./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-node-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-node-subst.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 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:41:23,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:41:23,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:41:23,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:41:23,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:41:23,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:41:23,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:41:23,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:41:23,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:41:23,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:41:23,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:41:23,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:41:23,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:41:23,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:41:23,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:41:23,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:41:23,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:41:23,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:41:23,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:41:23,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:41:23,987 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:41:23,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:41:23,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:41:23,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:41:23,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:41:23,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:41:23,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:41:23,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:41:23,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:41:24,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:41:24,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:41:24,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:41:24,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:41:24,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:41:24,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:41:24,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:41:24,005 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:41:24,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:41:24,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:41:24,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:41:24,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:41:24,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:41:24,009 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:41:24,042 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:41:24,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:41:24,044 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:41:24,044 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:41:24,044 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:41:24,045 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:41:24,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:41:24,046 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:41:24,046 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:41:24,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:41:24,047 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:41:24,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:41:24,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:41:24,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:41:24,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:41:24,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:41:24,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:41:24,049 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:41:24,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:41:24,050 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:41:24,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:41:24,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:41:24,051 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:41:24,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:41:24,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:41:24,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:41:24,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:41:24,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:41:24,060 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:41:24,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:41:24,060 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:41:24,060 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:41:24,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:41:24,061 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 [2022-07-22 21:41:24,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:41:24,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:41:24,330 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:41:24,330 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:41:24,331 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:41:24,332 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-07-22 21:41:24,383 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c69d120aa/9c259a7725e145dfbed877732d678b18/FLAG7ea347c72 [2022-07-22 21:41:24,847 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:41:24,847 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-07-22 21:41:24,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c69d120aa/9c259a7725e145dfbed877732d678b18/FLAG7ea347c72 [2022-07-22 21:41:25,227 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c69d120aa/9c259a7725e145dfbed877732d678b18 [2022-07-22 21:41:25,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:41:25,230 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:41:25,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:41:25,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:41:25,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:41:25,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:41:25" (1/1) ... [2022-07-22 21:41:25,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d1aab6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:25, skipping insertion in model container [2022-07-22 21:41:25,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:41:25" (1/1) ... [2022-07-22 21:41:25,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:41:25,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:41:25,409 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2022-07-22 21:41:25,419 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:41:25,434 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:41:25,458 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2022-07-22 21:41:25,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:41:25,477 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:41:25,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:25 WrapperNode [2022-07-22 21:41:25,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:41:25,478 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:41:25,478 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:41:25,479 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:41:25,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:25" (1/1) ... [2022-07-22 21:41:25,497 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:25" (1/1) ... [2022-07-22 21:41:25,533 INFO L137 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 437 [2022-07-22 21:41:25,534 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:41:25,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:41:25,535 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:41:25,535 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:41:25,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:25" (1/1) ... [2022-07-22 21:41:25,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:25" (1/1) ... [2022-07-22 21:41:25,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:25" (1/1) ... [2022-07-22 21:41:25,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:25" (1/1) ... [2022-07-22 21:41:25,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:25" (1/1) ... [2022-07-22 21:41:25,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:25" (1/1) ... [2022-07-22 21:41:25,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:25" (1/1) ... [2022-07-22 21:41:25,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:41:25,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:41:25,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:41:25,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:41:25,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:25" (1/1) ... [2022-07-22 21:41:25,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:41:25,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:41:25,635 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 21:41:25,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 21:41:25,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:41:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:41:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:41:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:41:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-22 21:41:25,672 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-22 21:41:25,673 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-22 21:41:25,673 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-22 21:41:25,673 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-22 21:41:25,673 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-22 21:41:25,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:41:25,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 21:41:25,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:41:25,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:41:25,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:41:25,675 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:41:25,769 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:41:25,771 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:41:26,370 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:41:26,387 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:41:26,387 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-22 21:41:26,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:41:26 BoogieIcfgContainer [2022-07-22 21:41:26,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:41:26,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:41:26,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:41:26,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:41:26,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:41:25" (1/3) ... [2022-07-22 21:41:26,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76039956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:41:26, skipping insertion in model container [2022-07-22 21:41:26,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:25" (2/3) ... [2022-07-22 21:41:26,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76039956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:41:26, skipping insertion in model container [2022-07-22 21:41:26,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:41:26" (3/3) ... [2022-07-22 21:41:26,399 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2022-07-22 21:41:26,404 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:41:26,411 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:41:26,412 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:41:26,412 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:41:26,552 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-22 21:41:26,602 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 537 places, 574 transitions, 1172 flow [2022-07-22 21:41:26,802 INFO L129 PetriNetUnfolder]: 47/571 cut-off events. [2022-07-22 21:41:26,802 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-22 21:41:26,811 INFO L84 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 571 events. 47/571 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 848 event pairs, 0 based on Foata normal form. 0/523 useless extension candidates. Maximal degree in co-relation 479. Up to 2 conditions per place. [2022-07-22 21:41:26,811 INFO L82 GeneralOperation]: Start removeDead. Operand has 537 places, 574 transitions, 1172 flow [2022-07-22 21:41:26,824 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 523 places, 560 transitions, 1138 flow [2022-07-22 21:41:26,845 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:41:26,852 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@5751cdab, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@12f63844 [2022-07-22 21:41:26,852 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-22 21:41:26,981 INFO L129 PetriNetUnfolder]: 47/559 cut-off events. [2022-07-22 21:41:26,981 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-22 21:41:26,981 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:26,983 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:26,984 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:26,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:26,989 INFO L85 PathProgramCache]: Analyzing trace with hash 2022928042, now seen corresponding path program 1 times [2022-07-22 21:41:26,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:26,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187088778] [2022-07-22 21:41:26,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:27,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:27,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:27,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:27,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187088778] [2022-07-22 21:41:27,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187088778] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:27,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:27,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:41:27,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505325358] [2022-07-22 21:41:27,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:27,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 21:41:27,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:27,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 21:41:27,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 21:41:27,409 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 538 out of 574 [2022-07-22 21:41:27,416 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 560 transitions, 1138 flow. Second operand has 2 states, 2 states have (on average 543.0) internal successors, (1086), 2 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:27,416 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:27,416 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 538 of 574 [2022-07-22 21:41:27,418 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:27,560 INFO L129 PetriNetUnfolder]: 18/531 cut-off events. [2022-07-22 21:41:27,560 INFO L130 PetriNetUnfolder]: For 14/16 co-relation queries the response was YES. [2022-07-22 21:41:27,565 INFO L84 FinitePrefix]: Finished finitePrefix Result has 551 conditions, 531 events. 18/531 cut-off events. For 14/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 825 event pairs, 0 based on Foata normal form. 34/524 useless extension candidates. Maximal degree in co-relation 455. Up to 7 conditions per place. [2022-07-22 21:41:27,567 INFO L132 encePairwiseOnDemand]: 545/574 looper letters, 6 selfloop transitions, 0 changer transitions 17/531 dead transitions. [2022-07-22 21:41:27,567 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 531 transitions, 1092 flow [2022-07-22 21:41:27,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 21:41:27,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-22 21:41:27,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1111 transitions. [2022-07-22 21:41:27,588 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9677700348432056 [2022-07-22 21:41:27,589 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1111 transitions. [2022-07-22 21:41:27,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1111 transitions. [2022-07-22 21:41:27,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:27,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1111 transitions. [2022-07-22 21:41:27,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 555.5) internal successors, (1111), 2 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:27,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 574.0) internal successors, (1722), 3 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:27,612 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 574.0) internal successors, (1722), 3 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:27,614 INFO L186 Difference]: Start difference. First operand has 523 places, 560 transitions, 1138 flow. Second operand 2 states and 1111 transitions. [2022-07-22 21:41:27,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 531 transitions, 1092 flow [2022-07-22 21:41:27,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 531 transitions, 1080 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-22 21:41:27,636 INFO L242 Difference]: Finished difference. Result has 518 places, 514 transitions, 1034 flow [2022-07-22 21:41:27,639 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=1034, PETRI_PLACES=518, PETRI_TRANSITIONS=514} [2022-07-22 21:41:27,645 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, -5 predicate places. [2022-07-22 21:41:27,645 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 514 transitions, 1034 flow [2022-07-22 21:41:27,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 543.0) internal successors, (1086), 2 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:27,647 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:27,647 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:27,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:41:27,648 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:27,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:27,649 INFO L85 PathProgramCache]: Analyzing trace with hash -735916760, now seen corresponding path program 1 times [2022-07-22 21:41:27,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:27,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533765133] [2022-07-22 21:41:27,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:27,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:27,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:27,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:27,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533765133] [2022-07-22 21:41:27,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533765133] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:27,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:27,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:41:27,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301209473] [2022-07-22 21:41:27,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:27,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:41:27,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:27,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:41:27,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:41:27,933 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 531 out of 574 [2022-07-22 21:41:27,935 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 514 transitions, 1034 flow. Second operand has 3 states, 3 states have (on average 534.3333333333334) internal successors, (1603), 3 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:27,935 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:27,940 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 531 of 574 [2022-07-22 21:41:27,940 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:28,195 INFO L129 PetriNetUnfolder]: 44/720 cut-off events. [2022-07-22 21:41:28,196 INFO L130 PetriNetUnfolder]: For 10/33 co-relation queries the response was YES. [2022-07-22 21:41:28,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 780 conditions, 720 events. 44/720 cut-off events. For 10/33 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2195 event pairs, 10 based on Foata normal form. 0/672 useless extension candidates. Maximal degree in co-relation 777. Up to 35 conditions per place. [2022-07-22 21:41:28,205 INFO L132 encePairwiseOnDemand]: 570/574 looper letters, 14 selfloop transitions, 3 changer transitions 0/518 dead transitions. [2022-07-22 21:41:28,205 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 518 transitions, 1078 flow [2022-07-22 21:41:28,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:41:28,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:41:28,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1611 transitions. [2022-07-22 21:41:28,210 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9355400696864111 [2022-07-22 21:41:28,210 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1611 transitions. [2022-07-22 21:41:28,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1611 transitions. [2022-07-22 21:41:28,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:28,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1611 transitions. [2022-07-22 21:41:28,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 537.0) internal successors, (1611), 3 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:28,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 574.0) internal successors, (2296), 4 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:28,220 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 574.0) internal successors, (2296), 4 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:28,220 INFO L186 Difference]: Start difference. First operand has 518 places, 514 transitions, 1034 flow. Second operand 3 states and 1611 transitions. [2022-07-22 21:41:28,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 518 transitions, 1078 flow [2022-07-22 21:41:28,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 518 transitions, 1078 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:41:28,230 INFO L242 Difference]: Finished difference. Result has 505 places, 516 transitions, 1056 flow [2022-07-22 21:41:28,231 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1056, PETRI_PLACES=505, PETRI_TRANSITIONS=516} [2022-07-22 21:41:28,232 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, -18 predicate places. [2022-07-22 21:41:28,232 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 516 transitions, 1056 flow [2022-07-22 21:41:28,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 534.3333333333334) internal successors, (1603), 3 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:28,234 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:28,234 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:28,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:41:28,235 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:28,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:28,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1470072086, now seen corresponding path program 1 times [2022-07-22 21:41:28,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:28,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424033450] [2022-07-22 21:41:28,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:28,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:28,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:28,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:28,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424033450] [2022-07-22 21:41:28,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424033450] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:28,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:28,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:41:28,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972282320] [2022-07-22 21:41:28,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:28,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:41:28,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:28,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:41:28,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:41:28,390 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 531 out of 574 [2022-07-22 21:41:28,392 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 516 transitions, 1056 flow. Second operand has 3 states, 3 states have (on average 534.3333333333334) internal successors, (1603), 3 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:28,392 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:28,392 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 531 of 574 [2022-07-22 21:41:28,393 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:28,555 INFO L129 PetriNetUnfolder]: 48/795 cut-off events. [2022-07-22 21:41:28,556 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-07-22 21:41:28,563 INFO L84 FinitePrefix]: Finished finitePrefix Result has 882 conditions, 795 events. 48/795 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2861 event pairs, 10 based on Foata normal form. 0/746 useless extension candidates. Maximal degree in co-relation 877. Up to 35 conditions per place. [2022-07-22 21:41:28,567 INFO L132 encePairwiseOnDemand]: 570/574 looper letters, 14 selfloop transitions, 3 changer transitions 0/520 dead transitions. [2022-07-22 21:41:28,567 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 520 transitions, 1100 flow [2022-07-22 21:41:28,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:41:28,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:41:28,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1611 transitions. [2022-07-22 21:41:28,572 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9355400696864111 [2022-07-22 21:41:28,572 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1611 transitions. [2022-07-22 21:41:28,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1611 transitions. [2022-07-22 21:41:28,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:28,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1611 transitions. [2022-07-22 21:41:28,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 537.0) internal successors, (1611), 3 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:28,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 574.0) internal successors, (2296), 4 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:28,582 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 574.0) internal successors, (2296), 4 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:28,582 INFO L186 Difference]: Start difference. First operand has 505 places, 516 transitions, 1056 flow. Second operand 3 states and 1611 transitions. [2022-07-22 21:41:28,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 520 transitions, 1100 flow [2022-07-22 21:41:28,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 520 transitions, 1094 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:41:28,606 INFO L242 Difference]: Finished difference. Result has 507 places, 518 transitions, 1072 flow [2022-07-22 21:41:28,607 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1072, PETRI_PLACES=507, PETRI_TRANSITIONS=518} [2022-07-22 21:41:28,609 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, -16 predicate places. [2022-07-22 21:41:28,609 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 518 transitions, 1072 flow [2022-07-22 21:41:28,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 534.3333333333334) internal successors, (1603), 3 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:28,610 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:28,611 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:28,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:41:28,611 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:28,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:28,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1154364988, now seen corresponding path program 1 times [2022-07-22 21:41:28,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:28,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046558795] [2022-07-22 21:41:28,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:28,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:28,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:28,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:28,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046558795] [2022-07-22 21:41:28,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046558795] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:28,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:28,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:41:28,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764213071] [2022-07-22 21:41:28,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:28,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:41:28,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:28,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:41:28,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:41:28,741 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 531 out of 574 [2022-07-22 21:41:28,742 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 518 transitions, 1072 flow. Second operand has 3 states, 3 states have (on average 534.3333333333334) internal successors, (1603), 3 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:28,743 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:28,743 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 531 of 574 [2022-07-22 21:41:28,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:28,897 INFO L129 PetriNetUnfolder]: 40/663 cut-off events. [2022-07-22 21:41:28,897 INFO L130 PetriNetUnfolder]: For 20/22 co-relation queries the response was YES. [2022-07-22 21:41:28,903 INFO L84 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 663 events. 40/663 cut-off events. For 20/22 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1655 event pairs, 10 based on Foata normal form. 0/625 useless extension candidates. Maximal degree in co-relation 728. Up to 35 conditions per place. [2022-07-22 21:41:28,906 INFO L132 encePairwiseOnDemand]: 570/574 looper letters, 14 selfloop transitions, 3 changer transitions 0/522 dead transitions. [2022-07-22 21:41:28,906 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 522 transitions, 1116 flow [2022-07-22 21:41:28,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:41:28,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:41:28,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1611 transitions. [2022-07-22 21:41:28,910 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9355400696864111 [2022-07-22 21:41:28,910 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1611 transitions. [2022-07-22 21:41:28,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1611 transitions. [2022-07-22 21:41:28,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:28,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1611 transitions. [2022-07-22 21:41:28,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 537.0) internal successors, (1611), 3 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:28,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 574.0) internal successors, (2296), 4 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:28,921 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 574.0) internal successors, (2296), 4 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:28,921 INFO L186 Difference]: Start difference. First operand has 507 places, 518 transitions, 1072 flow. Second operand 3 states and 1611 transitions. [2022-07-22 21:41:28,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 522 transitions, 1116 flow [2022-07-22 21:41:28,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 522 transitions, 1110 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:41:28,931 INFO L242 Difference]: Finished difference. Result has 509 places, 520 transitions, 1088 flow [2022-07-22 21:41:28,933 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1066, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1088, PETRI_PLACES=509, PETRI_TRANSITIONS=520} [2022-07-22 21:41:28,935 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, -14 predicate places. [2022-07-22 21:41:28,935 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 520 transitions, 1088 flow [2022-07-22 21:41:28,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 534.3333333333334) internal successors, (1603), 3 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:28,937 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:28,937 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:28,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:41:28,938 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:28,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:28,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1945453358, now seen corresponding path program 1 times [2022-07-22 21:41:28,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:28,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730314442] [2022-07-22 21:41:28,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:28,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:29,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:29,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:29,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730314442] [2022-07-22 21:41:29,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730314442] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:29,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:29,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:41:29,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542054980] [2022-07-22 21:41:29,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:29,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:41:29,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:29,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:41:29,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:41:29,252 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 574 [2022-07-22 21:41:29,256 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 520 transitions, 1088 flow. Second operand has 8 states, 8 states have (on average 426.375) internal successors, (3411), 8 states have internal predecessors, (3411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:29,257 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:29,257 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 574 [2022-07-22 21:41:29,257 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:29,613 INFO L129 PetriNetUnfolder]: 97/1244 cut-off events. [2022-07-22 21:41:29,614 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-07-22 21:41:29,626 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1539 conditions, 1244 events. 97/1244 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6392 event pairs, 39 based on Foata normal form. 0/1163 useless extension candidates. Maximal degree in co-relation 1532. Up to 159 conditions per place. [2022-07-22 21:41:29,633 INFO L132 encePairwiseOnDemand]: 562/574 looper letters, 106 selfloop transitions, 11 changer transitions 0/524 dead transitions. [2022-07-22 21:41:29,633 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 524 transitions, 1330 flow [2022-07-22 21:41:29,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:41:29,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:41:29,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3844 transitions. [2022-07-22 21:41:29,641 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7440960123886953 [2022-07-22 21:41:29,642 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3844 transitions. [2022-07-22 21:41:29,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3844 transitions. [2022-07-22 21:41:29,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:29,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3844 transitions. [2022-07-22 21:41:29,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 427.1111111111111) internal successors, (3844), 9 states have internal predecessors, (3844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:29,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 574.0) internal successors, (5740), 10 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:29,665 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 574.0) internal successors, (5740), 10 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:29,665 INFO L186 Difference]: Start difference. First operand has 509 places, 520 transitions, 1088 flow. Second operand 9 states and 3844 transitions. [2022-07-22 21:41:29,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 524 transitions, 1330 flow [2022-07-22 21:41:29,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 524 transitions, 1324 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:41:29,676 INFO L242 Difference]: Finished difference. Result has 516 places, 521 transitions, 1112 flow [2022-07-22 21:41:29,677 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1082, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1112, PETRI_PLACES=516, PETRI_TRANSITIONS=521} [2022-07-22 21:41:29,678 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, -7 predicate places. [2022-07-22 21:41:29,678 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 521 transitions, 1112 flow [2022-07-22 21:41:29,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 426.375) internal successors, (3411), 8 states have internal predecessors, (3411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:29,680 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:29,680 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:29,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:41:29,681 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:29,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:29,682 INFO L85 PathProgramCache]: Analyzing trace with hash -23497976, now seen corresponding path program 1 times [2022-07-22 21:41:29,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:29,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665097004] [2022-07-22 21:41:29,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:29,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:29,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:29,837 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 21:41:29,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:29,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665097004] [2022-07-22 21:41:29,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665097004] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:41:29,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265630376] [2022-07-22 21:41:29,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:29,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:41:29,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:41:29,844 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:41:29,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 21:41:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:30,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 21:41:30,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:41:30,276 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 21:41:30,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:41:30,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:30,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265630376] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 21:41:30,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 21:41:30,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 16 [2022-07-22 21:41:30,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749717330] [2022-07-22 21:41:30,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:30,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 21:41:30,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:30,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 21:41:30,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-07-22 21:41:30,503 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 459 out of 574 [2022-07-22 21:41:30,521 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 521 transitions, 1112 flow. Second operand has 9 states, 9 states have (on average 466.0) internal successors, (4194), 9 states have internal predecessors, (4194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:30,521 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:30,521 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 459 of 574 [2022-07-22 21:41:30,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:30,909 INFO L129 PetriNetUnfolder]: 97/1245 cut-off events. [2022-07-22 21:41:30,910 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-07-22 21:41:30,919 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1525 conditions, 1245 events. 97/1245 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6378 event pairs, 39 based on Foata normal form. 0/1164 useless extension candidates. Maximal degree in co-relation 1517. Up to 130 conditions per place. [2022-07-22 21:41:30,925 INFO L132 encePairwiseOnDemand]: 556/574 looper letters, 71 selfloop transitions, 17 changer transitions 0/523 dead transitions. [2022-07-22 21:41:30,925 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 523 transitions, 1292 flow [2022-07-22 21:41:30,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 21:41:30,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-22 21:41:30,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 5137 transitions. [2022-07-22 21:41:30,936 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.813588850174216 [2022-07-22 21:41:30,937 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 5137 transitions. [2022-07-22 21:41:30,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 5137 transitions. [2022-07-22 21:41:30,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:30,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 5137 transitions. [2022-07-22 21:41:30,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 467.0) internal successors, (5137), 11 states have internal predecessors, (5137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:30,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 574.0) internal successors, (6888), 12 states have internal predecessors, (6888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:30,969 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 574.0) internal successors, (6888), 12 states have internal predecessors, (6888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:30,969 INFO L186 Difference]: Start difference. First operand has 516 places, 521 transitions, 1112 flow. Second operand 11 states and 5137 transitions. [2022-07-22 21:41:30,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 523 transitions, 1292 flow [2022-07-22 21:41:30,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 523 transitions, 1272 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-07-22 21:41:30,980 INFO L242 Difference]: Finished difference. Result has 522 places, 523 transitions, 1146 flow [2022-07-22 21:41:30,981 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1146, PETRI_PLACES=522, PETRI_TRANSITIONS=523} [2022-07-22 21:41:30,982 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, -1 predicate places. [2022-07-22 21:41:30,982 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 523 transitions, 1146 flow [2022-07-22 21:41:30,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 466.0) internal successors, (4194), 9 states have internal predecessors, (4194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:30,984 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:30,984 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:31,010 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 21:41:31,197 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,SelfDestructingSolverStorable5 [2022-07-22 21:41:31,198 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:31,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:31,199 INFO L85 PathProgramCache]: Analyzing trace with hash -317225092, now seen corresponding path program 1 times [2022-07-22 21:41:31,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:31,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578897566] [2022-07-22 21:41:31,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:31,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:31,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:31,435 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 21:41:31,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:31,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578897566] [2022-07-22 21:41:31,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578897566] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:31,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:31,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:41:31,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404371001] [2022-07-22 21:41:31,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:31,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:41:31,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:31,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:41:31,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:41:31,442 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 574 [2022-07-22 21:41:31,445 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 523 transitions, 1146 flow. Second operand has 8 states, 8 states have (on average 426.875) internal successors, (3415), 8 states have internal predecessors, (3415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:31,445 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:31,445 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 574 [2022-07-22 21:41:31,445 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:31,748 INFO L129 PetriNetUnfolder]: 67/1026 cut-off events. [2022-07-22 21:41:31,748 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-07-22 21:41:31,758 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1298 conditions, 1026 events. 67/1026 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3991 event pairs, 21 based on Foata normal form. 0/966 useless extension candidates. Maximal degree in co-relation 1287. Up to 136 conditions per place. [2022-07-22 21:41:31,763 INFO L132 encePairwiseOnDemand]: 562/574 looper letters, 108 selfloop transitions, 11 changer transitions 0/527 dead transitions. [2022-07-22 21:41:31,763 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 527 transitions, 1392 flow [2022-07-22 21:41:31,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:41:31,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:41:31,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3844 transitions. [2022-07-22 21:41:31,772 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7440960123886953 [2022-07-22 21:41:31,772 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3844 transitions. [2022-07-22 21:41:31,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3844 transitions. [2022-07-22 21:41:31,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:31,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3844 transitions. [2022-07-22 21:41:31,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 427.1111111111111) internal successors, (3844), 9 states have internal predecessors, (3844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:31,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 574.0) internal successors, (5740), 10 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:31,788 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 574.0) internal successors, (5740), 10 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:31,788 INFO L186 Difference]: Start difference. First operand has 522 places, 523 transitions, 1146 flow. Second operand 9 states and 3844 transitions. [2022-07-22 21:41:31,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 527 transitions, 1392 flow [2022-07-22 21:41:31,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 527 transitions, 1365 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-07-22 21:41:31,800 INFO L242 Difference]: Finished difference. Result has 523 places, 524 transitions, 1149 flow [2022-07-22 21:41:31,801 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1149, PETRI_PLACES=523, PETRI_TRANSITIONS=524} [2022-07-22 21:41:31,802 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 0 predicate places. [2022-07-22 21:41:31,803 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 524 transitions, 1149 flow [2022-07-22 21:41:31,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 426.875) internal successors, (3415), 8 states have internal predecessors, (3415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:31,804 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:31,804 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:31,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:41:31,804 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:31,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:31,805 INFO L85 PathProgramCache]: Analyzing trace with hash 734939679, now seen corresponding path program 1 times [2022-07-22 21:41:31,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:31,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777231724] [2022-07-22 21:41:31,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:31,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:31,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 21:41:31,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:31,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777231724] [2022-07-22 21:41:31,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777231724] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:41:31,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835473016] [2022-07-22 21:41:31,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:31,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:41:31,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:41:31,978 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:41:31,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 21:41:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:32,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 21:41:32,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:41:32,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 21:41:32,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:41:32,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 21:41:32,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835473016] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 21:41:32,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 21:41:32,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 16 [2022-07-22 21:41:32,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214986632] [2022-07-22 21:41:32,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:32,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 21:41:32,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:32,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 21:41:32,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-07-22 21:41:32,610 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 459 out of 574 [2022-07-22 21:41:32,614 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 524 transitions, 1149 flow. Second operand has 9 states, 9 states have (on average 466.8888888888889) internal successors, (4202), 9 states have internal predecessors, (4202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:32,614 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:32,614 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 459 of 574 [2022-07-22 21:41:32,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:32,991 INFO L129 PetriNetUnfolder]: 67/1027 cut-off events. [2022-07-22 21:41:32,991 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-07-22 21:41:32,999 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1274 conditions, 1027 events. 67/1027 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3980 event pairs, 21 based on Foata normal form. 0/966 useless extension candidates. Maximal degree in co-relation 1262. Up to 91 conditions per place. [2022-07-22 21:41:33,003 INFO L132 encePairwiseOnDemand]: 554/574 looper letters, 71 selfloop transitions, 20 changer transitions 0/526 dead transitions. [2022-07-22 21:41:33,003 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 526 transitions, 1335 flow [2022-07-22 21:41:33,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:41:33,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:41:33,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 6055 transitions. [2022-07-22 21:41:33,015 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8114446529080676 [2022-07-22 21:41:33,015 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 6055 transitions. [2022-07-22 21:41:33,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 6055 transitions. [2022-07-22 21:41:33,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:33,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 6055 transitions. [2022-07-22 21:41:33,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 465.7692307692308) internal successors, (6055), 13 states have internal predecessors, (6055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:33,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 574.0) internal successors, (8036), 14 states have internal predecessors, (8036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:33,040 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 574.0) internal successors, (8036), 14 states have internal predecessors, (8036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:33,041 INFO L186 Difference]: Start difference. First operand has 523 places, 524 transitions, 1149 flow. Second operand 13 states and 6055 transitions. [2022-07-22 21:41:33,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 526 transitions, 1335 flow [2022-07-22 21:41:33,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 526 transitions, 1315 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-07-22 21:41:33,049 INFO L242 Difference]: Finished difference. Result has 531 places, 526 transitions, 1189 flow [2022-07-22 21:41:33,050 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1189, PETRI_PLACES=531, PETRI_TRANSITIONS=526} [2022-07-22 21:41:33,051 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 8 predicate places. [2022-07-22 21:41:33,051 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 526 transitions, 1189 flow [2022-07-22 21:41:33,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 466.8888888888889) internal successors, (4202), 9 states have internal predecessors, (4202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:33,052 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:33,053 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:33,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 21:41:33,275 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,SelfDestructingSolverStorable7 [2022-07-22 21:41:33,276 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:33,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:33,276 INFO L85 PathProgramCache]: Analyzing trace with hash -2034615736, now seen corresponding path program 1 times [2022-07-22 21:41:33,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:33,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13790344] [2022-07-22 21:41:33,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:33,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:33,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:33,485 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 21:41:33,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:33,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13790344] [2022-07-22 21:41:33,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13790344] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:33,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:33,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:41:33,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822099674] [2022-07-22 21:41:33,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:33,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:41:33,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:33,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:41:33,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:41:33,494 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 444 out of 574 [2022-07-22 21:41:33,497 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 526 transitions, 1189 flow. Second operand has 7 states, 7 states have (on average 455.57142857142856) internal successors, (3189), 7 states have internal predecessors, (3189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:33,497 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:33,497 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 444 of 574 [2022-07-22 21:41:33,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:33,827 INFO L129 PetriNetUnfolder]: 59/942 cut-off events. [2022-07-22 21:41:33,828 INFO L130 PetriNetUnfolder]: For 21/31 co-relation queries the response was YES. [2022-07-22 21:41:33,837 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1222 conditions, 942 events. 59/942 cut-off events. For 21/31 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3477 event pairs, 14 based on Foata normal form. 1/898 useless extension candidates. Maximal degree in co-relation 1207. Up to 112 conditions per place. [2022-07-22 21:41:33,843 INFO L132 encePairwiseOnDemand]: 566/574 looper letters, 94 selfloop transitions, 5 changer transitions 4/546 dead transitions. [2022-07-22 21:41:33,844 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 546 transitions, 1448 flow [2022-07-22 21:41:33,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:41:33,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:41:33,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4100 transitions. [2022-07-22 21:41:33,853 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7936507936507936 [2022-07-22 21:41:33,853 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4100 transitions. [2022-07-22 21:41:33,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4100 transitions. [2022-07-22 21:41:33,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:33,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4100 transitions. [2022-07-22 21:41:33,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 455.55555555555554) internal successors, (4100), 9 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:33,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 574.0) internal successors, (5740), 10 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:33,873 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 574.0) internal successors, (5740), 10 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:33,873 INFO L186 Difference]: Start difference. First operand has 531 places, 526 transitions, 1189 flow. Second operand 9 states and 4100 transitions. [2022-07-22 21:41:33,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 546 transitions, 1448 flow [2022-07-22 21:41:33,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 546 transitions, 1415 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-07-22 21:41:33,885 INFO L242 Difference]: Finished difference. Result has 536 places, 530 transitions, 1197 flow [2022-07-22 21:41:33,886 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1156, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1197, PETRI_PLACES=536, PETRI_TRANSITIONS=530} [2022-07-22 21:41:33,887 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 13 predicate places. [2022-07-22 21:41:33,887 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 530 transitions, 1197 flow [2022-07-22 21:41:33,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 455.57142857142856) internal successors, (3189), 7 states have internal predecessors, (3189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:33,888 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:33,888 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:33,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 21:41:33,889 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:33,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:33,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1765072472, now seen corresponding path program 1 times [2022-07-22 21:41:33,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:33,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028836663] [2022-07-22 21:41:33,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:33,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:34,117 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 21:41:34,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:34,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028836663] [2022-07-22 21:41:34,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028836663] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:34,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:34,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:41:34,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882003500] [2022-07-22 21:41:34,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:34,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:41:34,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:34,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:41:34,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:41:34,125 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 574 [2022-07-22 21:41:34,127 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 530 transitions, 1197 flow. Second operand has 8 states, 8 states have (on average 427.375) internal successors, (3419), 8 states have internal predecessors, (3419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:34,128 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:34,128 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 574 [2022-07-22 21:41:34,128 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:34,533 INFO L129 PetriNetUnfolder]: 147/1661 cut-off events. [2022-07-22 21:41:34,533 INFO L130 PetriNetUnfolder]: For 60/70 co-relation queries the response was YES. [2022-07-22 21:41:34,547 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2093 conditions, 1661 events. 147/1661 cut-off events. For 60/70 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 9575 event pairs, 66 based on Foata normal form. 0/1527 useless extension candidates. Maximal degree in co-relation 2071. Up to 174 conditions per place. [2022-07-22 21:41:34,551 INFO L132 encePairwiseOnDemand]: 564/574 looper letters, 112 selfloop transitions, 9 changer transitions 0/534 dead transitions. [2022-07-22 21:41:34,551 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 534 transitions, 1447 flow [2022-07-22 21:41:34,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 21:41:34,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-22 21:41:34,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 3430 transitions. [2022-07-22 21:41:34,558 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7469512195121951 [2022-07-22 21:41:34,558 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 3430 transitions. [2022-07-22 21:41:34,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 3430 transitions. [2022-07-22 21:41:34,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:34,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 3430 transitions. [2022-07-22 21:41:34,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 428.75) internal successors, (3430), 8 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:34,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 574.0) internal successors, (5166), 9 states have internal predecessors, (5166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:34,573 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 574.0) internal successors, (5166), 9 states have internal predecessors, (5166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:34,574 INFO L186 Difference]: Start difference. First operand has 536 places, 530 transitions, 1197 flow. Second operand 8 states and 3430 transitions. [2022-07-22 21:41:34,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 534 transitions, 1447 flow [2022-07-22 21:41:34,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 534 transitions, 1442 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-07-22 21:41:34,584 INFO L242 Difference]: Finished difference. Result has 539 places, 531 transitions, 1218 flow [2022-07-22 21:41:34,585 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1192, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1218, PETRI_PLACES=539, PETRI_TRANSITIONS=531} [2022-07-22 21:41:34,586 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 16 predicate places. [2022-07-22 21:41:34,586 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 531 transitions, 1218 flow [2022-07-22 21:41:34,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 427.375) internal successors, (3419), 8 states have internal predecessors, (3419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:34,587 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:34,588 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:34,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 21:41:34,588 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:34,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:34,588 INFO L85 PathProgramCache]: Analyzing trace with hash 681701814, now seen corresponding path program 1 times [2022-07-22 21:41:34,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:34,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508843716] [2022-07-22 21:41:34,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:34,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:34,724 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 21:41:34,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:34,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508843716] [2022-07-22 21:41:34,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508843716] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:41:34,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806466732] [2022-07-22 21:41:34,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:34,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:41:34,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:41:34,727 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:41:34,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 21:41:34,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:34,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 21:41:34,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:41:35,083 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 21:41:35,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:41:35,278 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 21:41:35,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806466732] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 21:41:35,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 21:41:35,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 16 [2022-07-22 21:41:35,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374155700] [2022-07-22 21:41:35,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:35,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 21:41:35,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:35,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 21:41:35,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-07-22 21:41:35,285 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 459 out of 574 [2022-07-22 21:41:35,289 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 531 transitions, 1218 flow. Second operand has 9 states, 9 states have (on average 467.77777777777777) internal successors, (4210), 9 states have internal predecessors, (4210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:35,289 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:35,289 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 459 of 574 [2022-07-22 21:41:35,289 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:35,750 INFO L129 PetriNetUnfolder]: 147/1662 cut-off events. [2022-07-22 21:41:35,751 INFO L130 PetriNetUnfolder]: For 77/87 co-relation queries the response was YES. [2022-07-22 21:41:35,768 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2078 conditions, 1662 events. 147/1662 cut-off events. For 77/87 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 9556 event pairs, 66 based on Foata normal form. 0/1529 useless extension candidates. Maximal degree in co-relation 2057. Up to 134 conditions per place. [2022-07-22 21:41:35,773 INFO L132 encePairwiseOnDemand]: 554/574 looper letters, 73 selfloop transitions, 21 changer transitions 0/533 dead transitions. [2022-07-22 21:41:35,773 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 533 transitions, 1410 flow [2022-07-22 21:41:35,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 21:41:35,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-22 21:41:35,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 5596 transitions. [2022-07-22 21:41:35,784 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8124274099883856 [2022-07-22 21:41:35,785 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 5596 transitions. [2022-07-22 21:41:35,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 5596 transitions. [2022-07-22 21:41:35,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:35,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 5596 transitions. [2022-07-22 21:41:35,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 466.3333333333333) internal successors, (5596), 12 states have internal predecessors, (5596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:35,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 574.0) internal successors, (7462), 13 states have internal predecessors, (7462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:35,806 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 574.0) internal successors, (7462), 13 states have internal predecessors, (7462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:35,806 INFO L186 Difference]: Start difference. First operand has 539 places, 531 transitions, 1218 flow. Second operand 12 states and 5596 transitions. [2022-07-22 21:41:35,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 533 transitions, 1410 flow [2022-07-22 21:41:35,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 533 transitions, 1394 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-22 21:41:35,817 INFO L242 Difference]: Finished difference. Result has 547 places, 533 transitions, 1263 flow [2022-07-22 21:41:35,818 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1202, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1263, PETRI_PLACES=547, PETRI_TRANSITIONS=533} [2022-07-22 21:41:35,818 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 24 predicate places. [2022-07-22 21:41:35,818 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 533 transitions, 1263 flow [2022-07-22 21:41:35,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 467.77777777777777) internal successors, (4210), 9 states have internal predecessors, (4210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:35,820 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:35,820 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:35,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 21:41:36,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:41:36,043 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:36,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:36,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1167783152, now seen corresponding path program 1 times [2022-07-22 21:41:36,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:36,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016652721] [2022-07-22 21:41:36,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:36,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:36,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:36,355 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 21:41:36,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:36,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016652721] [2022-07-22 21:41:36,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016652721] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:36,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:36,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:41:36,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754752468] [2022-07-22 21:41:36,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:36,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:41:36,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:36,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:41:36,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:41:36,361 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-22 21:41:36,365 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 533 transitions, 1263 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:36,365 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:36,365 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-22 21:41:36,365 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:37,393 INFO L129 PetriNetUnfolder]: 644/2573 cut-off events. [2022-07-22 21:41:37,393 INFO L130 PetriNetUnfolder]: For 312/333 co-relation queries the response was YES. [2022-07-22 21:41:37,415 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3902 conditions, 2573 events. 644/2573 cut-off events. For 312/333 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 20455 event pairs, 294 based on Foata normal form. 6/2393 useless extension candidates. Maximal degree in co-relation 3878. Up to 612 conditions per place. [2022-07-22 21:41:37,426 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 139 selfloop transitions, 30 changer transitions 24/634 dead transitions. [2022-07-22 21:41:37,427 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 634 transitions, 1888 flow [2022-07-22 21:41:37,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-22 21:41:37,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-22 21:41:37,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 10634 transitions. [2022-07-22 21:41:37,449 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7719221835075494 [2022-07-22 21:41:37,450 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 10634 transitions. [2022-07-22 21:41:37,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 10634 transitions. [2022-07-22 21:41:37,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:37,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 10634 transitions. [2022-07-22 21:41:37,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 443.0833333333333) internal successors, (10634), 24 states have internal predecessors, (10634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:37,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 574.0) internal successors, (14350), 25 states have internal predecessors, (14350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:37,546 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 574.0) internal successors, (14350), 25 states have internal predecessors, (14350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:37,546 INFO L186 Difference]: Start difference. First operand has 547 places, 533 transitions, 1263 flow. Second operand 24 states and 10634 transitions. [2022-07-22 21:41:37,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 634 transitions, 1888 flow [2022-07-22 21:41:37,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 634 transitions, 1852 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-07-22 21:41:37,557 INFO L242 Difference]: Finished difference. Result has 581 places, 562 transitions, 1443 flow [2022-07-22 21:41:37,558 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1227, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1443, PETRI_PLACES=581, PETRI_TRANSITIONS=562} [2022-07-22 21:41:37,559 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 58 predicate places. [2022-07-22 21:41:37,559 INFO L495 AbstractCegarLoop]: Abstraction has has 581 places, 562 transitions, 1443 flow [2022-07-22 21:41:37,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:37,560 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:37,560 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:37,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 21:41:37,561 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:37,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:37,561 INFO L85 PathProgramCache]: Analyzing trace with hash -584080018, now seen corresponding path program 2 times [2022-07-22 21:41:37,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:37,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773471079] [2022-07-22 21:41:37,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:37,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:37,813 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 21:41:37,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:37,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773471079] [2022-07-22 21:41:37,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773471079] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:37,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:37,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:41:37,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934980376] [2022-07-22 21:41:37,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:37,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:41:37,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:37,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:41:37,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:41:37,823 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-22 21:41:37,827 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 562 transitions, 1443 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:37,828 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:37,828 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-22 21:41:37,828 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:39,197 INFO L129 PetriNetUnfolder]: 1010/3765 cut-off events. [2022-07-22 21:41:39,198 INFO L130 PetriNetUnfolder]: For 3440/3489 co-relation queries the response was YES. [2022-07-22 21:41:39,246 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7973 conditions, 3765 events. 1010/3765 cut-off events. For 3440/3489 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 35332 event pairs, 498 based on Foata normal form. 1/3470 useless extension candidates. Maximal degree in co-relation 7929. Up to 937 conditions per place. [2022-07-22 21:41:39,263 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 172 selfloop transitions, 45 changer transitions 22/680 dead transitions. [2022-07-22 21:41:39,264 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 680 transitions, 2468 flow [2022-07-22 21:41:39,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-22 21:41:39,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-22 21:41:39,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 10631 transitions. [2022-07-22 21:41:39,276 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7717044134727061 [2022-07-22 21:41:39,276 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 10631 transitions. [2022-07-22 21:41:39,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 10631 transitions. [2022-07-22 21:41:39,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:39,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 10631 transitions. [2022-07-22 21:41:39,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 442.9583333333333) internal successors, (10631), 24 states have internal predecessors, (10631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:39,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 574.0) internal successors, (14350), 25 states have internal predecessors, (14350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:39,307 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 574.0) internal successors, (14350), 25 states have internal predecessors, (14350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:39,307 INFO L186 Difference]: Start difference. First operand has 581 places, 562 transitions, 1443 flow. Second operand 24 states and 10631 transitions. [2022-07-22 21:41:39,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 680 transitions, 2468 flow [2022-07-22 21:41:39,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 600 places, 680 transitions, 2458 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-07-22 21:41:39,413 INFO L242 Difference]: Finished difference. Result has 620 places, 591 transitions, 1853 flow [2022-07-22 21:41:39,415 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1439, PETRI_DIFFERENCE_MINUEND_PLACES=577, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1853, PETRI_PLACES=620, PETRI_TRANSITIONS=591} [2022-07-22 21:41:39,416 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 97 predicate places. [2022-07-22 21:41:39,416 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 591 transitions, 1853 flow [2022-07-22 21:41:39,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:39,417 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:39,417 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:39,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 21:41:39,418 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:39,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:39,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1345030594, now seen corresponding path program 3 times [2022-07-22 21:41:39,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:39,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490364940] [2022-07-22 21:41:39,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:39,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:39,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:39,631 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 21:41:39,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:39,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490364940] [2022-07-22 21:41:39,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490364940] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:39,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:39,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:41:39,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825155132] [2022-07-22 21:41:39,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:39,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:41:39,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:39,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:41:39,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:41:39,638 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-22 21:41:39,642 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 591 transitions, 1853 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:39,642 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:39,642 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-22 21:41:39,642 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:41,057 INFO L129 PetriNetUnfolder]: 1120/4338 cut-off events. [2022-07-22 21:41:41,057 INFO L130 PetriNetUnfolder]: For 9994/10027 co-relation queries the response was YES. [2022-07-22 21:41:41,125 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10951 conditions, 4338 events. 1120/4338 cut-off events. For 9994/10027 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 42657 event pairs, 590 based on Foata normal form. 5/4004 useless extension candidates. Maximal degree in co-relation 10888. Up to 1177 conditions per place. [2022-07-22 21:41:41,153 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 161 selfloop transitions, 56 changer transitions 20/678 dead transitions. [2022-07-22 21:41:41,154 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 678 transitions, 3057 flow [2022-07-22 21:41:41,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-22 21:41:41,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-22 21:41:41,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 9747 transitions. [2022-07-22 21:41:41,166 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7718561925879 [2022-07-22 21:41:41,166 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 9747 transitions. [2022-07-22 21:41:41,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 9747 transitions. [2022-07-22 21:41:41,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:41,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 9747 transitions. [2022-07-22 21:41:41,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 443.04545454545456) internal successors, (9747), 22 states have internal predecessors, (9747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:41,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 574.0) internal successors, (13202), 23 states have internal predecessors, (13202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:41,198 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 574.0) internal successors, (13202), 23 states have internal predecessors, (13202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:41,198 INFO L186 Difference]: Start difference. First operand has 620 places, 591 transitions, 1853 flow. Second operand 22 states and 9747 transitions. [2022-07-22 21:41:41,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 678 transitions, 3057 flow [2022-07-22 21:41:41,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 637 places, 678 transitions, 2919 flow, removed 69 selfloop flow, removed 2 redundant places. [2022-07-22 21:41:41,261 INFO L242 Difference]: Finished difference. Result has 651 places, 621 transitions, 2326 flow [2022-07-22 21:41:41,262 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1765, PETRI_DIFFERENCE_MINUEND_PLACES=616, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2326, PETRI_PLACES=651, PETRI_TRANSITIONS=621} [2022-07-22 21:41:41,262 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 128 predicate places. [2022-07-22 21:41:41,262 INFO L495 AbstractCegarLoop]: Abstraction has has 651 places, 621 transitions, 2326 flow [2022-07-22 21:41:41,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:41,263 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:41,264 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:41,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 21:41:41,264 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:41,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:41,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1665310844, now seen corresponding path program 4 times [2022-07-22 21:41:41,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:41,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065532372] [2022-07-22 21:41:41,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:41,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:41,470 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 21:41:41,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:41,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065532372] [2022-07-22 21:41:41,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065532372] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:41,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:41,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:41:41,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521044105] [2022-07-22 21:41:41,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:41,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:41:41,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:41,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:41:41,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:41:41,481 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-22 21:41:41,484 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 651 places, 621 transitions, 2326 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:41,485 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:41,485 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-22 21:41:41,485 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:43,096 INFO L129 PetriNetUnfolder]: 1273/4705 cut-off events. [2022-07-22 21:41:43,097 INFO L130 PetriNetUnfolder]: For 17970/18053 co-relation queries the response was YES. [2022-07-22 21:41:43,155 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13188 conditions, 4705 events. 1273/4705 cut-off events. For 17970/18053 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 47104 event pairs, 635 based on Foata normal form. 1/4336 useless extension candidates. Maximal degree in co-relation 13112. Up to 1186 conditions per place. [2022-07-22 21:41:43,184 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 179 selfloop transitions, 61 changer transitions 18/699 dead transitions. [2022-07-22 21:41:43,184 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 699 transitions, 3682 flow [2022-07-22 21:41:43,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 21:41:43,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-22 21:41:43,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 8871 transitions. [2022-07-22 21:41:43,194 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7727351916376307 [2022-07-22 21:41:43,194 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 8871 transitions. [2022-07-22 21:41:43,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 8871 transitions. [2022-07-22 21:41:43,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:43,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 8871 transitions. [2022-07-22 21:41:43,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 443.55) internal successors, (8871), 20 states have internal predecessors, (8871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:43,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 574.0) internal successors, (12054), 21 states have internal predecessors, (12054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:43,224 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 574.0) internal successors, (12054), 21 states have internal predecessors, (12054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:43,225 INFO L186 Difference]: Start difference. First operand has 651 places, 621 transitions, 2326 flow. Second operand 20 states and 8871 transitions. [2022-07-22 21:41:43,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 699 transitions, 3682 flow [2022-07-22 21:41:43,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 699 transitions, 3460 flow, removed 111 selfloop flow, removed 2 redundant places. [2022-07-22 21:41:43,316 INFO L242 Difference]: Finished difference. Result has 681 places, 653 transitions, 2844 flow [2022-07-22 21:41:43,318 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=2144, PETRI_DIFFERENCE_MINUEND_PLACES=647, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2844, PETRI_PLACES=681, PETRI_TRANSITIONS=653} [2022-07-22 21:41:43,318 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 158 predicate places. [2022-07-22 21:41:43,318 INFO L495 AbstractCegarLoop]: Abstraction has has 681 places, 653 transitions, 2844 flow [2022-07-22 21:41:43,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:43,319 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:43,320 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:43,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 21:41:43,320 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:43,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:43,321 INFO L85 PathProgramCache]: Analyzing trace with hash 781660482, now seen corresponding path program 5 times [2022-07-22 21:41:43,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:43,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307896258] [2022-07-22 21:41:43,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:43,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:43,574 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 21:41:43,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:43,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307896258] [2022-07-22 21:41:43,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307896258] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:43,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:43,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:41:43,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584703926] [2022-07-22 21:41:43,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:43,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:41:43,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:43,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:41:43,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:41:43,581 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-22 21:41:43,584 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 681 places, 653 transitions, 2844 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:43,584 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:43,584 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-22 21:41:43,584 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:45,299 INFO L129 PetriNetUnfolder]: 1312/5119 cut-off events. [2022-07-22 21:41:45,299 INFO L130 PetriNetUnfolder]: For 27053/27110 co-relation queries the response was YES. [2022-07-22 21:41:45,358 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15073 conditions, 5119 events. 1312/5119 cut-off events. For 27053/27110 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 53418 event pairs, 736 based on Foata normal form. 19/4743 useless extension candidates. Maximal degree in co-relation 14983. Up to 1361 conditions per place. [2022-07-22 21:41:45,384 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 198 selfloop transitions, 78 changer transitions 15/732 dead transitions. [2022-07-22 21:41:45,384 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 698 places, 732 transitions, 4359 flow [2022-07-22 21:41:45,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 21:41:45,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-22 21:41:45,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 8867 transitions. [2022-07-22 21:41:45,393 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7723867595818815 [2022-07-22 21:41:45,393 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 8867 transitions. [2022-07-22 21:41:45,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 8867 transitions. [2022-07-22 21:41:45,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:45,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 8867 transitions. [2022-07-22 21:41:45,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 443.35) internal successors, (8867), 20 states have internal predecessors, (8867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:45,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 574.0) internal successors, (12054), 21 states have internal predecessors, (12054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:45,418 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 574.0) internal successors, (12054), 21 states have internal predecessors, (12054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:45,419 INFO L186 Difference]: Start difference. First operand has 681 places, 653 transitions, 2844 flow. Second operand 20 states and 8867 transitions. [2022-07-22 21:41:45,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 698 places, 732 transitions, 4359 flow [2022-07-22 21:41:45,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 696 places, 732 transitions, 4003 flow, removed 178 selfloop flow, removed 2 redundant places. [2022-07-22 21:41:45,581 INFO L242 Difference]: Finished difference. Result has 711 places, 684 transitions, 3381 flow [2022-07-22 21:41:45,582 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=2618, PETRI_DIFFERENCE_MINUEND_PLACES=677, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3381, PETRI_PLACES=711, PETRI_TRANSITIONS=684} [2022-07-22 21:41:45,583 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 188 predicate places. [2022-07-22 21:41:45,584 INFO L495 AbstractCegarLoop]: Abstraction has has 711 places, 684 transitions, 3381 flow [2022-07-22 21:41:45,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:45,584 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:45,585 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:45,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 21:41:45,585 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:45,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:45,586 INFO L85 PathProgramCache]: Analyzing trace with hash -316243756, now seen corresponding path program 6 times [2022-07-22 21:41:45,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:45,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322550258] [2022-07-22 21:41:45,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:45,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:45,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:45,918 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 21:41:45,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:45,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322550258] [2022-07-22 21:41:45,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322550258] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:45,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:45,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:41:45,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356877566] [2022-07-22 21:41:45,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:45,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:41:45,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:45,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:41:45,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:41:45,924 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-22 21:41:45,927 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 711 places, 684 transitions, 3381 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:45,927 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:45,927 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-22 21:41:45,927 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:47,812 INFO L129 PetriNetUnfolder]: 1343/5300 cut-off events. [2022-07-22 21:41:47,812 INFO L130 PetriNetUnfolder]: For 30062/30137 co-relation queries the response was YES. [2022-07-22 21:41:47,880 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15952 conditions, 5300 events. 1343/5300 cut-off events. For 30062/30137 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 56504 event pairs, 674 based on Foata normal form. 20/4915 useless extension candidates. Maximal degree in co-relation 15848. Up to 1375 conditions per place. [2022-07-22 21:41:47,908 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 200 selfloop transitions, 96 changer transitions 13/750 dead transitions. [2022-07-22 21:41:47,908 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 726 places, 750 transitions, 4804 flow [2022-07-22 21:41:47,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-22 21:41:47,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-22 21:41:47,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7991 transitions. [2022-07-22 21:41:47,916 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7734223770809137 [2022-07-22 21:41:47,917 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7991 transitions. [2022-07-22 21:41:47,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7991 transitions. [2022-07-22 21:41:47,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:47,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7991 transitions. [2022-07-22 21:41:47,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 443.94444444444446) internal successors, (7991), 18 states have internal predecessors, (7991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:47,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 574.0) internal successors, (10906), 19 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:47,940 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 574.0) internal successors, (10906), 19 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:47,940 INFO L186 Difference]: Start difference. First operand has 711 places, 684 transitions, 3381 flow. Second operand 18 states and 7991 transitions. [2022-07-22 21:41:47,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 726 places, 750 transitions, 4804 flow [2022-07-22 21:41:48,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 724 places, 750 transitions, 4408 flow, removed 198 selfloop flow, removed 2 redundant places. [2022-07-22 21:41:48,137 INFO L242 Difference]: Finished difference. Result has 732 places, 705 transitions, 3756 flow [2022-07-22 21:41:48,138 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=3179, PETRI_DIFFERENCE_MINUEND_PLACES=707, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3756, PETRI_PLACES=732, PETRI_TRANSITIONS=705} [2022-07-22 21:41:48,138 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 209 predicate places. [2022-07-22 21:41:48,138 INFO L495 AbstractCegarLoop]: Abstraction has has 732 places, 705 transitions, 3756 flow [2022-07-22 21:41:48,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:48,139 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:48,139 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:48,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 21:41:48,140 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:48,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:48,140 INFO L85 PathProgramCache]: Analyzing trace with hash 211709358, now seen corresponding path program 7 times [2022-07-22 21:41:48,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:48,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278796149] [2022-07-22 21:41:48,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:48,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:48,434 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 21:41:48,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:48,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278796149] [2022-07-22 21:41:48,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278796149] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:48,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:48,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:41:48,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718889634] [2022-07-22 21:41:48,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:48,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:41:48,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:48,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:41:48,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:41:48,440 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-22 21:41:48,457 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 732 places, 705 transitions, 3756 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:48,457 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:48,457 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-22 21:41:48,457 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:50,287 INFO L129 PetriNetUnfolder]: 1412/5623 cut-off events. [2022-07-22 21:41:50,287 INFO L130 PetriNetUnfolder]: For 25365/25461 co-relation queries the response was YES. [2022-07-22 21:41:50,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16622 conditions, 5623 events. 1412/5623 cut-off events. For 25365/25461 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 60823 event pairs, 770 based on Foata normal form. 37/5232 useless extension candidates. Maximal degree in co-relation 16511. Up to 1425 conditions per place. [2022-07-22 21:41:50,390 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 210 selfloop transitions, 100 changer transitions 12/763 dead transitions. [2022-07-22 21:41:50,390 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 746 places, 763 transitions, 5057 flow [2022-07-22 21:41:50,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 21:41:50,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-22 21:41:50,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 7554 transitions. [2022-07-22 21:41:50,398 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.774134043861447 [2022-07-22 21:41:50,399 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 7554 transitions. [2022-07-22 21:41:50,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 7554 transitions. [2022-07-22 21:41:50,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:50,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 7554 transitions. [2022-07-22 21:41:50,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 444.3529411764706) internal successors, (7554), 17 states have internal predecessors, (7554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:50,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 574.0) internal successors, (10332), 18 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:50,420 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 574.0) internal successors, (10332), 18 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:50,421 INFO L186 Difference]: Start difference. First operand has 732 places, 705 transitions, 3756 flow. Second operand 17 states and 7554 transitions. [2022-07-22 21:41:50,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 746 places, 763 transitions, 5057 flow [2022-07-22 21:41:50,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 744 places, 763 transitions, 4915 flow, removed 71 selfloop flow, removed 2 redundant places. [2022-07-22 21:41:50,588 INFO L242 Difference]: Finished difference. Result has 753 places, 726 transitions, 4275 flow [2022-07-22 21:41:50,589 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=3648, PETRI_DIFFERENCE_MINUEND_PLACES=728, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=620, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4275, PETRI_PLACES=753, PETRI_TRANSITIONS=726} [2022-07-22 21:41:50,589 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 230 predicate places. [2022-07-22 21:41:50,589 INFO L495 AbstractCegarLoop]: Abstraction has has 753 places, 726 transitions, 4275 flow [2022-07-22 21:41:50,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:50,590 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:50,590 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:50,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 21:41:50,591 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:50,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:50,591 INFO L85 PathProgramCache]: Analyzing trace with hash -825348756, now seen corresponding path program 8 times [2022-07-22 21:41:50,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:50,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114950905] [2022-07-22 21:41:50,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:50,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:50,843 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 21:41:50,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:50,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114950905] [2022-07-22 21:41:50,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114950905] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:50,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:50,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:41:50,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239080142] [2022-07-22 21:41:50,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:50,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:41:50,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:50,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:41:50,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:41:50,851 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-22 21:41:50,854 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 753 places, 726 transitions, 4275 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:50,854 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:50,854 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-22 21:41:50,855 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:52,833 INFO L129 PetriNetUnfolder]: 1417/5665 cut-off events. [2022-07-22 21:41:52,833 INFO L130 PetriNetUnfolder]: For 27882/28023 co-relation queries the response was YES. [2022-07-22 21:41:52,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17282 conditions, 5665 events. 1417/5665 cut-off events. For 27882/28023 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 61804 event pairs, 690 based on Foata normal form. 62/5298 useless extension candidates. Maximal degree in co-relation 17163. Up to 1460 conditions per place. [2022-07-22 21:41:52,948 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 211 selfloop transitions, 107 changer transitions 15/774 dead transitions. [2022-07-22 21:41:52,948 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 766 places, 774 transitions, 5363 flow [2022-07-22 21:41:52,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 21:41:52,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-22 21:41:52,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 7114 transitions. [2022-07-22 21:41:52,955 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7746080139372822 [2022-07-22 21:41:52,955 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 7114 transitions. [2022-07-22 21:41:52,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 7114 transitions. [2022-07-22 21:41:52,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:52,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 7114 transitions. [2022-07-22 21:41:52,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 444.625) internal successors, (7114), 16 states have internal predecessors, (7114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:53,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 574.0) internal successors, (9758), 17 states have internal predecessors, (9758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:53,104 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 574.0) internal successors, (9758), 17 states have internal predecessors, (9758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:53,104 INFO L186 Difference]: Start difference. First operand has 753 places, 726 transitions, 4275 flow. Second operand 16 states and 7114 transitions. [2022-07-22 21:41:53,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 766 places, 774 transitions, 5363 flow [2022-07-22 21:41:53,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 764 places, 774 transitions, 5243 flow, removed 60 selfloop flow, removed 2 redundant places. [2022-07-22 21:41:53,293 INFO L242 Difference]: Finished difference. Result has 771 places, 734 transitions, 4563 flow [2022-07-22 21:41:53,294 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=4159, PETRI_DIFFERENCE_MINUEND_PLACES=749, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4563, PETRI_PLACES=771, PETRI_TRANSITIONS=734} [2022-07-22 21:41:53,295 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 248 predicate places. [2022-07-22 21:41:53,295 INFO L495 AbstractCegarLoop]: Abstraction has has 771 places, 734 transitions, 4563 flow [2022-07-22 21:41:53,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:53,295 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:53,296 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:53,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 21:41:53,296 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:53,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:53,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1591793836, now seen corresponding path program 9 times [2022-07-22 21:41:53,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:53,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763921444] [2022-07-22 21:41:53,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:53,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:53,540 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 21:41:53,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:53,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763921444] [2022-07-22 21:41:53,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763921444] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:53,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:53,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:41:53,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018759554] [2022-07-22 21:41:53,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:53,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:41:53,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:53,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:41:53,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:41:53,545 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-22 21:41:53,547 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 771 places, 734 transitions, 4563 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:53,547 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:53,547 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-22 21:41:53,547 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:55,691 INFO L129 PetriNetUnfolder]: 1462/5928 cut-off events. [2022-07-22 21:41:55,691 INFO L130 PetriNetUnfolder]: For 31510/31651 co-relation queries the response was YES. [2022-07-22 21:41:55,773 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18529 conditions, 5928 events. 1462/5928 cut-off events. For 31510/31651 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 65640 event pairs, 766 based on Foata normal form. 55/5550 useless extension candidates. Maximal degree in co-relation 18404. Up to 1388 conditions per place. [2022-07-22 21:41:55,795 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 244 selfloop transitions, 98 changer transitions 19/802 dead transitions. [2022-07-22 21:41:55,795 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 789 places, 802 transitions, 6129 flow [2022-07-22 21:41:55,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 21:41:55,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-22 21:41:55,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 9310 transitions. [2022-07-22 21:41:55,803 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7723577235772358 [2022-07-22 21:41:55,803 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 9310 transitions. [2022-07-22 21:41:55,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 9310 transitions. [2022-07-22 21:41:55,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:55,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 9310 transitions. [2022-07-22 21:41:55,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 443.3333333333333) internal successors, (9310), 21 states have internal predecessors, (9310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:55,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 574.0) internal successors, (12628), 22 states have internal predecessors, (12628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:55,825 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 574.0) internal successors, (12628), 22 states have internal predecessors, (12628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:55,825 INFO L186 Difference]: Start difference. First operand has 771 places, 734 transitions, 4563 flow. Second operand 21 states and 9310 transitions. [2022-07-22 21:41:55,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 789 places, 802 transitions, 6129 flow [2022-07-22 21:41:55,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 786 places, 802 transitions, 6016 flow, removed 34 selfloop flow, removed 3 redundant places. [2022-07-22 21:41:56,005 INFO L242 Difference]: Finished difference. Result has 800 places, 758 transitions, 5280 flow [2022-07-22 21:41:56,007 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=4482, PETRI_DIFFERENCE_MINUEND_PLACES=766, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=650, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5280, PETRI_PLACES=800, PETRI_TRANSITIONS=758} [2022-07-22 21:41:56,007 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 277 predicate places. [2022-07-22 21:41:56,007 INFO L495 AbstractCegarLoop]: Abstraction has has 800 places, 758 transitions, 5280 flow [2022-07-22 21:41:56,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:56,008 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:56,008 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:56,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 21:41:56,009 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:56,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:56,009 INFO L85 PathProgramCache]: Analyzing trace with hash 146240648, now seen corresponding path program 10 times [2022-07-22 21:41:56,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:56,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152713531] [2022-07-22 21:41:56,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:56,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:56,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:56,199 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 21:41:56,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:56,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152713531] [2022-07-22 21:41:56,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152713531] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:56,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:56,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:41:56,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744994880] [2022-07-22 21:41:56,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:56,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:41:56,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:56,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:41:56,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:41:56,205 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-22 21:41:56,207 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 800 places, 758 transitions, 5280 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:56,208 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:56,208 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-22 21:41:56,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:58,594 INFO L129 PetriNetUnfolder]: 1486/6033 cut-off events. [2022-07-22 21:41:58,594 INFO L130 PetriNetUnfolder]: For 36819/36978 co-relation queries the response was YES. [2022-07-22 21:41:58,680 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19668 conditions, 6033 events. 1486/6033 cut-off events. For 36819/36978 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 67344 event pairs, 782 based on Foata normal form. 64/5645 useless extension candidates. Maximal degree in co-relation 19531. Up to 1526 conditions per place. [2022-07-22 21:41:58,704 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 226 selfloop transitions, 120 changer transitions 16/803 dead transitions. [2022-07-22 21:41:58,705 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 815 places, 803 transitions, 6521 flow [2022-07-22 21:41:58,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-22 21:41:58,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-22 21:41:58,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7990 transitions. [2022-07-22 21:41:58,713 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7733255903987611 [2022-07-22 21:41:58,714 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7990 transitions. [2022-07-22 21:41:58,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7990 transitions. [2022-07-22 21:41:58,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:58,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7990 transitions. [2022-07-22 21:41:58,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 443.8888888888889) internal successors, (7990), 18 states have internal predecessors, (7990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:58,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 574.0) internal successors, (10906), 19 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:58,736 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 574.0) internal successors, (10906), 19 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:58,736 INFO L186 Difference]: Start difference. First operand has 800 places, 758 transitions, 5280 flow. Second operand 18 states and 7990 transitions. [2022-07-22 21:41:58,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 815 places, 803 transitions, 6521 flow [2022-07-22 21:41:59,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 813 places, 803 transitions, 6287 flow, removed 117 selfloop flow, removed 2 redundant places. [2022-07-22 21:41:59,017 INFO L242 Difference]: Finished difference. Result has 821 places, 772 transitions, 5660 flow [2022-07-22 21:41:59,019 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=5092, PETRI_DIFFERENCE_MINUEND_PLACES=796, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=646, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5660, PETRI_PLACES=821, PETRI_TRANSITIONS=772} [2022-07-22 21:41:59,020 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 298 predicate places. [2022-07-22 21:41:59,020 INFO L495 AbstractCegarLoop]: Abstraction has has 821 places, 772 transitions, 5660 flow [2022-07-22 21:41:59,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:59,021 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:59,021 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:59,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 21:41:59,022 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:59,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:59,023 INFO L85 PathProgramCache]: Analyzing trace with hash -816679436, now seen corresponding path program 11 times [2022-07-22 21:41:59,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:59,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757097213] [2022-07-22 21:41:59,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:59,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:59,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 21:41:59,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:59,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757097213] [2022-07-22 21:41:59,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757097213] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:59,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:59,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:41:59,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213514462] [2022-07-22 21:41:59,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:59,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:41:59,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:59,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:41:59,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:41:59,256 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-22 21:41:59,259 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 821 places, 772 transitions, 5660 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:59,260 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:59,260 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-22 21:41:59,260 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:01,497 INFO L129 PetriNetUnfolder]: 1517/6141 cut-off events. [2022-07-22 21:42:01,498 INFO L130 PetriNetUnfolder]: For 34891/35029 co-relation queries the response was YES. [2022-07-22 21:42:01,599 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20347 conditions, 6141 events. 1517/6141 cut-off events. For 34891/35029 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 69250 event pairs, 689 based on Foata normal form. 37/5716 useless extension candidates. Maximal degree in co-relation 20203. Up to 1559 conditions per place. [2022-07-22 21:42:01,620 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 256 selfloop transitions, 113 changer transitions 11/821 dead transitions. [2022-07-22 21:42:01,620 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 835 places, 821 transitions, 7049 flow [2022-07-22 21:42:01,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 21:42:01,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-22 21:42:01,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 7554 transitions. [2022-07-22 21:42:01,626 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.774134043861447 [2022-07-22 21:42:01,627 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 7554 transitions. [2022-07-22 21:42:01,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 7554 transitions. [2022-07-22 21:42:01,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:01,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 7554 transitions. [2022-07-22 21:42:01,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 444.3529411764706) internal successors, (7554), 17 states have internal predecessors, (7554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:01,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 574.0) internal successors, (10332), 18 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:01,644 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 574.0) internal successors, (10332), 18 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:01,644 INFO L186 Difference]: Start difference. First operand has 821 places, 772 transitions, 5660 flow. Second operand 17 states and 7554 transitions. [2022-07-22 21:42:01,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 835 places, 821 transitions, 7049 flow [2022-07-22 21:42:01,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 831 places, 821 transitions, 6882 flow, removed 34 selfloop flow, removed 4 redundant places. [2022-07-22 21:42:01,888 INFO L242 Difference]: Finished difference. Result has 839 places, 790 transitions, 6199 flow [2022-07-22 21:42:01,888 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=5505, PETRI_DIFFERENCE_MINUEND_PLACES=815, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=772, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=672, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6199, PETRI_PLACES=839, PETRI_TRANSITIONS=790} [2022-07-22 21:42:01,889 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 316 predicate places. [2022-07-22 21:42:01,889 INFO L495 AbstractCegarLoop]: Abstraction has has 839 places, 790 transitions, 6199 flow [2022-07-22 21:42:01,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:01,890 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:01,890 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:01,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 21:42:01,890 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:01,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:01,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1282102000, now seen corresponding path program 12 times [2022-07-22 21:42:01,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:01,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711342378] [2022-07-22 21:42:01,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:01,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:02,064 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 21:42:02,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:02,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711342378] [2022-07-22 21:42:02,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711342378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:02,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:02,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:42:02,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17265000] [2022-07-22 21:42:02,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:02,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:42:02,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:02,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:42:02,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:42:02,070 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-22 21:42:02,240 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 839 places, 790 transitions, 6199 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:02,240 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:02,240 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-22 21:42:02,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:04,804 INFO L129 PetriNetUnfolder]: 1516/6203 cut-off events. [2022-07-22 21:42:04,805 INFO L130 PetriNetUnfolder]: For 35862/36024 co-relation queries the response was YES. [2022-07-22 21:42:04,890 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20672 conditions, 6203 events. 1516/6203 cut-off events. For 35862/36024 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 70226 event pairs, 677 based on Foata normal form. 46/5792 useless extension candidates. Maximal degree in co-relation 20522. Up to 1546 conditions per place. [2022-07-22 21:42:04,909 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 254 selfloop transitions, 116 changer transitions 20/831 dead transitions. [2022-07-22 21:42:04,909 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 854 places, 831 transitions, 7390 flow [2022-07-22 21:42:04,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-22 21:42:04,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-22 21:42:04,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7994 transitions. [2022-07-22 21:42:04,913 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7737127371273713 [2022-07-22 21:42:04,914 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7994 transitions. [2022-07-22 21:42:04,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7994 transitions. [2022-07-22 21:42:04,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:04,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7994 transitions. [2022-07-22 21:42:04,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 444.1111111111111) internal successors, (7994), 18 states have internal predecessors, (7994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:04,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 574.0) internal successors, (10906), 19 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:04,926 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 574.0) internal successors, (10906), 19 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:04,926 INFO L186 Difference]: Start difference. First operand has 839 places, 790 transitions, 6199 flow. Second operand 18 states and 7994 transitions. [2022-07-22 21:42:04,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 854 places, 831 transitions, 7390 flow [2022-07-22 21:42:05,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 851 places, 831 transitions, 7174 flow, removed 83 selfloop flow, removed 3 redundant places. [2022-07-22 21:42:05,165 INFO L242 Difference]: Finished difference. Result has 858 places, 799 transitions, 6489 flow [2022-07-22 21:42:05,165 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=6015, PETRI_DIFFERENCE_MINUEND_PLACES=834, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=790, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=677, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6489, PETRI_PLACES=858, PETRI_TRANSITIONS=799} [2022-07-22 21:42:05,166 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 335 predicate places. [2022-07-22 21:42:05,166 INFO L495 AbstractCegarLoop]: Abstraction has has 858 places, 799 transitions, 6489 flow [2022-07-22 21:42:05,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:05,167 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:05,167 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:05,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 21:42:05,167 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:05,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:05,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1009102832, now seen corresponding path program 13 times [2022-07-22 21:42:05,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:05,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369096868] [2022-07-22 21:42:05,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:05,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:05,344 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 21:42:05,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:05,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369096868] [2022-07-22 21:42:05,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369096868] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:05,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:05,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:42:05,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600584291] [2022-07-22 21:42:05,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:05,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:42:05,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:05,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:42:05,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:42:05,350 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-22 21:42:05,352 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 858 places, 799 transitions, 6489 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:05,352 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:05,352 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-22 21:42:05,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:07,803 INFO L129 PetriNetUnfolder]: 1639/6436 cut-off events. [2022-07-22 21:42:07,803 INFO L130 PetriNetUnfolder]: For 45467/45721 co-relation queries the response was YES. [2022-07-22 21:42:07,909 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22418 conditions, 6436 events. 1639/6436 cut-off events. For 45467/45721 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 72940 event pairs, 649 based on Foata normal form. 32/6002 useless extension candidates. Maximal degree in co-relation 22263. Up to 1441 conditions per place. [2022-07-22 21:42:07,931 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 279 selfloop transitions, 143 changer transitions 19/882 dead transitions. [2022-07-22 21:42:07,931 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 877 places, 882 transitions, 8344 flow [2022-07-22 21:42:07,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-22 21:42:07,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-22 21:42:07,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 9745 transitions. [2022-07-22 21:42:07,935 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7716978143807413 [2022-07-22 21:42:07,936 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 9745 transitions. [2022-07-22 21:42:07,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 9745 transitions. [2022-07-22 21:42:07,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:07,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 9745 transitions. [2022-07-22 21:42:07,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 442.95454545454544) internal successors, (9745), 22 states have internal predecessors, (9745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:07,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 574.0) internal successors, (13202), 23 states have internal predecessors, (13202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:07,954 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 574.0) internal successors, (13202), 23 states have internal predecessors, (13202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:07,955 INFO L186 Difference]: Start difference. First operand has 858 places, 799 transitions, 6489 flow. Second operand 22 states and 9745 transitions. [2022-07-22 21:42:07,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 877 places, 882 transitions, 8344 flow [2022-07-22 21:42:08,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 874 places, 882 transitions, 8172 flow, removed 55 selfloop flow, removed 3 redundant places. [2022-07-22 21:42:08,239 INFO L242 Difference]: Finished difference. Result has 888 places, 831 transitions, 7363 flow [2022-07-22 21:42:08,240 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=6332, PETRI_DIFFERENCE_MINUEND_PLACES=853, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=799, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=677, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=7363, PETRI_PLACES=888, PETRI_TRANSITIONS=831} [2022-07-22 21:42:08,240 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 365 predicate places. [2022-07-22 21:42:08,240 INFO L495 AbstractCegarLoop]: Abstraction has has 888 places, 831 transitions, 7363 flow [2022-07-22 21:42:08,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:08,241 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:08,241 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:08,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 21:42:08,241 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:08,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:08,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1029494804, now seen corresponding path program 14 times [2022-07-22 21:42:08,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:08,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085917969] [2022-07-22 21:42:08,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:08,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:08,407 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 21:42:08,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:08,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085917969] [2022-07-22 21:42:08,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085917969] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:08,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:08,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:42:08,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191088171] [2022-07-22 21:42:08,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:08,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:42:08,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:08,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:42:08,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:42:08,414 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-22 21:42:08,417 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 888 places, 831 transitions, 7363 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:08,417 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:08,417 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-22 21:42:08,417 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:11,210 INFO L129 PetriNetUnfolder]: 1682/6638 cut-off events. [2022-07-22 21:42:11,210 INFO L130 PetriNetUnfolder]: For 52580/52858 co-relation queries the response was YES. [2022-07-22 21:42:11,336 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24171 conditions, 6638 events. 1682/6638 cut-off events. For 52580/52858 co-relation queries the response was YES. Maximal size of possible extension queue 746. Compared 76240 event pairs, 663 based on Foata normal form. 23/6169 useless extension candidates. Maximal degree in co-relation 24003. Up to 1463 conditions per place. [2022-07-22 21:42:11,567 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 332 selfloop transitions, 105 changer transitions 17/895 dead transitions. [2022-07-22 21:42:11,567 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 906 places, 895 transitions, 9138 flow [2022-07-22 21:42:11,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 21:42:11,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-22 21:42:11,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 9307 transitions. [2022-07-22 21:42:11,571 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7721088435374149 [2022-07-22 21:42:11,571 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 9307 transitions. [2022-07-22 21:42:11,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 9307 transitions. [2022-07-22 21:42:11,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:11,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 9307 transitions. [2022-07-22 21:42:11,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 443.1904761904762) internal successors, (9307), 21 states have internal predecessors, (9307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:11,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 574.0) internal successors, (12628), 22 states have internal predecessors, (12628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:11,592 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 574.0) internal successors, (12628), 22 states have internal predecessors, (12628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:11,592 INFO L186 Difference]: Start difference. First operand has 888 places, 831 transitions, 7363 flow. Second operand 21 states and 9307 transitions. [2022-07-22 21:42:11,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 906 places, 895 transitions, 9138 flow [2022-07-22 21:42:11,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 904 places, 895 transitions, 8964 flow, removed 87 selfloop flow, removed 2 redundant places. [2022-07-22 21:42:11,996 INFO L242 Difference]: Finished difference. Result has 918 places, 855 transitions, 8047 flow [2022-07-22 21:42:11,997 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=7203, PETRI_DIFFERENCE_MINUEND_PLACES=884, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=831, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=741, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=8047, PETRI_PLACES=918, PETRI_TRANSITIONS=855} [2022-07-22 21:42:11,998 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 395 predicate places. [2022-07-22 21:42:11,998 INFO L495 AbstractCegarLoop]: Abstraction has has 918 places, 855 transitions, 8047 flow [2022-07-22 21:42:11,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:11,998 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:11,999 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:11,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 21:42:11,999 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:11,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:12,000 INFO L85 PathProgramCache]: Analyzing trace with hash -693912916, now seen corresponding path program 15 times [2022-07-22 21:42:12,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:12,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391078517] [2022-07-22 21:42:12,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:12,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:12,186 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 21:42:12,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:12,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391078517] [2022-07-22 21:42:12,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391078517] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:12,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:12,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:42:12,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253589257] [2022-07-22 21:42:12,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:12,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:42:12,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:12,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:42:12,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:42:12,192 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-22 21:42:12,195 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 918 places, 855 transitions, 8047 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:12,195 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:12,195 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-22 21:42:12,195 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:14,985 INFO L129 PetriNetUnfolder]: 1715/6786 cut-off events. [2022-07-22 21:42:14,985 INFO L130 PetriNetUnfolder]: For 57337/57659 co-relation queries the response was YES. [2022-07-22 21:42:15,121 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25324 conditions, 6786 events. 1715/6786 cut-off events. For 57337/57659 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 78426 event pairs, 660 based on Foata normal form. 59/6356 useless extension candidates. Maximal degree in co-relation 25143. Up to 1529 conditions per place. [2022-07-22 21:42:15,150 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 300 selfloop transitions, 161 changer transitions 14/916 dead transitions. [2022-07-22 21:42:15,150 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 933 places, 916 transitions, 9717 flow [2022-07-22 21:42:15,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-22 21:42:15,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-22 21:42:15,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7991 transitions. [2022-07-22 21:42:15,155 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7734223770809137 [2022-07-22 21:42:15,155 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7991 transitions. [2022-07-22 21:42:15,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7991 transitions. [2022-07-22 21:42:15,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:15,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7991 transitions. [2022-07-22 21:42:15,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 443.94444444444446) internal successors, (7991), 18 states have internal predecessors, (7991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:15,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 574.0) internal successors, (10906), 19 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:15,176 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 574.0) internal successors, (10906), 19 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:15,177 INFO L186 Difference]: Start difference. First operand has 918 places, 855 transitions, 8047 flow. Second operand 18 states and 7991 transitions. [2022-07-22 21:42:15,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 933 places, 916 transitions, 9717 flow [2022-07-22 21:42:15,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 931 places, 916 transitions, 9537 flow, removed 90 selfloop flow, removed 2 redundant places. [2022-07-22 21:42:15,585 INFO L242 Difference]: Finished difference. Result has 939 places, 876 transitions, 8709 flow [2022-07-22 21:42:15,586 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=7869, PETRI_DIFFERENCE_MINUEND_PLACES=914, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=855, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=708, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8709, PETRI_PLACES=939, PETRI_TRANSITIONS=876} [2022-07-22 21:42:15,587 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 416 predicate places. [2022-07-22 21:42:15,587 INFO L495 AbstractCegarLoop]: Abstraction has has 939 places, 876 transitions, 8709 flow [2022-07-22 21:42:15,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:15,588 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:15,588 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:15,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 21:42:15,589 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:15,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:15,589 INFO L85 PathProgramCache]: Analyzing trace with hash -738031714, now seen corresponding path program 16 times [2022-07-22 21:42:15,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:15,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770530846] [2022-07-22 21:42:15,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:15,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:15,781 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 21:42:15,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:15,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770530846] [2022-07-22 21:42:15,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770530846] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:15,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:15,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:42:15,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681349737] [2022-07-22 21:42:15,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:15,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:42:15,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:15,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:42:15,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:42:15,788 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-22 21:42:15,791 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 939 places, 876 transitions, 8709 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:15,792 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:15,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-22 21:42:15,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:19,098 INFO L129 PetriNetUnfolder]: 1780/7381 cut-off events. [2022-07-22 21:42:19,098 INFO L130 PetriNetUnfolder]: For 64193/64518 co-relation queries the response was YES. [2022-07-22 21:42:19,269 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27447 conditions, 7381 events. 1780/7381 cut-off events. For 64193/64518 co-relation queries the response was YES. Maximal size of possible extension queue 810. Compared 87250 event pairs, 828 based on Foata normal form. 50/6911 useless extension candidates. Maximal degree in co-relation 27259. Up to 1565 conditions per place. [2022-07-22 21:42:19,305 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 342 selfloop transitions, 134 changer transitions 12/929 dead transitions. [2022-07-22 21:42:19,305 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 953 places, 929 transitions, 10419 flow [2022-07-22 21:42:19,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 21:42:19,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-22 21:42:19,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 7553 transitions. [2022-07-22 21:42:19,314 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7740315638450502 [2022-07-22 21:42:19,314 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 7553 transitions. [2022-07-22 21:42:19,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 7553 transitions. [2022-07-22 21:42:19,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:19,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 7553 transitions. [2022-07-22 21:42:19,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 444.29411764705884) internal successors, (7553), 17 states have internal predecessors, (7553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:19,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 574.0) internal successors, (10332), 18 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:19,333 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 574.0) internal successors, (10332), 18 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:19,333 INFO L186 Difference]: Start difference. First operand has 939 places, 876 transitions, 8709 flow. Second operand 17 states and 7553 transitions. [2022-07-22 21:42:19,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 953 places, 929 transitions, 10419 flow [2022-07-22 21:42:19,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 951 places, 929 transitions, 10201 flow, removed 109 selfloop flow, removed 2 redundant places. [2022-07-22 21:42:19,780 INFO L242 Difference]: Finished difference. Result has 960 places, 897 transitions, 9341 flow [2022-07-22 21:42:19,782 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=8535, PETRI_DIFFERENCE_MINUEND_PLACES=935, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=876, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=757, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9341, PETRI_PLACES=960, PETRI_TRANSITIONS=897} [2022-07-22 21:42:19,782 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 437 predicate places. [2022-07-22 21:42:19,782 INFO L495 AbstractCegarLoop]: Abstraction has has 960 places, 897 transitions, 9341 flow [2022-07-22 21:42:19,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:19,783 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:19,783 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:19,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-22 21:42:19,784 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:19,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:19,784 INFO L85 PathProgramCache]: Analyzing trace with hash 783047828, now seen corresponding path program 17 times [2022-07-22 21:42:19,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:19,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986474316] [2022-07-22 21:42:19,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:19,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:19,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:19,954 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 21:42:19,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:19,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986474316] [2022-07-22 21:42:19,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986474316] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:19,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:19,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:42:19,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039307079] [2022-07-22 21:42:19,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:19,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:42:19,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:19,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:42:19,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:42:19,960 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-22 21:42:19,962 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 960 places, 897 transitions, 9341 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:19,963 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:19,963 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-22 21:42:19,963 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand