./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/unroll-cond-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/unroll-cond-4.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4755329f7559a8be1422f8772c1ed30abe185c2742a237de140cc196ec4e9010 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 22:01:00,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 22:01:00,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 22:01:00,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 22:01:00,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 22:01:00,617 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 22:01:00,619 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 22:01:00,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 22:01:00,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 22:01:00,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 22:01:00,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 22:01:00,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 22:01:00,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 22:01:00,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 22:01:00,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 22:01:00,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 22:01:00,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 22:01:00,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 22:01:00,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 22:01:00,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 22:01:00,646 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 22:01:00,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 22:01:00,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 22:01:00,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 22:01:00,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 22:01:00,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 22:01:00,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 22:01:00,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 22:01:00,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 22:01:00,658 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 22:01:00,659 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 22:01:00,660 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 22:01:00,661 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 22:01:00,662 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 22:01:00,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 22:01:00,664 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 22:01:00,664 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 22:01:00,665 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 22:01:00,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 22:01:00,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 22:01:00,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 22:01:00,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 22:01:00,669 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 22:01:00,699 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 22:01:00,700 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 22:01:00,700 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 22:01:00,700 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 22:01:00,701 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 22:01:00,701 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 22:01:00,702 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 22:01:00,702 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 22:01:00,702 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 22:01:00,703 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 22:01:00,703 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 22:01:00,703 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 22:01:00,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 22:01:00,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 22:01:00,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 22:01:00,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 22:01:00,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 22:01:00,704 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 22:01:00,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 22:01:00,705 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 22:01:00,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 22:01:00,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 22:01:00,706 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 22:01:00,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 22:01:00,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:01:00,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 22:01:00,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 22:01:00,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 22:01:00,708 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 22:01:00,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 22:01:00,708 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 22:01:00,708 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 22:01:00,708 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 22:01:00,709 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4755329f7559a8be1422f8772c1ed30abe185c2742a237de140cc196ec4e9010 [2022-07-22 22:01:00,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 22:01:00,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 22:01:00,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 22:01:00,979 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 22:01:00,983 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 22:01:00,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/unroll-cond-4.wvr.c [2022-07-22 22:01:01,052 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbd5a2c4d/93b66adac06b4a55aa401ff846cff1a4/FLAG7a0144c59 [2022-07-22 22:01:01,441 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 22:01:01,441 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-4.wvr.c [2022-07-22 22:01:01,447 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbd5a2c4d/93b66adac06b4a55aa401ff846cff1a4/FLAG7a0144c59 [2022-07-22 22:01:01,836 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbd5a2c4d/93b66adac06b4a55aa401ff846cff1a4 [2022-07-22 22:01:01,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 22:01:01,840 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 22:01:01,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 22:01:01,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 22:01:01,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 22:01:01,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:01:01" (1/1) ... [2022-07-22 22:01:01,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10fd624c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:01:01, skipping insertion in model container [2022-07-22 22:01:01,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:01:01" (1/1) ... [2022-07-22 22:01:01,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 22:01:01,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 22:01:02,029 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-4.wvr.c[2808,2821] [2022-07-22 22:01:02,044 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:01:02,059 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 22:01:02,080 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-4.wvr.c[2808,2821] [2022-07-22 22:01:02,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:01:02,097 INFO L208 MainTranslator]: Completed translation [2022-07-22 22:01:02,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:01:02 WrapperNode [2022-07-22 22:01:02,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 22:01:02,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 22:01:02,099 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 22:01:02,099 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 22:01:02,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:01:02" (1/1) ... [2022-07-22 22:01:02,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:01:02" (1/1) ... [2022-07-22 22:01:02,141 INFO L137 Inliner]: procedures = 24, calls = 41, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 183 [2022-07-22 22:01:02,141 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 22:01:02,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 22:01:02,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 22:01:02,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 22:01:02,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:01:02" (1/1) ... [2022-07-22 22:01:02,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:01:02" (1/1) ... [2022-07-22 22:01:02,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:01:02" (1/1) ... [2022-07-22 22:01:02,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:01:02" (1/1) ... [2022-07-22 22:01:02,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:01:02" (1/1) ... [2022-07-22 22:01:02,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:01:02" (1/1) ... [2022-07-22 22:01:02,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:01:02" (1/1) ... [2022-07-22 22:01:02,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 22:01:02,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 22:01:02,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 22:01:02,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 22:01:02,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:01:02" (1/1) ... [2022-07-22 22:01:02,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:01:02,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:01:02,216 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 22:01:02,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 22:01:02,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 22:01:02,244 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-22 22:01:02,245 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-22 22:01:02,245 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-22 22:01:02,245 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-22 22:01:02,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 22:01:02,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 22:01:02,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 22:01:02,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 22:01:02,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 22:01:02,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 22:01:02,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 22:01:02,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 22:01:02,247 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 22:01:02,312 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 22:01:02,313 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 22:01:02,632 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 22:01:02,647 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 22:01:02,648 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-22 22:01:02,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:01:02 BoogieIcfgContainer [2022-07-22 22:01:02,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 22:01:02,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 22:01:02,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 22:01:02,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 22:01:02,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 10:01:01" (1/3) ... [2022-07-22 22:01:02,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fbd6ee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:01:02, skipping insertion in model container [2022-07-22 22:01:02,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:01:02" (2/3) ... [2022-07-22 22:01:02,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fbd6ee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:01:02, skipping insertion in model container [2022-07-22 22:01:02,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:01:02" (3/3) ... [2022-07-22 22:01:02,666 INFO L111 eAbstractionObserver]: Analyzing ICFG unroll-cond-4.wvr.c [2022-07-22 22:01:02,673 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 22:01:02,682 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 22:01:02,683 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 22:01:02,683 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 22:01:02,802 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-22 22:01:02,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 225 places, 239 transitions, 494 flow [2022-07-22 22:01:02,967 INFO L129 PetriNetUnfolder]: 21/237 cut-off events. [2022-07-22 22:01:02,968 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-22 22:01:02,974 INFO L84 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 237 events. 21/237 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 402 event pairs, 0 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2022-07-22 22:01:02,974 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 239 transitions, 494 flow [2022-07-22 22:01:02,987 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 214 places, 228 transitions, 468 flow [2022-07-22 22:01:03,005 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 22:01:03,014 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@bc0b57f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@75f67206 [2022-07-22 22:01:03,014 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-22 22:01:03,068 INFO L129 PetriNetUnfolder]: 18/199 cut-off events. [2022-07-22 22:01:03,069 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-22 22:01:03,069 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:03,070 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:01:03,070 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:03,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:03,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1523200551, now seen corresponding path program 1 times [2022-07-22 22:01:03,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:03,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738517167] [2022-07-22 22:01:03,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:03,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:03,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:03,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:03,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738517167] [2022-07-22 22:01:03,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738517167] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:03,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:01:03,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 22:01:03,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002872371] [2022-07-22 22:01:03,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:03,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 22:01:03,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:03,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 22:01:03,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 22:01:03,270 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 239 [2022-07-22 22:01:03,273 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 228 transitions, 468 flow. Second operand has 2 states, 2 states have (on average 221.5) internal successors, (443), 2 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:03,274 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:03,274 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 239 [2022-07-22 22:01:03,275 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:03,386 INFO L129 PetriNetUnfolder]: 6/213 cut-off events. [2022-07-22 22:01:03,386 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-07-22 22:01:03,390 INFO L84 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 213 events. 6/213 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 379 event pairs, 0 based on Foata normal form. 18/213 useless extension candidates. Maximal degree in co-relation 132. Up to 5 conditions per place. [2022-07-22 22:01:03,393 INFO L132 encePairwiseOnDemand]: 224/239 looper letters, 4 selfloop transitions, 0 changer transitions 4/213 dead transitions. [2022-07-22 22:01:03,393 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 213 transitions, 446 flow [2022-07-22 22:01:03,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 22:01:03,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-22 22:01:03,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 457 transitions. [2022-07-22 22:01:03,415 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9560669456066946 [2022-07-22 22:01:03,416 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 457 transitions. [2022-07-22 22:01:03,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 457 transitions. [2022-07-22 22:01:03,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:03,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 457 transitions. [2022-07-22 22:01:03,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 228.5) internal successors, (457), 2 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:03,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:03,433 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:03,434 INFO L186 Difference]: Start difference. First operand has 214 places, 228 transitions, 468 flow. Second operand 2 states and 457 transitions. [2022-07-22 22:01:03,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 213 transitions, 446 flow [2022-07-22 22:01:03,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 213 transitions, 438 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-22 22:01:03,443 INFO L242 Difference]: Finished difference. Result has 211 places, 209 transitions, 422 flow [2022-07-22 22:01:03,446 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=422, PETRI_PLACES=211, PETRI_TRANSITIONS=209} [2022-07-22 22:01:03,450 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, -3 predicate places. [2022-07-22 22:01:03,450 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 209 transitions, 422 flow [2022-07-22 22:01:03,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 221.5) internal successors, (443), 2 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:03,451 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:03,452 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:01:03,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 22:01:03,453 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:03,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:03,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1399127304, now seen corresponding path program 1 times [2022-07-22 22:01:03,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:03,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845133114] [2022-07-22 22:01:03,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:03,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:03,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:03,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:03,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845133114] [2022-07-22 22:01:03,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845133114] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:03,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:01:03,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 22:01:03,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909364819] [2022-07-22 22:01:03,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:03,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:01:03,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:03,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:01:03,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 22:01:03,768 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 239 [2022-07-22 22:01:03,769 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 209 transitions, 422 flow. Second operand has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:03,769 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:03,769 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 239 [2022-07-22 22:01:03,769 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:03,953 INFO L129 PetriNetUnfolder]: 161/779 cut-off events. [2022-07-22 22:01:03,953 INFO L130 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2022-07-22 22:01:03,955 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 779 events. 161/779 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3609 event pairs, 65 based on Foata normal form. 0/659 useless extension candidates. Maximal degree in co-relation 1052. Up to 216 conditions per place. [2022-07-22 22:01:03,958 INFO L132 encePairwiseOnDemand]: 234/239 looper letters, 40 selfloop transitions, 4 changer transitions 0/222 dead transitions. [2022-07-22 22:01:03,958 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 222 transitions, 538 flow [2022-07-22 22:01:03,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 22:01:03,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-22 22:01:03,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 813 transitions. [2022-07-22 22:01:03,961 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.850418410041841 [2022-07-22 22:01:03,961 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 813 transitions. [2022-07-22 22:01:03,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 813 transitions. [2022-07-22 22:01:03,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:03,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 813 transitions. [2022-07-22 22:01:03,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 203.25) internal successors, (813), 4 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:03,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 239.0) internal successors, (1195), 5 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:03,968 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 239.0) internal successors, (1195), 5 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:03,968 INFO L186 Difference]: Start difference. First operand has 211 places, 209 transitions, 422 flow. Second operand 4 states and 813 transitions. [2022-07-22 22:01:03,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 222 transitions, 538 flow [2022-07-22 22:01:03,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 222 transitions, 538 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 22:01:03,976 INFO L242 Difference]: Finished difference. Result has 212 places, 212 transitions, 449 flow [2022-07-22 22:01:03,977 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=449, PETRI_PLACES=212, PETRI_TRANSITIONS=212} [2022-07-22 22:01:03,978 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, -2 predicate places. [2022-07-22 22:01:03,978 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 212 transitions, 449 flow [2022-07-22 22:01:03,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:03,979 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:03,980 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:01:03,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 22:01:03,980 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:03,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:03,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1910315874, now seen corresponding path program 1 times [2022-07-22 22:01:03,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:03,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249289886] [2022-07-22 22:01:03,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:03,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:04,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:04,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:04,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249289886] [2022-07-22 22:01:04,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249289886] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:04,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:01:04,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 22:01:04,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970544361] [2022-07-22 22:01:04,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:04,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:01:04,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:04,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:01:04,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:01:04,218 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 239 [2022-07-22 22:01:04,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 212 transitions, 449 flow. Second operand has 5 states, 5 states have (on average 192.0) internal successors, (960), 5 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:04,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:04,219 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 239 [2022-07-22 22:01:04,220 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:04,702 INFO L129 PetriNetUnfolder]: 365/1840 cut-off events. [2022-07-22 22:01:04,702 INFO L130 PetriNetUnfolder]: For 118/129 co-relation queries the response was YES. [2022-07-22 22:01:04,707 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2656 conditions, 1840 events. 365/1840 cut-off events. For 118/129 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 13086 event pairs, 165 based on Foata normal form. 3/1651 useless extension candidates. Maximal degree in co-relation 2650. Up to 362 conditions per place. [2022-07-22 22:01:04,714 INFO L132 encePairwiseOnDemand]: 231/239 looper letters, 94 selfloop transitions, 7 changer transitions 0/276 dead transitions. [2022-07-22 22:01:04,715 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 276 transitions, 829 flow [2022-07-22 22:01:04,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:01:04,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-22 22:01:04,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1227 transitions. [2022-07-22 22:01:04,719 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8556485355648535 [2022-07-22 22:01:04,719 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1227 transitions. [2022-07-22 22:01:04,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1227 transitions. [2022-07-22 22:01:04,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:04,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1227 transitions. [2022-07-22 22:01:04,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 204.5) internal successors, (1227), 6 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:04,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:04,727 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:04,727 INFO L186 Difference]: Start difference. First operand has 212 places, 212 transitions, 449 flow. Second operand 6 states and 1227 transitions. [2022-07-22 22:01:04,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 276 transitions, 829 flow [2022-07-22 22:01:04,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 276 transitions, 819 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 22:01:04,735 INFO L242 Difference]: Finished difference. Result has 219 places, 216 transitions, 490 flow [2022-07-22 22:01:04,736 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=490, PETRI_PLACES=219, PETRI_TRANSITIONS=216} [2022-07-22 22:01:04,738 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 5 predicate places. [2022-07-22 22:01:04,738 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 216 transitions, 490 flow [2022-07-22 22:01:04,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 192.0) internal successors, (960), 5 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:04,739 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:04,740 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:01:04,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 22:01:04,740 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:04,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:04,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1819236154, now seen corresponding path program 2 times [2022-07-22 22:01:04,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:04,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624185901] [2022-07-22 22:01:04,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:04,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:04,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:04,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:04,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624185901] [2022-07-22 22:01:04,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624185901] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:04,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:01:04,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 22:01:04,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810598882] [2022-07-22 22:01:04,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:04,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:01:04,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:04,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:01:04,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:01:04,987 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 239 [2022-07-22 22:01:04,988 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 216 transitions, 490 flow. Second operand has 6 states, 6 states have (on average 193.5) internal successors, (1161), 6 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:04,988 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:04,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 239 [2022-07-22 22:01:04,989 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:05,280 INFO L129 PetriNetUnfolder]: 222/1269 cut-off events. [2022-07-22 22:01:05,281 INFO L130 PetriNetUnfolder]: For 307/362 co-relation queries the response was YES. [2022-07-22 22:01:05,285 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1917 conditions, 1269 events. 222/1269 cut-off events. For 307/362 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 8764 event pairs, 104 based on Foata normal form. 55/1230 useless extension candidates. Maximal degree in co-relation 1908. Up to 296 conditions per place. [2022-07-22 22:01:05,289 INFO L132 encePairwiseOnDemand]: 230/239 looper letters, 54 selfloop transitions, 10 changer transitions 0/242 dead transitions. [2022-07-22 22:01:05,290 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 242 transitions, 705 flow [2022-07-22 22:01:05,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 22:01:05,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 22:01:05,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1394 transitions. [2022-07-22 22:01:05,294 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8332337118947998 [2022-07-22 22:01:05,294 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1394 transitions. [2022-07-22 22:01:05,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1394 transitions. [2022-07-22 22:01:05,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:05,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1394 transitions. [2022-07-22 22:01:05,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 199.14285714285714) internal successors, (1394), 7 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:05,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:05,303 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:05,303 INFO L186 Difference]: Start difference. First operand has 219 places, 216 transitions, 490 flow. Second operand 7 states and 1394 transitions. [2022-07-22 22:01:05,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 242 transitions, 705 flow [2022-07-22 22:01:05,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 242 transitions, 699 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 22:01:05,309 INFO L242 Difference]: Finished difference. Result has 227 places, 219 transitions, 531 flow [2022-07-22 22:01:05,309 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=531, PETRI_PLACES=227, PETRI_TRANSITIONS=219} [2022-07-22 22:01:05,310 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 13 predicate places. [2022-07-22 22:01:05,310 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 219 transitions, 531 flow [2022-07-22 22:01:05,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 193.5) internal successors, (1161), 6 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:05,311 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:05,311 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:01:05,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 22:01:05,312 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:05,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:05,313 INFO L85 PathProgramCache]: Analyzing trace with hash -445000328, now seen corresponding path program 1 times [2022-07-22 22:01:05,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:05,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044271231] [2022-07-22 22:01:05,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:05,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:05,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:05,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:05,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044271231] [2022-07-22 22:01:05,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044271231] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:05,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:01:05,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 22:01:05,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324136611] [2022-07-22 22:01:05,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:05,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:01:05,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:05,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:01:05,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:01:05,467 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 239 [2022-07-22 22:01:05,468 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 219 transitions, 531 flow. Second operand has 6 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:05,468 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:05,468 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 239 [2022-07-22 22:01:05,469 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:05,916 INFO L129 PetriNetUnfolder]: 498/2523 cut-off events. [2022-07-22 22:01:05,917 INFO L130 PetriNetUnfolder]: For 709/709 co-relation queries the response was YES. [2022-07-22 22:01:05,924 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4073 conditions, 2523 events. 498/2523 cut-off events. For 709/709 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 19587 event pairs, 212 based on Foata normal form. 11/2359 useless extension candidates. Maximal degree in co-relation 4061. Up to 532 conditions per place. [2022-07-22 22:01:05,933 INFO L132 encePairwiseOnDemand]: 232/239 looper letters, 82 selfloop transitions, 11 changer transitions 0/269 dead transitions. [2022-07-22 22:01:05,933 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 269 transitions, 879 flow [2022-07-22 22:01:05,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 22:01:05,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 22:01:05,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1408 transitions. [2022-07-22 22:01:05,937 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8416019127316199 [2022-07-22 22:01:05,938 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1408 transitions. [2022-07-22 22:01:05,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1408 transitions. [2022-07-22 22:01:05,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:05,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1408 transitions. [2022-07-22 22:01:05,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 201.14285714285714) internal successors, (1408), 7 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:05,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:05,946 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:05,947 INFO L186 Difference]: Start difference. First operand has 227 places, 219 transitions, 531 flow. Second operand 7 states and 1408 transitions. [2022-07-22 22:01:05,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 269 transitions, 879 flow [2022-07-22 22:01:05,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 269 transitions, 866 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-22 22:01:05,958 INFO L242 Difference]: Finished difference. Result has 234 places, 224 transitions, 590 flow [2022-07-22 22:01:05,958 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=590, PETRI_PLACES=234, PETRI_TRANSITIONS=224} [2022-07-22 22:01:05,960 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 20 predicate places. [2022-07-22 22:01:05,961 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 224 transitions, 590 flow [2022-07-22 22:01:05,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:05,962 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:05,962 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:01:05,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 22:01:05,962 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:05,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:05,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1946681628, now seen corresponding path program 2 times [2022-07-22 22:01:05,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:05,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550923648] [2022-07-22 22:01:05,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:05,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:06,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:06,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:06,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550923648] [2022-07-22 22:01:06,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550923648] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:06,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:01:06,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 22:01:06,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429432046] [2022-07-22 22:01:06,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:06,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:01:06,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:06,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:01:06,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:01:06,149 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 239 [2022-07-22 22:01:06,150 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 224 transitions, 590 flow. Second operand has 5 states, 5 states have (on average 192.4) internal successors, (962), 5 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:06,150 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:06,150 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 239 [2022-07-22 22:01:06,150 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:06,603 INFO L129 PetriNetUnfolder]: 531/2677 cut-off events. [2022-07-22 22:01:06,604 INFO L130 PetriNetUnfolder]: For 1693/1703 co-relation queries the response was YES. [2022-07-22 22:01:06,613 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4663 conditions, 2677 events. 531/2677 cut-off events. For 1693/1703 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 21149 event pairs, 297 based on Foata normal form. 4/2488 useless extension candidates. Maximal degree in co-relation 4646. Up to 477 conditions per place. [2022-07-22 22:01:06,623 INFO L132 encePairwiseOnDemand]: 232/239 looper letters, 85 selfloop transitions, 15 changer transitions 0/276 dead transitions. [2022-07-22 22:01:06,624 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 276 transitions, 1018 flow [2022-07-22 22:01:06,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:01:06,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 22:01:06,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1029 transitions. [2022-07-22 22:01:06,627 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8610878661087866 [2022-07-22 22:01:06,627 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1029 transitions. [2022-07-22 22:01:06,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1029 transitions. [2022-07-22 22:01:06,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:06,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1029 transitions. [2022-07-22 22:01:06,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 205.8) internal successors, (1029), 5 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:06,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:06,633 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:06,633 INFO L186 Difference]: Start difference. First operand has 234 places, 224 transitions, 590 flow. Second operand 5 states and 1029 transitions. [2022-07-22 22:01:06,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 276 transitions, 1018 flow [2022-07-22 22:01:06,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 276 transitions, 999 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 22:01:06,642 INFO L242 Difference]: Finished difference. Result has 239 places, 231 transitions, 710 flow [2022-07-22 22:01:06,643 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=710, PETRI_PLACES=239, PETRI_TRANSITIONS=231} [2022-07-22 22:01:06,643 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 25 predicate places. [2022-07-22 22:01:06,644 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 231 transitions, 710 flow [2022-07-22 22:01:06,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 192.4) internal successors, (962), 5 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:06,644 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:06,645 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:01:06,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 22:01:06,645 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:06,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:06,646 INFO L85 PathProgramCache]: Analyzing trace with hash 48186288, now seen corresponding path program 3 times [2022-07-22 22:01:06,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:06,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793487927] [2022-07-22 22:01:06,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:06,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:06,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:06,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:06,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793487927] [2022-07-22 22:01:06,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793487927] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:06,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:01:06,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 22:01:06,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840215429] [2022-07-22 22:01:06,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:06,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:01:06,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:06,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:01:06,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:01:06,935 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 239 [2022-07-22 22:01:06,938 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 231 transitions, 710 flow. Second operand has 6 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:06,938 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:06,938 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 239 [2022-07-22 22:01:06,939 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:07,382 INFO L129 PetriNetUnfolder]: 549/2783 cut-off events. [2022-07-22 22:01:07,382 INFO L130 PetriNetUnfolder]: For 2799/2808 co-relation queries the response was YES. [2022-07-22 22:01:07,394 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5092 conditions, 2783 events. 549/2783 cut-off events. For 2799/2808 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 22323 event pairs, 303 based on Foata normal form. 12/2596 useless extension candidates. Maximal degree in co-relation 5072. Up to 485 conditions per place. [2022-07-22 22:01:07,406 INFO L132 encePairwiseOnDemand]: 232/239 looper letters, 91 selfloop transitions, 16 changer transitions 0/283 dead transitions. [2022-07-22 22:01:07,407 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 283 transitions, 1113 flow [2022-07-22 22:01:07,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:01:07,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-22 22:01:07,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1225 transitions. [2022-07-22 22:01:07,411 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8542538354253836 [2022-07-22 22:01:07,411 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1225 transitions. [2022-07-22 22:01:07,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1225 transitions. [2022-07-22 22:01:07,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:07,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1225 transitions. [2022-07-22 22:01:07,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 204.16666666666666) internal successors, (1225), 6 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:07,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:07,419 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:07,419 INFO L186 Difference]: Start difference. First operand has 239 places, 231 transitions, 710 flow. Second operand 6 states and 1225 transitions. [2022-07-22 22:01:07,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 283 transitions, 1113 flow [2022-07-22 22:01:07,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 283 transitions, 1086 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-07-22 22:01:07,431 INFO L242 Difference]: Finished difference. Result has 246 places, 233 transitions, 756 flow [2022-07-22 22:01:07,432 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=756, PETRI_PLACES=246, PETRI_TRANSITIONS=233} [2022-07-22 22:01:07,432 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 32 predicate places. [2022-07-22 22:01:07,433 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 233 transitions, 756 flow [2022-07-22 22:01:07,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:07,434 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:07,434 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:01:07,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 22:01:07,434 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:07,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:07,435 INFO L85 PathProgramCache]: Analyzing trace with hash 741252792, now seen corresponding path program 4 times [2022-07-22 22:01:07,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:07,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209123538] [2022-07-22 22:01:07,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:07,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:07,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:07,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:07,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209123538] [2022-07-22 22:01:07,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209123538] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:07,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:01:07,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 22:01:07,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503938645] [2022-07-22 22:01:07,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:07,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:01:07,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:07,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:01:07,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:01:07,599 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 239 [2022-07-22 22:01:07,600 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 233 transitions, 756 flow. Second operand has 5 states, 5 states have (on average 192.4) internal successors, (962), 5 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:07,600 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:07,601 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 239 [2022-07-22 22:01:07,601 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:08,000 INFO L129 PetriNetUnfolder]: 547/2767 cut-off events. [2022-07-22 22:01:08,001 INFO L130 PetriNetUnfolder]: For 3200/3203 co-relation queries the response was YES. [2022-07-22 22:01:08,016 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5163 conditions, 2767 events. 547/2767 cut-off events. For 3200/3203 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 22021 event pairs, 304 based on Foata normal form. 5/2565 useless extension candidates. Maximal degree in co-relation 5140. Up to 811 conditions per place. [2022-07-22 22:01:08,081 INFO L132 encePairwiseOnDemand]: 232/239 looper letters, 65 selfloop transitions, 19 changer transitions 0/260 dead transitions. [2022-07-22 22:01:08,083 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 260 transitions, 1075 flow [2022-07-22 22:01:08,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:01:08,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 22:01:08,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1011 transitions. [2022-07-22 22:01:08,086 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8460251046025105 [2022-07-22 22:01:08,086 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1011 transitions. [2022-07-22 22:01:08,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1011 transitions. [2022-07-22 22:01:08,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:08,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1011 transitions. [2022-07-22 22:01:08,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 202.2) internal successors, (1011), 5 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:08,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:08,092 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:08,092 INFO L186 Difference]: Start difference. First operand has 246 places, 233 transitions, 756 flow. Second operand 5 states and 1011 transitions. [2022-07-22 22:01:08,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 260 transitions, 1075 flow [2022-07-22 22:01:08,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 260 transitions, 1045 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-22 22:01:08,105 INFO L242 Difference]: Finished difference. Result has 251 places, 240 transitions, 882 flow [2022-07-22 22:01:08,105 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=882, PETRI_PLACES=251, PETRI_TRANSITIONS=240} [2022-07-22 22:01:08,107 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 37 predicate places. [2022-07-22 22:01:08,107 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 240 transitions, 882 flow [2022-07-22 22:01:08,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 192.4) internal successors, (962), 5 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:08,108 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:08,108 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:01:08,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 22:01:08,109 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:08,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:08,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1633734454, now seen corresponding path program 5 times [2022-07-22 22:01:08,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:08,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799465127] [2022-07-22 22:01:08,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:08,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:08,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:08,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:08,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799465127] [2022-07-22 22:01:08,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799465127] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:08,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:01:08,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 22:01:08,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353794520] [2022-07-22 22:01:08,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:08,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:01:08,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:08,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:01:08,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:01:08,275 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 239 [2022-07-22 22:01:08,276 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 240 transitions, 882 flow. Second operand has 6 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:08,276 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:08,276 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 239 [2022-07-22 22:01:08,276 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:08,709 INFO L129 PetriNetUnfolder]: 525/2656 cut-off events. [2022-07-22 22:01:08,709 INFO L130 PetriNetUnfolder]: For 3614/3615 co-relation queries the response was YES. [2022-07-22 22:01:08,720 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5003 conditions, 2656 events. 525/2656 cut-off events. For 3614/3615 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 20992 event pairs, 272 based on Foata normal form. 12/2476 useless extension candidates. Maximal degree in co-relation 4977. Up to 738 conditions per place. [2022-07-22 22:01:08,731 INFO L132 encePairwiseOnDemand]: 232/239 looper letters, 74 selfloop transitions, 20 changer transitions 0/270 dead transitions. [2022-07-22 22:01:08,731 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 270 transitions, 1171 flow [2022-07-22 22:01:08,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:01:08,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-22 22:01:08,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1211 transitions. [2022-07-22 22:01:08,735 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8444909344490934 [2022-07-22 22:01:08,735 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1211 transitions. [2022-07-22 22:01:08,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1211 transitions. [2022-07-22 22:01:08,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:08,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1211 transitions. [2022-07-22 22:01:08,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 201.83333333333334) internal successors, (1211), 6 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:08,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:08,745 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:08,745 INFO L186 Difference]: Start difference. First operand has 251 places, 240 transitions, 882 flow. Second operand 6 states and 1211 transitions. [2022-07-22 22:01:08,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 270 transitions, 1171 flow [2022-07-22 22:01:08,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 270 transitions, 1130 flow, removed 14 selfloop flow, removed 1 redundant places. [2022-07-22 22:01:08,759 INFO L242 Difference]: Finished difference. Result has 258 places, 242 transitions, 930 flow [2022-07-22 22:01:08,759 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=930, PETRI_PLACES=258, PETRI_TRANSITIONS=242} [2022-07-22 22:01:08,760 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 44 predicate places. [2022-07-22 22:01:08,760 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 242 transitions, 930 flow [2022-07-22 22:01:08,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:08,761 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:08,761 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:01:08,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 22:01:08,762 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:08,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:08,762 INFO L85 PathProgramCache]: Analyzing trace with hash 336008823, now seen corresponding path program 1 times [2022-07-22 22:01:08,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:08,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80789544] [2022-07-22 22:01:08,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:08,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:08,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:08,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:08,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80789544] [2022-07-22 22:01:08,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80789544] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:01:08,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756723186] [2022-07-22 22:01:08,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:08,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:01:08,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:01:08,924 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:01:08,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 22:01:09,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:09,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 22:01:09,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:01:09,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 22:01:09,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:01:09,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756723186] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:09,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:01:09,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-07-22 22:01:09,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322102506] [2022-07-22 22:01:09,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:09,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:01:09,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:09,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:01:09,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-22 22:01:09,276 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 239 [2022-07-22 22:01:09,277 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 242 transitions, 930 flow. Second operand has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:09,278 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:09,278 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 239 [2022-07-22 22:01:09,278 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:09,744 INFO L129 PetriNetUnfolder]: 369/1908 cut-off events. [2022-07-22 22:01:09,745 INFO L130 PetriNetUnfolder]: For 1440/1451 co-relation queries the response was YES. [2022-07-22 22:01:09,756 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3363 conditions, 1908 events. 369/1908 cut-off events. For 1440/1451 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 15106 event pairs, 207 based on Foata normal form. 1/1779 useless extension candidates. Maximal degree in co-relation 3334. Up to 531 conditions per place. [2022-07-22 22:01:09,762 INFO L132 encePairwiseOnDemand]: 219/239 looper letters, 47 selfloop transitions, 13 changer transitions 18/265 dead transitions. [2022-07-22 22:01:09,762 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 265 transitions, 1138 flow [2022-07-22 22:01:09,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 22:01:09,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-22 22:01:09,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1760 transitions. [2022-07-22 22:01:09,767 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7364016736401674 [2022-07-22 22:01:09,767 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1760 transitions. [2022-07-22 22:01:09,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1760 transitions. [2022-07-22 22:01:09,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:09,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1760 transitions. [2022-07-22 22:01:09,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 176.0) internal successors, (1760), 10 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:09,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 239.0) internal successors, (2629), 11 states have internal predecessors, (2629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:09,778 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 239.0) internal successors, (2629), 11 states have internal predecessors, (2629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:09,778 INFO L186 Difference]: Start difference. First operand has 258 places, 242 transitions, 930 flow. Second operand 10 states and 1760 transitions. [2022-07-22 22:01:09,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 265 transitions, 1138 flow [2022-07-22 22:01:09,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 265 transitions, 1093 flow, removed 9 selfloop flow, removed 2 redundant places. [2022-07-22 22:01:09,790 INFO L242 Difference]: Finished difference. Result has 269 places, 243 transitions, 931 flow [2022-07-22 22:01:09,791 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=885, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=931, PETRI_PLACES=269, PETRI_TRANSITIONS=243} [2022-07-22 22:01:09,792 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 55 predicate places. [2022-07-22 22:01:09,792 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 243 transitions, 931 flow [2022-07-22 22:01:09,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:09,793 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:09,793 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:01:09,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 22:01:10,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-22 22:01:10,016 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:10,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:10,016 INFO L85 PathProgramCache]: Analyzing trace with hash 406619300, now seen corresponding path program 1 times [2022-07-22 22:01:10,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:10,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699757404] [2022-07-22 22:01:10,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:10,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:10,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:10,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 22:01:10,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:10,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699757404] [2022-07-22 22:01:10,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699757404] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:01:10,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789698680] [2022-07-22 22:01:10,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:10,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:01:10,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:01:10,216 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:01:10,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 22:01:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:10,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 33 conjunts are in the unsatisfiable core [2022-07-22 22:01:10,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:01:10,947 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-07-22 22:01:10,948 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2022-07-22 22:01:11,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:11,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:01:11,533 INFO L356 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-07-22 22:01:11,534 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-07-22 22:01:12,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:12,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789698680] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:01:12,306 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:01:12,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 18, 18] total 35 [2022-07-22 22:01:12,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093610397] [2022-07-22 22:01:12,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:01:12,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-22 22:01:12,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:12,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-22 22:01:12,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1081, Unknown=0, NotChecked=0, Total=1190 [2022-07-22 22:01:12,313 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 239 [2022-07-22 22:01:12,328 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 243 transitions, 931 flow. Second operand has 35 states, 35 states have (on average 96.82857142857142) internal successors, (3389), 35 states have internal predecessors, (3389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:12,328 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:12,328 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 239 [2022-07-22 22:01:12,329 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:30,223 INFO L129 PetriNetUnfolder]: 26272/55706 cut-off events. [2022-07-22 22:01:30,223 INFO L130 PetriNetUnfolder]: For 48678/48708 co-relation queries the response was YES. [2022-07-22 22:01:30,563 INFO L84 FinitePrefix]: Finished finitePrefix Result has 122993 conditions, 55706 events. 26272/55706 cut-off events. For 48678/48708 co-relation queries the response was YES. Maximal size of possible extension queue 937. Compared 576297 event pairs, 1094 based on Foata normal form. 80/54569 useless extension candidates. Maximal degree in co-relation 122960. Up to 8491 conditions per place. [2022-07-22 22:01:30,926 INFO L132 encePairwiseOnDemand]: 163/239 looper letters, 1981 selfloop transitions, 514 changer transitions 398/2975 dead transitions. [2022-07-22 22:01:30,926 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 2975 transitions, 16572 flow [2022-07-22 22:01:30,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-07-22 22:01:30,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2022-07-22 22:01:30,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 17241 transitions. [2022-07-22 22:01:30,960 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.45086297071129705 [2022-07-22 22:01:30,961 INFO L72 ComplementDD]: Start complementDD. Operand 160 states and 17241 transitions. [2022-07-22 22:01:30,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 160 states and 17241 transitions. [2022-07-22 22:01:30,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:30,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 160 states and 17241 transitions. [2022-07-22 22:01:31,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 161 states, 160 states have (on average 107.75625) internal successors, (17241), 160 states have internal predecessors, (17241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:31,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 161 states, 161 states have (on average 239.0) internal successors, (38479), 161 states have internal predecessors, (38479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:31,077 INFO L81 ComplementDD]: Finished complementDD. Result has 161 states, 161 states have (on average 239.0) internal successors, (38479), 161 states have internal predecessors, (38479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:31,077 INFO L186 Difference]: Start difference. First operand has 269 places, 243 transitions, 931 flow. Second operand 160 states and 17241 transitions. [2022-07-22 22:01:31,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 2975 transitions, 16572 flow [2022-07-22 22:01:31,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 2975 transitions, 15768 flow, removed 292 selfloop flow, removed 7 redundant places. [2022-07-22 22:01:31,631 INFO L242 Difference]: Finished difference. Result has 527 places, 783 transitions, 5883 flow [2022-07-22 22:01:31,632 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=902, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=160, PETRI_FLOW=5883, PETRI_PLACES=527, PETRI_TRANSITIONS=783} [2022-07-22 22:01:31,632 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 313 predicate places. [2022-07-22 22:01:31,633 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 783 transitions, 5883 flow [2022-07-22 22:01:31,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 96.82857142857142) internal successors, (3389), 35 states have internal predecessors, (3389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:31,634 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:31,634 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:01:31,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 22:01:31,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-22 22:01:31,855 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:31,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:31,856 INFO L85 PathProgramCache]: Analyzing trace with hash -617316126, now seen corresponding path program 2 times [2022-07-22 22:01:31,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:31,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080999343] [2022-07-22 22:01:31,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:31,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:32,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 22:01:32,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:32,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080999343] [2022-07-22 22:01:32,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080999343] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:01:32,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114641068] [2022-07-22 22:01:32,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:01:32,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:01:32,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:01:32,084 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:01:32,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 22:01:32,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-22 22:01:32,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:01:32,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 22:01:32,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:01:32,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 22:01:32,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:01:32,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114641068] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:32,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:01:32,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-07-22 22:01:32,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509068580] [2022-07-22 22:01:32,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:32,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:01:32,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:32,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:01:32,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-07-22 22:01:32,493 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 239 [2022-07-22 22:01:32,494 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 783 transitions, 5883 flow. Second operand has 8 states, 8 states have (on average 193.25) internal successors, (1546), 8 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:32,495 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:32,495 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 239 [2022-07-22 22:01:32,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:37,117 INFO L129 PetriNetUnfolder]: 4078/16535 cut-off events. [2022-07-22 22:01:37,117 INFO L130 PetriNetUnfolder]: For 175001/176261 co-relation queries the response was YES. [2022-07-22 22:01:37,395 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68426 conditions, 16535 events. 4078/16535 cut-off events. For 175001/176261 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 188245 event pairs, 1363 based on Foata normal form. 292/16094 useless extension candidates. Maximal degree in co-relation 68287. Up to 2391 conditions per place. [2022-07-22 22:01:37,482 INFO L132 encePairwiseOnDemand]: 229/239 looper letters, 106 selfloop transitions, 64 changer transitions 0/839 dead transitions. [2022-07-22 22:01:37,482 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 839 transitions, 6693 flow [2022-07-22 22:01:37,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:01:37,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 22:01:37,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1788 transitions. [2022-07-22 22:01:37,486 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8312412831241283 [2022-07-22 22:01:37,486 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1788 transitions. [2022-07-22 22:01:37,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1788 transitions. [2022-07-22 22:01:37,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:37,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1788 transitions. [2022-07-22 22:01:37,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 198.66666666666666) internal successors, (1788), 9 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:37,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:37,492 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:37,493 INFO L186 Difference]: Start difference. First operand has 527 places, 783 transitions, 5883 flow. Second operand 9 states and 1788 transitions. [2022-07-22 22:01:37,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 839 transitions, 6693 flow [2022-07-22 22:01:38,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 839 transitions, 6303 flow, removed 136 selfloop flow, removed 21 redundant places. [2022-07-22 22:01:38,536 INFO L242 Difference]: Finished difference. Result has 468 places, 787 transitions, 5744 flow [2022-07-22 22:01:38,536 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=5587, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=783, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=719, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5744, PETRI_PLACES=468, PETRI_TRANSITIONS=787} [2022-07-22 22:01:38,537 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 254 predicate places. [2022-07-22 22:01:38,537 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 787 transitions, 5744 flow [2022-07-22 22:01:38,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.25) internal successors, (1546), 8 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:38,538 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:38,538 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:01:38,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 22:01:38,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:01:38,739 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:38,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:38,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1590752966, now seen corresponding path program 1 times [2022-07-22 22:01:38,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:38,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058142387] [2022-07-22 22:01:38,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:38,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:39,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 22:01:39,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:39,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058142387] [2022-07-22 22:01:39,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058142387] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:01:39,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893052477] [2022-07-22 22:01:39,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:39,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:01:39,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:01:39,062 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:01:39,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 22:01:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:39,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 40 conjunts are in the unsatisfiable core [2022-07-22 22:01:39,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:01:40,240 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-07-22 22:01:40,241 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 13 [2022-07-22 22:01:40,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:40,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:01:41,036 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 22:01:41,036 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 26 [2022-07-22 22:01:42,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:42,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893052477] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:01:42,215 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:01:42,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 21, 22] total 49 [2022-07-22 22:01:42,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025594536] [2022-07-22 22:01:42,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:01:42,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-22 22:01:42,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:42,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-22 22:01:42,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=2172, Unknown=0, NotChecked=0, Total=2352 [2022-07-22 22:01:42,221 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 239 [2022-07-22 22:01:42,223 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 787 transitions, 5744 flow. Second operand has 49 states, 49 states have (on average 93.18367346938776) internal successors, (4566), 49 states have internal predecessors, (4566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:42,224 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:42,224 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 239 [2022-07-22 22:01:42,224 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:02:06,120 INFO L129 PetriNetUnfolder]: 21383/47488 cut-off events. [2022-07-22 22:02:06,120 INFO L130 PetriNetUnfolder]: For 552627/552904 co-relation queries the response was YES. [2022-07-22 22:02:07,612 INFO L84 FinitePrefix]: Finished finitePrefix Result has 230753 conditions, 47488 events. 21383/47488 cut-off events. For 552627/552904 co-relation queries the response was YES. Maximal size of possible extension queue 793. Compared 497744 event pairs, 2601 based on Foata normal form. 155/46798 useless extension candidates. Maximal degree in co-relation 230625. Up to 18109 conditions per place. [2022-07-22 22:02:08,081 INFO L132 encePairwiseOnDemand]: 172/239 looper letters, 1528 selfloop transitions, 481 changer transitions 4/2118 dead transitions. [2022-07-22 22:02:08,081 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 2118 transitions, 21010 flow [2022-07-22 22:02:08,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-07-22 22:02:08,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2022-07-22 22:02:08,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 11866 transitions. [2022-07-22 22:02:08,100 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.41373779637377966 [2022-07-22 22:02:08,101 INFO L72 ComplementDD]: Start complementDD. Operand 120 states and 11866 transitions. [2022-07-22 22:02:08,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 120 states and 11866 transitions. [2022-07-22 22:02:08,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:02:08,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 120 states and 11866 transitions. [2022-07-22 22:02:08,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 121 states, 120 states have (on average 98.88333333333334) internal successors, (11866), 120 states have internal predecessors, (11866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:08,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 121 states, 121 states have (on average 239.0) internal successors, (28919), 121 states have internal predecessors, (28919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:08,182 INFO L81 ComplementDD]: Finished complementDD. Result has 121 states, 121 states have (on average 239.0) internal successors, (28919), 121 states have internal predecessors, (28919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:08,182 INFO L186 Difference]: Start difference. First operand has 468 places, 787 transitions, 5744 flow. Second operand 120 states and 11866 transitions. [2022-07-22 22:02:08,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 2118 transitions, 21010 flow [2022-07-22 22:02:12,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 2118 transitions, 20873 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-22 22:02:12,452 INFO L242 Difference]: Finished difference. Result has 672 places, 1089 transitions, 10025 flow [2022-07-22 22:02:12,453 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=5643, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=787, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=120, PETRI_FLOW=10025, PETRI_PLACES=672, PETRI_TRANSITIONS=1089} [2022-07-22 22:02:12,453 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 458 predicate places. [2022-07-22 22:02:12,454 INFO L495 AbstractCegarLoop]: Abstraction has has 672 places, 1089 transitions, 10025 flow [2022-07-22 22:02:12,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 93.18367346938776) internal successors, (4566), 49 states have internal predecessors, (4566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:12,455 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:02:12,455 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:02:12,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 22:02:12,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:02:12,656 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:02:12,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:02:12,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1785264432, now seen corresponding path program 1 times [2022-07-22 22:02:12,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:02:12,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029523725] [2022-07-22 22:02:12,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:02:12,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:02:12,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:02:12,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 22:02:12,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:02:12,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029523725] [2022-07-22 22:02:12,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029523725] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:02:12,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549506818] [2022-07-22 22:02:12,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:02:12,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:02:12,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:02:12,858 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:02:12,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 22:02:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:02:12,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-22 22:02:12,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:02:13,654 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 22:02:13,656 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 22:02:13,656 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2022-07-22 22:02:13,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:02:13,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:02:14,062 INFO L356 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-07-22 22:02:14,062 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-07-22 22:02:14,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:02:14,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549506818] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:02:14,663 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:02:14,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 23, 18] total 41 [2022-07-22 22:02:14,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499043829] [2022-07-22 22:02:14,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:02:14,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-07-22 22:02:14,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:02:14,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-07-22 22:02:14,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1482, Unknown=0, NotChecked=0, Total=1640 [2022-07-22 22:02:14,668 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 239 [2022-07-22 22:02:14,671 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 672 places, 1089 transitions, 10025 flow. Second operand has 41 states, 41 states have (on average 90.09756097560975) internal successors, (3694), 41 states have internal predecessors, (3694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:14,671 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:02:14,671 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 239 [2022-07-22 22:02:14,671 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand