 246.58333333333334) internal successors, (5918), 24 states have internal predecessors, (5918), 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) [2022-07-22 21:38:31,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 350.0) internal successors, (8750), 25 states have internal predecessors, (8750), 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) [2022-07-22 21:38:31,741 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 350.0) internal successors, (8750), 25 states have internal predecessors, (8750), 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) [2022-07-22 21:38:31,741 INFO L186 Difference]: Start difference. First operand has 313 places, 310 transitions, 626 flow. Second operand 24 states and 5918 transitions. [2022-07-22 21:38:31,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 384 transitions, 1101 flow [2022-07-22 21:38:31,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 384 transitions, 1101 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:38:31,750 INFO L242 Difference]: Finished difference. Result has 336 places, 320 transitions, 734 flow [2022-07-22 21:38:31,750 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=734, PETRI_PLACES=336, PETRI_TRANSITIONS=320} [2022-07-22 21:38:31,751 INFO L279 CegarLoopForPetriNet]: 318 programPoint places, 18 predicate places. [2022-07-22 21:38:31,751 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 320 transitions, 734 flow [2022-07-22 21:38:31,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 243.3) internal successors, (4866), 20 states have internal predecessors, (4866), 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) [2022-07-22 21:38:31,754 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:38:31,754 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:38:31,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:38:31,754 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)] === [2022-07-22 21:38:31,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:38:31,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1144664097, now seen corresponding path program 2 times [2022-07-22 21:38:31,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:38:31,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58597452] [2022-07-22 21:38:31,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:38:31,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:38:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:38:31,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:38:31,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:38:31,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58597452] [2022-07-22 21:38:31,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58597452] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:38:31,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:38:31,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-22 21:38:31,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972889100] [2022-07-22 21:38:31,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:38:31,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 21:38:31,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:38:32,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 21:38:32,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-22 21:38:32,005 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 350 [2022-07-22 21:38:32,008 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 320 transitions, 734 flow. Second operand has 14 states, 14 states have (on average 248.5) internal successors, (3479), 14 states have internal predecessors, (3479), 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) [2022-07-22 21:38:32,008 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:38:32,008 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 350 [2022-07-22 21:38:32,008 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:38:34,004 INFO L129 PetriNetUnfolder]: 1283/11290 cut-off events. [2022-07-22 21:38:34,004 INFO L130 PetriNetUnfolder]: For 729/751 co-relation queries the response was YES. [2022-07-22 21:38:34,064 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13869 conditions, 11290 events. 1283/11290 cut-off events. For 729/751 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 137834 event pairs, 693 based on Foata normal form. 3/10078 useless extension candidates. Maximal degree in co-relation 13858. Up to 657 conditions per place. [2022-07-22 21:38:34,148 INFO L132 encePairwiseOnDemand]: 328/350 looper letters, 151 selfloop transitions, 23 changer transitions 6/414 dead transitions. [2022-07-22 21:38:34,148 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 414 transitions, 1375 flow [2022-07-22 21:38:34,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 21:38:34,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-22 21:38:34,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5043 transitions. [2022-07-22 21:38:34,163 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7204285714285714 [2022-07-22 21:38:34,163 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 5043 transitions. [2022-07-22 21:38:34,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 5043 transitions. [2022-07-22 21:38:34,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:38:34,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 5043 transitions. [2022-07-22 21:38:34,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 252.15) internal successors, (5043), 20 states have internal predecessors, (5043), 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) [2022-07-22 21:38:34,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 350.0) internal successors, (7350), 21 states have internal predecessors, (7350), 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) [2022-07-22 21:38:34,187 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 350.0) internal successors, (7350), 21 states have internal predecessors, (7350), 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) [2022-07-22 21:38:34,188 INFO L186 Difference]: Start difference. First operand has 336 places, 320 transitions, 734 flow. Second operand 20 states and 5043 transitions. [2022-07-22 21:38:34,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 414 transitions, 1375 flow [2022-07-22 21:38:34,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 414 transitions, 1337 flow, removed 5 selfloop flow, removed 13 redundant places. [2022-07-22 21:38:34,199 INFO L242 Difference]: Finished difference. Result has 351 places, 334 transitions, 850 flow [2022-07-22 21:38:34,200 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=850, PETRI_PLACES=351, PETRI_TRANSITIONS=334} [2022-07-22 21:38:34,200 INFO L279 CegarLoopForPetriNet]: 318 programPoint places, 33 predicate places. [2022-07-22 21:38:34,201 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 334 transitions, 850 flow [2022-07-22 21:38:34,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 248.5) internal successors, (3479), 14 states have internal predecessors, (3479), 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) [2022-07-22 21:38:34,202 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:38:34,202 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:38:34,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:38:34,203 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)] === [2022-07-22 21:38:34,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:38:34,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1845871625, now seen corresponding path program 1 times [2022-07-22 21:38:34,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:38:34,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195634849] [2022-07-22 21:38:34,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:38:34,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:38:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:38:34,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:38:34,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:38:34,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195634849] [2022-07-22 21:38:34,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195634849] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:38:34,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:38:34,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-22 21:38:34,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088496886] [2022-07-22 21:38:34,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:38:34,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 21:38:34,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:38:34,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 21:38:34,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-22 21:38:34,424 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 350 [2022-07-22 21:38:34,427 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 334 transitions, 850 flow. Second operand has 14 states, 14 states have (on average 248.78571428571428) internal successors, (3483), 14 states have internal predecessors, (3483), 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) [2022-07-22 21:38:34,427 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:38:34,427 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 350 [2022-07-22 21:38:34,427 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:38:36,462 INFO L129 PetriNetUnfolder]: 1283/10402 cut-off events. [2022-07-22 21:38:36,463 INFO L130 PetriNetUnfolder]: For 1140/1264 co-relation queries the response was YES. [2022-07-22 21:38:36,523 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13282 conditions, 10402 events. 1283/10402 cut-off events. For 1140/1264 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 124615 event pairs, 456 based on Foata normal form. 2/9238 useless extension candidates. Maximal degree in co-relation 13262. Up to 783 conditions per place. [2022-07-22 21:38:36,548 INFO L132 encePairwiseOnDemand]: 330/350 looper letters, 130 selfloop transitions, 26 changer transitions 5/394 dead transitions. [2022-07-22 21:38:36,548 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 394 transitions, 1339 flow [2022-07-22 21:38:36,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-22 21:38:36,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-22 21:38:36,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4780 transitions. [2022-07-22 21:38:36,558 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.718796992481203 [2022-07-22 21:38:36,558 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4780 transitions. [2022-07-22 21:38:36,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4780 transitions. [2022-07-22 21:38:36,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:38:36,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4780 transitions. [2022-07-22 21:38:36,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 251.57894736842104) internal successors, (4780), 19 states have internal predecessors, (4780), 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) [2022-07-22 21:38:36,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 350.0) internal successors, (7000), 20 states have internal predecessors, (7000), 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) [2022-07-22 21:38:36,588 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 350.0) internal successors, (7000), 20 states have internal predecessors, (7000), 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) [2022-07-22 21:38:36,588 INFO L186 Difference]: Start difference. First operand has 351 places, 334 transitions, 850 flow. Second operand 19 states and 4780 transitions. [2022-07-22 21:38:36,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 394 transitions, 1339 flow [2022-07-22 21:38:36,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 394 transitions, 1320 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-07-22 21:38:36,601 INFO L242 Difference]: Finished difference. Result has 368 places, 337 transitions, 919 flow [2022-07-22 21:38:36,601 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=840, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=919, PETRI_PLACES=368, PETRI_TRANSITIONS=337} [2022-07-22 21:38:36,602 INFO L279 CegarLoopForPetriNet]: 318 programPoint places, 50 predicate places. [2022-07-22 21:38:36,606 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 337 transitions, 919 flow [2022-07-22 21:38:36,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 248.78571428571428) internal successors, (3483), 14 states have internal predecessors, (3483), 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) [2022-07-22 21:38:36,608 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:38:36,608 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:38:36,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:38:36,608 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)] === [2022-07-22 21:38:36,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:38:36,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1906080933, now seen corresponding path program 1 times [2022-07-22 21:38:36,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:38:36,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004469199] [2022-07-22 21:38:36,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:38:36,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:38:36,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:38:36,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:38:36,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:38:36,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004469199] [2022-07-22 21:38:36,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004469199] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:38:36,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624671162] [2022-07-22 21:38:36,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:38:36,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:38:36,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:38:36,794 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) [2022-07-22 21:38:36,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 21:38:36,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:38:36,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 21:38:36,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:38:37,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:38:37,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:38:37,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:38:37,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624671162] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 21:38:37,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 21:38:37,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2022-07-22 21:38:37,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551128089] [2022-07-22 21:38:37,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:38:37,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 21:38:37,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:38:37,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 21:38:37,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-07-22 21:38:37,955 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 350 [2022-07-22 21:38:37,957 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 337 transitions, 919 flow. Second operand has 11 states, 11 states have (on average 272.45454545454544) internal successors, (2997), 11 states have internal predecessors, (2997), 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) [2022-07-22 21:38:37,957 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:38:37,957 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 350 [2022-07-22 21:38:37,957 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:38:40,881 INFO L129 PetriNetUnfolder]: 2616/21161 cut-off events. [2022-07-22 21:38:40,881 INFO L130 PetriNetUnfolder]: For 1937/1939 co-relation queries the response was YES. [2022-07-22 21:38:40,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26682 conditions, 21161 events. 2616/21161 cut-off events. For 1937/1939 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 292098 event pairs, 1445 based on Foata normal form. 0/18965 useless extension candidates. Maximal degree in co-relation 26658. Up to 900 conditions per place. [2022-07-22 21:38:41,052 INFO L132 encePairwiseOnDemand]: 332/350 looper letters, 163 selfloop transitions, 28 changer transitions 3/450 dead transitions. [2022-07-22 21:38:41,053 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 450 transitions, 1642 flow [2022-07-22 21:38:41,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-22 21:38:41,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-22 21:38:41,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 5273 transitions. [2022-07-22 21:38:41,064 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7929323308270677 [2022-07-22 21:38:41,064 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 5273 transitions. [2022-07-22 21:38:41,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 5273 transitions. [2022-07-22 21:38:41,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:38:41,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 5273 transitions. [2022-07-22 21:38:41,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 277.5263157894737) internal successors, (5273), 19 states have internal predecessors, (5273), 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) [2022-07-22 21:38:41,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 350.0) internal successors, (7000), 20 states have internal predecessors, (7000), 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) [2022-07-22 21:38:41,089 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 350.0) internal successors, (7000), 20 states have internal predecessors, (7000), 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) [2022-07-22 21:38:41,089 INFO L186 Difference]: Start difference. First operand has 368 places, 337 transitions, 919 flow. Second operand 19 states and 5273 transitions. [2022-07-22 21:38:41,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 450 transitions, 1642 flow [2022-07-22 21:38:41,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 450 transitions, 1576 flow, removed 6 selfloop flow, removed 14 redundant places. [2022-07-22 21:38:41,108 INFO L242 Difference]: Finished difference. Result has 376 places, 350 transitions, 1003 flow [2022-07-22 21:38:41,109 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=873, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1003, PETRI_PLACES=376, PETRI_TRANSITIONS=350} [2022-07-22 21:38:41,111 INFO L279 CegarLoopForPetriNet]: 318 programPoint places, 58 predicate places. [2022-07-22 21:38:41,111 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 350 transitions, 1003 flow [2022-07-22 21:38:41,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 272.45454545454544) internal successors, (2997), 11 states have internal predecessors, (2997), 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) [2022-07-22 21:38:41,112 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:38:41,112 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:38:41,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 21:38:41,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:38:41,331 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)] === [2022-07-22 21:38:41,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:38:41,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1964388484, now seen corresponding path program 1 times [2022-07-22 21:38:41,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:38:41,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799036231] [2022-07-22 21:38:41,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:38:41,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:38:41,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:38:41,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:38:41,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:38:41,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799036231] [2022-07-22 21:38:41,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799036231] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:38:41,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038009478] [2022-07-22 21:38:41,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:38:41,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:38:41,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:38:41,706 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) [2022-07-22 21:38:41,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 21:38:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:38:41,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-22 21:38:41,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:38:42,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 21:38:42,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:38:42,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 21:38:42,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038009478] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 21:38:42,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 21:38:42,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [16, 13] total 32 [2022-07-22 21:38:42,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986493948] [2022-07-22 21:38:42,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:38:42,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 21:38:42,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:38:42,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 21:38:42,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2022-07-22 21:38:42,669 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 350 [2022-07-22 21:38:42,671 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 350 transitions, 1003 flow. Second operand has 13 states, 13 states have (on average 249.53846153846155) internal successors, (3244), 13 states have internal predecessors, (3244), 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) [2022-07-22 21:38:42,671 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:38:42,671 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 350 [2022-07-22 21:38:42,671 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:38:45,498 INFO L129 PetriNetUnfolder]: 2115/18383 cut-off events. [2022-07-22 21:38:45,498 INFO L130 PetriNetUnfolder]: For 2343/2347 co-relation queries the response was YES. [2022-07-22 21:38:45,753 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23422 conditions, 18383 events. 2115/18383 cut-off events. For 2343/2347 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 239479 event pairs, 1162 based on Foata normal form. 8/16494 useless extension candidates. Maximal degree in co-relation 23396. Up to 948 conditions per place. [2022-07-22 21:38:45,792 INFO L132 encePairwiseOnDemand]: 328/350 looper letters, 167 selfloop transitions, 36 changer transitions 4/444 dead transitions. [2022-07-22 21:38:45,793 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 444 transitions, 1735 flow [2022-07-22 21:38:45,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 21:38:45,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-22 21:38:45,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4320 transitions. [2022-07-22 21:38:45,801 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7260504201680672 [2022-07-22 21:38:45,802 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4320 transitions. [2022-07-22 21:38:45,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4320 transitions. [2022-07-22 21:38:45,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:38:45,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4320 transitions. [2022-07-22 21:38:45,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 254.11764705882354) internal successors, (4320), 17 states have internal predecessors, (4320), 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) [2022-07-22 21:38:45,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 350.0) internal successors, (6300), 18 states have internal predecessors, (6300), 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) [2022-07-22 21:38:45,819 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 350.0) internal successors, (6300), 18 states have internal predecessors, (6300), 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) [2022-07-22 21:38:45,820 INFO L186 Difference]: Start difference. First operand has 376 places, 350 transitions, 1003 flow. Second operand 17 states and 4320 transitions. [2022-07-22 21:38:45,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 444 transitions, 1735 flow [2022-07-22 21:38:45,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 444 transitions, 1713 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-07-22 21:38:45,831 INFO L242 Difference]: Finished difference. Result has 392 places, 365 transitions, 1163 flow [2022-07-22 21:38:45,832 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1163, PETRI_PLACES=392, PETRI_TRANSITIONS=365} [2022-07-22 21:38:45,833 INFO L279 CegarLoopForPetriNet]: 318 programPoint places, 74 predicate places. [2022-07-22 21:38:45,833 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 365 transitions, 1163 flow [2022-07-22 21:38:45,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 249.53846153846155) internal successors, (3244), 13 states have internal predecessors, (3244), 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) [2022-07-22 21:38:45,834 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:38:45,834 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:38:45,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 21:38:46,055 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,SelfDestructingSolverStorable5 [2022-07-22 21:38:46,056 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)] === [2022-07-22 21:38:46,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:38:46,056 INFO L85 PathProgramCache]: Analyzing trace with hash 2020113811, now seen corresponding path program 1 times [2022-07-22 21:38:46,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:38:46,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116070090] [2022-07-22 21:38:46,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:38:46,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:38:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:38:46,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 21:38:46,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:38:46,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116070090] [2022-07-22 21:38:46,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116070090] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:38:46,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061545395] [2022-07-22 21:38:46,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:38:46,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:38:46,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:38:46,248 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) [2022-07-22 21:38:46,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 21:38:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:38:46,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 21:38:46,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:38:46,828 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 21:38:46,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:38:47,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 21:38:47,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061545395] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 21:38:47,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 21:38:47,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 29 [2022-07-22 21:38:47,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79865655] [2022-07-22 21:38:47,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:38:47,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 21:38:47,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:38:47,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 21:38:47,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2022-07-22 21:38:47,321 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 350 [2022-07-22 21:38:47,323 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 365 transitions, 1163 flow. Second operand has 11 states, 11 states have (on average 272.90909090909093) internal successors, (3002), 11 states have internal predecessors, (3002), 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) [2022-07-22 21:38:47,323 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:38:47,323 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 350 [2022-07-22 21:38:47,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:38:50,601 INFO L129 PetriNetUnfolder]: 4241/22791 cut-off events. [2022-07-22 21:38:50,601 INFO L130 PetriNetUnfolder]: For 4767/4825 co-relation queries the response was YES. [2022-07-22 21:38:50,729 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32948 conditions, 22791 events. 4241/22791 cut-off events. For 4767/4825 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 293119 event pairs, 1428 based on Foata normal form. 46/20288 useless extension candidates. Maximal degree in co-relation 32915. Up to 1606 conditions per place. [2022-07-22 21:38:50,792 INFO L132 encePairwiseOnDemand]: 332/350 looper letters, 163 selfloop transitions, 31 changer transitions 1/456 dead transitions. [2022-07-22 21:38:50,792 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 456 transitions, 1836 flow [2022-07-22 21:38:50,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-22 21:38:50,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-22 21:38:50,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4987 transitions. [2022-07-22 21:38:50,803 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7915873015873016 [2022-07-22 21:38:50,803 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4987 transitions. [2022-07-22 21:38:50,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4987 transitions. [2022-07-22 21:38:50,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:38:50,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4987 transitions. [2022-07-22 21:38:50,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 277.05555555555554) internal successors, (4987), 18 states have internal predecessors, (4987), 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) [2022-07-22 21:38:50,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 350.0) internal successors, (6650), 19 states have internal predecessors, (6650), 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) [2022-07-22 21:38:50,821 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 350.0) internal successors, (6650), 19 states have internal predecessors, (6650), 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) [2022-07-22 21:38:50,821 INFO L186 Difference]: Start difference. First operand has 392 places, 365 transitions, 1163 flow. Second operand 18 states and 4987 transitions. [2022-07-22 21:38:50,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 456 transitions, 1836 flow [2022-07-22 21:38:50,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 456 transitions, 1799 flow, removed 5 selfloop flow, removed 10 redundant places. [2022-07-22 21:38:50,850 INFO L242 Difference]: Finished difference. Result has 399 places, 371 transitions, 1213 flow [2022-07-22 21:38:50,850 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=1126, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1213, PETRI_PLACES=399, PETRI_TRANSITIONS=371} [2022-07-22 21:38:50,851 INFO L279 CegarLoopForPetriNet]: 318 programPoint places, 81 predicate places. [2022-07-22 21:38:50,852 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 371 transitions, 1213 flow [2022-07-22 21:38:50,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 272.90909090909093) internal successors, (3002), 11 states have internal predecessors, (3002), 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) [2022-07-22 21:38:50,853 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:38:50,853 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:38:50,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 21:38:51,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:38:51,076 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)] === [2022-07-22 21:38:51,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:38:51,077 INFO L85 PathProgramCache]: Analyzing trace with hash 15889408, now seen corresponding path program 1 times [2022-07-22 21:38:51,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:38:51,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809067401] [2022-07-22 21:38:51,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:38:51,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:38:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:38:51,222 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 21:38:51,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:38:51,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809067401] [2022-07-22 21:38:51,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809067401] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:38:51,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564513298] [2022-07-22 21:38:51,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:38:51,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:38:51,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:38:51,225 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) [2022-07-22 21:38:51,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 21:38:51,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:38:51,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 21:38:51,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:38:51,886 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 21:38:51,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:38:52,337 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 21:38:52,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564513298] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 21:38:52,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 21:38:52,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11, 11] total 23 [2022-07-22 21:38:52,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229839468] [2022-07-22 21:38:52,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:38:52,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 21:38:52,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:38:52,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 21:38:52,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2022-07-22 21:38:52,342 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 350 [2022-07-22 21:38:52,344 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 371 transitions, 1213 flow. Second operand has 11 states, 11 states have (on average 273.0) internal successors, (3003), 11 states have internal predecessors, (3003), 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) [2022-07-22 21:38:52,344 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:38:52,344 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 350 [2022-07-22 21:38:52,344 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:38:57,852 INFO L129 PetriNetUnfolder]: 4966/37610 cut-off events. [2022-07-22 21:38:57,853 INFO L130 PetriNetUnfolder]: For 8388/8777 co-relation queries the response was YES. [2022-07-22 21:38:58,031 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52909 conditions, 37610 events. 4966/37610 cut-off events. For 8388/8777 co-relation queries the response was YES. Maximal size of possible extension queue 823. Compared 560715 event pairs, 2134 based on Foata normal form. 65/34593 useless extension candidates. Maximal degree in co-relation 52878. Up to 2270 conditions per place. [2022-07-22 21:38:58,114 INFO L132 encePairwiseOnDemand]: 333/350 looper letters, 180 selfloop transitions, 40 changer transitions 2/486 dead transitions. [2022-07-22 21:38:58,115 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 486 transitions, 2107 flow [2022-07-22 21:38:58,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-22 21:38:58,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-22 21:38:58,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 5246 transitions. [2022-07-22 21:38:58,121 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7888721804511278 [2022-07-22 21:38:58,122 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 5246 transitions. [2022-07-22 21:38:58,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 5246 transitions. [2022-07-22 21:38:58,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:38:58,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 5246 transitions. [2022-07-22 21:38:58,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 276.10526315789474) internal successors, (5246), 19 states have internal predecessors, (5246), 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) [2022-07-22 21:38:58,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 350.0) internal successors, (7000), 20 states have internal predecessors, (7000), 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) [2022-07-22 21:38:58,143 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 350.0) internal successors, (7000), 20 states have internal predecessors, (7000), 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) [2022-07-22 21:38:58,143 INFO L186 Difference]: Start difference. First operand has 399 places, 371 transitions, 1213 flow. Second operand 19 states and 5246 transitions. [2022-07-22 21:38:58,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 486 transitions, 2107 flow [2022-07-22 21:38:58,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 486 transitions, 2064 flow, removed 3 selfloop flow, removed 9 redundant places. [2022-07-22 21:38:58,178 INFO L242 Difference]: Finished difference. Result has 414 places, 383 transitions, 1347 flow [2022-07-22 21:38:58,179 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=1174, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1347, PETRI_PLACES=414, PETRI_TRANSITIONS=383} [2022-07-22 21:38:58,181 INFO L279 CegarLoopForPetriNet]: 318 programPoint places, 96 predicate places. [2022-07-22 21:38:58,182 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 383 transitions, 1347 flow [2022-07-22 21:38:58,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 273.0) internal successors, (3003), 11 states have internal predecessors, (3003), 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) [2022-07-22 21:38:58,183 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:38:58,183 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:38:58,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 21:38:58,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:38:58,400 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)] === [2022-07-22 21:38:58,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:38:58,400 INFO L85 PathProgramCache]: Analyzing trace with hash 883261830, now seen corresponding path program 1 times [2022-07-22 21:38:58,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:38:58,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459374195] [2022-07-22 21:38:58,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:38:58,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:38:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:38:58,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:38:58,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:38:58,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459374195] [2022-07-22 21:38:58,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459374195] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:38:58,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:38:58,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:38:58,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653927078] [2022-07-22 21:38:58,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:38:58,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:38:58,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:38:58,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:38:58,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:38:58,478 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 350 [2022-07-22 21:38:58,479 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 383 transitions, 1347 flow. Second operand has 7 states, 7 states have (on average 279.42857142857144) internal successors, (1956), 7 states have internal predecessors, (1956), 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) [2022-07-22 21:38:58,479 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:38:58,480 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 350 [2022-07-22 21:38:58,480 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:39:00,032 INFO L129 PetriNetUnfolder]: 743/9168 cut-off events. [2022-07-22 21:39:00,032 INFO L130 PetriNetUnfolder]: For 2522/3267 co-relation queries the response was YES. [2022-07-22 21:39:00,088 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12941 conditions, 9168 events. 743/9168 cut-off events. For 2522/3267 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 105510 event pairs, 432 based on Foata normal form. 33/8545 useless extension candidates. Maximal degree in co-relation 12906. Up to 1109 conditions per place. [2022-07-22 21:39:00,101 INFO L132 encePairwiseOnDemand]: 339/350 looper letters, 75 selfloop transitions, 8 changer transitions 57/409 dead transitions. [2022-07-22 21:39:00,102 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 409 transitions, 1710 flow [2022-07-22 21:39:00,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 21:39:00,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-22 21:39:00,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2834 transitions. [2022-07-22 21:39:00,106 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8097142857142857 [2022-07-22 21:39:00,106 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2834 transitions. [2022-07-22 21:39:00,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2834 transitions. [2022-07-22 21:39:00,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:39:00,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2834 transitions. [2022-07-22 21:39:00,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 283.4) internal successors, (2834), 10 states have internal predecessors, (2834), 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) [2022-07-22 21:39:00,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 350.0) internal successors, (3850), 11 states have internal predecessors, (3850), 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) [2022-07-22 21:39:00,114 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 350.0) internal successors, (3850), 11 states have internal predecessors, (3850), 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) [2022-07-22 21:39:00,114 INFO L186 Difference]: Start difference. First operand has 414 places, 383 transitions, 1347 flow. Second operand 10 states and 2834 transitions. [2022-07-22 21:39:00,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 409 transitions, 1710 flow [2022-07-22 21:39:00,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 409 transitions, 1650 flow, removed 3 selfloop flow, removed 11 redundant places. [2022-07-22 21:39:00,128 INFO L242 Difference]: Finished difference. Result has 411 places, 350 transitions, 1104 flow [2022-07-22 21:39:00,128 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=1274, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1104, PETRI_PLACES=411, PETRI_TRANSITIONS=350} [2022-07-22 21:39:00,129 INFO L279 CegarLoopForPetriNet]: 318 programPoint places, 93 predicate places. [2022-07-22 21:39:00,129 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 350 transitions, 1104 flow [2022-07-22 21:39:00,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 279.42857142857144) internal successors, (1956), 7 states have internal predecessors, (1956), 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) [2022-07-22 21:39:00,130 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:39:00,130 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:39:00,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 21:39:00,130 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)] === [2022-07-22 21:39:00,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:39:00,131 INFO L85 PathProgramCache]: Analyzing trace with hash 2016968799, now seen corresponding path program 1 times [2022-07-22 21:39:00,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:39:00,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386992252] [2022-07-22 21:39:00,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:39:00,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:39:00,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:39:00,327 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 21:39:00,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:39:00,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386992252] [2022-07-22 21:39:00,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386992252] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:39:00,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475215167] [2022-07-22 21:39:00,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:39:00,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:39:00,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:39:00,330 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) [2022-07-22 21:39:00,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 21:39:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:39:00,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-22 21:39:00,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:39:00,864 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 21:39:00,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:39:01,226 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 21:39:01,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475215167] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:39:01,227 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:39:01,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 31 [2022-07-22 21:39:01,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795603984] [2022-07-22 21:39:01,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:39:01,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-22 21:39:01,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:39:01,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-22 21:39:01,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2022-07-22 21:39:01,233 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 350 [2022-07-22 21:39:01,238 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 350 transitions, 1104 flow. Second operand has 31 states, 31 states have (on average 246.3548387096774) internal successors, (7637), 31 states have internal predecessors, (7637), 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) [2022-07-22 21:39:01,238 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:39:01,238 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 350 [2022-07-22 21:39:01,238 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:39:06,805 INFO L129 PetriNetUnfolder]: 2980/30212 cut-off events. [2022-07-22 21:39:06,805 INFO L130 PetriNetUnfolder]: For 7714/7839 co-relation queries the response was YES. [2022-07-22 21:39:07,008 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41914 conditions, 30212 events. 2980/30212 cut-off events. For 7714/7839 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 438851 event pairs, 1802 based on Foata normal form. 93/28069 useless extension candidates. Maximal degree in co-relation 41878. Up to 1818 conditions per place. [2022-07-22 21:39:07,182 INFO L132 encePairwiseOnDemand]: 317/350 looper letters, 281 selfloop transitions, 69 changer transitions 19/609 dead transitions. [2022-07-22 21:39:07,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 609 transitions, 2999 flow [2022-07-22 21:39:07,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-07-22 21:39:07,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-07-22 21:39:07,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 12846 transitions. [2022-07-22 21:39:07,199 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7058241758241758 [2022-07-22 21:39:07,199 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 12846 transitions. [2022-07-22 21:39:07,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 12846 transitions. [2022-07-22 21:39:07,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:39:07,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 12846 transitions. [2022-07-22 21:39:07,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 247.03846153846155) internal successors, (12846), 52 states have internal predecessors, (12846), 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) [2022-07-22 21:39:07,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 350.0) internal successors, (18550), 53 states have internal predecessors, (18550), 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) [2022-07-22 21:39:07,232 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 350.0) internal successors, (18550), 53 states have internal predecessors, (18550), 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) [2022-07-22 21:39:07,232 INFO L186 Difference]: Start difference. First operand has 411 places, 350 transitions, 1104 flow. Second operand 52 states and 12846 transitions. [2022-07-22 21:39:07,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 609 transitions, 2999 flow [2022-07-22 21:39:07,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 609 transitions, 2790 flow, removed 15 selfloop flow, removed 30 redundant places. [2022-07-22 21:39:07,257 INFO L242 Difference]: Finished difference. Result has 441 places, 398 transitions, 1500 flow [2022-07-22 21:39:07,257 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=999, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=1500, PETRI_PLACES=441, PETRI_TRANSITIONS=398} [2022-07-22 21:39:07,258 INFO L279 CegarLoopForPetriNet]: 318 programPoint places, 123 predicate places. [2022-07-22 21:39:07,258 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 398 transitions, 1500 flow [2022-07-22 21:39:07,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 246.3548387096774) internal successors, (7637), 31 states have internal predecessors, (7637), 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) [2022-07-22 21:39:07,260 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:39:07,260 INFO L200 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:39:07,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 21:39:07,461 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,SelfDestructingSolverStorable9 [2022-07-22 21:39:07,462 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)] === [2022-07-22 21:39:07,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:39:07,462 INFO L85 PathProgramCache]: Analyzing trace with hash 621379751, now seen corresponding path program 2 times [2022-07-22 21:39:07,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:39:07,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366049524] [2022-07-22 21:39:07,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:39:07,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:39:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:39:07,724 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 21:39:07,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:39:07,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366049524] [2022-07-22 21:39:07,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366049524] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:39:07,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387371745] [2022-07-22 21:39:07,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 21:39:07,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:39:07,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:39:07,728 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) [2022-07-22 21:39:07,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 21:39:07,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-22 21:39:07,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 21:39:07,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 21:39:07,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:39:08,007 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-22 21:39:08,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 21:39:08,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387371745] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:39:08,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 21:39:08,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17] total 20 [2022-07-22 21:39:08,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100101568] [2022-07-22 21:39:08,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:39:08,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:39:08,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:39:08,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:39:08,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2022-07-22 21:39:08,013 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 350 [2022-07-22 21:39:08,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 398 transitions, 1500 flow. Second operand has 7 states, 7 states have (on average 272.85714285714283) internal successors, (1910), 7 states have internal predecessors, (1910), 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) [2022-07-22 21:39:08,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:39:08,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 350 [2022-07-22 21:39:08,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:39:15,499 INFO L129 PetriNetUnfolder]: 6378/46375 cut-off events. [2022-07-22 21:39:15,499 INFO L130 PetriNetUnfolder]: For 16564/17006 co-relation queries the response was YES. [2022-07-22 21:39:15,941 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70276 conditions, 46375 events. 6378/46375 cut-off events. For 16564/17006 co-relation queries the response was YES. Maximal size of possible extension queue 935. Compared 703751 event pairs, 1508 based on Foata normal form. 243/42641 useless extension candidates. Maximal degree in co-relation 70229. Up to 3955 conditions per place. [2022-07-22 21:39:16,073 INFO L132 encePairwiseOnDemand]: 341/350 looper letters, 144 selfloop transitions, 32 changer transitions 4/490 dead transitions. [2022-07-22 21:39:16,074 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 490 transitions, 2352 flow [2022-07-22 21:39:16,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:39:16,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:39:16,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1963 transitions. [2022-07-22 21:39:16,076 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8012244897959183 [2022-07-22 21:39:16,076 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1963 transitions. [2022-07-22 21:39:16,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1963 transitions. [2022-07-22 21:39:16,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:39:16,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1963 transitions. [2022-07-22 21:39:16,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.42857142857144) internal successors, (1963), 7 states have internal predecessors, (1963), 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) [2022-07-22 21:39:16,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 350.0) internal successors, (2800), 8 states have internal predecessors, (2800), 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) [2022-07-22 21:39:16,081 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 350.0) internal successors, (2800), 8 states have internal predecessors, (2800), 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) [2022-07-22 21:39:16,081 INFO L186 Difference]: Start difference. First operand has 441 places, 398 transitions, 1500 flow. Second operand 7 states and 1963 transitions. [2022-07-22 21:39:16,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 490 transitions, 2352 flow [2022-07-22 21:39:16,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 490 transitions, 2279 flow, removed 33 selfloop flow, removed 10 redundant places. [2022-07-22 21:39:16,129 INFO L242 Difference]: Finished difference. Result has 436 places, 422 transitions, 1744 flow [2022-07-22 21:39:16,130 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=1457, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1744, PETRI_PLACES=436, PETRI_TRANSITIONS=422} [2022-07-22 21:39:16,130 INFO L279 CegarLoopForPetriNet]: 318 programPoint places, 118 predicate places. [2022-07-22 21:39:16,131 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 422 transitions, 1744 flow [2022-07-22 21:39:16,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 272.85714285714283) internal successors, (1910), 7 states have internal predecessors, (1910), 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) [2022-07-22 21:39:16,131 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:39:16,132 INFO L200 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:39:16,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 21:39:16,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:39:16,347 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)] === [2022-07-22 21:39:16,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:39:16,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1872062923, now seen corresponding path program 3 times [2022-07-22 21:39:16,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:39:16,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984588192] [2022-07-22 21:39:16,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:39:16,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:39:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:39:16,565 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 21:39:16,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:39:16,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984588192] [2022-07-22 21:39:16,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984588192] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:39:16,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932340003] [2022-07-22 21:39:16,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 21:39:16,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:39:16,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:39:16,567 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:39:16,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 21:39:16,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-07-22 21:39:16,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 21:39:16,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 21:39:16,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:39:16,827 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-22 21:39:16,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 21:39:16,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932340003] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:39:16,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 21:39:16,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17] total 20 [2022-07-22 21:39:16,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072926283] [2022-07-22 21:39:16,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:39:16,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:39:16,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:39:16,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:39:16,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2022-07-22 21:39:16,832 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 350 [2022-07-22 21:39:16,833 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 422 transitions, 1744 flow. Second operand has 7 states, 7 states have (on average 272.85714285714283) internal successors, (1910), 7 states have internal predecessors, (1910), 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) [2022-07-22 21:39:16,833 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:39:16,833 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 350 [2022-07-22 21:39:16,833 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand