./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60a8024d-3792-45d7-a6ad-76eeccd512ae/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60a8024d-3792-45d7-a6ad-76eeccd512ae/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60a8024d-3792-45d7-a6ad-76eeccd512ae/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60a8024d-3792-45d7-a6ad-76eeccd512ae/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60a8024d-3792-45d7-a6ad-76eeccd512ae/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60a8024d-3792-45d7-a6ad-76eeccd512ae/bin/uautomizer-TMbwUNV5ro --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 f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:39:56,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:39:56,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:39:56,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:39:56,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:39:56,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:39:56,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:39:56,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:39:56,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:39:56,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:39:56,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:39:56,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:39:56,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:39:56,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:39:56,550 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:39:56,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:39:56,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:39:56,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:39:56,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:39:56,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:39:56,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:39:56,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:39:56,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:39:56,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:39:56,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:39:56,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:39:56,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:39:56,571 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:39:56,571 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:39:56,573 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:39:56,573 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:39:56,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:39:56,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:39:56,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:39:56,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:39:56,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:39:56,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:39:56,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:39:56,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:39:56,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:39:56,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:39:56,584 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60a8024d-3792-45d7-a6ad-76eeccd512ae/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 18:39:56,609 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:39:56,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:39:56,610 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:39:56,610 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:39:56,611 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:39:56,611 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:39:56,612 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:39:56,612 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:39:56,613 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:39:56,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:39:56,613 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:39:56,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:39:56,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:39:56,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:39:56,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:39:56,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:39:56,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:39:56,615 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:39:56,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:39:56,616 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:39:56,616 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:39:56,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:39:56,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:39:56,617 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:39:56,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:39:56,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:39:56,618 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:39:56,618 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:39:56,618 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:39:56,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:39:56,619 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:39:56,619 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:39:56,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:39:56,620 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60a8024d-3792-45d7-a6ad-76eeccd512ae/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60a8024d-3792-45d7-a6ad-76eeccd512ae/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 [2022-11-18 18:39:56,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:39:56,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:39:56,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:39:56,921 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:39:56,922 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:39:56,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60a8024d-3792-45d7-a6ad-76eeccd512ae/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2022-11-18 18:39:57,021 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60a8024d-3792-45d7-a6ad-76eeccd512ae/bin/uautomizer-TMbwUNV5ro/data/b9858ccb5/fcfa48c827c7410fa558e9e623b7b434/FLAGfd13c8f69 [2022-11-18 18:39:57,623 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:39:57,623 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60a8024d-3792-45d7-a6ad-76eeccd512ae/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2022-11-18 18:39:57,634 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60a8024d-3792-45d7-a6ad-76eeccd512ae/bin/uautomizer-TMbwUNV5ro/data/b9858ccb5/fcfa48c827c7410fa558e9e623b7b434/FLAGfd13c8f69 [2022-11-18 18:39:57,971 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60a8024d-3792-45d7-a6ad-76eeccd512ae/bin/uautomizer-TMbwUNV5ro/data/b9858ccb5/fcfa48c827c7410fa558e9e623b7b434 [2022-11-18 18:39:57,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:39:57,977 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:39:57,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:39:57,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:39:57,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:39:57,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:39:57" (1/1) ... [2022-11-18 18:39:57,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60574f43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:57, skipping insertion in model container [2022-11-18 18:39:57,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:39:57" (1/1) ... [2022-11-18 18:39:57,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:39:58,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:39:58,279 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60a8024d-3792-45d7-a6ad-76eeccd512ae/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5426,5439] [2022-11-18 18:39:58,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:39:58,297 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:39:58,339 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60a8024d-3792-45d7-a6ad-76eeccd512ae/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5426,5439] [2022-11-18 18:39:58,340 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:39:58,355 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:39:58,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:58 WrapperNode [2022-11-18 18:39:58,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:39:58,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:39:58,357 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:39:58,357 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:39:58,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:58" (1/1) ... [2022-11-18 18:39:58,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:58" (1/1) ... [2022-11-18 18:39:58,438 INFO L138 Inliner]: procedures = 22, calls = 110, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 255 [2022-11-18 18:39:58,445 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:39:58,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:39:58,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:39:58,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:39:58,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:58" (1/1) ... [2022-11-18 18:39:58,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:58" (1/1) ... [2022-11-18 18:39:58,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:58" (1/1) ... [2022-11-18 18:39:58,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:58" (1/1) ... [2022-11-18 18:39:58,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:58" (1/1) ... [2022-11-18 18:39:58,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:58" (1/1) ... [2022-11-18 18:39:58,502 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:58" (1/1) ... [2022-11-18 18:39:58,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:58" (1/1) ... [2022-11-18 18:39:58,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:39:58,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:39:58,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:39:58,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:39:58,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:58" (1/1) ... [2022-11-18 18:39:58,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:39:58,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60a8024d-3792-45d7-a6ad-76eeccd512ae/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:39:58,561 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60a8024d-3792-45d7-a6ad-76eeccd512ae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:39:58,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60a8024d-3792-45d7-a6ad-76eeccd512ae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:39:58,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:39:58,604 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 18:39:58,604 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 18:39:58,604 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 18:39:58,604 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 18:39:58,604 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 18:39:58,605 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 18:39:58,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:39:58,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:39:58,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:39:58,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 18:39:58,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 18:39:58,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:39:58,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:39:58,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:39:58,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:39:58,607 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:39:58,720 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:39:58,722 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:39:59,220 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:39:59,433 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:39:59,433 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 18:39:59,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:39:59 BoogieIcfgContainer [2022-11-18 18:39:59,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:39:59,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:39:59,450 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:39:59,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:39:59,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:39:57" (1/3) ... [2022-11-18 18:39:59,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4894f94b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:39:59, skipping insertion in model container [2022-11-18 18:39:59,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:58" (2/3) ... [2022-11-18 18:39:59,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4894f94b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:39:59, skipping insertion in model container [2022-11-18 18:39:59,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:39:59" (3/3) ... [2022-11-18 18:39:59,461 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2022-11-18 18:39:59,491 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:39:59,503 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:39:59,503 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 18:39:59,504 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:39:59,640 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 18:39:59,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 152 transitions, 328 flow [2022-11-18 18:39:59,762 INFO L130 PetriNetUnfolder]: 2/149 cut-off events. [2022-11-18 18:39:59,762 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 18:39:59,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 149 events. 2/149 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 108 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 107. Up to 2 conditions per place. [2022-11-18 18:39:59,767 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 152 transitions, 328 flow [2022-11-18 18:39:59,772 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 138 transitions, 294 flow [2022-11-18 18:39:59,783 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:39:59,790 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6fbaaf39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:39:59,791 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-18 18:39:59,836 INFO L130 PetriNetUnfolder]: 2/137 cut-off events. [2022-11-18 18:39:59,836 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 18:39:59,837 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:39:59,837 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:59,838 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 18:39:59,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:59,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1309877266, now seen corresponding path program 1 times [2022-11-18 18:39:59,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:59,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402132942] [2022-11-18 18:39:59,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:59,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:01,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:01,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:01,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402132942] [2022-11-18 18:40:01,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402132942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:01,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:01,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 18:40:01,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441792171] [2022-11-18 18:40:01,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:01,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 18:40:01,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:01,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 18:40:01,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:40:01,417 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 152 [2022-11-18 18:40:01,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 138 transitions, 294 flow. Second operand has 13 states, 13 states have (on average 107.3076923076923) internal successors, (1395), 13 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:01,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:01,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 152 [2022-11-18 18:40:01,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:03,131 INFO L130 PetriNetUnfolder]: 1125/2967 cut-off events. [2022-11-18 18:40:03,132 INFO L131 PetriNetUnfolder]: For 430/430 co-relation queries the response was YES. [2022-11-18 18:40:03,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5172 conditions, 2967 events. 1125/2967 cut-off events. For 430/430 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 23000 event pairs, 576 based on Foata normal form. 7/2936 useless extension candidates. Maximal degree in co-relation 4849. Up to 899 conditions per place. [2022-11-18 18:40:03,158 INFO L137 encePairwiseOnDemand]: 132/152 looper letters, 126 selfloop transitions, 21 changer transitions 21/259 dead transitions. [2022-11-18 18:40:03,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 259 transitions, 926 flow [2022-11-18 18:40:03,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 18:40:03,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 18:40:03,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2360 transitions. [2022-11-18 18:40:03,180 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7393483709273183 [2022-11-18 18:40:03,181 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2360 transitions. [2022-11-18 18:40:03,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2360 transitions. [2022-11-18 18:40:03,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:03,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2360 transitions. [2022-11-18 18:40:03,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 112.38095238095238) internal successors, (2360), 21 states have internal predecessors, (2360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:03,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:03,213 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:03,216 INFO L175 Difference]: Start difference. First operand has 146 places, 138 transitions, 294 flow. Second operand 21 states and 2360 transitions. [2022-11-18 18:40:03,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 259 transitions, 926 flow [2022-11-18 18:40:03,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 259 transitions, 878 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 18:40:03,228 INFO L231 Difference]: Finished difference. Result has 166 places, 150 transitions, 384 flow [2022-11-18 18:40:03,230 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=384, PETRI_PLACES=166, PETRI_TRANSITIONS=150} [2022-11-18 18:40:03,234 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 20 predicate places. [2022-11-18 18:40:03,234 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 150 transitions, 384 flow [2022-11-18 18:40:03,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 107.3076923076923) internal successors, (1395), 13 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:03,236 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:03,236 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:03,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:40:03,237 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 18:40:03,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:03,238 INFO L85 PathProgramCache]: Analyzing trace with hash 392733310, now seen corresponding path program 2 times [2022-11-18 18:40:03,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:03,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744747490] [2022-11-18 18:40:03,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:03,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:04,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:04,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:04,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744747490] [2022-11-18 18:40:04,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744747490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:04,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:04,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:40:04,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865578747] [2022-11-18 18:40:04,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:04,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:40:04,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:04,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:40:04,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:40:04,903 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-11-18 18:40:04,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 150 transitions, 384 flow. Second operand has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:04,911 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:04,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-11-18 18:40:04,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:07,343 INFO L130 PetriNetUnfolder]: 3897/8430 cut-off events. [2022-11-18 18:40:07,344 INFO L131 PetriNetUnfolder]: For 386/388 co-relation queries the response was YES. [2022-11-18 18:40:07,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15675 conditions, 8430 events. 3897/8430 cut-off events. For 386/388 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 71609 event pairs, 1968 based on Foata normal form. 78/8257 useless extension candidates. Maximal degree in co-relation 15641. Up to 3483 conditions per place. [2022-11-18 18:40:07,422 INFO L137 encePairwiseOnDemand]: 134/152 looper letters, 149 selfloop transitions, 45 changer transitions 0/300 dead transitions. [2022-11-18 18:40:07,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 300 transitions, 1083 flow [2022-11-18 18:40:07,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:40:07,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 18:40:07,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1743 transitions. [2022-11-18 18:40:07,428 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7644736842105263 [2022-11-18 18:40:07,428 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1743 transitions. [2022-11-18 18:40:07,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1743 transitions. [2022-11-18 18:40:07,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:07,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1743 transitions. [2022-11-18 18:40:07,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 116.2) internal successors, (1743), 15 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:07,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:07,445 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:07,445 INFO L175 Difference]: Start difference. First operand has 166 places, 150 transitions, 384 flow. Second operand 15 states and 1743 transitions. [2022-11-18 18:40:07,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 300 transitions, 1083 flow [2022-11-18 18:40:07,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 300 transitions, 1073 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-18 18:40:07,463 INFO L231 Difference]: Finished difference. Result has 173 places, 198 transitions, 686 flow [2022-11-18 18:40:07,464 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=686, PETRI_PLACES=173, PETRI_TRANSITIONS=198} [2022-11-18 18:40:07,465 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 27 predicate places. [2022-11-18 18:40:07,465 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 198 transitions, 686 flow [2022-11-18 18:40:07,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:07,466 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:07,466 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:07,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:40:07,467 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 18:40:07,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:07,471 INFO L85 PathProgramCache]: Analyzing trace with hash 558693998, now seen corresponding path program 3 times [2022-11-18 18:40:07,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:07,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749535744] [2022-11-18 18:40:07,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:07,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:07,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:07,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:07,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749535744] [2022-11-18 18:40:07,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749535744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:07,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:07,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:40:07,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457082454] [2022-11-18 18:40:07,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:07,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:40:07,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:07,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:40:07,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:40:07,776 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 152 [2022-11-18 18:40:07,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 198 transitions, 686 flow. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:07,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:07,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 152 [2022-11-18 18:40:07,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:09,201 INFO L130 PetriNetUnfolder]: 2597/6418 cut-off events. [2022-11-18 18:40:09,202 INFO L131 PetriNetUnfolder]: For 4591/4835 co-relation queries the response was YES. [2022-11-18 18:40:09,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16193 conditions, 6418 events. 2597/6418 cut-off events. For 4591/4835 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 57563 event pairs, 1518 based on Foata normal form. 144/6301 useless extension candidates. Maximal degree in co-relation 13688. Up to 3243 conditions per place. [2022-11-18 18:40:09,282 INFO L137 encePairwiseOnDemand]: 148/152 looper letters, 70 selfloop transitions, 2 changer transitions 0/220 dead transitions. [2022-11-18 18:40:09,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 220 transitions, 922 flow [2022-11-18 18:40:09,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:40:09,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:40:09,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2022-11-18 18:40:09,285 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8925438596491229 [2022-11-18 18:40:09,287 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2022-11-18 18:40:09,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2022-11-18 18:40:09,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:09,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2022-11-18 18:40:09,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:09,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:09,291 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:09,291 INFO L175 Difference]: Start difference. First operand has 173 places, 198 transitions, 686 flow. Second operand 3 states and 407 transitions. [2022-11-18 18:40:09,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 220 transitions, 922 flow [2022-11-18 18:40:09,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 220 transitions, 918 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:40:09,332 INFO L231 Difference]: Finished difference. Result has 174 places, 198 transitions, 692 flow [2022-11-18 18:40:09,332 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=692, PETRI_PLACES=174, PETRI_TRANSITIONS=198} [2022-11-18 18:40:09,335 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 28 predicate places. [2022-11-18 18:40:09,335 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 198 transitions, 692 flow [2022-11-18 18:40:09,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:09,336 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:09,336 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:09,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:40:09,337 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 18:40:09,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:09,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1633143796, now seen corresponding path program 4 times [2022-11-18 18:40:09,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:09,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994632165] [2022-11-18 18:40:09,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:09,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:09,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:09,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:09,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994632165] [2022-11-18 18:40:09,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994632165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:09,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:09,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:40:09,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188420330] [2022-11-18 18:40:09,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:09,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:40:09,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:09,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:40:09,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:40:09,623 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 152 [2022-11-18 18:40:09,623 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 198 transitions, 692 flow. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:09,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:09,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 152 [2022-11-18 18:40:09,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:10,980 INFO L130 PetriNetUnfolder]: 2592/6569 cut-off events. [2022-11-18 18:40:10,981 INFO L131 PetriNetUnfolder]: For 5073/5254 co-relation queries the response was YES. [2022-11-18 18:40:11,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17005 conditions, 6569 events. 2592/6569 cut-off events. For 5073/5254 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 59200 event pairs, 1277 based on Foata normal form. 214/6560 useless extension candidates. Maximal degree in co-relation 14293. Up to 2872 conditions per place. [2022-11-18 18:40:11,055 INFO L137 encePairwiseOnDemand]: 148/152 looper letters, 71 selfloop transitions, 2 changer transitions 0/221 dead transitions. [2022-11-18 18:40:11,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 221 transitions, 951 flow [2022-11-18 18:40:11,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:40:11,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:40:11,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2022-11-18 18:40:11,058 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8925438596491229 [2022-11-18 18:40:11,058 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2022-11-18 18:40:11,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2022-11-18 18:40:11,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:11,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2022-11-18 18:40:11,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:11,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:11,067 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:11,067 INFO L175 Difference]: Start difference. First operand has 174 places, 198 transitions, 692 flow. Second operand 3 states and 407 transitions. [2022-11-18 18:40:11,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 221 transitions, 951 flow [2022-11-18 18:40:11,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 221 transitions, 947 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:40:11,112 INFO L231 Difference]: Finished difference. Result has 175 places, 198 transitions, 698 flow [2022-11-18 18:40:11,114 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=698, PETRI_PLACES=175, PETRI_TRANSITIONS=198} [2022-11-18 18:40:11,115 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 29 predicate places. [2022-11-18 18:40:11,116 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 198 transitions, 698 flow [2022-11-18 18:40:11,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:11,116 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:11,116 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:11,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:40:11,117 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 18:40:11,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:11,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1313151022, now seen corresponding path program 5 times [2022-11-18 18:40:11,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:11,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739681873] [2022-11-18 18:40:11,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:11,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:11,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:11,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:11,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739681873] [2022-11-18 18:40:11,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739681873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:11,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:11,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:40:11,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351408824] [2022-11-18 18:40:11,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:11,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:40:11,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:11,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:40:11,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:40:11,441 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 152 [2022-11-18 18:40:11,442 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 198 transitions, 698 flow. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:11,442 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:11,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 152 [2022-11-18 18:40:11,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:12,645 INFO L130 PetriNetUnfolder]: 2449/6597 cut-off events. [2022-11-18 18:40:12,646 INFO L131 PetriNetUnfolder]: For 4873/4984 co-relation queries the response was YES. [2022-11-18 18:40:12,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17329 conditions, 6597 events. 2449/6597 cut-off events. For 4873/4984 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 61328 event pairs, 1513 based on Foata normal form. 140/6545 useless extension candidates. Maximal degree in co-relation 14772. Up to 2698 conditions per place. [2022-11-18 18:40:12,714 INFO L137 encePairwiseOnDemand]: 148/152 looper letters, 67 selfloop transitions, 2 changer transitions 0/216 dead transitions. [2022-11-18 18:40:12,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 216 transitions, 917 flow [2022-11-18 18:40:12,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:40:12,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:40:12,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2022-11-18 18:40:12,717 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8925438596491229 [2022-11-18 18:40:12,717 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2022-11-18 18:40:12,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2022-11-18 18:40:12,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:12,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2022-11-18 18:40:12,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:12,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:12,720 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:12,720 INFO L175 Difference]: Start difference. First operand has 175 places, 198 transitions, 698 flow. Second operand 3 states and 407 transitions. [2022-11-18 18:40:12,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 216 transitions, 917 flow [2022-11-18 18:40:12,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 216 transitions, 909 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-18 18:40:12,761 INFO L231 Difference]: Finished difference. Result has 176 places, 197 transitions, 697 flow [2022-11-18 18:40:12,762 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=697, PETRI_PLACES=176, PETRI_TRANSITIONS=197} [2022-11-18 18:40:12,762 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 30 predicate places. [2022-11-18 18:40:12,763 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 197 transitions, 697 flow [2022-11-18 18:40:12,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:12,763 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:12,763 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:12,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:40:12,764 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 18:40:12,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:12,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1805367584, now seen corresponding path program 6 times [2022-11-18 18:40:12,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:12,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190476168] [2022-11-18 18:40:12,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:12,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:13,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:13,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:13,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190476168] [2022-11-18 18:40:13,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190476168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:13,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:13,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 18:40:13,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033597516] [2022-11-18 18:40:13,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:13,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 18:40:13,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:13,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 18:40:13,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:40:13,322 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 152 [2022-11-18 18:40:13,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 197 transitions, 697 flow. Second operand has 13 states, 13 states have (on average 107.3076923076923) internal successors, (1395), 13 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:13,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:13,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 152 [2022-11-18 18:40:13,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:15,964 INFO L130 PetriNetUnfolder]: 4425/10845 cut-off events. [2022-11-18 18:40:15,964 INFO L131 PetriNetUnfolder]: For 9126/9292 co-relation queries the response was YES. [2022-11-18 18:40:16,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29315 conditions, 10845 events. 4425/10845 cut-off events. For 9126/9292 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 104169 event pairs, 1733 based on Foata normal form. 41/10625 useless extension candidates. Maximal degree in co-relation 25958. Up to 2900 conditions per place. [2022-11-18 18:40:16,185 INFO L137 encePairwiseOnDemand]: 136/152 looper letters, 197 selfloop transitions, 32 changer transitions 16/359 dead transitions. [2022-11-18 18:40:16,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 359 transitions, 1845 flow [2022-11-18 18:40:16,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:40:16,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 18:40:16,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1730 transitions. [2022-11-18 18:40:16,190 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7587719298245614 [2022-11-18 18:40:16,190 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1730 transitions. [2022-11-18 18:40:16,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1730 transitions. [2022-11-18 18:40:16,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:16,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1730 transitions. [2022-11-18 18:40:16,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 115.33333333333333) internal successors, (1730), 15 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:16,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:16,201 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:16,201 INFO L175 Difference]: Start difference. First operand has 176 places, 197 transitions, 697 flow. Second operand 15 states and 1730 transitions. [2022-11-18 18:40:16,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 359 transitions, 1845 flow [2022-11-18 18:40:16,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 359 transitions, 1839 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:40:16,254 INFO L231 Difference]: Finished difference. Result has 195 places, 218 transitions, 918 flow [2022-11-18 18:40:16,255 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=918, PETRI_PLACES=195, PETRI_TRANSITIONS=218} [2022-11-18 18:40:16,255 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 49 predicate places. [2022-11-18 18:40:16,256 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 218 transitions, 918 flow [2022-11-18 18:40:16,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 107.3076923076923) internal successors, (1395), 13 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:16,257 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:16,257 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:16,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:40:16,257 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 18:40:16,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:16,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1620198498, now seen corresponding path program 7 times [2022-11-18 18:40:16,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:16,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220416432] [2022-11-18 18:40:16,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:16,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:17,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:17,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:17,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220416432] [2022-11-18 18:40:17,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220416432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:17,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:17,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:40:17,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310045924] [2022-11-18 18:40:17,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:17,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:40:17,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:17,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:40:17,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:40:17,232 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-11-18 18:40:17,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 218 transitions, 918 flow. Second operand has 9 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:17,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:17,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-11-18 18:40:17,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:19,888 INFO L130 PetriNetUnfolder]: 4585/11672 cut-off events. [2022-11-18 18:40:19,905 INFO L131 PetriNetUnfolder]: For 15016/15354 co-relation queries the response was YES. [2022-11-18 18:40:19,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34060 conditions, 11672 events. 4585/11672 cut-off events. For 15016/15354 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 114849 event pairs, 2612 based on Foata normal form. 23/11273 useless extension candidates. Maximal degree in co-relation 33962. Up to 6758 conditions per place. [2022-11-18 18:40:20,015 INFO L137 encePairwiseOnDemand]: 141/152 looper letters, 129 selfloop transitions, 25 changer transitions 0/281 dead transitions. [2022-11-18 18:40:20,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 281 transitions, 1502 flow [2022-11-18 18:40:20,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:40:20,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 18:40:20,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 928 transitions. [2022-11-18 18:40:20,019 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7631578947368421 [2022-11-18 18:40:20,019 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 928 transitions. [2022-11-18 18:40:20,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 928 transitions. [2022-11-18 18:40:20,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:20,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 928 transitions. [2022-11-18 18:40:20,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:20,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 152.0) internal successors, (1368), 9 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:20,026 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 152.0) internal successors, (1368), 9 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:20,027 INFO L175 Difference]: Start difference. First operand has 195 places, 218 transitions, 918 flow. Second operand 8 states and 928 transitions. [2022-11-18 18:40:20,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 281 transitions, 1502 flow [2022-11-18 18:40:20,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 281 transitions, 1488 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-11-18 18:40:20,140 INFO L231 Difference]: Finished difference. Result has 197 places, 239 transitions, 1116 flow [2022-11-18 18:40:20,140 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1116, PETRI_PLACES=197, PETRI_TRANSITIONS=239} [2022-11-18 18:40:20,141 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 51 predicate places. [2022-11-18 18:40:20,141 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 239 transitions, 1116 flow [2022-11-18 18:40:20,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:20,142 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:20,143 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:20,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:40:20,143 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 18:40:20,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:20,144 INFO L85 PathProgramCache]: Analyzing trace with hash -215910526, now seen corresponding path program 8 times [2022-11-18 18:40:20,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:20,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081893300] [2022-11-18 18:40:20,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:20,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:20,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:20,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:20,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:20,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081893300] [2022-11-18 18:40:20,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081893300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:20,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:20,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:40:20,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486188992] [2022-11-18 18:40:20,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:20,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:40:20,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:20,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:40:20,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:40:20,992 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-11-18 18:40:20,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 239 transitions, 1116 flow. Second operand has 12 states, 12 states have (on average 106.66666666666667) internal successors, (1280), 12 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:20,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:20,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-11-18 18:40:20,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:24,522 INFO L130 PetriNetUnfolder]: 6382/15523 cut-off events. [2022-11-18 18:40:24,523 INFO L131 PetriNetUnfolder]: For 30071/30408 co-relation queries the response was YES. [2022-11-18 18:40:24,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49133 conditions, 15523 events. 6382/15523 cut-off events. For 30071/30408 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 155278 event pairs, 2095 based on Foata normal form. 124/15150 useless extension candidates. Maximal degree in co-relation 46958. Up to 6983 conditions per place. [2022-11-18 18:40:24,702 INFO L137 encePairwiseOnDemand]: 135/152 looper letters, 211 selfloop transitions, 99 changer transitions 0/437 dead transitions. [2022-11-18 18:40:24,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 437 transitions, 2849 flow [2022-11-18 18:40:24,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 18:40:24,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 18:40:24,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2398 transitions. [2022-11-18 18:40:24,709 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7512531328320802 [2022-11-18 18:40:24,709 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2398 transitions. [2022-11-18 18:40:24,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2398 transitions. [2022-11-18 18:40:24,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:24,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2398 transitions. [2022-11-18 18:40:24,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 114.19047619047619) internal successors, (2398), 21 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:24,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:24,725 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:24,725 INFO L175 Difference]: Start difference. First operand has 197 places, 239 transitions, 1116 flow. Second operand 21 states and 2398 transitions. [2022-11-18 18:40:24,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 437 transitions, 2849 flow [2022-11-18 18:40:24,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 437 transitions, 2797 flow, removed 24 selfloop flow, removed 2 redundant places. [2022-11-18 18:40:24,969 INFO L231 Difference]: Finished difference. Result has 226 places, 320 transitions, 2078 flow [2022-11-18 18:40:24,969 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2078, PETRI_PLACES=226, PETRI_TRANSITIONS=320} [2022-11-18 18:40:24,973 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 80 predicate places. [2022-11-18 18:40:24,973 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 320 transitions, 2078 flow [2022-11-18 18:40:24,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 106.66666666666667) internal successors, (1280), 12 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:24,974 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:24,975 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:24,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:40:24,975 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 18:40:24,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:24,976 INFO L85 PathProgramCache]: Analyzing trace with hash -929476722, now seen corresponding path program 9 times [2022-11-18 18:40:24,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:24,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938762682] [2022-11-18 18:40:24,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:24,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:26,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:26,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:26,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938762682] [2022-11-18 18:40:26,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938762682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:26,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:26,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:40:26,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512781874] [2022-11-18 18:40:26,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:26,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:40:26,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:26,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:40:26,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:40:26,545 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-11-18 18:40:26,547 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 320 transitions, 2078 flow. Second operand has 10 states, 10 states have (on average 107.4) internal successors, (1074), 10 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:26,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:26,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-11-18 18:40:26,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:29,874 INFO L130 PetriNetUnfolder]: 6698/16307 cut-off events. [2022-11-18 18:40:29,875 INFO L131 PetriNetUnfolder]: For 63742/64247 co-relation queries the response was YES. [2022-11-18 18:40:29,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60578 conditions, 16307 events. 6698/16307 cut-off events. For 63742/64247 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 165932 event pairs, 3785 based on Foata normal form. 27/15754 useless extension candidates. Maximal degree in co-relation 58069. Up to 10301 conditions per place. [2022-11-18 18:40:30,050 INFO L137 encePairwiseOnDemand]: 139/152 looper letters, 240 selfloop transitions, 37 changer transitions 0/404 dead transitions. [2022-11-18 18:40:30,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 404 transitions, 3198 flow [2022-11-18 18:40:30,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:40:30,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 18:40:30,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1256 transitions. [2022-11-18 18:40:30,054 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7511961722488039 [2022-11-18 18:40:30,054 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1256 transitions. [2022-11-18 18:40:30,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1256 transitions. [2022-11-18 18:40:30,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:30,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1256 transitions. [2022-11-18 18:40:30,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 114.18181818181819) internal successors, (1256), 11 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:30,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:30,063 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:30,064 INFO L175 Difference]: Start difference. First operand has 226 places, 320 transitions, 2078 flow. Second operand 11 states and 1256 transitions. [2022-11-18 18:40:30,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 404 transitions, 3198 flow [2022-11-18 18:40:30,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 404 transitions, 2922 flow, removed 136 selfloop flow, removed 2 redundant places. [2022-11-18 18:40:30,819 INFO L231 Difference]: Finished difference. Result has 241 places, 350 transitions, 2271 flow [2022-11-18 18:40:30,820 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1834, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2271, PETRI_PLACES=241, PETRI_TRANSITIONS=350} [2022-11-18 18:40:30,820 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 95 predicate places. [2022-11-18 18:40:30,820 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 350 transitions, 2271 flow [2022-11-18 18:40:30,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 107.4) internal successors, (1074), 10 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:30,821 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:30,821 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:30,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 18:40:30,822 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 18:40:30,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:30,822 INFO L85 PathProgramCache]: Analyzing trace with hash 534821868, now seen corresponding path program 10 times [2022-11-18 18:40:30,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:30,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654585018] [2022-11-18 18:40:30,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:30,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:31,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:31,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:31,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654585018] [2022-11-18 18:40:31,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654585018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:31,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:31,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 18:40:31,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340388935] [2022-11-18 18:40:31,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:31,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 18:40:31,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:31,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 18:40:31,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:40:31,307 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 152 [2022-11-18 18:40:31,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 350 transitions, 2271 flow. Second operand has 13 states, 13 states have (on average 107.3076923076923) internal successors, (1395), 13 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:31,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:31,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 152 [2022-11-18 18:40:31,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:36,104 INFO L130 PetriNetUnfolder]: 7567/17672 cut-off events. [2022-11-18 18:40:36,104 INFO L131 PetriNetUnfolder]: For 69337/70032 co-relation queries the response was YES. [2022-11-18 18:40:36,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64530 conditions, 17672 events. 7567/17672 cut-off events. For 69337/70032 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 178011 event pairs, 2746 based on Foata normal form. 211/17465 useless extension candidates. Maximal degree in co-relation 62997. Up to 5204 conditions per place. [2022-11-18 18:40:36,422 INFO L137 encePairwiseOnDemand]: 136/152 looper letters, 337 selfloop transitions, 37 changer transitions 6/569 dead transitions. [2022-11-18 18:40:36,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 569 transitions, 4371 flow [2022-11-18 18:40:36,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:40:36,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 18:40:36,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1728 transitions. [2022-11-18 18:40:36,432 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7578947368421053 [2022-11-18 18:40:36,433 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1728 transitions. [2022-11-18 18:40:36,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1728 transitions. [2022-11-18 18:40:36,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:36,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1728 transitions. [2022-11-18 18:40:36,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 115.2) internal successors, (1728), 15 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:36,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:36,457 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:36,465 INFO L175 Difference]: Start difference. First operand has 241 places, 350 transitions, 2271 flow. Second operand 15 states and 1728 transitions. [2022-11-18 18:40:36,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 569 transitions, 4371 flow [2022-11-18 18:40:36,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 569 transitions, 4303 flow, removed 32 selfloop flow, removed 2 redundant places. [2022-11-18 18:40:36,979 INFO L231 Difference]: Finished difference. Result has 259 places, 357 transitions, 2367 flow [2022-11-18 18:40:36,980 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2207, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2367, PETRI_PLACES=259, PETRI_TRANSITIONS=357} [2022-11-18 18:40:36,980 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 113 predicate places. [2022-11-18 18:40:36,981 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 357 transitions, 2367 flow [2022-11-18 18:40:36,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 107.3076923076923) internal successors, (1395), 13 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:36,982 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:36,982 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:36,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 18:40:36,983 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 18:40:36,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:36,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1689956312, now seen corresponding path program 11 times [2022-11-18 18:40:36,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:36,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688161309] [2022-11-18 18:40:36,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:36,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:37,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:38,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:38,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:38,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688161309] [2022-11-18 18:40:38,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688161309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:38,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:38,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:40:38,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845493059] [2022-11-18 18:40:38,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:38,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:40:38,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:38,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:40:38,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:40:38,142 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-11-18 18:40:38,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 357 transitions, 2367 flow. Second operand has 9 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:38,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:38,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-11-18 18:40:38,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:41,904 INFO L130 PetriNetUnfolder]: 6396/15698 cut-off events. [2022-11-18 18:40:41,905 INFO L131 PetriNetUnfolder]: For 64612/65184 co-relation queries the response was YES. [2022-11-18 18:40:42,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59863 conditions, 15698 events. 6396/15698 cut-off events. For 64612/65184 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 159029 event pairs, 2648 based on Foata normal form. 193/15370 useless extension candidates. Maximal degree in co-relation 59726. Up to 8951 conditions per place. [2022-11-18 18:40:42,496 INFO L137 encePairwiseOnDemand]: 140/152 looper letters, 202 selfloop transitions, 72 changer transitions 0/408 dead transitions. [2022-11-18 18:40:42,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 408 transitions, 3310 flow [2022-11-18 18:40:42,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:40:42,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 18:40:42,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 925 transitions. [2022-11-18 18:40:42,501 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7606907894736842 [2022-11-18 18:40:42,501 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 925 transitions. [2022-11-18 18:40:42,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 925 transitions. [2022-11-18 18:40:42,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:42,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 925 transitions. [2022-11-18 18:40:42,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 115.625) internal successors, (925), 8 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:42,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 152.0) internal successors, (1368), 9 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:42,508 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 152.0) internal successors, (1368), 9 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:42,508 INFO L175 Difference]: Start difference. First operand has 259 places, 357 transitions, 2367 flow. Second operand 8 states and 925 transitions. [2022-11-18 18:40:42,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 408 transitions, 3310 flow [2022-11-18 18:40:43,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 408 transitions, 3255 flow, removed 16 selfloop flow, removed 7 redundant places. [2022-11-18 18:40:43,060 INFO L231 Difference]: Finished difference. Result has 260 places, 364 transitions, 2659 flow [2022-11-18 18:40:43,061 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2279, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2659, PETRI_PLACES=260, PETRI_TRANSITIONS=364} [2022-11-18 18:40:43,061 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 114 predicate places. [2022-11-18 18:40:43,062 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 364 transitions, 2659 flow [2022-11-18 18:40:43,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:43,062 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:43,063 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:43,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 18:40:43,063 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 18:40:43,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:43,064 INFO L85 PathProgramCache]: Analyzing trace with hash -624269310, now seen corresponding path program 12 times [2022-11-18 18:40:43,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:43,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295425960] [2022-11-18 18:40:43,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:43,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:43,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:43,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:43,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295425960] [2022-11-18 18:40:43,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295425960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:43,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:43,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-18 18:40:43,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341166414] [2022-11-18 18:40:43,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:43,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 18:40:43,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:43,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 18:40:43,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:40:43,939 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-11-18 18:40:43,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 364 transitions, 2659 flow. Second operand has 14 states, 14 states have (on average 106.14285714285714) internal successors, (1486), 14 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:43,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:43,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-11-18 18:40:43,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:53,668 INFO L130 PetriNetUnfolder]: 15844/37503 cut-off events. [2022-11-18 18:40:53,668 INFO L131 PetriNetUnfolder]: For 183716/185155 co-relation queries the response was YES. [2022-11-18 18:40:54,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148272 conditions, 37503 events. 15844/37503 cut-off events. For 183716/185155 co-relation queries the response was YES. Maximal size of possible extension queue 1495. Compared 431196 event pairs, 4095 based on Foata normal form. 769/37177 useless extension candidates. Maximal degree in co-relation 147298. Up to 7865 conditions per place. [2022-11-18 18:40:54,221 INFO L137 encePairwiseOnDemand]: 130/152 looper letters, 475 selfloop transitions, 328 changer transitions 32/969 dead transitions. [2022-11-18 18:40:54,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 969 transitions, 9250 flow [2022-11-18 18:40:54,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 18:40:54,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-18 18:40:54,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2629 transitions. [2022-11-18 18:40:54,228 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7861842105263158 [2022-11-18 18:40:54,228 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2629 transitions. [2022-11-18 18:40:54,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2629 transitions. [2022-11-18 18:40:54,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:54,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2629 transitions. [2022-11-18 18:40:54,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 119.5) internal successors, (2629), 22 states have internal predecessors, (2629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:54,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:54,242 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:54,242 INFO L175 Difference]: Start difference. First operand has 260 places, 364 transitions, 2659 flow. Second operand 22 states and 2629 transitions. [2022-11-18 18:40:54,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 969 transitions, 9250 flow [2022-11-18 18:40:56,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 969 transitions, 9107 flow, removed 27 selfloop flow, removed 3 redundant places. [2022-11-18 18:40:56,922 INFO L231 Difference]: Finished difference. Result has 296 places, 634 transitions, 6855 flow [2022-11-18 18:40:56,923 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2598, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6855, PETRI_PLACES=296, PETRI_TRANSITIONS=634} [2022-11-18 18:40:56,924 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 150 predicate places. [2022-11-18 18:40:56,924 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 634 transitions, 6855 flow [2022-11-18 18:40:56,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 106.14285714285714) internal successors, (1486), 14 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:56,925 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:56,925 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:56,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 18:40:56,926 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 18:40:56,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:56,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1905254318, now seen corresponding path program 13 times [2022-11-18 18:40:56,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:56,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265075386] [2022-11-18 18:40:56,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:56,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:57,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:57,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:57,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265075386] [2022-11-18 18:40:57,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265075386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:57,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:57,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:40:57,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334322660] [2022-11-18 18:40:57,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:57,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:40:57,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:57,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:40:57,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:40:57,863 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-11-18 18:40:57,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 634 transitions, 6855 flow. Second operand has 12 states, 12 states have (on average 106.66666666666667) internal successors, (1280), 12 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:57,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:57,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-11-18 18:40:57,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand