./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-prod-cons-eq.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 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:40:46,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:40:46,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:40:46,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:40:46,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:40:46,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:40:46,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:40:46,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:40:46,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:40:46,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:40:46,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:40:46,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:40:46,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:40:46,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:40:46,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:40:46,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:40:46,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:40:46,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:40:46,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:40:46,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:40:46,591 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:40:46,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:40:46,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:40:46,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:40:46,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:40:46,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:40:46,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:40:46,608 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:40:46,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:40:46,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:40:46,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:40:46,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:40:46,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:40:46,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:40:46,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:40:46,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:40:46,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:40:46,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:40:46,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:40:46,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:40:46,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:40:46,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:40:46,616 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:40:46,638 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:40:46,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:40:46,639 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:40:46,639 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:40:46,639 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:40:46,640 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:40:46,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:40:46,640 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:40:46,640 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:40:46,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:40:46,641 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:40:46,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:40:46,641 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:40:46,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:40:46,642 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:40:46,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:40:46,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:40:46,642 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:40:46,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:40:46,642 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:40:46,643 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:40:46,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:40:46,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:40:46,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:40:46,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:40:46,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:40:46,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:40:46,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:40:46,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:40:46,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:40:46,644 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:40:46,644 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:40:46,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:40:46,645 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 [2022-07-19 21:40:46,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:40:46,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:40:46,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:40:46,843 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:40:46,843 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:40:46,844 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2022-07-19 21:40:46,893 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/431b9ee11/3ac4c856608341a0a52cd8fb6d73344c/FLAGbfc31ef73 [2022-07-19 21:40:47,277 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:40:47,279 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2022-07-19 21:40:47,284 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/431b9ee11/3ac4c856608341a0a52cd8fb6d73344c/FLAGbfc31ef73 [2022-07-19 21:40:47,295 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/431b9ee11/3ac4c856608341a0a52cd8fb6d73344c [2022-07-19 21:40:47,297 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:40:47,298 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:40:47,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:40:47,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:40:47,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:40:47,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:40:47" (1/1) ... [2022-07-19 21:40:47,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5da0778a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:40:47, skipping insertion in model container [2022-07-19 21:40:47,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:40:47" (1/1) ... [2022-07-19 21:40:47,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:40:47,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:40:47,482 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/popl20-prod-cons-eq.wvr.c[4380,4393] [2022-07-19 21:40:47,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:40:47,501 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:40:47,524 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/popl20-prod-cons-eq.wvr.c[4380,4393] [2022-07-19 21:40:47,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:40:47,536 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:40:47,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:40:47 WrapperNode [2022-07-19 21:40:47,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:40:47,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:40:47,541 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:40:47,541 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:40:47,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:40:47" (1/1) ... [2022-07-19 21:40:47,576 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:40:47" (1/1) ... [2022-07-19 21:40:47,610 INFO L137 Inliner]: procedures = 28, calls = 80, calls flagged for inlining = 26, calls inlined = 32, statements flattened = 393 [2022-07-19 21:40:47,612 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:40:47,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:40:47,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:40:47,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:40:47,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:40:47" (1/1) ... [2022-07-19 21:40:47,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:40:47" (1/1) ... [2022-07-19 21:40:47,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:40:47" (1/1) ... [2022-07-19 21:40:47,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:40:47" (1/1) ... [2022-07-19 21:40:47,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:40:47" (1/1) ... [2022-07-19 21:40:47,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:40:47" (1/1) ... [2022-07-19 21:40:47,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:40:47" (1/1) ... [2022-07-19 21:40:47,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:40:47,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:40:47,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:40:47,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:40:47,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:40:47" (1/1) ... [2022-07-19 21:40:47,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:40:47,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:40:47,673 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 21:40:47,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:40:47,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 21:40:47,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:40:47,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:40:47,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:40:47,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 21:40:47,697 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:40:47,698 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:40:47,698 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:40:47,699 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:40:47,699 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-19 21:40:47,699 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-19 21:40:47,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:40:47,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-19 21:40:47,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-19 21:40:47,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 21:40:47,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:40:47,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:40:47,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:40:47,701 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:40:47,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 21:40:47,863 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:40:47,864 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:40:48,329 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:40:48,444 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:40:48,445 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-07-19 21:40:48,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:40:48 BoogieIcfgContainer [2022-07-19 21:40:48,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:40:48,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:40:48,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:40:48,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:40:48,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:40:47" (1/3) ... [2022-07-19 21:40:48,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55c82aa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:40:48, skipping insertion in model container [2022-07-19 21:40:48,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:40:47" (2/3) ... [2022-07-19 21:40:48,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55c82aa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:40:48, skipping insertion in model container [2022-07-19 21:40:48,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:40:48" (3/3) ... [2022-07-19 21:40:48,454 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2022-07-19 21:40:48,462 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:40:48,468 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:40:48,469 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:40:48,469 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:40:48,551 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-19 21:40:48,597 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 387 places, 414 transitions, 852 flow [2022-07-19 21:40:48,728 INFO L129 PetriNetUnfolder]: 37/411 cut-off events. [2022-07-19 21:40:48,728 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:40:48,733 INFO L84 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 411 events. 37/411 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 429 event pairs, 0 based on Foata normal form. 0/373 useless extension candidates. Maximal degree in co-relation 324. Up to 2 conditions per place. [2022-07-19 21:40:48,733 INFO L82 GeneralOperation]: Start removeDead. Operand has 387 places, 414 transitions, 852 flow [2022-07-19 21:40:48,742 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 373 places, 400 transitions, 818 flow [2022-07-19 21:40:48,752 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:40:48,758 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@655314ee, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@59be0ade [2022-07-19 21:40:48,758 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-19 21:40:48,830 INFO L129 PetriNetUnfolder]: 35/381 cut-off events. [2022-07-19 21:40:48,830 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:40:48,830 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:40:48,831 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] [2022-07-19 21:40:48,832 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:40:48,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:40:48,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1718121416, now seen corresponding path program 1 times [2022-07-19 21:40:48,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:40:48,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175057150] [2022-07-19 21:40:48,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:40:48,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:40:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:40:49,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:40:49,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:40:49,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175057150] [2022-07-19 21:40:49,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175057150] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:40:49,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:40:49,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 21:40:49,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279559042] [2022-07-19 21:40:49,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:40:49,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 21:40:49,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:40:49,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 21:40:49,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 21:40:49,117 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 377 out of 414 [2022-07-19 21:40:49,124 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 400 transitions, 818 flow. Second operand has 2 states, 2 states have (on average 382.0) internal successors, (764), 2 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:49,124 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:40:49,124 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 377 of 414 [2022-07-19 21:40:49,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:40:49,201 INFO L129 PetriNetUnfolder]: 25/439 cut-off events. [2022-07-19 21:40:49,202 INFO L130 PetriNetUnfolder]: For 22/23 co-relation queries the response was YES. [2022-07-19 21:40:49,205 INFO L84 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 439 events. 25/439 cut-off events. For 22/23 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 818 event pairs, 7 based on Foata normal form. 51/449 useless extension candidates. Maximal degree in co-relation 342. Up to 31 conditions per place. [2022-07-19 21:40:49,206 INFO L132 encePairwiseOnDemand]: 387/414 looper letters, 9 selfloop transitions, 0 changer transitions 13/373 dead transitions. [2022-07-19 21:40:49,207 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 373 transitions, 782 flow [2022-07-19 21:40:49,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 21:40:49,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-19 21:40:49,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 790 transitions. [2022-07-19 21:40:49,236 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9541062801932367 [2022-07-19 21:40:49,237 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 790 transitions. [2022-07-19 21:40:49,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 790 transitions. [2022-07-19 21:40:49,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:40:49,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 790 transitions. [2022-07-19 21:40:49,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 395.0) internal successors, (790), 2 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:49,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 414.0) internal successors, (1242), 3 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:49,254 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 414.0) internal successors, (1242), 3 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:49,255 INFO L186 Difference]: Start difference. First operand has 373 places, 400 transitions, 818 flow. Second operand 2 states and 790 transitions. [2022-07-19 21:40:49,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 373 transitions, 782 flow [2022-07-19 21:40:49,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 373 transitions, 770 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-19 21:40:49,267 INFO L242 Difference]: Finished difference. Result has 368 places, 360 transitions, 726 flow [2022-07-19 21:40:49,269 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=726, PETRI_PLACES=368, PETRI_TRANSITIONS=360} [2022-07-19 21:40:49,272 INFO L279 CegarLoopForPetriNet]: 373 programPoint places, -5 predicate places. [2022-07-19 21:40:49,272 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 360 transitions, 726 flow [2022-07-19 21:40:49,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 382.0) internal successors, (764), 2 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:49,273 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:40:49,273 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] [2022-07-19 21:40:49,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:40:49,274 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:40:49,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:40:49,274 INFO L85 PathProgramCache]: Analyzing trace with hash -2065661086, now seen corresponding path program 1 times [2022-07-19 21:40:49,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:40:49,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632535315] [2022-07-19 21:40:49,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:40:49,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:40:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:40:49,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:40:49,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:40:49,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632535315] [2022-07-19 21:40:49,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632535315] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:40:49,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:40:49,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:40:49,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465795725] [2022-07-19 21:40:49,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:40:49,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:40:49,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:40:49,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:40:49,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:40:49,503 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 373 out of 414 [2022-07-19 21:40:49,504 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 360 transitions, 726 flow. Second operand has 3 states, 3 states have (on average 375.6666666666667) internal successors, (1127), 3 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:49,505 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:40:49,505 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 373 of 414 [2022-07-19 21:40:49,505 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:40:49,671 INFO L129 PetriNetUnfolder]: 100/1156 cut-off events. [2022-07-19 21:40:49,671 INFO L130 PetriNetUnfolder]: For 21/23 co-relation queries the response was YES. [2022-07-19 21:40:49,674 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1288 conditions, 1156 events. 100/1156 cut-off events. For 21/23 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4726 event pairs, 15 based on Foata normal form. 0/1049 useless extension candidates. Maximal degree in co-relation 1285. Up to 72 conditions per place. [2022-07-19 21:40:49,676 INFO L132 encePairwiseOnDemand]: 411/414 looper letters, 18 selfloop transitions, 2 changer transitions 0/367 dead transitions. [2022-07-19 21:40:49,677 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 367 transitions, 782 flow [2022-07-19 21:40:49,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:40:49,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:40:49,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1140 transitions. [2022-07-19 21:40:49,679 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9178743961352657 [2022-07-19 21:40:49,679 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1140 transitions. [2022-07-19 21:40:49,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1140 transitions. [2022-07-19 21:40:49,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:40:49,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1140 transitions. [2022-07-19 21:40:49,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 380.0) internal successors, (1140), 3 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:49,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:49,684 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:49,685 INFO L186 Difference]: Start difference. First operand has 368 places, 360 transitions, 726 flow. Second operand 3 states and 1140 transitions. [2022-07-19 21:40:49,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 367 transitions, 782 flow [2022-07-19 21:40:49,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 367 transitions, 782 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:40:49,690 INFO L242 Difference]: Finished difference. Result has 358 places, 361 transitions, 738 flow [2022-07-19 21:40:49,690 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=738, PETRI_PLACES=358, PETRI_TRANSITIONS=361} [2022-07-19 21:40:49,691 INFO L279 CegarLoopForPetriNet]: 373 programPoint places, -15 predicate places. [2022-07-19 21:40:49,691 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 361 transitions, 738 flow [2022-07-19 21:40:49,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 375.6666666666667) internal successors, (1127), 3 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:49,692 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:40:49,692 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] [2022-07-19 21:40:49,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:40:49,692 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:40:49,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:40:49,693 INFO L85 PathProgramCache]: Analyzing trace with hash 696268907, now seen corresponding path program 1 times [2022-07-19 21:40:49,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:40:49,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727235574] [2022-07-19 21:40:49,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:40:49,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:40:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:40:49,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:40:49,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:40:49,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727235574] [2022-07-19 21:40:49,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727235574] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:40:49,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:40:49,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:40:49,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387973607] [2022-07-19 21:40:49,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:40:49,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:40:49,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:40:49,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:40:49,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:40:49,874 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 372 out of 414 [2022-07-19 21:40:49,875 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 361 transitions, 738 flow. Second operand has 3 states, 3 states have (on average 375.0) internal successors, (1125), 3 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:49,886 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:40:49,886 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 372 of 414 [2022-07-19 21:40:49,887 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:40:49,988 INFO L129 PetriNetUnfolder]: 83/651 cut-off events. [2022-07-19 21:40:49,989 INFO L130 PetriNetUnfolder]: For 6/30 co-relation queries the response was YES. [2022-07-19 21:40:49,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 819 conditions, 651 events. 83/651 cut-off events. For 6/30 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1916 event pairs, 18 based on Foata normal form. 1/599 useless extension candidates. Maximal degree in co-relation 814. Up to 84 conditions per place. [2022-07-19 21:40:49,994 INFO L132 encePairwiseOnDemand]: 411/414 looper letters, 20 selfloop transitions, 2 changer transitions 0/369 dead transitions. [2022-07-19 21:40:49,994 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 369 transitions, 800 flow [2022-07-19 21:40:49,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:40:49,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:40:49,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1139 transitions. [2022-07-19 21:40:49,997 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9170692431561996 [2022-07-19 21:40:49,997 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1139 transitions. [2022-07-19 21:40:49,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1139 transitions. [2022-07-19 21:40:49,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:40:49,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1139 transitions. [2022-07-19 21:40:50,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 379.6666666666667) internal successors, (1139), 3 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:50,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:50,003 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:50,003 INFO L186 Difference]: Start difference. First operand has 358 places, 361 transitions, 738 flow. Second operand 3 states and 1139 transitions. [2022-07-19 21:40:50,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 369 transitions, 800 flow [2022-07-19 21:40:50,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 369 transitions, 798 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:40:50,009 INFO L242 Difference]: Finished difference. Result has 360 places, 362 transitions, 748 flow [2022-07-19 21:40:50,009 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=748, PETRI_PLACES=360, PETRI_TRANSITIONS=362} [2022-07-19 21:40:50,011 INFO L279 CegarLoopForPetriNet]: 373 programPoint places, -13 predicate places. [2022-07-19 21:40:50,011 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 362 transitions, 748 flow [2022-07-19 21:40:50,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 375.0) internal successors, (1125), 3 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:50,012 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:40:50,012 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] [2022-07-19 21:40:50,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:40:50,013 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:40:50,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:40:50,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1655319651, now seen corresponding path program 1 times [2022-07-19 21:40:50,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:40:50,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485631639] [2022-07-19 21:40:50,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:40:50,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:40:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:40:50,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:40:50,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:40:50,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485631639] [2022-07-19 21:40:50,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485631639] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:40:50,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:40:50,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:40:50,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886092774] [2022-07-19 21:40:50,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:40:50,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:40:50,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:40:50,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:40:50,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:40:50,165 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 414 [2022-07-19 21:40:50,168 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 362 transitions, 748 flow. Second operand has 6 states, 6 states have (on average 331.8333333333333) internal successors, (1991), 6 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:50,168 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:40:50,168 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 414 [2022-07-19 21:40:50,168 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:40:50,470 INFO L129 PetriNetUnfolder]: 97/1054 cut-off events. [2022-07-19 21:40:50,470 INFO L130 PetriNetUnfolder]: For 32/42 co-relation queries the response was YES. [2022-07-19 21:40:50,473 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1342 conditions, 1054 events. 97/1054 cut-off events. For 32/42 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4001 event pairs, 48 based on Foata normal form. 9/969 useless extension candidates. Maximal degree in co-relation 1336. Up to 155 conditions per place. [2022-07-19 21:40:50,476 INFO L132 encePairwiseOnDemand]: 404/414 looper letters, 57 selfloop transitions, 8 changer transitions 42/408 dead transitions. [2022-07-19 21:40:50,477 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 408 transitions, 1057 flow [2022-07-19 21:40:50,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:40:50,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:40:50,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3041 transitions. [2022-07-19 21:40:50,483 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8161567364465915 [2022-07-19 21:40:50,485 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3041 transitions. [2022-07-19 21:40:50,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3041 transitions. [2022-07-19 21:40:50,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:40:50,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3041 transitions. [2022-07-19 21:40:50,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 337.8888888888889) internal successors, (3041), 9 states have internal predecessors, (3041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:50,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 414.0) internal successors, (4140), 10 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:50,498 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 414.0) internal successors, (4140), 10 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:50,498 INFO L186 Difference]: Start difference. First operand has 360 places, 362 transitions, 748 flow. Second operand 9 states and 3041 transitions. [2022-07-19 21:40:50,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 408 transitions, 1057 flow [2022-07-19 21:40:50,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 408 transitions, 1055 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:40:50,509 INFO L242 Difference]: Finished difference. Result has 369 places, 363 transitions, 774 flow [2022-07-19 21:40:50,509 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=774, PETRI_PLACES=369, PETRI_TRANSITIONS=363} [2022-07-19 21:40:50,511 INFO L279 CegarLoopForPetriNet]: 373 programPoint places, -4 predicate places. [2022-07-19 21:40:50,511 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 363 transitions, 774 flow [2022-07-19 21:40:50,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 331.8333333333333) internal successors, (1991), 6 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:50,512 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:40:50,512 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] [2022-07-19 21:40:50,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:40:50,512 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:40:50,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:40:50,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1755528069, now seen corresponding path program 1 times [2022-07-19 21:40:50,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:40:50,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304659169] [2022-07-19 21:40:50,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:40:50,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:40:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:40:50,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:40:50,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:40:50,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304659169] [2022-07-19 21:40:50,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304659169] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:40:50,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:40:50,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:40:50,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527672529] [2022-07-19 21:40:50,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:40:50,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:40:50,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:40:50,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:40:50,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:40:50,628 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 414 [2022-07-19 21:40:50,630 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 363 transitions, 774 flow. Second operand has 6 states, 6 states have (on average 333.3333333333333) internal successors, (2000), 6 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:50,630 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:40:50,630 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 414 [2022-07-19 21:40:50,630 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:40:50,931 INFO L129 PetriNetUnfolder]: 79/1249 cut-off events. [2022-07-19 21:40:50,931 INFO L130 PetriNetUnfolder]: For 64/84 co-relation queries the response was YES. [2022-07-19 21:40:50,936 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1548 conditions, 1249 events. 79/1249 cut-off events. For 64/84 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 5169 event pairs, 34 based on Foata normal form. 10/1162 useless extension candidates. Maximal degree in co-relation 1540. Up to 95 conditions per place. [2022-07-19 21:40:50,940 INFO L132 encePairwiseOnDemand]: 403/414 looper letters, 69 selfloop transitions, 8 changer transitions 21/400 dead transitions. [2022-07-19 21:40:50,940 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 400 transitions, 1062 flow [2022-07-19 21:40:50,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:40:50,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:40:50,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3042 transitions. [2022-07-19 21:40:50,946 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8164251207729468 [2022-07-19 21:40:50,946 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3042 transitions. [2022-07-19 21:40:50,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3042 transitions. [2022-07-19 21:40:50,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:40:50,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3042 transitions. [2022-07-19 21:40:50,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 338.0) internal successors, (3042), 9 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:50,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 414.0) internal successors, (4140), 10 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:50,960 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 414.0) internal successors, (4140), 10 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:50,961 INFO L186 Difference]: Start difference. First operand has 369 places, 363 transitions, 774 flow. Second operand 9 states and 3042 transitions. [2022-07-19 21:40:50,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 400 transitions, 1062 flow [2022-07-19 21:40:50,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 400 transitions, 1042 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-07-19 21:40:50,974 INFO L242 Difference]: Finished difference. Result has 375 places, 366 transitions, 808 flow [2022-07-19 21:40:50,975 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=808, PETRI_PLACES=375, PETRI_TRANSITIONS=366} [2022-07-19 21:40:50,975 INFO L279 CegarLoopForPetriNet]: 373 programPoint places, 2 predicate places. [2022-07-19 21:40:50,976 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 366 transitions, 808 flow [2022-07-19 21:40:50,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 333.3333333333333) internal successors, (2000), 6 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:50,976 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:40:50,977 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] [2022-07-19 21:40:50,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:40:50,977 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:40:50,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:40:50,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1465524326, now seen corresponding path program 1 times [2022-07-19 21:40:50,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:40:50,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267773772] [2022-07-19 21:40:50,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:40:50,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:40:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:40:51,148 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 21:40:51,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:40:51,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267773772] [2022-07-19 21:40:51,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267773772] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:40:51,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133558441] [2022-07-19 21:40:51,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:40:51,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:40:51,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:40:51,164 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:40:51,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 21:40:51,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:40:51,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 21:40:51,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:40:51,444 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 21:40:51,444 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:40:51,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133558441] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:40:51,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:40:51,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-07-19 21:40:51,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227513393] [2022-07-19 21:40:51,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:40:51,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:40:51,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:40:51,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:40:51,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:40:51,448 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 352 out of 414 [2022-07-19 21:40:51,451 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 366 transitions, 808 flow. Second operand has 5 states, 5 states have (on average 357.4) internal successors, (1787), 5 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:51,451 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:40:51,451 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 352 of 414 [2022-07-19 21:40:51,451 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:40:52,528 INFO L129 PetriNetUnfolder]: 2638/5809 cut-off events. [2022-07-19 21:40:52,529 INFO L130 PetriNetUnfolder]: For 5921/5929 co-relation queries the response was YES. [2022-07-19 21:40:52,544 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13709 conditions, 5809 events. 2638/5809 cut-off events. For 5921/5929 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 38471 event pairs, 1154 based on Foata normal form. 0/5454 useless extension candidates. Maximal degree in co-relation 13696. Up to 2745 conditions per place. [2022-07-19 21:40:52,593 INFO L132 encePairwiseOnDemand]: 406/414 looper letters, 30 selfloop transitions, 0 changer transitions 33/394 dead transitions. [2022-07-19 21:40:52,594 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 394 transitions, 1046 flow [2022-07-19 21:40:52,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:40:52,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:40:52,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2171 transitions. [2022-07-19 21:40:52,597 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8739935587761675 [2022-07-19 21:40:52,597 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2171 transitions. [2022-07-19 21:40:52,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2171 transitions. [2022-07-19 21:40:52,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:40:52,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2171 transitions. [2022-07-19 21:40:52,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 361.8333333333333) internal successors, (2171), 6 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:52,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 414.0) internal successors, (2898), 7 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:52,605 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 414.0) internal successors, (2898), 7 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:52,605 INFO L186 Difference]: Start difference. First operand has 375 places, 366 transitions, 808 flow. Second operand 6 states and 2171 transitions. [2022-07-19 21:40:52,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 394 transitions, 1046 flow [2022-07-19 21:40:52,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 394 transitions, 1034 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-07-19 21:40:52,613 INFO L242 Difference]: Finished difference. Result has 377 places, 361 transitions, 792 flow [2022-07-19 21:40:52,615 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=792, PETRI_PLACES=377, PETRI_TRANSITIONS=361} [2022-07-19 21:40:52,617 INFO L279 CegarLoopForPetriNet]: 373 programPoint places, 4 predicate places. [2022-07-19 21:40:52,617 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 361 transitions, 792 flow [2022-07-19 21:40:52,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 357.4) internal successors, (1787), 5 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:52,618 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:40:52,618 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] [2022-07-19 21:40:52,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 21:40:52,831 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 [2022-07-19 21:40:52,832 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:40:52,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:40:52,833 INFO L85 PathProgramCache]: Analyzing trace with hash 48024263, now seen corresponding path program 1 times [2022-07-19 21:40:52,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:40:52,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984046078] [2022-07-19 21:40:52,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:40:52,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:40:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:40:52,929 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:40:52,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:40:52,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984046078] [2022-07-19 21:40:52,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984046078] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:40:52,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:40:52,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:40:52,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821676670] [2022-07-19 21:40:52,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:40:52,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:40:52,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:40:52,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:40:52,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:40:52,932 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 414 [2022-07-19 21:40:52,934 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 361 transitions, 792 flow. Second operand has 4 states, 4 states have (on average 372.5) internal successors, (1490), 4 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:52,934 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:40:52,934 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 414 [2022-07-19 21:40:52,934 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:40:53,370 INFO L129 PetriNetUnfolder]: 346/2903 cut-off events. [2022-07-19 21:40:53,370 INFO L130 PetriNetUnfolder]: For 280/296 co-relation queries the response was YES. [2022-07-19 21:40:53,385 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4079 conditions, 2903 events. 346/2903 cut-off events. For 280/296 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 19341 event pairs, 84 based on Foata normal form. 10/2764 useless extension candidates. Maximal degree in co-relation 4064. Up to 365 conditions per place. [2022-07-19 21:40:53,397 INFO L132 encePairwiseOnDemand]: 407/414 looper letters, 26 selfloop transitions, 10 changer transitions 0/379 dead transitions. [2022-07-19 21:40:53,397 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 379 transitions, 930 flow [2022-07-19 21:40:53,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 21:40:53,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-19 21:40:53,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1510 transitions. [2022-07-19 21:40:53,400 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9118357487922706 [2022-07-19 21:40:53,401 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1510 transitions. [2022-07-19 21:40:53,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1510 transitions. [2022-07-19 21:40:53,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:40:53,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1510 transitions. [2022-07-19 21:40:53,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 377.5) internal successors, (1510), 4 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:53,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 414.0) internal successors, (2070), 5 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:53,416 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 414.0) internal successors, (2070), 5 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:53,416 INFO L186 Difference]: Start difference. First operand has 377 places, 361 transitions, 792 flow. Second operand 4 states and 1510 transitions. [2022-07-19 21:40:53,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 379 transitions, 930 flow [2022-07-19 21:40:53,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 379 transitions, 914 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-07-19 21:40:53,424 INFO L242 Difference]: Finished difference. Result has 370 places, 369 transitions, 855 flow [2022-07-19 21:40:53,424 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=855, PETRI_PLACES=370, PETRI_TRANSITIONS=369} [2022-07-19 21:40:53,425 INFO L279 CegarLoopForPetriNet]: 373 programPoint places, -3 predicate places. [2022-07-19 21:40:53,425 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 369 transitions, 855 flow [2022-07-19 21:40:53,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 372.5) internal successors, (1490), 4 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:53,425 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:40:53,425 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] [2022-07-19 21:40:53,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:40:53,426 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:40:53,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:40:53,427 INFO L85 PathProgramCache]: Analyzing trace with hash -688701689, now seen corresponding path program 2 times [2022-07-19 21:40:53,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:40:53,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783826311] [2022-07-19 21:40:53,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:40:53,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:40:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:40:53,545 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 21:40:53,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:40:53,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783826311] [2022-07-19 21:40:53,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783826311] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:40:53,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612627639] [2022-07-19 21:40:53,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 21:40:53,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:40:53,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:40:53,547 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:40:53,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 21:40:53,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 21:40:53,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:40:53,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 21:40:53,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:40:53,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 21:40:53,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:40:53,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612627639] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:40:53,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:40:53,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2022-07-19 21:40:53,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929463893] [2022-07-19 21:40:53,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:40:53,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:40:53,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:40:53,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:40:53,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:40:53,949 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 372 out of 414 [2022-07-19 21:40:53,950 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 369 transitions, 855 flow. Second operand has 5 states, 5 states have (on average 374.2) internal successors, (1871), 5 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:53,950 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:40:53,950 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 372 of 414 [2022-07-19 21:40:53,950 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:40:54,619 INFO L129 PetriNetUnfolder]: 386/4441 cut-off events. [2022-07-19 21:40:54,619 INFO L130 PetriNetUnfolder]: For 771/937 co-relation queries the response was YES. [2022-07-19 21:40:54,645 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6149 conditions, 4441 events. 386/4441 cut-off events. For 771/937 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 36550 event pairs, 68 based on Foata normal form. 42/4374 useless extension candidates. Maximal degree in co-relation 6135. Up to 241 conditions per place. [2022-07-19 21:40:54,659 INFO L132 encePairwiseOnDemand]: 408/414 looper letters, 42 selfloop transitions, 11 changer transitions 0/399 dead transitions. [2022-07-19 21:40:54,659 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 399 transitions, 1104 flow [2022-07-19 21:40:54,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:40:54,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:40:54,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2271 transitions. [2022-07-19 21:40:54,663 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9142512077294686 [2022-07-19 21:40:54,663 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2271 transitions. [2022-07-19 21:40:54,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2271 transitions. [2022-07-19 21:40:54,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:40:54,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2271 transitions. [2022-07-19 21:40:54,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 378.5) internal successors, (2271), 6 states have internal predecessors, (2271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:54,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 414.0) internal successors, (2898), 7 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:54,676 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 414.0) internal successors, (2898), 7 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:54,676 INFO L186 Difference]: Start difference. First operand has 370 places, 369 transitions, 855 flow. Second operand 6 states and 2271 transitions. [2022-07-19 21:40:54,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 399 transitions, 1104 flow [2022-07-19 21:40:54,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 399 transitions, 1094 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-07-19 21:40:54,683 INFO L242 Difference]: Finished difference. Result has 379 places, 378 transitions, 961 flow [2022-07-19 21:40:54,683 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=961, PETRI_PLACES=379, PETRI_TRANSITIONS=378} [2022-07-19 21:40:54,684 INFO L279 CegarLoopForPetriNet]: 373 programPoint places, 6 predicate places. [2022-07-19 21:40:54,684 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 378 transitions, 961 flow [2022-07-19 21:40:54,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 374.2) internal successors, (1871), 5 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:54,684 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:40:54,685 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] [2022-07-19 21:40:54,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 21:40:54,899 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 [2022-07-19 21:40:54,900 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:40:54,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:40:54,900 INFO L85 PathProgramCache]: Analyzing trace with hash 435392531, now seen corresponding path program 3 times [2022-07-19 21:40:54,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:40:54,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625058982] [2022-07-19 21:40:54,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:40:54,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:40:54,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:40:55,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 21:40:55,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:40:55,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625058982] [2022-07-19 21:40:55,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625058982] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:40:55,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:40:55,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:40:55,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039924830] [2022-07-19 21:40:55,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:40:55,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:40:55,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:40:55,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:40:55,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:40:55,009 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 414 [2022-07-19 21:40:55,010 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 378 transitions, 961 flow. Second operand has 4 states, 4 states have (on average 372.5) internal successors, (1490), 4 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:55,011 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:40:55,011 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 414 [2022-07-19 21:40:55,011 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:40:56,096 INFO L129 PetriNetUnfolder]: 916/6215 cut-off events. [2022-07-19 21:40:56,096 INFO L130 PetriNetUnfolder]: For 3563/3915 co-relation queries the response was YES. [2022-07-19 21:40:56,153 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10686 conditions, 6215 events. 916/6215 cut-off events. For 3563/3915 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 54852 event pairs, 110 based on Foata normal form. 78/6108 useless extension candidates. Maximal degree in co-relation 10667. Up to 591 conditions per place. [2022-07-19 21:40:56,190 INFO L132 encePairwiseOnDemand]: 406/414 looper letters, 46 selfloop transitions, 25 changer transitions 0/414 dead transitions. [2022-07-19 21:40:56,190 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 414 transitions, 1316 flow [2022-07-19 21:40:56,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:40:56,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:40:56,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1891 transitions. [2022-07-19 21:40:56,194 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9135265700483092 [2022-07-19 21:40:56,195 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1891 transitions. [2022-07-19 21:40:56,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1891 transitions. [2022-07-19 21:40:56,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:40:56,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1891 transitions. [2022-07-19 21:40:56,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 378.2) internal successors, (1891), 5 states have internal predecessors, (1891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:56,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 414.0) internal successors, (2484), 6 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:56,202 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 414.0) internal successors, (2484), 6 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:56,202 INFO L186 Difference]: Start difference. First operand has 379 places, 378 transitions, 961 flow. Second operand 5 states and 1891 transitions. [2022-07-19 21:40:56,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 414 transitions, 1316 flow [2022-07-19 21:40:56,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 414 transitions, 1311 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-19 21:40:56,212 INFO L242 Difference]: Finished difference. Result has 385 places, 391 transitions, 1163 flow [2022-07-19 21:40:56,213 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1163, PETRI_PLACES=385, PETRI_TRANSITIONS=391} [2022-07-19 21:40:56,213 INFO L279 CegarLoopForPetriNet]: 373 programPoint places, 12 predicate places. [2022-07-19 21:40:56,213 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 391 transitions, 1163 flow [2022-07-19 21:40:56,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 372.5) internal successors, (1490), 4 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:56,214 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:40:56,214 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] [2022-07-19 21:40:56,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 21:40:56,215 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:40:56,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:40:56,215 INFO L85 PathProgramCache]: Analyzing trace with hash 2124672807, now seen corresponding path program 4 times [2022-07-19 21:40:56,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:40:56,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710973701] [2022-07-19 21:40:56,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:40:56,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:40:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:40:56,296 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 21:40:56,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:40:56,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710973701] [2022-07-19 21:40:56,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710973701] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:40:56,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:40:56,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:40:56,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423842801] [2022-07-19 21:40:56,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:40:56,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:40:56,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:40:56,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:40:56,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:40:56,300 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 414 [2022-07-19 21:40:56,300 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 391 transitions, 1163 flow. Second operand has 4 states, 4 states have (on average 373.25) internal successors, (1493), 4 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:56,301 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:40:56,301 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 414 [2022-07-19 21:40:56,301 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:40:57,445 INFO L129 PetriNetUnfolder]: 1046/6783 cut-off events. [2022-07-19 21:40:57,445 INFO L130 PetriNetUnfolder]: For 8668/9248 co-relation queries the response was YES. [2022-07-19 21:40:57,510 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13350 conditions, 6783 events. 1046/6783 cut-off events. For 8668/9248 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 61186 event pairs, 220 based on Foata normal form. 78/6652 useless extension candidates. Maximal degree in co-relation 13328. Up to 612 conditions per place. [2022-07-19 21:40:57,564 INFO L132 encePairwiseOnDemand]: 408/414 looper letters, 65 selfloop transitions, 26 changer transitions 0/435 dead transitions. [2022-07-19 21:40:57,565 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 435 transitions, 1761 flow [2022-07-19 21:40:57,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:40:57,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:40:57,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1889 transitions. [2022-07-19 21:40:57,569 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.91256038647343 [2022-07-19 21:40:57,569 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1889 transitions. [2022-07-19 21:40:57,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1889 transitions. [2022-07-19 21:40:57,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:40:57,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1889 transitions. [2022-07-19 21:40:57,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 377.8) internal successors, (1889), 5 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:57,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 414.0) internal successors, (2484), 6 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:57,577 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 414.0) internal successors, (2484), 6 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:57,577 INFO L186 Difference]: Start difference. First operand has 385 places, 391 transitions, 1163 flow. Second operand 5 states and 1889 transitions. [2022-07-19 21:40:57,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 435 transitions, 1761 flow [2022-07-19 21:40:57,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 435 transitions, 1706 flow, removed 14 selfloop flow, removed 1 redundant places. [2022-07-19 21:40:57,592 INFO L242 Difference]: Finished difference. Result has 392 places, 403 transitions, 1393 flow [2022-07-19 21:40:57,593 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=1100, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1393, PETRI_PLACES=392, PETRI_TRANSITIONS=403} [2022-07-19 21:40:57,594 INFO L279 CegarLoopForPetriNet]: 373 programPoint places, 19 predicate places. [2022-07-19 21:40:57,594 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 403 transitions, 1393 flow [2022-07-19 21:40:57,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 373.25) internal successors, (1493), 4 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:57,595 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:40:57,595 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] [2022-07-19 21:40:57,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 21:40:57,595 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:40:57,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:40:57,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1409041932, now seen corresponding path program 1 times [2022-07-19 21:40:57,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:40:57,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096583974] [2022-07-19 21:40:57,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:40:57,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:40:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:40:57,687 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 21:40:57,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:40:57,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096583974] [2022-07-19 21:40:57,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096583974] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:40:57,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:40:57,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:40:57,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11055148] [2022-07-19 21:40:57,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:40:57,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:40:57,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:40:57,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:40:57,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:40:57,690 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 364 out of 414 [2022-07-19 21:40:57,691 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 403 transitions, 1393 flow. Second operand has 4 states, 4 states have (on average 368.5) internal successors, (1474), 4 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:57,691 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:40:57,691 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 364 of 414 [2022-07-19 21:40:57,691 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:40:58,380 INFO L129 PetriNetUnfolder]: 901/4512 cut-off events. [2022-07-19 21:40:58,380 INFO L130 PetriNetUnfolder]: For 12260/12992 co-relation queries the response was YES. [2022-07-19 21:40:58,417 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11197 conditions, 4512 events. 901/4512 cut-off events. For 12260/12992 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 38158 event pairs, 379 based on Foata normal form. 173/4316 useless extension candidates. Maximal degree in co-relation 11172. Up to 864 conditions per place. [2022-07-19 21:40:58,437 INFO L132 encePairwiseOnDemand]: 408/414 looper letters, 44 selfloop transitions, 4 changer transitions 23/430 dead transitions. [2022-07-19 21:40:58,437 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 430 transitions, 1764 flow [2022-07-19 21:40:58,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:40:58,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:40:58,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1855 transitions. [2022-07-19 21:40:58,441 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8961352657004831 [2022-07-19 21:40:58,441 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1855 transitions. [2022-07-19 21:40:58,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1855 transitions. [2022-07-19 21:40:58,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:40:58,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1855 transitions. [2022-07-19 21:40:58,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 371.0) internal successors, (1855), 5 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:58,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 414.0) internal successors, (2484), 6 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:58,447 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 414.0) internal successors, (2484), 6 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:58,447 INFO L186 Difference]: Start difference. First operand has 392 places, 403 transitions, 1393 flow. Second operand 5 states and 1855 transitions. [2022-07-19 21:40:58,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 430 transitions, 1764 flow [2022-07-19 21:40:58,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 430 transitions, 1762 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-07-19 21:40:58,464 INFO L242 Difference]: Finished difference. Result has 398 places, 404 transitions, 1419 flow [2022-07-19 21:40:58,465 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=1391, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1419, PETRI_PLACES=398, PETRI_TRANSITIONS=404} [2022-07-19 21:40:58,465 INFO L279 CegarLoopForPetriNet]: 373 programPoint places, 25 predicate places. [2022-07-19 21:40:58,465 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 404 transitions, 1419 flow [2022-07-19 21:40:58,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 368.5) internal successors, (1474), 4 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:58,466 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:40:58,466 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] [2022-07-19 21:40:58,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 21:40:58,466 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:40:58,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:40:58,467 INFO L85 PathProgramCache]: Analyzing trace with hash -220235787, now seen corresponding path program 1 times [2022-07-19 21:40:58,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:40:58,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932257397] [2022-07-19 21:40:58,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:40:58,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:40:58,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:40:58,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 21:40:58,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:40:58,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932257397] [2022-07-19 21:40:58,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932257397] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:40:58,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:40:58,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:40:58,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353661327] [2022-07-19 21:40:58,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:40:58,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:40:58,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:40:58,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:40:58,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:40:58,649 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 414 [2022-07-19 21:40:58,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 404 transitions, 1419 flow. Second operand has 9 states, 9 states have (on average 321.8888888888889) internal successors, (2897), 9 states have internal predecessors, (2897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:40:58,651 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:40:58,652 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 414 [2022-07-19 21:40:58,652 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:41:00,072 INFO L129 PetriNetUnfolder]: 2395/7360 cut-off events. [2022-07-19 21:41:00,072 INFO L130 PetriNetUnfolder]: For 22211/22930 co-relation queries the response was YES. [2022-07-19 21:41:00,126 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20904 conditions, 7360 events. 2395/7360 cut-off events. For 22211/22930 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 65995 event pairs, 1386 based on Foata normal form. 357/6752 useless extension candidates. Maximal degree in co-relation 20876. Up to 3229 conditions per place. [2022-07-19 21:41:00,157 INFO L132 encePairwiseOnDemand]: 401/414 looper letters, 93 selfloop transitions, 8 changer transitions 62/470 dead transitions. [2022-07-19 21:41:00,157 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 470 transitions, 2070 flow [2022-07-19 21:41:00,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 21:41:00,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-19 21:41:00,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3904 transitions. [2022-07-19 21:41:00,163 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.785829307568438 [2022-07-19 21:41:00,163 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3904 transitions. [2022-07-19 21:41:00,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3904 transitions. [2022-07-19 21:41:00,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:41:00,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3904 transitions. [2022-07-19 21:41:00,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 325.3333333333333) internal successors, (3904), 12 states have internal predecessors, (3904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:41:00,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 414.0) internal successors, (5382), 13 states have internal predecessors, (5382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:41:00,175 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 414.0) internal successors, (5382), 13 states have internal predecessors, (5382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:41:00,175 INFO L186 Difference]: Start difference. First operand has 398 places, 404 transitions, 1419 flow. Second operand 12 states and 3904 transitions. [2022-07-19 21:41:00,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 470 transitions, 2070 flow [2022-07-19 21:41:00,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 470 transitions, 2026 flow, removed 19 selfloop flow, removed 3 redundant places. [2022-07-19 21:41:00,343 INFO L242 Difference]: Finished difference. Result has 410 places, 405 transitions, 1439 flow [2022-07-19 21:41:00,344 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=1401, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1439, PETRI_PLACES=410, PETRI_TRANSITIONS=405} [2022-07-19 21:41:00,345 INFO L279 CegarLoopForPetriNet]: 373 programPoint places, 37 predicate places. [2022-07-19 21:41:00,345 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 405 transitions, 1439 flow [2022-07-19 21:41:00,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 321.8888888888889) internal successors, (2897), 9 states have internal predecessors, (2897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:41:00,346 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:41:00,346 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] [2022-07-19 21:41:00,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 21:41:00,347 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:41:00,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:41:00,347 INFO L85 PathProgramCache]: Analyzing trace with hash -558405394, now seen corresponding path program 1 times [2022-07-19 21:41:00,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:41:00,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552545568] [2022-07-19 21:41:00,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:41:00,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:41:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:41:00,491 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 21:41:00,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:41:00,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552545568] [2022-07-19 21:41:00,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552545568] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:41:00,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708307791] [2022-07-19 21:41:00,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:41:00,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:41:00,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:41:00,495 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:41:00,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 21:41:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:41:00,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 21:41:00,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:41:00,867 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 21:41:00,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:41:01,021 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 21:41:01,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708307791] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 21:41:01,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-19 21:41:01,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 16 [2022-07-19 21:41:01,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465015900] [2022-07-19 21:41:01,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:41:01,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:41:01,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:41:01,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:41:01,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-07-19 21:41:01,025 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 414 [2022-07-19 21:41:01,026 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 405 transitions, 1439 flow. Second operand has 9 states, 9 states have (on average 321.1111111111111) internal successors, (2890), 9 states have internal predecessors, (2890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:41:01,026 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:41:01,026 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 414 [2022-07-19 21:41:01,026 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:41:01,875 INFO L129 PetriNetUnfolder]: 954/3590 cut-off events. [2022-07-19 21:41:01,875 INFO L130 PetriNetUnfolder]: For 11086/11489 co-relation queries the response was YES. [2022-07-19 21:41:01,898 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10445 conditions, 3590 events. 954/3590 cut-off events. For 11086/11489 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 27350 event pairs, 431 based on Foata normal form. 65/3329 useless extension candidates. Maximal degree in co-relation 10413. Up to 1237 conditions per place. [2022-07-19 21:41:01,914 INFO L132 encePairwiseOnDemand]: 402/414 looper letters, 90 selfloop transitions, 11 changer transitions 0/407 dead transitions. [2022-07-19 21:41:01,914 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 407 transitions, 1645 flow [2022-07-19 21:41:01,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 21:41:01,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-19 21:41:01,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3529 transitions. [2022-07-19 21:41:01,920 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7749231444883619 [2022-07-19 21:41:01,920 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3529 transitions. [2022-07-19 21:41:01,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3529 transitions. [2022-07-19 21:41:01,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:41:01,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3529 transitions. [2022-07-19 21:41:01,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 320.8181818181818) internal successors, (3529), 11 states have internal predecessors, (3529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:41:01,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 414.0) internal successors, (4968), 12 states have internal predecessors, (4968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:41:01,930 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 414.0) internal successors, (4968), 12 states have internal predecessors, (4968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:41:01,930 INFO L186 Difference]: Start difference. First operand has 410 places, 405 transitions, 1439 flow. Second operand 11 states and 3529 transitions. [2022-07-19 21:41:01,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 407 transitions, 1645 flow [2022-07-19 21:41:01,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 407 transitions, 1617 flow, removed 6 selfloop flow, removed 9 redundant places. [2022-07-19 21:41:01,945 INFO L242 Difference]: Finished difference. Result has 409 places, 407 transitions, 1452 flow [2022-07-19 21:41:01,946 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=1411, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1452, PETRI_PLACES=409, PETRI_TRANSITIONS=407} [2022-07-19 21:41:01,946 INFO L279 CegarLoopForPetriNet]: 373 programPoint places, 36 predicate places. [2022-07-19 21:41:01,946 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 407 transitions, 1452 flow [2022-07-19 21:41:01,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 321.1111111111111) internal successors, (2890), 9 states have internal predecessors, (2890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:41:01,947 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:41:01,947 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] [2022-07-19 21:41:01,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 21:41:02,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:41:02,163 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:41:02,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:41:02,163 INFO L85 PathProgramCache]: Analyzing trace with hash 2022249475, now seen corresponding path program 1 times [2022-07-19 21:41:02,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:41:02,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696593107] [2022-07-19 21:41:02,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:41:02,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:41:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:41:02,379 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 21:41:02,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:41:02,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696593107] [2022-07-19 21:41:02,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696593107] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:41:02,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:41:02,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-19 21:41:02,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384511101] [2022-07-19 21:41:02,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:41:02,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 21:41:02,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:41:02,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 21:41:02,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-19 21:41:02,383 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 414 [2022-07-19 21:41:02,385 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 407 transitions, 1452 flow. Second operand has 13 states, 13 states have (on average 285.61538461538464) internal successors, (3713), 13 states have internal predecessors, (3713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:41:02,385 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:41:02,385 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 414 [2022-07-19 21:41:02,385 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:41:18,996 INFO L129 PetriNetUnfolder]: 43122/78179 cut-off events. [2022-07-19 21:41:18,996 INFO L130 PetriNetUnfolder]: For 385849/445362 co-relation queries the response was YES. [2022-07-19 21:41:19,608 INFO L84 FinitePrefix]: Finished finitePrefix Result has 272246 conditions, 78179 events. 43122/78179 cut-off events. For 385849/445362 co-relation queries the response was YES. Maximal size of possible extension queue 1084. Compared 745180 event pairs, 25990 based on Foata normal form. 17524/92321 useless extension candidates. Maximal degree in co-relation 272215. Up to 52871 conditions per place. [2022-07-19 21:41:19,926 INFO L132 encePairwiseOnDemand]: 397/414 looper letters, 128 selfloop transitions, 7 changer transitions 402/813 dead transitions. [2022-07-19 21:41:19,926 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 813 transitions, 6104 flow [2022-07-19 21:41:19,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-19 21:41:19,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-07-19 21:41:19,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 6683 transitions. [2022-07-19 21:41:19,936 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7018483511867255 [2022-07-19 21:41:19,936 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 6683 transitions. [2022-07-19 21:41:19,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 6683 transitions. [2022-07-19 21:41:19,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:41:19,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 6683 transitions. [2022-07-19 21:41:19,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 290.5652173913044) internal successors, (6683), 23 states have internal predecessors, (6683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:41:19,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 414.0) internal successors, (9936), 24 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:41:19,957 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 414.0) internal successors, (9936), 24 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:41:19,957 INFO L186 Difference]: Start difference. First operand has 409 places, 407 transitions, 1452 flow. Second operand 23 states and 6683 transitions. [2022-07-19 21:41:19,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 813 transitions, 6104 flow [2022-07-19 21:41:20,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 813 transitions, 6088 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-07-19 21:41:20,105 INFO L242 Difference]: Finished difference. Result has 440 places, 408 transitions, 1684 flow [2022-07-19 21:41:20,105 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=1436, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1684, PETRI_PLACES=440, PETRI_TRANSITIONS=408} [2022-07-19 21:41:20,106 INFO L279 CegarLoopForPetriNet]: 373 programPoint places, 67 predicate places. [2022-07-19 21:41:20,106 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 408 transitions, 1684 flow [2022-07-19 21:41:20,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 285.61538461538464) internal successors, (3713), 13 states have internal predecessors, (3713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:41:20,107 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:41:20,107 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] [2022-07-19 21:41:20,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 21:41:20,107 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:41:20,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:41:20,108 INFO L85 PathProgramCache]: Analyzing trace with hash -272035395, now seen corresponding path program 1 times [2022-07-19 21:41:20,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:41:20,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267976196] [2022-07-19 21:41:20,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:41:20,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:41:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:41:22,577 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 21:41:22,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:41:22,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267976196] [2022-07-19 21:41:22,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267976196] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:41:22,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259459519] [2022-07-19 21:41:22,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:41:22,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:41:22,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:41:22,579 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:41:22,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 21:41:22,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:41:22,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 94 conjunts are in the unsatisfiable core [2022-07-19 21:41:22,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:41:24,151 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 21:41:24,927 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-19 21:41:24,928 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-19 21:41:25,291 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-19 21:41:25,866 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-19 21:41:25,873 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 21:41:25,883 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-19 21:41:26,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:41:26,383 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2022-07-19 21:41:26,390 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 21:41:26,397 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 21:41:26,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:41:26,583 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2022-07-19 21:41:26,590 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 21:41:26,595 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 21:41:26,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:41:26,734 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-07-19 21:41:26,740 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 21:41:26,744 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 21:41:30,282 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 21:41:30,283 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 29 [2022-07-19 21:41:30,300 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 21:41:30,301 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 21:41:30,308 INFO L356 Elim1Store]: treesize reduction 3, result has 70.0 percent of original size [2022-07-19 21:41:30,308 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 33 [2022-07-19 21:41:30,527 INFO L356 Elim1Store]: treesize reduction 57, result has 38.7 percent of original size [2022-07-19 21:41:30,527 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 83 treesize of output 68 [2022-07-19 21:41:30,565 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 21:41:30,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:41:35,371 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:41:35,372 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 199 treesize of output 188 [2022-07-19 21:41:35,397 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:41:35,397 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2618 treesize of output 2626 [2022-07-19 21:41:35,414 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:41:35,414 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 2574 treesize of output 2202 [2022-07-19 21:41:35,443 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:41:35,444 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59394 treesize of output 58410 [2022-07-19 21:41:35,572 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:41:35,573 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58358 treesize of output 55302 [2022-07-19 21:41:35,656 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:41:35,657 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55286 treesize of output 54534 [2022-07-19 21:41:35,740 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:41:35,741 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54518 treesize of output 52998 [2022-07-19 21:41:35,826 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:41:35,826 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52982 treesize of output 51462 [2022-07-19 21:41:35,922 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:41:35,923 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51446 treesize of output 48390 [2022-07-19 21:41:36,037 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:41:36,038 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24570 treesize of output 23819