./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/bench-exp2x9.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/bench-exp2x9.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 d6a1dd92aa2998cfb1326128fd549d301e029b328accb048c4d2ec692e416e63 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:22:41,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:22:41,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:22:41,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:22:41,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:22:41,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:22:41,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:22:41,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:22:41,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:22:41,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:22:41,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:22:41,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:22:41,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:22:41,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:22:41,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:22:41,635 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:22:41,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:22:41,636 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:22:41,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:22:41,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:22:41,644 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:22:41,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:22:41,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:22:41,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:22:41,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:22:41,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:22:41,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:22:41,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:22:41,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:22:41,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:22:41,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:22:41,654 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:22:41,655 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:22:41,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:22:41,656 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:22:41,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:22:41,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:22:41,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:22:41,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:22:41,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:22:41,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:22:41,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:22:41,661 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:22:41,681 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:22:41,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:22:41,682 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:22:41,682 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:22:41,682 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:22:41,682 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:22:41,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:22:41,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:22:41,683 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:22:41,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:22:41,684 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:22:41,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:22:41,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:22:41,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:22:41,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:22:41,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:22:41,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:22:41,685 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:22:41,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:22:41,686 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:22:41,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:22:41,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:22:41,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:22:41,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:22:41,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:22:41,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:22:41,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:22:41,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:22:41,687 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:22:41,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:22:41,688 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:22:41,688 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:22:41,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:22:41,688 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6a1dd92aa2998cfb1326128fd549d301e029b328accb048c4d2ec692e416e63 [2022-07-19 21:22:41,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:22:41,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:22:41,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:22:41,883 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:22:41,884 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:22:41,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c [2022-07-19 21:22:41,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff9ebc2b5/4a12a764eb6c4d4e828c5d6646f8d1fe/FLAGadf67ade0 [2022-07-19 21:22:42,291 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:22:42,292 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c [2022-07-19 21:22:42,296 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff9ebc2b5/4a12a764eb6c4d4e828c5d6646f8d1fe/FLAGadf67ade0 [2022-07-19 21:22:42,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff9ebc2b5/4a12a764eb6c4d4e828c5d6646f8d1fe [2022-07-19 21:22:42,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:22:42,307 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:22:42,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:22:42,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:22:42,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:22:42,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:22:42" (1/1) ... [2022-07-19 21:22:42,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cc60cdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:22:42, skipping insertion in model container [2022-07-19 21:22:42,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:22:42" (1/1) ... [2022-07-19 21:22:42,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:22:42,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:22:42,469 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/bench-exp2x9.wvr.c[2669,2682] [2022-07-19 21:22:42,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:22:42,475 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:22:42,490 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/bench-exp2x9.wvr.c[2669,2682] [2022-07-19 21:22:42,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:22:42,499 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:22:42,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:22:42 WrapperNode [2022-07-19 21:22:42,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:22:42,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:22:42,500 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:22:42,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:22:42,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:22:42" (1/1) ... [2022-07-19 21:22:42,509 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:22:42" (1/1) ... [2022-07-19 21:22:42,527 INFO L137 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91 [2022-07-19 21:22:42,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:22:42,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:22:42,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:22:42,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:22:42,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:22:42" (1/1) ... [2022-07-19 21:22:42,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:22:42" (1/1) ... [2022-07-19 21:22:42,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:22:42" (1/1) ... [2022-07-19 21:22:42,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:22:42" (1/1) ... [2022-07-19 21:22:42,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:22:42" (1/1) ... [2022-07-19 21:22:42,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:22:42" (1/1) ... [2022-07-19 21:22:42,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:22:42" (1/1) ... [2022-07-19 21:22:42,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:22:42,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:22:42,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:22:42,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:22:42,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:22:42" (1/1) ... [2022-07-19 21:22:42,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:22:42,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:22:42,574 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 21:22:42,580 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 21:22:42,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:22:42,602 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:22:42,602 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:22:42,602 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:22:42,603 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:22:42,603 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-19 21:22:42,603 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-19 21:22:42,603 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-07-19 21:22:42,603 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-07-19 21:22:42,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:22:42,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:22:42,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:22:42,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:22:42,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:22:42,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:22:42,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:22:42,605 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 21:22:42,661 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:22:42,662 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:22:42,842 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:22:42,852 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:22:42,852 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-19 21:22:42,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:22:42 BoogieIcfgContainer [2022-07-19 21:22:42,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:22:42,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:22:42,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:22:42,866 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:22:42,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:22:42" (1/3) ... [2022-07-19 21:22:42,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4694649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:22:42, skipping insertion in model container [2022-07-19 21:22:42,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:22:42" (2/3) ... [2022-07-19 21:22:42,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4694649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:22:42, skipping insertion in model container [2022-07-19 21:22:42,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:22:42" (3/3) ... [2022-07-19 21:22:42,868 INFO L111 eAbstractionObserver]: Analyzing ICFG bench-exp2x9.wvr.c [2022-07-19 21:22:42,873 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:22:42,879 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:22:42,879 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:22:42,879 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:22:42,938 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-07-19 21:22:42,965 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 152 places, 149 transitions, 330 flow [2022-07-19 21:22:43,017 INFO L129 PetriNetUnfolder]: 10/145 cut-off events. [2022-07-19 21:22:43,017 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-19 21:22:43,020 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 145 events. 10/145 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 131 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2022-07-19 21:22:43,021 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 149 transitions, 330 flow [2022-07-19 21:22:43,024 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 132 transitions, 288 flow [2022-07-19 21:22:43,031 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:22:43,035 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@10411463, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@755949bc [2022-07-19 21:22:43,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-19 21:22:43,072 INFO L129 PetriNetUnfolder]: 10/131 cut-off events. [2022-07-19 21:22:43,072 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-19 21:22:43,072 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:22:43,073 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] [2022-07-19 21:22:43,073 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:22:43,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:22:43,076 INFO L85 PathProgramCache]: Analyzing trace with hash 685807791, now seen corresponding path program 1 times [2022-07-19 21:22:43,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:22:43,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128057580] [2022-07-19 21:22:43,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:22:43,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:22:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:22:43,299 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 21:22:43,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:22:43,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128057580] [2022-07-19 21:22:43,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128057580] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:22:43,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:22:43,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 21:22:43,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468095311] [2022-07-19 21:22:43,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:22:43,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 21:22:43,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:22:43,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 21:22:43,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 21:22:43,336 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 149 [2022-07-19 21:22:43,342 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 132 transitions, 288 flow. Second operand has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 0 states 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 21:22:43,342 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:22:43,343 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 149 [2022-07-19 21:22:43,343 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:22:43,399 INFO L129 PetriNetUnfolder]: 4/126 cut-off events. [2022-07-19 21:22:43,400 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-07-19 21:22:43,401 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 126 events. 4/126 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 118 event pairs, 0 based on Foata normal form. 18/138 useless extension candidates. Maximal degree in co-relation 101. Up to 9 conditions per place. [2022-07-19 21:22:43,403 INFO L132 encePairwiseOnDemand]: 143/149 looper letters, 8 selfloop transitions, 0 changer transitions 2/126 dead transitions. [2022-07-19 21:22:43,403 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 126 transitions, 292 flow [2022-07-19 21:22:43,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 21:22:43,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-19 21:22:43,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 282 transitions. [2022-07-19 21:22:43,429 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9463087248322147 [2022-07-19 21:22:43,430 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 282 transitions. [2022-07-19 21:22:43,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 282 transitions. [2022-07-19 21:22:43,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:22:43,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 282 transitions. [2022-07-19 21:22:43,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 141.0) internal successors, (282), 2 states have internal predecessors, (282), 0 states have call successors, (0), 0 states 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 21:22:43,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states 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 21:22:43,448 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states 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 21:22:43,449 INFO L186 Difference]: Start difference. First operand has 135 places, 132 transitions, 288 flow. Second operand 2 states and 282 transitions. [2022-07-19 21:22:43,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 126 transitions, 292 flow [2022-07-19 21:22:43,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 126 transitions, 276 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-07-19 21:22:43,457 INFO L242 Difference]: Finished difference. Result has 128 places, 124 transitions, 256 flow [2022-07-19 21:22:43,458 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=256, PETRI_PLACES=128, PETRI_TRANSITIONS=124} [2022-07-19 21:22:43,463 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, -7 predicate places. [2022-07-19 21:22:43,464 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 124 transitions, 256 flow [2022-07-19 21:22:43,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 0 states 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 21:22:43,464 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:22:43,465 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] [2022-07-19 21:22:43,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:22:43,465 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:22:43,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:22:43,466 INFO L85 PathProgramCache]: Analyzing trace with hash 735830245, now seen corresponding path program 1 times [2022-07-19 21:22:43,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:22:43,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506981428] [2022-07-19 21:22:43,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:22:43,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:22:43,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:22:43,923 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 21:22:43,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:22:43,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506981428] [2022-07-19 21:22:43,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506981428] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:22:43,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:22:43,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:22:43,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550867601] [2022-07-19 21:22:43,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:22:43,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:22:43,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:22:43,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:22:43,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:22:43,930 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 149 [2022-07-19 21:22:43,931 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 124 transitions, 256 flow. Second operand has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states 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 21:22:43,940 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:22:43,940 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 149 [2022-07-19 21:22:43,941 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:22:46,803 INFO L129 PetriNetUnfolder]: 24847/33594 cut-off events. [2022-07-19 21:22:46,803 INFO L130 PetriNetUnfolder]: For 860/934 co-relation queries the response was YES. [2022-07-19 21:22:46,861 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67682 conditions, 33594 events. 24847/33594 cut-off events. For 860/934 co-relation queries the response was YES. Maximal size of possible extension queue 1125. Compared 189991 event pairs, 11708 based on Foata normal form. 1/29807 useless extension candidates. Maximal degree in co-relation 67679. Up to 32788 conditions per place. [2022-07-19 21:22:47,002 INFO L132 encePairwiseOnDemand]: 139/149 looper letters, 71 selfloop transitions, 7 changer transitions 4/146 dead transitions. [2022-07-19 21:22:47,002 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 146 transitions, 471 flow [2022-07-19 21:22:47,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:22:47,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:22:47,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 643 transitions. [2022-07-19 21:22:47,005 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6164908916586769 [2022-07-19 21:22:47,005 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 643 transitions. [2022-07-19 21:22:47,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 643 transitions. [2022-07-19 21:22:47,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:22:47,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 643 transitions. [2022-07-19 21:22:47,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.85714285714286) internal successors, (643), 7 states have internal predecessors, (643), 0 states have call successors, (0), 0 states 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 21:22:47,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 21:22:47,010 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 21:22:47,010 INFO L186 Difference]: Start difference. First operand has 128 places, 124 transitions, 256 flow. Second operand 7 states and 643 transitions. [2022-07-19 21:22:47,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 146 transitions, 471 flow [2022-07-19 21:22:47,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 146 transitions, 471 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:22:47,015 INFO L242 Difference]: Finished difference. Result has 135 places, 128 transitions, 297 flow [2022-07-19 21:22:47,016 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=297, PETRI_PLACES=135, PETRI_TRANSITIONS=128} [2022-07-19 21:22:47,016 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 0 predicate places. [2022-07-19 21:22:47,016 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 128 transitions, 297 flow [2022-07-19 21:22:47,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states 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 21:22:47,017 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:22:47,017 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] [2022-07-19 21:22:47,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:22:47,018 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:22:47,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:22:47,020 INFO L85 PathProgramCache]: Analyzing trace with hash -860683858, now seen corresponding path program 1 times [2022-07-19 21:22:47,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:22:47,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512561731] [2022-07-19 21:22:47,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:22:47,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:22:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:22:47,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:22:47,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:22:47,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512561731] [2022-07-19 21:22:47,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512561731] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:22:47,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:22:47,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:22:47,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295886161] [2022-07-19 21:22:47,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:22:47,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:22:47,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:22:47,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:22:47,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:22:47,131 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 149 [2022-07-19 21:22:47,132 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 128 transitions, 297 flow. Second operand has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 0 states have call successors, (0), 0 states 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 21:22:47,132 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:22:47,132 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 149 [2022-07-19 21:22:47,132 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:22:47,787 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([348] L53-->L54: Formula: (= v_~x2~0_9 (* v_~x2~0_10 2)) InVars {~x2~0=v_~x2~0_10} OutVars{~x2~0=v_~x2~0_9} AuxVars[] AssignedVars[~x2~0][111], [30#L109-4true, 42#L38-2true, 15#L82true, 175#true, 91#L54true, Black: 170#(and (= (+ (* (- 4294967296) (div ~x3~0 4294967296)) ~x3~0) (+ (* (div ~x4~0 4294967296) (- 4294967296)) ~x4~0)) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= (+ (* (div ~x2~0 4294967296) (- 4294967296)) ~x2~0) (+ ~x1~0 (* (div ~x1~0 4294967296) (- 4294967296)))) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 155#true, Black: 162#(and (= (+ (* (- 4294967296) (div ~x3~0 4294967296)) ~x3~0) (+ (* (div ~x4~0 4294967296) (- 4294967296)) ~x4~0)) (= (+ (* (div ~x2~0 4294967296) (- 4294967296)) ~x2~0) (+ ~x1~0 (* (div ~x1~0 4294967296) (- 4294967296))))), Black: 168#(and (= (+ (* (- 4294967296) (div ~x3~0 4294967296)) ~x3~0) (+ (* (div ~x4~0 4294967296) (- 4294967296)) ~x4~0)) (= (+ (* (div ~x2~0 4294967296) (- 4294967296)) ~x2~0) (+ ~x1~0 (* (div ~x1~0 4294967296) (- 4294967296)))) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 158#true, 23#L68true]) [2022-07-19 21:22:47,788 INFO L384 tUnfolder$Statistics]: this new event has 82 ancestors and is cut-off event [2022-07-19 21:22:47,788 INFO L387 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-07-19 21:22:47,788 INFO L387 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-07-19 21:22:47,788 INFO L387 tUnfolder$Statistics]: existing Event has 74 ancestors and is cut-off event [2022-07-19 21:22:47,806 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([348] L53-->L54: Formula: (= v_~x2~0_9 (* v_~x2~0_10 2)) InVars {~x2~0=v_~x2~0_10} OutVars{~x2~0=v_~x2~0_9} AuxVars[] AssignedVars[~x2~0][111], [15#L82true, 175#true, 91#L54true, 43#L110-2true, Black: 170#(and (= (+ (* (- 4294967296) (div ~x3~0 4294967296)) ~x3~0) (+ (* (div ~x4~0 4294967296) (- 4294967296)) ~x4~0)) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= (+ (* (div ~x2~0 4294967296) (- 4294967296)) ~x2~0) (+ ~x1~0 (* (div ~x1~0 4294967296) (- 4294967296)))) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 155#true, Black: 162#(and (= (+ (* (- 4294967296) (div ~x3~0 4294967296)) ~x3~0) (+ (* (div ~x4~0 4294967296) (- 4294967296)) ~x4~0)) (= (+ (* (div ~x2~0 4294967296) (- 4294967296)) ~x2~0) (+ ~x1~0 (* (div ~x1~0 4294967296) (- 4294967296))))), Black: 168#(and (= (+ (* (- 4294967296) (div ~x3~0 4294967296)) ~x3~0) (+ (* (div ~x4~0 4294967296) (- 4294967296)) ~x4~0)) (= (+ (* (div ~x2~0 4294967296) (- 4294967296)) ~x2~0) (+ ~x1~0 (* (div ~x1~0 4294967296) (- 4294967296)))) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 158#true, 23#L68true]) [2022-07-19 21:22:47,806 INFO L384 tUnfolder$Statistics]: this new event has 88 ancestors and is cut-off event [2022-07-19 21:22:47,806 INFO L387 tUnfolder$Statistics]: existing Event has 88 ancestors and is cut-off event [2022-07-19 21:22:47,806 INFO L387 tUnfolder$Statistics]: existing Event has 72 ancestors and is cut-off event [2022-07-19 21:22:47,807 INFO L387 tUnfolder$Statistics]: existing Event has 80 ancestors and is cut-off event [2022-07-19 21:22:47,822 INFO L129 PetriNetUnfolder]: 5288/9459 cut-off events. [2022-07-19 21:22:47,822 INFO L130 PetriNetUnfolder]: For 710/816 co-relation queries the response was YES. [2022-07-19 21:22:47,847 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18608 conditions, 9459 events. 5288/9459 cut-off events. For 710/816 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 72997 event pairs, 764 based on Foata normal form. 30/7487 useless extension candidates. Maximal degree in co-relation 18601. Up to 5185 conditions per place. [2022-07-19 21:22:47,882 INFO L132 encePairwiseOnDemand]: 138/149 looper letters, 88 selfloop transitions, 14 changer transitions 0/184 dead transitions. [2022-07-19 21:22:47,883 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 184 transitions, 648 flow [2022-07-19 21:22:47,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:22:47,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:22:47,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 774 transitions. [2022-07-19 21:22:47,885 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7420901246404602 [2022-07-19 21:22:47,885 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 774 transitions. [2022-07-19 21:22:47,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 774 transitions. [2022-07-19 21:22:47,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:22:47,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 774 transitions. [2022-07-19 21:22:47,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.57142857142857) internal successors, (774), 7 states have internal predecessors, (774), 0 states have call successors, (0), 0 states 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 21:22:47,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 21:22:47,889 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 21:22:47,889 INFO L186 Difference]: Start difference. First operand has 135 places, 128 transitions, 297 flow. Second operand 7 states and 774 transitions. [2022-07-19 21:22:47,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 184 transitions, 648 flow [2022-07-19 21:22:47,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 184 transitions, 627 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-07-19 21:22:47,893 INFO L242 Difference]: Finished difference. Result has 138 places, 134 transitions, 366 flow [2022-07-19 21:22:47,893 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=366, PETRI_PLACES=138, PETRI_TRANSITIONS=134} [2022-07-19 21:22:47,893 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 3 predicate places. [2022-07-19 21:22:47,894 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 134 transitions, 366 flow [2022-07-19 21:22:47,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 0 states have call successors, (0), 0 states 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 21:22:47,894 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:22:47,894 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] [2022-07-19 21:22:47,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:22:47,895 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:22:47,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:22:47,895 INFO L85 PathProgramCache]: Analyzing trace with hash -621750282, now seen corresponding path program 2 times [2022-07-19 21:22:47,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:22:47,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630462408] [2022-07-19 21:22:47,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:22:47,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:22:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:22:48,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:22:48,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:22:48,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630462408] [2022-07-19 21:22:48,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630462408] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:22:48,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:22:48,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:22:48,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719230491] [2022-07-19 21:22:48,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:22:48,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:22:48,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:22:48,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:22:48,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:22:48,064 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2022-07-19 21:22:48,065 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 134 transitions, 366 flow. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states 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 21:22:48,065 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:22:48,065 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2022-07-19 21:22:48,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:22:50,783 INFO L129 PetriNetUnfolder]: 32659/44813 cut-off events. [2022-07-19 21:22:50,783 INFO L130 PetriNetUnfolder]: For 27730/27818 co-relation queries the response was YES. [2022-07-19 21:22:50,895 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109057 conditions, 44813 events. 32659/44813 cut-off events. For 27730/27818 co-relation queries the response was YES. Maximal size of possible extension queue 1510. Compared 273140 event pairs, 16410 based on Foata normal form. 37/42221 useless extension candidates. Maximal degree in co-relation 109049. Up to 43690 conditions per place. [2022-07-19 21:22:51,065 INFO L132 encePairwiseOnDemand]: 138/149 looper letters, 88 selfloop transitions, 12 changer transitions 1/163 dead transitions. [2022-07-19 21:22:51,065 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 163 transitions, 672 flow [2022-07-19 21:22:51,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:22:51,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:22:51,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 563 transitions. [2022-07-19 21:22:51,067 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6297539149888143 [2022-07-19 21:22:51,067 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 563 transitions. [2022-07-19 21:22:51,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 563 transitions. [2022-07-19 21:22:51,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:22:51,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 563 transitions. [2022-07-19 21:22:51,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.83333333333333) internal successors, (563), 6 states have internal predecessors, (563), 0 states have call successors, (0), 0 states 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 21:22:51,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states 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 21:22:51,072 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states 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 21:22:51,073 INFO L186 Difference]: Start difference. First operand has 138 places, 134 transitions, 366 flow. Second operand 6 states and 563 transitions. [2022-07-19 21:22:51,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 163 transitions, 672 flow [2022-07-19 21:22:51,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 163 transitions, 668 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:22:51,085 INFO L242 Difference]: Finished difference. Result has 143 places, 139 transitions, 432 flow [2022-07-19 21:22:51,085 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=432, PETRI_PLACES=143, PETRI_TRANSITIONS=139} [2022-07-19 21:22:51,086 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 8 predicate places. [2022-07-19 21:22:51,086 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 139 transitions, 432 flow [2022-07-19 21:22:51,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states 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 21:22:51,087 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:22:51,087 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] [2022-07-19 21:22:51,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:22:51,087 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:22:51,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:22:51,088 INFO L85 PathProgramCache]: Analyzing trace with hash -284960424, now seen corresponding path program 1 times [2022-07-19 21:22:51,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:22:51,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958965421] [2022-07-19 21:22:51,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:22:51,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:22:51,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:22:51,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:22:51,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:22:51,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958965421] [2022-07-19 21:22:51,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958965421] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:22:51,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:22:51,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:22:51,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142927612] [2022-07-19 21:22:51,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:22:51,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:22:51,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:22:51,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:22:51,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:22:51,227 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 149 [2022-07-19 21:22:51,227 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 139 transitions, 432 flow. Second operand has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 0 states have call successors, (0), 0 states 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 21:22:51,227 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:22:51,227 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 149 [2022-07-19 21:22:51,227 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:22:52,196 INFO L129 PetriNetUnfolder]: 5963/13479 cut-off events. [2022-07-19 21:22:52,197 INFO L130 PetriNetUnfolder]: For 6868/7049 co-relation queries the response was YES. [2022-07-19 21:22:52,243 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27216 conditions, 13479 events. 5963/13479 cut-off events. For 6868/7049 co-relation queries the response was YES. Maximal size of possible extension queue 757. Compared 133624 event pairs, 3044 based on Foata normal form. 182/11972 useless extension candidates. Maximal degree in co-relation 27205. Up to 5202 conditions per place. [2022-07-19 21:22:52,295 INFO L132 encePairwiseOnDemand]: 138/149 looper letters, 94 selfloop transitions, 15 changer transitions 0/193 dead transitions. [2022-07-19 21:22:52,295 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 193 transitions, 819 flow [2022-07-19 21:22:52,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:22:52,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:22:52,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 774 transitions. [2022-07-19 21:22:52,297 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7420901246404602 [2022-07-19 21:22:52,297 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 774 transitions. [2022-07-19 21:22:52,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 774 transitions. [2022-07-19 21:22:52,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:22:52,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 774 transitions. [2022-07-19 21:22:52,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.57142857142857) internal successors, (774), 7 states have internal predecessors, (774), 0 states have call successors, (0), 0 states 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 21:22:52,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 21:22:52,301 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 21:22:52,301 INFO L186 Difference]: Start difference. First operand has 143 places, 139 transitions, 432 flow. Second operand 7 states and 774 transitions. [2022-07-19 21:22:52,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 193 transitions, 819 flow [2022-07-19 21:22:52,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 193 transitions, 797 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-07-19 21:22:52,311 INFO L242 Difference]: Finished difference. Result has 148 places, 142 transitions, 490 flow [2022-07-19 21:22:52,312 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=490, PETRI_PLACES=148, PETRI_TRANSITIONS=142} [2022-07-19 21:22:52,312 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 13 predicate places. [2022-07-19 21:22:52,312 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 142 transitions, 490 flow [2022-07-19 21:22:52,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 0 states have call successors, (0), 0 states 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 21:22:52,313 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:22:52,313 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] [2022-07-19 21:22:52,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:22:52,313 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:22:52,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:22:52,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1211854294, now seen corresponding path program 1 times [2022-07-19 21:22:52,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:22:52,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391061047] [2022-07-19 21:22:52,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:22:52,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:22:52,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:22:52,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:22:52,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:22:52,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391061047] [2022-07-19 21:22:52,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391061047] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:22:52,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692800533] [2022-07-19 21:22:52,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:22:52,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:22:52,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:22:52,420 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 21:22:52,421 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 21:22:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:22:52,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 21:22:52,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:22:52,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:22:52,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:22:53,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:22:53,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692800533] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:22:53,023 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:22:53,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-07-19 21:22:53,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407262110] [2022-07-19 21:22:53,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:22:53,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:22:53,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:22:53,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:22:53,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:22:53,025 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 149 [2022-07-19 21:22:53,026 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 142 transitions, 490 flow. Second operand has 10 states, 10 states have (on average 101.7) internal successors, (1017), 10 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states 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 21:22:53,026 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:22:53,026 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 149 [2022-07-19 21:22:53,026 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:22:54,711 INFO L129 PetriNetUnfolder]: 13397/21670 cut-off events. [2022-07-19 21:22:54,712 INFO L130 PetriNetUnfolder]: For 50248/50724 co-relation queries the response was YES. [2022-07-19 21:22:54,769 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63137 conditions, 21670 events. 13397/21670 cut-off events. For 50248/50724 co-relation queries the response was YES. Maximal size of possible extension queue 1581. Compared 179630 event pairs, 1103 based on Foata normal form. 217/19607 useless extension candidates. Maximal degree in co-relation 63124. Up to 12306 conditions per place. [2022-07-19 21:22:54,852 INFO L132 encePairwiseOnDemand]: 136/149 looper letters, 157 selfloop transitions, 22 changer transitions 0/265 dead transitions. [2022-07-19 21:22:54,852 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 265 transitions, 1554 flow [2022-07-19 21:22:54,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 21:22:54,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-19 21:22:54,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1285 transitions. [2022-07-19 21:22:54,855 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7186800894854586 [2022-07-19 21:22:54,855 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1285 transitions. [2022-07-19 21:22:54,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1285 transitions. [2022-07-19 21:22:54,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:22:54,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1285 transitions. [2022-07-19 21:22:54,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 107.08333333333333) internal successors, (1285), 12 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states 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 21:22:54,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 149.0) internal successors, (1937), 13 states have internal predecessors, (1937), 0 states have call successors, (0), 0 states 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 21:22:54,859 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 149.0) internal successors, (1937), 13 states have internal predecessors, (1937), 0 states have call successors, (0), 0 states 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 21:22:54,859 INFO L186 Difference]: Start difference. First operand has 148 places, 142 transitions, 490 flow. Second operand 12 states and 1285 transitions. [2022-07-19 21:22:54,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 265 transitions, 1554 flow [2022-07-19 21:22:54,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 265 transitions, 1520 flow, removed 15 selfloop flow, removed 2 redundant places. [2022-07-19 21:22:54,897 INFO L242 Difference]: Finished difference. Result has 164 places, 154 transitions, 618 flow [2022-07-19 21:22:54,897 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=618, PETRI_PLACES=164, PETRI_TRANSITIONS=154} [2022-07-19 21:22:54,898 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 29 predicate places. [2022-07-19 21:22:54,898 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 154 transitions, 618 flow [2022-07-19 21:22:54,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.7) internal successors, (1017), 10 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states 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 21:22:54,898 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:22:54,898 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] [2022-07-19 21:22:54,915 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 21:22:55,104 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 21:22:55,105 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:22:55,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:22:55,105 INFO L85 PathProgramCache]: Analyzing trace with hash 785459654, now seen corresponding path program 1 times [2022-07-19 21:22:55,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:22:55,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156096951] [2022-07-19 21:22:55,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:22:55,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:22:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:22:55,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:22:55,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:22:55,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156096951] [2022-07-19 21:22:55,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156096951] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:22:55,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:22:55,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:22:55,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126039679] [2022-07-19 21:22:55,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:22:55,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:22:55,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:22:55,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:22:55,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:22:55,230 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2022-07-19 21:22:55,230 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 154 transitions, 618 flow. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states 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 21:22:55,230 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:22:55,230 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2022-07-19 21:22:55,230 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:23:00,996 INFO L129 PetriNetUnfolder]: 53406/78664 cut-off events. [2022-07-19 21:23:00,996 INFO L130 PetriNetUnfolder]: For 134613/134663 co-relation queries the response was YES. [2022-07-19 21:23:01,358 INFO L84 FinitePrefix]: Finished finitePrefix Result has 232294 conditions, 78664 events. 53406/78664 cut-off events. For 134613/134663 co-relation queries the response was YES. Maximal size of possible extension queue 2457. Compared 582026 event pairs, 32395 based on Foata normal form. 21/78491 useless extension candidates. Maximal degree in co-relation 232274. Up to 72554 conditions per place. [2022-07-19 21:23:01,810 INFO L132 encePairwiseOnDemand]: 138/149 looper letters, 105 selfloop transitions, 13 changer transitions 8/188 dead transitions. [2022-07-19 21:23:01,810 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 188 transitions, 1104 flow [2022-07-19 21:23:01,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:23:01,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:23:01,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 562 transitions. [2022-07-19 21:23:01,812 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6286353467561522 [2022-07-19 21:23:01,812 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 562 transitions. [2022-07-19 21:23:01,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 562 transitions. [2022-07-19 21:23:01,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:23:01,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 562 transitions. [2022-07-19 21:23:01,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.66666666666667) internal successors, (562), 6 states have internal predecessors, (562), 0 states have call successors, (0), 0 states 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 21:23:01,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states 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 21:23:01,814 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states 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 21:23:01,814 INFO L186 Difference]: Start difference. First operand has 164 places, 154 transitions, 618 flow. Second operand 6 states and 562 transitions. [2022-07-19 21:23:01,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 188 transitions, 1104 flow [2022-07-19 21:23:02,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 188 transitions, 1098 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-19 21:23:02,446 INFO L242 Difference]: Finished difference. Result has 168 places, 158 transitions, 701 flow [2022-07-19 21:23:02,446 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=701, PETRI_PLACES=168, PETRI_TRANSITIONS=158} [2022-07-19 21:23:02,447 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 33 predicate places. [2022-07-19 21:23:02,447 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 158 transitions, 701 flow [2022-07-19 21:23:02,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states 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 21:23:02,447 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:23:02,447 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] [2022-07-19 21:23:02,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:23:02,448 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:23:02,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:23:02,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1705357160, now seen corresponding path program 2 times [2022-07-19 21:23:02,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:23:02,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482938161] [2022-07-19 21:23:02,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:23:02,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:23:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:23:02,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:23:02,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:23:02,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482938161] [2022-07-19 21:23:02,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482938161] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:23:02,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:23:02,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:23:02,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196789442] [2022-07-19 21:23:02,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:23:02,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:23:02,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:23:02,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:23:02,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:23:02,526 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 149 [2022-07-19 21:23:02,527 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 158 transitions, 701 flow. Second operand has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 0 states have call successors, (0), 0 states 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 21:23:02,527 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:23:02,527 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 149 [2022-07-19 21:23:02,527 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:23:04,454 INFO L129 PetriNetUnfolder]: 14241/22849 cut-off events. [2022-07-19 21:23:04,454 INFO L130 PetriNetUnfolder]: For 63726/64268 co-relation queries the response was YES. [2022-07-19 21:23:04,533 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76187 conditions, 22849 events. 14241/22849 cut-off events. For 63726/64268 co-relation queries the response was YES. Maximal size of possible extension queue 1589. Compared 188845 event pairs, 4251 based on Foata normal form. 543/22291 useless extension candidates. Maximal degree in co-relation 76164. Up to 15411 conditions per place. [2022-07-19 21:23:04,625 INFO L132 encePairwiseOnDemand]: 138/149 looper letters, 122 selfloop transitions, 17 changer transitions 0/227 dead transitions. [2022-07-19 21:23:04,625 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 227 transitions, 1399 flow [2022-07-19 21:23:04,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:23:04,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:23:04,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 770 transitions. [2022-07-19 21:23:04,627 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.738255033557047 [2022-07-19 21:23:04,627 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 770 transitions. [2022-07-19 21:23:04,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 770 transitions. [2022-07-19 21:23:04,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:23:04,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 770 transitions. [2022-07-19 21:23:04,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.0) internal successors, (770), 7 states have internal predecessors, (770), 0 states have call successors, (0), 0 states 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 21:23:04,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 21:23:04,630 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states 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 21:23:04,631 INFO L186 Difference]: Start difference. First operand has 168 places, 158 transitions, 701 flow. Second operand 7 states and 770 transitions. [2022-07-19 21:23:04,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 227 transitions, 1399 flow [2022-07-19 21:23:04,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 227 transitions, 1378 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-07-19 21:23:04,719 INFO L242 Difference]: Finished difference. Result has 174 places, 161 transitions, 769 flow [2022-07-19 21:23:04,719 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=769, PETRI_PLACES=174, PETRI_TRANSITIONS=161} [2022-07-19 21:23:04,720 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 39 predicate places. [2022-07-19 21:23:04,720 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 161 transitions, 769 flow [2022-07-19 21:23:04,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 0 states have call successors, (0), 0 states 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 21:23:04,720 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:23:04,720 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] [2022-07-19 21:23:04,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:23:04,721 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:23:04,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:23:04,721 INFO L85 PathProgramCache]: Analyzing trace with hash -333652181, now seen corresponding path program 1 times [2022-07-19 21:23:04,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:23:04,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735000714] [2022-07-19 21:23:04,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:23:04,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:23:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:23:06,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:23:06,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:23:06,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735000714] [2022-07-19 21:23:06,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735000714] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:23:06,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042466637] [2022-07-19 21:23:06,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:23:06,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:23:06,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:23:06,637 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 21:23:06,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process