./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i -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 4633300b13c3e317f8d3cd1cc05f3f76ba271ffedabaa8599cd9617354fa2b7b --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:49:54,714 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:49:54,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:49:54,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:49:54,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:49:54,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:49:54,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:49:54,768 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:49:54,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:49:54,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:49:54,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:49:54,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:49:54,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:49:54,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:49:54,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:49:54,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:49:54,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:49:54,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:49:54,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:49:54,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:49:54,796 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:49:54,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:49:54,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:49:54,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:49:54,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:49:54,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:49:54,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:49:54,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:49:54,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:49:54,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:49:54,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:49:54,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:49:54,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:49:54,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:49:54,812 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:49:54,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:49:54,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:49:54,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:49:54,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:49:54,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:49:54,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:49:54,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:49:54,818 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:49:54,843 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:49:54,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:49:54,844 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:49:54,845 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:49:54,845 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:49:54,845 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:49:54,846 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:49:54,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:49:54,847 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:49:54,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:49:54,848 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:49:54,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:49:54,848 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:49:54,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:49:54,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:49:54,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:49:54,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:49:54,849 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:49:54,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:49:54,850 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:49:54,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:49:54,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:49:54,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:49:54,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:49:54,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:49:54,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:49:54,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:49:54,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:49:54,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:49:54,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:49:54,860 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:49:54,860 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:49:54,861 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:49:54,861 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4633300b13c3e317f8d3cd1cc05f3f76ba271ffedabaa8599cd9617354fa2b7b [2022-07-13 21:49:55,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:49:55,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:49:55,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:49:55,119 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:49:55,120 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:49:55,121 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-07-13 21:49:55,170 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cf874196/e5d7a0237e5a4271baf039b9a33c03dd/FLAG3446b2c6e [2022-07-13 21:49:55,675 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:49:55,675 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-07-13 21:49:55,695 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cf874196/e5d7a0237e5a4271baf039b9a33c03dd/FLAG3446b2c6e [2022-07-13 21:49:55,976 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cf874196/e5d7a0237e5a4271baf039b9a33c03dd [2022-07-13 21:49:55,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:49:55,980 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:49:55,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:49:55,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:49:55,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:49:55,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:49:55" (1/1) ... [2022-07-13 21:49:55,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51f9d80d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:49:55, skipping insertion in model container [2022-07-13 21:49:55,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:49:55" (1/1) ... [2022-07-13 21:49:55,993 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:49:56,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:49:56,166 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/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-07-13 21:49:56,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:49:56,324 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:49:56,334 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/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-07-13 21:49:56,362 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:49:56,391 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:49:56,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:49:56 WrapperNode [2022-07-13 21:49:56,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:49:56,393 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:49:56,393 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:49:56,393 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:49:56,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:49:56" (1/1) ... [2022-07-13 21:49:56,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:49:56" (1/1) ... [2022-07-13 21:49:56,442 INFO L137 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2022-07-13 21:49:56,443 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:49:56,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:49:56,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:49:56,444 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:49:56,453 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:49:56" (1/1) ... [2022-07-13 21:49:56,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:49:56" (1/1) ... [2022-07-13 21:49:56,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:49:56" (1/1) ... [2022-07-13 21:49:56,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:49:56" (1/1) ... [2022-07-13 21:49:56,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:49:56" (1/1) ... [2022-07-13 21:49:56,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:49:56" (1/1) ... [2022-07-13 21:49:56,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:49:56" (1/1) ... [2022-07-13 21:49:56,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:49:56,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:49:56,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:49:56,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:49:56,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:49:56" (1/1) ... [2022-07-13 21:49:56,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:49:56,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:49:56,532 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) [2022-07-13 21:49:56,553 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 [2022-07-13 21:49:56,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 21:49:56,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-13 21:49:56,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:49:56,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 21:49:56,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 21:49:56,582 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-13 21:49:56,582 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-13 21:49:56,583 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-13 21:49:56,583 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-13 21:49:56,583 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-13 21:49:56,583 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-13 21:49:56,583 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-07-13 21:49:56,584 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-07-13 21:49:56,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:49:56,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-13 21:49:56,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:49:56,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:49:56,585 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 21:49:56,707 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:49:56,709 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:49:56,980 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:49:56,986 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:49:56,996 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 21:49:56,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:49:56 BoogieIcfgContainer [2022-07-13 21:49:56,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:49:57,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:49:57,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:49:57,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:49:57,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:49:55" (1/3) ... [2022-07-13 21:49:57,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@515f2fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:49:57, skipping insertion in model container [2022-07-13 21:49:57,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:49:56" (2/3) ... [2022-07-13 21:49:57,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@515f2fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:49:57, skipping insertion in model container [2022-07-13 21:49:57,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:49:56" (3/3) ... [2022-07-13 21:49:57,008 INFO L111 eAbstractionObserver]: Analyzing ICFG safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-07-13 21:49:57,013 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 21:49:57,021 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:49:57,021 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 21:49:57,021 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 21:49:57,106 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:49:57,155 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 117 places, 106 transitions, 232 flow [2022-07-13 21:49:57,217 INFO L129 PetriNetUnfolder]: 2/102 cut-off events. [2022-07-13 21:49:57,218 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:49:57,223 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 102 events. 2/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2022-07-13 21:49:57,224 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 106 transitions, 232 flow [2022-07-13 21:49:57,230 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 86 transitions, 184 flow [2022-07-13 21:49:57,244 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:49:57,251 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@6ff44971, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3943af0d [2022-07-13 21:49:57,252 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-13 21:49:57,282 INFO L129 PetriNetUnfolder]: 1/85 cut-off events. [2022-07-13 21:49:57,283 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:49:57,283 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:49:57,284 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] [2022-07-13 21:49:57,285 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 2 more)] === [2022-07-13 21:49:57,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:49:57,290 INFO L85 PathProgramCache]: Analyzing trace with hash -793453068, now seen corresponding path program 1 times [2022-07-13 21:49:57,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:49:57,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290591827] [2022-07-13 21:49:57,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:49:57,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:49:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:49:57,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:49:57,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:49:57,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290591827] [2022-07-13 21:49:57,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290591827] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:49:57,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:49:57,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:49:57,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508491320] [2022-07-13 21:49:57,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:49:57,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:49:57,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:49:57,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:49:57,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:49:57,876 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 106 [2022-07-13 21:49:57,883 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 86 transitions, 184 flow. Second operand has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 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) [2022-07-13 21:49:57,883 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:49:57,884 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 106 [2022-07-13 21:49:57,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:49:58,314 INFO L129 PetriNetUnfolder]: 285/808 cut-off events. [2022-07-13 21:49:58,314 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-07-13 21:49:58,319 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1347 conditions, 808 events. 285/808 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4613 event pairs, 97 based on Foata normal form. 26/799 useless extension candidates. Maximal degree in co-relation 1308. Up to 210 conditions per place. [2022-07-13 21:49:58,324 INFO L132 encePairwiseOnDemand]: 96/106 looper letters, 27 selfloop transitions, 5 changer transitions 41/139 dead transitions. [2022-07-13 21:49:58,324 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 139 transitions, 448 flow [2022-07-13 21:49:58,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 21:49:58,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-13 21:49:58,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1158 transitions. [2022-07-13 21:49:58,344 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8403483309143687 [2022-07-13 21:49:58,345 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1158 transitions. [2022-07-13 21:49:58,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1158 transitions. [2022-07-13 21:49:58,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:49:58,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1158 transitions. [2022-07-13 21:49:58,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 89.07692307692308) internal successors, (1158), 13 states have internal predecessors, (1158), 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) [2022-07-13 21:49:58,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 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) [2022-07-13 21:49:58,366 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 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) [2022-07-13 21:49:58,367 INFO L186 Difference]: Start difference. First operand has 98 places, 86 transitions, 184 flow. Second operand 13 states and 1158 transitions. [2022-07-13 21:49:58,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 139 transitions, 448 flow [2022-07-13 21:49:58,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 139 transitions, 440 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-13 21:49:58,385 INFO L242 Difference]: Finished difference. Result has 118 places, 88 transitions, 250 flow [2022-07-13 21:49:58,387 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=250, PETRI_PLACES=118, PETRI_TRANSITIONS=88} [2022-07-13 21:49:58,390 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 20 predicate places. [2022-07-13 21:49:58,391 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 88 transitions, 250 flow [2022-07-13 21:49:58,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 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) [2022-07-13 21:49:58,391 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:49:58,392 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] [2022-07-13 21:49:58,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:49:58,392 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 2 more)] === [2022-07-13 21:49:58,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:49:58,393 INFO L85 PathProgramCache]: Analyzing trace with hash 253153171, now seen corresponding path program 1 times [2022-07-13 21:49:58,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:49:58,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419776310] [2022-07-13 21:49:58,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:49:58,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:49:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:49:58,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:49:58,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:49:58,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419776310] [2022-07-13 21:49:58,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419776310] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:49:58,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:49:58,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:49:58,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846989395] [2022-07-13 21:49:58,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:49:58,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:49:58,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:49:58,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:49:58,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:49:58,528 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 106 [2022-07-13 21:49:58,529 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 88 transitions, 250 flow. Second operand has 7 states, 7 states have (on average 85.14285714285714) internal successors, (596), 7 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:49:58,529 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:49:58,529 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 106 [2022-07-13 21:49:58,529 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:49:58,846 INFO L129 PetriNetUnfolder]: 163/637 cut-off events. [2022-07-13 21:49:58,846 INFO L130 PetriNetUnfolder]: For 1127/1241 co-relation queries the response was YES. [2022-07-13 21:49:58,849 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1723 conditions, 637 events. 163/637 cut-off events. For 1127/1241 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3638 event pairs, 13 based on Foata normal form. 18/631 useless extension candidates. Maximal degree in co-relation 1674. Up to 129 conditions per place. [2022-07-13 21:49:58,852 INFO L132 encePairwiseOnDemand]: 94/106 looper letters, 23 selfloop transitions, 13 changer transitions 40/142 dead transitions. [2022-07-13 21:49:58,852 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 142 transitions, 760 flow [2022-07-13 21:49:58,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 21:49:58,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-13 21:49:58,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1155 transitions. [2022-07-13 21:49:58,863 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8381712626995645 [2022-07-13 21:49:58,864 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1155 transitions. [2022-07-13 21:49:58,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1155 transitions. [2022-07-13 21:49:58,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:49:58,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1155 transitions. [2022-07-13 21:49:58,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 88.84615384615384) internal successors, (1155), 13 states have internal predecessors, (1155), 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) [2022-07-13 21:49:58,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 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) [2022-07-13 21:49:58,872 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 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) [2022-07-13 21:49:58,872 INFO L186 Difference]: Start difference. First operand has 118 places, 88 transitions, 250 flow. Second operand 13 states and 1155 transitions. [2022-07-13 21:49:58,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 142 transitions, 760 flow [2022-07-13 21:49:58,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 142 transitions, 708 flow, removed 24 selfloop flow, removed 4 redundant places. [2022-07-13 21:49:58,887 INFO L242 Difference]: Finished difference. Result has 128 places, 93 transitions, 343 flow [2022-07-13 21:49:58,887 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=343, PETRI_PLACES=128, PETRI_TRANSITIONS=93} [2022-07-13 21:49:58,888 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 30 predicate places. [2022-07-13 21:49:58,888 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 93 transitions, 343 flow [2022-07-13 21:49:58,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.14285714285714) internal successors, (596), 7 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:49:58,889 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:49:58,890 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] [2022-07-13 21:49:58,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:49:58,890 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 2 more)] === [2022-07-13 21:49:58,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:49:58,891 INFO L85 PathProgramCache]: Analyzing trace with hash -788066606, now seen corresponding path program 1 times [2022-07-13 21:49:58,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:49:58,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682507919] [2022-07-13 21:49:58,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:49:58,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:49:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:49:59,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:49:59,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:49:59,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682507919] [2022-07-13 21:49:59,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682507919] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:49:59,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:49:59,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:49:59,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147403253] [2022-07-13 21:49:59,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:49:59,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:49:59,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:49:59,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:49:59,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:49:59,074 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 106 [2022-07-13 21:49:59,075 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 93 transitions, 343 flow. Second operand has 7 states, 7 states have (on average 85.28571428571429) internal successors, (597), 7 states have internal predecessors, (597), 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) [2022-07-13 21:49:59,075 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:49:59,075 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 106 [2022-07-13 21:49:59,076 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:49:59,316 INFO L129 PetriNetUnfolder]: 94/399 cut-off events. [2022-07-13 21:49:59,316 INFO L130 PetriNetUnfolder]: For 1205/1264 co-relation queries the response was YES. [2022-07-13 21:49:59,319 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1274 conditions, 399 events. 94/399 cut-off events. For 1205/1264 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1788 event pairs, 8 based on Foata normal form. 15/395 useless extension candidates. Maximal degree in co-relation 1211. Up to 100 conditions per place. [2022-07-13 21:49:59,323 INFO L132 encePairwiseOnDemand]: 94/106 looper letters, 24 selfloop transitions, 12 changer transitions 25/127 dead transitions. [2022-07-13 21:49:59,323 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 127 transitions, 729 flow [2022-07-13 21:49:59,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 21:49:59,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-13 21:49:59,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1138 transitions. [2022-07-13 21:49:59,329 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8258345428156749 [2022-07-13 21:49:59,329 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1138 transitions. [2022-07-13 21:49:59,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1138 transitions. [2022-07-13 21:49:59,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:49:59,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1138 transitions. [2022-07-13 21:49:59,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 87.53846153846153) internal successors, (1138), 13 states have internal predecessors, (1138), 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) [2022-07-13 21:49:59,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 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) [2022-07-13 21:49:59,335 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 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) [2022-07-13 21:49:59,336 INFO L186 Difference]: Start difference. First operand has 128 places, 93 transitions, 343 flow. Second operand 13 states and 1138 transitions. [2022-07-13 21:49:59,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 127 transitions, 729 flow [2022-07-13 21:49:59,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 127 transitions, 645 flow, removed 42 selfloop flow, removed 12 redundant places. [2022-07-13 21:49:59,346 INFO L242 Difference]: Finished difference. Result has 129 places, 93 transitions, 359 flow [2022-07-13 21:49:59,346 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=359, PETRI_PLACES=129, PETRI_TRANSITIONS=93} [2022-07-13 21:49:59,348 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 31 predicate places. [2022-07-13 21:49:59,348 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 93 transitions, 359 flow [2022-07-13 21:49:59,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.28571428571429) internal successors, (597), 7 states have internal predecessors, (597), 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) [2022-07-13 21:49:59,349 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:49:59,349 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] [2022-07-13 21:49:59,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:49:59,350 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 2 more)] === [2022-07-13 21:49:59,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:49:59,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1720768563, now seen corresponding path program 1 times [2022-07-13 21:49:59,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:49:59,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121571209] [2022-07-13 21:49:59,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:49:59,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:49:59,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:49:59,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:49:59,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:49:59,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121571209] [2022-07-13 21:49:59,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121571209] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:49:59,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:49:59,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:49:59,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374188076] [2022-07-13 21:49:59,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:49:59,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:49:59,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:49:59,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:49:59,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:49:59,466 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 106 [2022-07-13 21:49:59,467 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 93 transitions, 359 flow. Second operand has 7 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:49:59,467 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:49:59,467 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 106 [2022-07-13 21:49:59,467 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:49:59,642 INFO L129 PetriNetUnfolder]: 72/408 cut-off events. [2022-07-13 21:49:59,642 INFO L130 PetriNetUnfolder]: For 1124/1312 co-relation queries the response was YES. [2022-07-13 21:49:59,645 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1236 conditions, 408 events. 72/408 cut-off events. For 1124/1312 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1958 event pairs, 22 based on Foata normal form. 9/399 useless extension candidates. Maximal degree in co-relation 1171. Up to 79 conditions per place. [2022-07-13 21:49:59,647 INFO L132 encePairwiseOnDemand]: 95/106 looper letters, 26 selfloop transitions, 12 changer transitions 17/121 dead transitions. [2022-07-13 21:49:59,647 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 121 transitions, 702 flow [2022-07-13 21:49:59,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:49:59,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 21:49:59,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 881 transitions. [2022-07-13 21:49:59,650 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8311320754716981 [2022-07-13 21:49:59,650 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 881 transitions. [2022-07-13 21:49:59,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 881 transitions. [2022-07-13 21:49:59,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:49:59,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 881 transitions. [2022-07-13 21:49:59,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 88.1) internal successors, (881), 10 states have internal predecessors, (881), 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) [2022-07-13 21:49:59,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 106.0) internal successors, (1166), 11 states have internal predecessors, (1166), 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) [2022-07-13 21:49:59,655 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 106.0) internal successors, (1166), 11 states have internal predecessors, (1166), 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) [2022-07-13 21:49:59,656 INFO L186 Difference]: Start difference. First operand has 129 places, 93 transitions, 359 flow. Second operand 10 states and 881 transitions. [2022-07-13 21:49:59,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 121 transitions, 702 flow [2022-07-13 21:49:59,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 121 transitions, 614 flow, removed 30 selfloop flow, removed 12 redundant places. [2022-07-13 21:49:59,662 INFO L242 Difference]: Finished difference. Result has 125 places, 95 transitions, 387 flow [2022-07-13 21:49:59,663 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=387, PETRI_PLACES=125, PETRI_TRANSITIONS=95} [2022-07-13 21:49:59,663 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 27 predicate places. [2022-07-13 21:49:59,664 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 95 transitions, 387 flow [2022-07-13 21:49:59,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:49:59,664 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:49:59,664 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] [2022-07-13 21:49:59,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:49:59,665 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 2 more)] === [2022-07-13 21:49:59,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:49:59,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1955920115, now seen corresponding path program 1 times [2022-07-13 21:49:59,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:49:59,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754747312] [2022-07-13 21:49:59,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:49:59,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:49:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:49:59,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:49:59,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:49:59,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754747312] [2022-07-13 21:49:59,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754747312] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:49:59,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:49:59,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:49:59,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104835189] [2022-07-13 21:49:59,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:49:59,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:49:59,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:49:59,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:49:59,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:49:59,771 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 106 [2022-07-13 21:49:59,771 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 95 transitions, 387 flow. Second operand has 8 states, 8 states have (on average 85.125) internal successors, (681), 8 states have internal predecessors, (681), 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) [2022-07-13 21:49:59,772 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:49:59,772 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 106 [2022-07-13 21:49:59,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:49:59,911 INFO L129 PetriNetUnfolder]: 69/405 cut-off events. [2022-07-13 21:49:59,911 INFO L130 PetriNetUnfolder]: For 1245/2100 co-relation queries the response was YES. [2022-07-13 21:49:59,913 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1259 conditions, 405 events. 69/405 cut-off events. For 1245/2100 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2091 event pairs, 26 based on Foata normal form. 9/391 useless extension candidates. Maximal degree in co-relation 1195. Up to 66 conditions per place. [2022-07-13 21:49:59,915 INFO L132 encePairwiseOnDemand]: 96/106 looper letters, 24 selfloop transitions, 9 changer transitions 23/122 dead transitions. [2022-07-13 21:49:59,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 122 transitions, 731 flow [2022-07-13 21:49:59,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 21:49:59,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-13 21:49:59,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 710 transitions. [2022-07-13 21:49:59,917 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8372641509433962 [2022-07-13 21:49:59,917 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 710 transitions. [2022-07-13 21:49:59,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 710 transitions. [2022-07-13 21:49:59,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:49:59,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 710 transitions. [2022-07-13 21:49:59,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 88.75) internal successors, (710), 8 states have internal predecessors, (710), 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) [2022-07-13 21:49:59,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 106.0) internal successors, (954), 9 states have internal predecessors, (954), 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) [2022-07-13 21:49:59,921 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 106.0) internal successors, (954), 9 states have internal predecessors, (954), 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) [2022-07-13 21:49:59,921 INFO L186 Difference]: Start difference. First operand has 125 places, 95 transitions, 387 flow. Second operand 8 states and 710 transitions. [2022-07-13 21:49:59,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 122 transitions, 731 flow [2022-07-13 21:49:59,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 122 transitions, 674 flow, removed 20 selfloop flow, removed 7 redundant places. [2022-07-13 21:49:59,927 INFO L242 Difference]: Finished difference. Result has 123 places, 92 transitions, 356 flow [2022-07-13 21:49:59,927 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=356, PETRI_PLACES=123, PETRI_TRANSITIONS=92} [2022-07-13 21:49:59,928 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 25 predicate places. [2022-07-13 21:49:59,928 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 92 transitions, 356 flow [2022-07-13 21:49:59,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 85.125) internal successors, (681), 8 states have internal predecessors, (681), 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) [2022-07-13 21:49:59,928 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:49:59,929 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] [2022-07-13 21:49:59,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:49:59,929 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 2 more)] === [2022-07-13 21:49:59,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:49:59,929 INFO L85 PathProgramCache]: Analyzing trace with hash -997993267, now seen corresponding path program 2 times [2022-07-13 21:49:59,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:49:59,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241691806] [2022-07-13 21:49:59,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:49:59,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:49:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:00,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:00,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:00,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241691806] [2022-07-13 21:50:00,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241691806] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:00,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:00,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:50:00,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47187514] [2022-07-13 21:50:00,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:00,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:50:00,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:00,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:50:00,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:50:00,023 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 106 [2022-07-13 21:50:00,024 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 92 transitions, 356 flow. Second operand has 8 states, 8 states have (on average 83.25) internal successors, (666), 8 states have internal predecessors, (666), 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) [2022-07-13 21:50:00,024 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:00,024 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 106 [2022-07-13 21:50:00,025 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:00,196 INFO L129 PetriNetUnfolder]: 128/540 cut-off events. [2022-07-13 21:50:00,196 INFO L130 PetriNetUnfolder]: For 1870/2680 co-relation queries the response was YES. [2022-07-13 21:50:00,199 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1689 conditions, 540 events. 128/540 cut-off events. For 1870/2680 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3145 event pairs, 16 based on Foata normal form. 15/538 useless extension candidates. Maximal degree in co-relation 1624. Up to 81 conditions per place. [2022-07-13 21:50:00,201 INFO L132 encePairwiseOnDemand]: 92/106 looper letters, 29 selfloop transitions, 12 changer transitions 45/150 dead transitions. [2022-07-13 21:50:00,201 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 150 transitions, 1084 flow [2022-07-13 21:50:00,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 21:50:00,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-13 21:50:00,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 957 transitions. [2022-07-13 21:50:00,204 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8207547169811321 [2022-07-13 21:50:00,204 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 957 transitions. [2022-07-13 21:50:00,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 957 transitions. [2022-07-13 21:50:00,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:00,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 957 transitions. [2022-07-13 21:50:00,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 87.0) internal successors, (957), 11 states have internal predecessors, (957), 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) [2022-07-13 21:50:00,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 106.0) internal successors, (1272), 12 states have internal predecessors, (1272), 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) [2022-07-13 21:50:00,210 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 106.0) internal successors, (1272), 12 states have internal predecessors, (1272), 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) [2022-07-13 21:50:00,210 INFO L186 Difference]: Start difference. First operand has 123 places, 92 transitions, 356 flow. Second operand 11 states and 957 transitions. [2022-07-13 21:50:00,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 150 transitions, 1084 flow [2022-07-13 21:50:00,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 150 transitions, 920 flow, removed 31 selfloop flow, removed 9 redundant places. [2022-07-13 21:50:00,217 INFO L242 Difference]: Finished difference. Result has 129 places, 92 transitions, 356 flow [2022-07-13 21:50:00,217 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=356, PETRI_PLACES=129, PETRI_TRANSITIONS=92} [2022-07-13 21:50:00,219 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 31 predicate places. [2022-07-13 21:50:00,219 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 92 transitions, 356 flow [2022-07-13 21:50:00,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 83.25) internal successors, (666), 8 states have internal predecessors, (666), 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) [2022-07-13 21:50:00,220 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:00,220 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] [2022-07-13 21:50:00,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 21:50:00,221 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 2 more)] === [2022-07-13 21:50:00,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:00,221 INFO L85 PathProgramCache]: Analyzing trace with hash -336361676, now seen corresponding path program 1 times [2022-07-13 21:50:00,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:00,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780409122] [2022-07-13 21:50:00,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:00,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:00,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:00,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:00,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780409122] [2022-07-13 21:50:00,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780409122] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:00,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:00,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:50:00,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091871836] [2022-07-13 21:50:00,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:00,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:50:00,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:00,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:50:00,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:50:00,339 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 106 [2022-07-13 21:50:00,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 92 transitions, 356 flow. Second operand has 6 states, 6 states have (on average 88.83333333333333) internal successors, (533), 6 states have internal predecessors, (533), 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) [2022-07-13 21:50:00,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:00,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 106 [2022-07-13 21:50:00,341 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:00,692 INFO L129 PetriNetUnfolder]: 1341/2737 cut-off events. [2022-07-13 21:50:00,693 INFO L130 PetriNetUnfolder]: For 1486/1553 co-relation queries the response was YES. [2022-07-13 21:50:00,707 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5610 conditions, 2737 events. 1341/2737 cut-off events. For 1486/1553 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 20725 event pairs, 87 based on Foata normal form. 0/2422 useless extension candidates. Maximal degree in co-relation 5544. Up to 885 conditions per place. [2022-07-13 21:50:00,717 INFO L132 encePairwiseOnDemand]: 95/106 looper letters, 35 selfloop transitions, 20 changer transitions 0/131 dead transitions. [2022-07-13 21:50:00,717 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 131 transitions, 548 flow [2022-07-13 21:50:00,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:50:00,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 21:50:00,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 927 transitions. [2022-07-13 21:50:00,720 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8745283018867924 [2022-07-13 21:50:00,720 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 927 transitions. [2022-07-13 21:50:00,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 927 transitions. [2022-07-13 21:50:00,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:00,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 927 transitions. [2022-07-13 21:50:00,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 92.7) internal successors, (927), 10 states have internal predecessors, (927), 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) [2022-07-13 21:50:00,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 106.0) internal successors, (1166), 11 states have internal predecessors, (1166), 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) [2022-07-13 21:50:00,726 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 106.0) internal successors, (1166), 11 states have internal predecessors, (1166), 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) [2022-07-13 21:50:00,726 INFO L186 Difference]: Start difference. First operand has 129 places, 92 transitions, 356 flow. Second operand 10 states and 927 transitions. [2022-07-13 21:50:00,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 131 transitions, 548 flow [2022-07-13 21:50:00,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 131 transitions, 506 flow, removed 8 selfloop flow, removed 11 redundant places. [2022-07-13 21:50:00,734 INFO L242 Difference]: Finished difference. Result has 127 places, 110 transitions, 457 flow [2022-07-13 21:50:00,735 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=457, PETRI_PLACES=127, PETRI_TRANSITIONS=110} [2022-07-13 21:50:00,735 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 29 predicate places. [2022-07-13 21:50:00,735 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 110 transitions, 457 flow [2022-07-13 21:50:00,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.83333333333333) internal successors, (533), 6 states have internal predecessors, (533), 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) [2022-07-13 21:50:00,736 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:00,736 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:50:00,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 21:50:00,737 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 2 more)] === [2022-07-13 21:50:00,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:00,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1194397272, now seen corresponding path program 1 times [2022-07-13 21:50:00,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:00,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883070486] [2022-07-13 21:50:00,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:00,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:00,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:00,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:00,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883070486] [2022-07-13 21:50:00,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883070486] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:00,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:00,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:50:00,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776589019] [2022-07-13 21:50:00,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:00,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:50:00,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:00,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:50:00,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:50:00,815 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 106 [2022-07-13 21:50:00,815 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 110 transitions, 457 flow. Second operand has 7 states, 7 states have (on average 88.71428571428571) internal successors, (621), 7 states have internal predecessors, (621), 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) [2022-07-13 21:50:00,816 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:00,816 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 106 [2022-07-13 21:50:00,816 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:01,346 INFO L129 PetriNetUnfolder]: 1474/3021 cut-off events. [2022-07-13 21:50:01,347 INFO L130 PetriNetUnfolder]: For 9064/9774 co-relation queries the response was YES. [2022-07-13 21:50:01,364 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11371 conditions, 3021 events. 1474/3021 cut-off events. For 9064/9774 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 23711 event pairs, 33 based on Foata normal form. 160/2953 useless extension candidates. Maximal degree in co-relation 11309. Up to 1593 conditions per place. [2022-07-13 21:50:01,377 INFO L132 encePairwiseOnDemand]: 95/106 looper letters, 41 selfloop transitions, 38 changer transitions 0/155 dead transitions. [2022-07-13 21:50:01,378 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 155 transitions, 907 flow [2022-07-13 21:50:01,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 21:50:01,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-13 21:50:01,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1206 transitions. [2022-07-13 21:50:01,381 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8751814223512336 [2022-07-13 21:50:01,381 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1206 transitions. [2022-07-13 21:50:01,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1206 transitions. [2022-07-13 21:50:01,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:01,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1206 transitions. [2022-07-13 21:50:01,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 92.76923076923077) internal successors, (1206), 13 states have internal predecessors, (1206), 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) [2022-07-13 21:50:01,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 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) [2022-07-13 21:50:01,387 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 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) [2022-07-13 21:50:01,387 INFO L186 Difference]: Start difference. First operand has 127 places, 110 transitions, 457 flow. Second operand 13 states and 1206 transitions. [2022-07-13 21:50:01,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 155 transitions, 907 flow [2022-07-13 21:50:01,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 155 transitions, 905 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 21:50:01,404 INFO L242 Difference]: Finished difference. Result has 144 places, 130 transitions, 748 flow [2022-07-13 21:50:01,405 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=748, PETRI_PLACES=144, PETRI_TRANSITIONS=130} [2022-07-13 21:50:01,405 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 46 predicate places. [2022-07-13 21:50:01,405 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 130 transitions, 748 flow [2022-07-13 21:50:01,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.71428571428571) internal successors, (621), 7 states have internal predecessors, (621), 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) [2022-07-13 21:50:01,406 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:01,406 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] [2022-07-13 21:50:01,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 21:50:01,407 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 2 more)] === [2022-07-13 21:50:01,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:01,407 INFO L85 PathProgramCache]: Analyzing trace with hash 766040139, now seen corresponding path program 1 times [2022-07-13 21:50:01,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:01,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867264018] [2022-07-13 21:50:01,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:01,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:01,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:01,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:01,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867264018] [2022-07-13 21:50:01,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867264018] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:01,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:01,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:50:01,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106773355] [2022-07-13 21:50:01,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:01,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:50:01,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:01,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:50:01,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:50:01,490 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 106 [2022-07-13 21:50:01,491 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 130 transitions, 748 flow. Second operand has 8 states, 8 states have (on average 88.625) internal successors, (709), 8 states have internal predecessors, (709), 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) [2022-07-13 21:50:01,491 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:01,491 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 106 [2022-07-13 21:50:01,491 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:02,234 INFO L129 PetriNetUnfolder]: 1444/2930 cut-off events. [2022-07-13 21:50:02,235 INFO L130 PetriNetUnfolder]: For 26168/28683 co-relation queries the response was YES. [2022-07-13 21:50:02,257 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15998 conditions, 2930 events. 1444/2930 cut-off events. For 26168/28683 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 23330 event pairs, 5 based on Foata normal form. 269/2966 useless extension candidates. Maximal degree in co-relation 15928. Up to 1570 conditions per place. [2022-07-13 21:50:02,272 INFO L132 encePairwiseOnDemand]: 95/106 looper letters, 36 selfloop transitions, 58 changer transitions 12/182 dead transitions. [2022-07-13 21:50:02,272 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 182 transitions, 1482 flow [2022-07-13 21:50:02,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 21:50:02,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 21:50:02,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1485 transitions. [2022-07-13 21:50:02,278 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8755896226415094 [2022-07-13 21:50:02,278 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1485 transitions. [2022-07-13 21:50:02,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1485 transitions. [2022-07-13 21:50:02,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:02,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1485 transitions. [2022-07-13 21:50:02,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 92.8125) internal successors, (1485), 16 states have internal predecessors, (1485), 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) [2022-07-13 21:50:02,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 106.0) internal successors, (1802), 17 states have internal predecessors, (1802), 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) [2022-07-13 21:50:02,289 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 106.0) internal successors, (1802), 17 states have internal predecessors, (1802), 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) [2022-07-13 21:50:02,290 INFO L186 Difference]: Start difference. First operand has 144 places, 130 transitions, 748 flow. Second operand 16 states and 1485 transitions. [2022-07-13 21:50:02,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 182 transitions, 1482 flow [2022-07-13 21:50:02,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 182 transitions, 1379 flow, removed 42 selfloop flow, removed 4 redundant places. [2022-07-13 21:50:02,470 INFO L242 Difference]: Finished difference. Result has 159 places, 156 transitions, 1114 flow [2022-07-13 21:50:02,470 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1114, PETRI_PLACES=159, PETRI_TRANSITIONS=156} [2022-07-13 21:50:02,471 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 61 predicate places. [2022-07-13 21:50:02,471 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 156 transitions, 1114 flow [2022-07-13 21:50:02,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 88.625) internal successors, (709), 8 states have internal predecessors, (709), 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) [2022-07-13 21:50:02,472 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:02,472 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] [2022-07-13 21:50:02,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 21:50:02,473 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 2 more)] === [2022-07-13 21:50:02,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:02,473 INFO L85 PathProgramCache]: Analyzing trace with hash 548302654, now seen corresponding path program 1 times [2022-07-13 21:50:02,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:02,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465546041] [2022-07-13 21:50:02,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:02,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:02,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:02,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:02,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465546041] [2022-07-13 21:50:02,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465546041] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:02,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:02,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:50:02,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088889721] [2022-07-13 21:50:02,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:02,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:50:02,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:02,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:50:02,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:50:02,609 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 106 [2022-07-13 21:50:02,610 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 156 transitions, 1114 flow. Second operand has 8 states, 8 states have (on average 85.25) internal successors, (682), 8 states have internal predecessors, (682), 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) [2022-07-13 21:50:02,610 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:02,610 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 106 [2022-07-13 21:50:02,610 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:03,055 INFO L129 PetriNetUnfolder]: 933/2679 cut-off events. [2022-07-13 21:50:03,056 INFO L130 PetriNetUnfolder]: For 19087/19573 co-relation queries the response was YES. [2022-07-13 21:50:03,077 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11784 conditions, 2679 events. 933/2679 cut-off events. For 19087/19573 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 25377 event pairs, 5 based on Foata normal form. 8/2523 useless extension candidates. Maximal degree in co-relation 11706. Up to 875 conditions per place. [2022-07-13 21:50:03,090 INFO L132 encePairwiseOnDemand]: 95/106 looper letters, 25 selfloop transitions, 10 changer transitions 7/172 dead transitions. [2022-07-13 21:50:03,090 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 172 transitions, 1294 flow [2022-07-13 21:50:03,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:50:03,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 21:50:03,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 789 transitions. [2022-07-13 21:50:03,092 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8270440251572327 [2022-07-13 21:50:03,092 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 789 transitions. [2022-07-13 21:50:03,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 789 transitions. [2022-07-13 21:50:03,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:03,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 789 transitions. [2022-07-13 21:50:03,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 87.66666666666667) internal successors, (789), 9 states have internal predecessors, (789), 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) [2022-07-13 21:50:03,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 106.0) internal successors, (1060), 10 states have internal predecessors, (1060), 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) [2022-07-13 21:50:03,097 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 106.0) internal successors, (1060), 10 states have internal predecessors, (1060), 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) [2022-07-13 21:50:03,097 INFO L186 Difference]: Start difference. First operand has 159 places, 156 transitions, 1114 flow. Second operand 9 states and 789 transitions. [2022-07-13 21:50:03,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 172 transitions, 1294 flow [2022-07-13 21:50:03,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 172 transitions, 981 flow, removed 114 selfloop flow, removed 11 redundant places. [2022-07-13 21:50:03,405 INFO L242 Difference]: Finished difference. Result has 160 places, 156 transitions, 830 flow [2022-07-13 21:50:03,405 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=830, PETRI_PLACES=160, PETRI_TRANSITIONS=156} [2022-07-13 21:50:03,406 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 62 predicate places. [2022-07-13 21:50:03,406 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 156 transitions, 830 flow [2022-07-13 21:50:03,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 85.25) internal successors, (682), 8 states have internal predecessors, (682), 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) [2022-07-13 21:50:03,406 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:03,407 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] [2022-07-13 21:50:03,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 21:50:03,407 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 2 more)] === [2022-07-13 21:50:03,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:03,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1656761812, now seen corresponding path program 2 times [2022-07-13 21:50:03,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:03,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764980702] [2022-07-13 21:50:03,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:03,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:03,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:03,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:03,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764980702] [2022-07-13 21:50:03,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764980702] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:03,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:03,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:50:03,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219830833] [2022-07-13 21:50:03,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:03,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:50:03,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:03,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:50:03,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:50:03,512 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 106 [2022-07-13 21:50:03,513 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 156 transitions, 830 flow. Second operand has 9 states, 9 states have (on average 88.55555555555556) internal successors, (797), 9 states have internal predecessors, (797), 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) [2022-07-13 21:50:03,513 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:03,513 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 106 [2022-07-13 21:50:03,513 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:04,136 INFO L129 PetriNetUnfolder]: 1478/3174 cut-off events. [2022-07-13 21:50:04,137 INFO L130 PetriNetUnfolder]: For 6400/7213 co-relation queries the response was YES. [2022-07-13 21:50:04,160 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11226 conditions, 3174 events. 1478/3174 cut-off events. For 6400/7213 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 27786 event pairs, 3 based on Foata normal form. 264/3192 useless extension candidates. Maximal degree in co-relation 11192. Up to 472 conditions per place. [2022-07-13 21:50:04,204 INFO L132 encePairwiseOnDemand]: 95/106 looper letters, 25 selfloop transitions, 57 changer transitions 37/195 dead transitions. [2022-07-13 21:50:04,205 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 195 transitions, 1323 flow [2022-07-13 21:50:04,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-13 21:50:04,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-13 21:50:04,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1743 transitions. [2022-07-13 21:50:04,209 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.865441906653426 [2022-07-13 21:50:04,209 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1743 transitions. [2022-07-13 21:50:04,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1743 transitions. [2022-07-13 21:50:04,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:04,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1743 transitions. [2022-07-13 21:50:04,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 91.73684210526316) internal successors, (1743), 19 states have internal predecessors, (1743), 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) [2022-07-13 21:50:04,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 106.0) internal successors, (2120), 20 states have internal predecessors, (2120), 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) [2022-07-13 21:50:04,219 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 106.0) internal successors, (2120), 20 states have internal predecessors, (2120), 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) [2022-07-13 21:50:04,219 INFO L186 Difference]: Start difference. First operand has 160 places, 156 transitions, 830 flow. Second operand 19 states and 1743 transitions. [2022-07-13 21:50:04,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 195 transitions, 1323 flow [2022-07-13 21:50:04,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 195 transitions, 1276 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-07-13 21:50:04,319 INFO L242 Difference]: Finished difference. Result has 173 places, 147 transitions, 857 flow [2022-07-13 21:50:04,320 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=783, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=857, PETRI_PLACES=173, PETRI_TRANSITIONS=147} [2022-07-13 21:50:04,320 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 75 predicate places. [2022-07-13 21:50:04,320 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 147 transitions, 857 flow [2022-07-13 21:50:04,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 88.55555555555556) internal successors, (797), 9 states have internal predecessors, (797), 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) [2022-07-13 21:50:04,321 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:04,321 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] [2022-07-13 21:50:04,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 21:50:04,322 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 2 more)] === [2022-07-13 21:50:04,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:04,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1733239817, now seen corresponding path program 1 times [2022-07-13 21:50:04,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:04,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722906561] [2022-07-13 21:50:04,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:04,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:04,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:04,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:04,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722906561] [2022-07-13 21:50:04,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722906561] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:04,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:04,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:50:04,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516232505] [2022-07-13 21:50:04,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:04,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:50:04,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:04,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:50:04,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:50:04,409 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 106 [2022-07-13 21:50:04,410 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 147 transitions, 857 flow. Second operand has 7 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 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) [2022-07-13 21:50:04,410 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:04,410 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 106 [2022-07-13 21:50:04,410 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:04,785 INFO L129 PetriNetUnfolder]: 956/2842 cut-off events. [2022-07-13 21:50:04,785 INFO L130 PetriNetUnfolder]: For 6462/6740 co-relation queries the response was YES. [2022-07-13 21:50:04,810 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8660 conditions, 2842 events. 956/2842 cut-off events. For 6462/6740 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 28806 event pairs, 2 based on Foata normal form. 1/2659 useless extension candidates. Maximal degree in co-relation 8582. Up to 347 conditions per place. [2022-07-13 21:50:04,814 INFO L132 encePairwiseOnDemand]: 100/106 looper letters, 0 selfloop transitions, 0 changer transitions 150/150 dead transitions. [2022-07-13 21:50:04,814 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 150 transitions, 922 flow [2022-07-13 21:50:04,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:50:04,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 21:50:04,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 629 transitions. [2022-07-13 21:50:04,816 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8477088948787062 [2022-07-13 21:50:04,816 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 629 transitions. [2022-07-13 21:50:04,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 629 transitions. [2022-07-13 21:50:04,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:04,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 629 transitions. [2022-07-13 21:50:04,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.85714285714286) internal successors, (629), 7 states have internal predecessors, (629), 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) [2022-07-13 21:50:04,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 106.0) internal successors, (848), 8 states have internal predecessors, (848), 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) [2022-07-13 21:50:04,819 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 106.0) internal successors, (848), 8 states have internal predecessors, (848), 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) [2022-07-13 21:50:04,819 INFO L186 Difference]: Start difference. First operand has 173 places, 147 transitions, 857 flow. Second operand 7 states and 629 transitions. [2022-07-13 21:50:04,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 150 transitions, 922 flow [2022-07-13 21:50:04,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 150 transitions, 749 flow, removed 19 selfloop flow, removed 23 redundant places. [2022-07-13 21:50:04,926 INFO L242 Difference]: Finished difference. Result has 150 places, 0 transitions, 0 flow [2022-07-13 21:50:04,926 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=150, PETRI_TRANSITIONS=0} [2022-07-13 21:50:04,927 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 52 predicate places. [2022-07-13 21:50:04,927 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 0 transitions, 0 flow [2022-07-13 21:50:04,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 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) [2022-07-13 21:50:04,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-07-13 21:50:04,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-07-13 21:50:04,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-07-13 21:50:04,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-07-13 21:50:04,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-07-13 21:50:04,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 21:50:04,932 INFO L356 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:50:04,935 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-13 21:50:04,936 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 21:50:04,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 09:50:04 BasicIcfg [2022-07-13 21:50:04,941 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 21:50:04,941 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 21:50:04,942 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 21:50:04,942 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 21:50:04,942 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:49:56" (3/4) ... [2022-07-13 21:50:04,945 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-13 21:50:04,950 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-13 21:50:04,951 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-13 21:50:04,951 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-07-13 21:50:04,951 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2022-07-13 21:50:04,955 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-07-13 21:50:04,955 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-13 21:50:04,956 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-13 21:50:04,956 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-13 21:50:04,990 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 21:50:04,991 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 21:50:04,991 INFO L158 Benchmark]: Toolchain (without parser) took 9011.31ms. Allocated memory was 90.2MB in the beginning and 721.4MB in the end (delta: 631.2MB). Free memory was 65.6MB in the beginning and 368.4MB in the end (delta: -302.7MB). Peak memory consumption was 331.3MB. Max. memory is 16.1GB. [2022-07-13 21:50:04,992 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 90.2MB. Free memory was 64.6MB in the beginning and 64.6MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 21:50:04,992 INFO L158 Benchmark]: CACSL2BoogieTranslator took 410.60ms. Allocated memory is still 90.2MB. Free memory was 65.5MB in the beginning and 45.6MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-07-13 21:50:04,992 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.18ms. Allocated memory is still 90.2MB. Free memory was 45.5MB in the beginning and 43.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 21:50:04,993 INFO L158 Benchmark]: Boogie Preprocessor took 57.18ms. Allocated memory is still 90.2MB. Free memory was 43.5MB in the beginning and 42.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 21:50:04,993 INFO L158 Benchmark]: RCFGBuilder took 497.50ms. Allocated memory was 90.2MB in the beginning and 123.7MB in the end (delta: 33.6MB). Free memory was 42.0MB in the beginning and 94.7MB in the end (delta: -52.7MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. [2022-07-13 21:50:04,993 INFO L158 Benchmark]: TraceAbstraction took 7940.53ms. Allocated memory was 123.7MB in the beginning and 721.4MB in the end (delta: 597.7MB). Free memory was 94.2MB in the beginning and 371.5MB in the end (delta: -277.4MB). Peak memory consumption was 319.4MB. Max. memory is 16.1GB. [2022-07-13 21:50:04,994 INFO L158 Benchmark]: Witness Printer took 49.53ms. Allocated memory is still 721.4MB. Free memory was 371.5MB in the beginning and 368.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-13 21:50:04,995 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 90.2MB. Free memory was 64.6MB in the beginning and 64.6MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 410.60ms. Allocated memory is still 90.2MB. Free memory was 65.5MB in the beginning and 45.6MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.18ms. Allocated memory is still 90.2MB. Free memory was 45.5MB in the beginning and 43.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.18ms. Allocated memory is still 90.2MB. Free memory was 43.5MB in the beginning and 42.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 497.50ms. Allocated memory was 90.2MB in the beginning and 123.7MB in the end (delta: 33.6MB). Free memory was 42.0MB in the beginning and 94.7MB in the end (delta: -52.7MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. * TraceAbstraction took 7940.53ms. Allocated memory was 123.7MB in the beginning and 721.4MB in the end (delta: 597.7MB). Free memory was 94.2MB in the beginning and 371.5MB in the end (delta: -277.4MB). Peak memory consumption was 319.4MB. Max. memory is 16.1GB. * Witness Printer took 49.53ms. Allocated memory is still 721.4MB. Free memory was 371.5MB in the beginning and 368.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 135 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.8s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 639 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 639 mSDsluCounter, 784 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 833 mSDsCounter, 204 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 961 IncrementalHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 204 mSolverCounterUnsat, 180 mSDtfsCounter, 961 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 175 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1114occurred in iteration=9, InterpolantAutomatonStates: 142, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 832 NumberOfCodeBlocks, 832 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 820 ConstructedInterpolants, 0 QuantifiedInterpolants, 3416 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-13 21:50:05,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE