./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_c8db94f2-3136-428a-8185-b2f26a94ce05/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db94f2-3136-428a-8185-b2f26a94ce05/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db94f2-3136-428a-8185-b2f26a94ce05/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db94f2-3136-428a-8185-b2f26a94ce05/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db94f2-3136-428a-8185-b2f26a94ce05/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db94f2-3136-428a-8185-b2f26a94ce05/bin/uautomizer-Dbtcem3rbc --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 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 --- 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-5e519f3 [2022-11-02 20:42:10,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:42:10,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:42:10,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:42:10,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:42:10,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:42:10,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:42:10,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:42:10,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:42:10,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:42:10,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:42:10,518 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:42:10,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:42:10,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:42:10,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:42:10,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:42:10,524 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:42:10,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:42:10,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:42:10,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:42:10,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:42:10,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:42:10,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:42:10,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:42:10,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:42:10,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:42:10,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:42:10,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:42:10,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:42:10,556 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:42:10,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:42:10,558 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:42:10,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:42:10,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:42:10,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:42:10,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:42:10,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:42:10,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:42:10,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:42:10,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:42:10,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:42:10,576 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db94f2-3136-428a-8185-b2f26a94ce05/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:42:10,618 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:42:10,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:42:10,619 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:42:10,620 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:42:10,621 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:42:10,621 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:42:10,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:42:10,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:42:10,622 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:42:10,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:42:10,624 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:42:10,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:42:10,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:42:10,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:42:10,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:42:10,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:42:10,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:42:10,626 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:42:10,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:42:10,626 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:42:10,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:42:10,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:42:10,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:42:10,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:42:10,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:42:10,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:42:10,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:42:10,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:42:10,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:42:10,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:42:10,631 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:42:10,631 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:42:10,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:42:10,632 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_c8db94f2-3136-428a-8185-b2f26a94ce05/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db94f2-3136-428a-8185-b2f26a94ce05/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 [2022-11-02 20:42:10,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:42:11,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:42:11,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:42:11,032 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:42:11,033 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:42:11,034 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db94f2-3136-428a-8185-b2f26a94ce05/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2022-11-02 20:42:11,133 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db94f2-3136-428a-8185-b2f26a94ce05/bin/uautomizer-Dbtcem3rbc/data/bed98de4b/6d3a7c7a1e144b8da217ff22d4978002/FLAGa53489eff [2022-11-02 20:42:11,633 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:42:11,633 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db94f2-3136-428a-8185-b2f26a94ce05/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2022-11-02 20:42:11,646 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db94f2-3136-428a-8185-b2f26a94ce05/bin/uautomizer-Dbtcem3rbc/data/bed98de4b/6d3a7c7a1e144b8da217ff22d4978002/FLAGa53489eff [2022-11-02 20:42:11,965 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db94f2-3136-428a-8185-b2f26a94ce05/bin/uautomizer-Dbtcem3rbc/data/bed98de4b/6d3a7c7a1e144b8da217ff22d4978002 [2022-11-02 20:42:11,969 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:42:11,971 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:42:11,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:42:11,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:42:11,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:42:11,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:42:11" (1/1) ... [2022-11-02 20:42:11,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74a6fba8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:11, skipping insertion in model container [2022-11-02 20:42:11,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:42:11" (1/1) ... [2022-11-02 20:42:11,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:42:12,029 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:42:12,360 WARN L230 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_c8db94f2-3136-428a-8185-b2f26a94ce05/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2022-11-02 20:42:12,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:42:12,388 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:42:12,463 WARN L230 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_c8db94f2-3136-428a-8185-b2f26a94ce05/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2022-11-02 20:42:12,466 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:42:12,481 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:42:12,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:12 WrapperNode [2022-11-02 20:42:12,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:42:12,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:42:12,483 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:42:12,483 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:42:12,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:12" (1/1) ... [2022-11-02 20:42:12,501 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:12" (1/1) ... [2022-11-02 20:42:12,539 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 460 [2022-11-02 20:42:12,539 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:42:12,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:42:12,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:42:12,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:42:12,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:12" (1/1) ... [2022-11-02 20:42:12,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:12" (1/1) ... [2022-11-02 20:42:12,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:12" (1/1) ... [2022-11-02 20:42:12,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:12" (1/1) ... [2022-11-02 20:42:12,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:12" (1/1) ... [2022-11-02 20:42:12,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:12" (1/1) ... [2022-11-02 20:42:12,577 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:12" (1/1) ... [2022-11-02 20:42:12,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:12" (1/1) ... [2022-11-02 20:42:12,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:42:12,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:42:12,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:42:12,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:42:12,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:12" (1/1) ... [2022-11-02 20:42:12,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:42:12,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db94f2-3136-428a-8185-b2f26a94ce05/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:42:12,623 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db94f2-3136-428a-8185-b2f26a94ce05/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:42:12,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db94f2-3136-428a-8185-b2f26a94ce05/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:42:12,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:42:12,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:42:12,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:42:12,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:42:12,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:42:12,689 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:42:12,689 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:42:12,690 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:42:12,691 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-02 20:42:12,691 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-02 20:42:12,691 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-02 20:42:12,691 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-02 20:42:12,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:42:12,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:42:12,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:42:12,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:42:12,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:42:12,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:42:12,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:42:12,695 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:42:12,870 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:42:12,888 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:42:13,707 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:42:14,094 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:42:14,094 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-02 20:42:14,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:42:14 BoogieIcfgContainer [2022-11-02 20:42:14,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:42:14,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:42:14,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:42:14,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:42:14,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:42:11" (1/3) ... [2022-11-02 20:42:14,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7894fac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:42:14, skipping insertion in model container [2022-11-02 20:42:14,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:12" (2/3) ... [2022-11-02 20:42:14,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7894fac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:42:14, skipping insertion in model container [2022-11-02 20:42:14,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:42:14" (3/3) ... [2022-11-02 20:42:14,113 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2022-11-02 20:42:14,122 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:42:14,132 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:42:14,133 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:42:14,133 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:42:14,207 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-02 20:42:14,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 332 places, 356 transitions, 744 flow [2022-11-02 20:42:14,465 INFO L130 PetriNetUnfolder]: 37/352 cut-off events. [2022-11-02 20:42:14,465 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 20:42:14,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 369 conditions, 352 events. 37/352 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 238 event pairs, 0 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 308. Up to 8 conditions per place. [2022-11-02 20:42:14,470 INFO L82 GeneralOperation]: Start removeDead. Operand has 332 places, 356 transitions, 744 flow [2022-11-02 20:42:14,477 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 315 places, 339 transitions, 702 flow [2022-11-02 20:42:14,490 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:42:14,501 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;@5a6942e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:42:14,502 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-02 20:42:14,576 INFO L130 PetriNetUnfolder]: 37/338 cut-off events. [2022-11-02 20:42:14,576 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 20:42:14,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:14,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:14,578 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:42:14,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:14,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1404032509, now seen corresponding path program 1 times [2022-11-02 20:42:14,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:14,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710216108] [2022-11-02 20:42:14,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:14,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:14,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:15,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:15,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:15,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710216108] [2022-11-02 20:42:15,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710216108] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:15,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:15,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:42:15,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942339865] [2022-11-02 20:42:15,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:15,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:42:15,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:15,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:42:15,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:42:15,063 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 356 [2022-11-02 20:42:15,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 339 transitions, 702 flow. Second operand has 2 states, 2 states have (on average 324.5) internal successors, (649), 2 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:15,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:15,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 356 [2022-11-02 20:42:15,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:15,231 INFO L130 PetriNetUnfolder]: 56/358 cut-off events. [2022-11-02 20:42:15,232 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-02 20:42:15,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 358 events. 56/358 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 266 event pairs, 0 based on Foata normal form. 29/355 useless extension candidates. Maximal degree in co-relation 334. Up to 57 conditions per place. [2022-11-02 20:42:15,240 INFO L137 encePairwiseOnDemand]: 339/356 looper letters, 20 selfloop transitions, 0 changer transitions 9/322 dead transitions. [2022-11-02 20:42:15,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 322 transitions, 708 flow [2022-11-02 20:42:15,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:42:15,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:42:15,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 673 transitions. [2022-11-02 20:42:15,265 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9452247191011236 [2022-11-02 20:42:15,266 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 673 transitions. [2022-11-02 20:42:15,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 673 transitions. [2022-11-02 20:42:15,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:15,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 673 transitions. [2022-11-02 20:42:15,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 336.5) internal successors, (673), 2 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:15,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 356.0) internal successors, (1068), 3 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:15,299 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 356.0) internal successors, (1068), 3 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:15,301 INFO L175 Difference]: Start difference. First operand has 315 places, 339 transitions, 702 flow. Second operand 2 states and 673 transitions. [2022-11-02 20:42:15,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 322 transitions, 708 flow [2022-11-02 20:42:15,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 322 transitions, 692 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-02 20:42:15,326 INFO L231 Difference]: Finished difference. Result has 308 places, 313 transitions, 634 flow [2022-11-02 20:42:15,328 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=634, PETRI_PLACES=308, PETRI_TRANSITIONS=313} [2022-11-02 20:42:15,333 INFO L287 CegarLoopForPetriNet]: 315 programPoint places, -7 predicate places. [2022-11-02 20:42:15,333 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 313 transitions, 634 flow [2022-11-02 20:42:15,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 324.5) internal successors, (649), 2 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:15,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:15,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:15,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:42:15,337 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:42:15,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:15,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1859772742, now seen corresponding path program 1 times [2022-11-02 20:42:15,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:15,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707945760] [2022-11-02 20:42:15,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:15,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:16,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:16,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:16,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707945760] [2022-11-02 20:42:16,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707945760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:16,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:16,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:42:16,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509247068] [2022-11-02 20:42:16,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:16,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:42:16,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:16,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:42:16,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:42:16,384 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 356 [2022-11-02 20:42:16,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 313 transitions, 634 flow. Second operand has 5 states, 5 states have (on average 280.2) internal successors, (1401), 5 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:16,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:16,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 356 [2022-11-02 20:42:16,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:16,733 INFO L130 PetriNetUnfolder]: 107/476 cut-off events. [2022-11-02 20:42:16,733 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-02 20:42:16,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 476 events. 107/476 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 705 event pairs, 0 based on Foata normal form. 1/435 useless extension candidates. Maximal degree in co-relation 635. Up to 85 conditions per place. [2022-11-02 20:42:16,740 INFO L137 encePairwiseOnDemand]: 346/356 looper letters, 69 selfloop transitions, 7 changer transitions 4/335 dead transitions. [2022-11-02 20:42:16,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 335 transitions, 845 flow [2022-11-02 20:42:16,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:42:16,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:42:16,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1436 transitions. [2022-11-02 20:42:16,745 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8067415730337079 [2022-11-02 20:42:16,746 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1436 transitions. [2022-11-02 20:42:16,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1436 transitions. [2022-11-02 20:42:16,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:16,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1436 transitions. [2022-11-02 20:42:16,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 287.2) internal successors, (1436), 5 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:16,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 356.0) internal successors, (2136), 6 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:16,756 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 356.0) internal successors, (2136), 6 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:16,756 INFO L175 Difference]: Start difference. First operand has 308 places, 313 transitions, 634 flow. Second operand 5 states and 1436 transitions. [2022-11-02 20:42:16,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 335 transitions, 845 flow [2022-11-02 20:42:16,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 335 transitions, 845 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:42:16,768 INFO L231 Difference]: Finished difference. Result has 306 places, 319 transitions, 685 flow [2022-11-02 20:42:16,769 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=685, PETRI_PLACES=306, PETRI_TRANSITIONS=319} [2022-11-02 20:42:16,769 INFO L287 CegarLoopForPetriNet]: 315 programPoint places, -9 predicate places. [2022-11-02 20:42:16,770 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 319 transitions, 685 flow [2022-11-02 20:42:16,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 280.2) internal successors, (1401), 5 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:16,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:16,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:16,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:42:16,772 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:42:16,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:16,773 INFO L85 PathProgramCache]: Analyzing trace with hash -739310667, now seen corresponding path program 1 times [2022-11-02 20:42:16,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:16,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088749804] [2022-11-02 20:42:16,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:16,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:17,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:17,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:17,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088749804] [2022-11-02 20:42:17,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088749804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:17,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:17,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:42:17,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246885542] [2022-11-02 20:42:17,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:17,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:42:17,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:17,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:42:17,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:42:17,459 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 356 [2022-11-02 20:42:17,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 319 transitions, 685 flow. Second operand has 3 states, 3 states have (on average 316.3333333333333) internal successors, (949), 3 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:17,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:17,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 356 [2022-11-02 20:42:17,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:17,719 INFO L130 PetriNetUnfolder]: 171/648 cut-off events. [2022-11-02 20:42:17,719 INFO L131 PetriNetUnfolder]: For 86/90 co-relation queries the response was YES. [2022-11-02 20:42:17,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 957 conditions, 648 events. 171/648 cut-off events. For 86/90 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1476 event pairs, 3 based on Foata normal form. 19/590 useless extension candidates. Maximal degree in co-relation 950. Up to 124 conditions per place. [2022-11-02 20:42:17,730 INFO L137 encePairwiseOnDemand]: 345/356 looper letters, 43 selfloop transitions, 8 changer transitions 0/337 dead transitions. [2022-11-02 20:42:17,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 337 transitions, 844 flow [2022-11-02 20:42:17,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:42:17,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:42:17,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 978 transitions. [2022-11-02 20:42:17,735 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9157303370786517 [2022-11-02 20:42:17,735 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 978 transitions. [2022-11-02 20:42:17,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 978 transitions. [2022-11-02 20:42:17,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:17,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 978 transitions. [2022-11-02 20:42:17,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:17,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:17,741 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:17,741 INFO L175 Difference]: Start difference. First operand has 306 places, 319 transitions, 685 flow. Second operand 3 states and 978 transitions. [2022-11-02 20:42:17,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 337 transitions, 844 flow [2022-11-02 20:42:17,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 337 transitions, 830 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-02 20:42:17,749 INFO L231 Difference]: Finished difference. Result has 304 places, 322 transitions, 722 flow [2022-11-02 20:42:17,750 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=722, PETRI_PLACES=304, PETRI_TRANSITIONS=322} [2022-11-02 20:42:17,752 INFO L287 CegarLoopForPetriNet]: 315 programPoint places, -11 predicate places. [2022-11-02 20:42:17,752 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 322 transitions, 722 flow [2022-11-02 20:42:17,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 316.3333333333333) internal successors, (949), 3 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:17,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:17,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:17,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:42:17,754 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:42:17,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:17,757 INFO L85 PathProgramCache]: Analyzing trace with hash 328271135, now seen corresponding path program 1 times [2022-11-02 20:42:17,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:17,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526096190] [2022-11-02 20:42:17,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:17,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:17,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:18,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:18,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:18,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526096190] [2022-11-02 20:42:18,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526096190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:18,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:18,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:42:18,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243524241] [2022-11-02 20:42:18,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:18,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:42:18,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:18,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:42:18,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:42:18,195 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 356 [2022-11-02 20:42:18,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 322 transitions, 722 flow. Second operand has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:18,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:18,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 356 [2022-11-02 20:42:18,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:18,550 INFO L130 PetriNetUnfolder]: 317/1067 cut-off events. [2022-11-02 20:42:18,550 INFO L131 PetriNetUnfolder]: For 274/286 co-relation queries the response was YES. [2022-11-02 20:42:18,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1737 conditions, 1067 events. 317/1067 cut-off events. For 274/286 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4029 event pairs, 15 based on Foata normal form. 15/926 useless extension candidates. Maximal degree in co-relation 1731. Up to 194 conditions per place. [2022-11-02 20:42:18,568 INFO L137 encePairwiseOnDemand]: 353/356 looper letters, 57 selfloop transitions, 2 changer transitions 0/348 dead transitions. [2022-11-02 20:42:18,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 348 transitions, 946 flow [2022-11-02 20:42:18,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:42:18,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:42:18,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 985 transitions. [2022-11-02 20:42:18,576 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9222846441947565 [2022-11-02 20:42:18,576 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 985 transitions. [2022-11-02 20:42:18,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 985 transitions. [2022-11-02 20:42:18,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:18,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 985 transitions. [2022-11-02 20:42:18,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 328.3333333333333) internal successors, (985), 3 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:18,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:18,583 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:18,583 INFO L175 Difference]: Start difference. First operand has 304 places, 322 transitions, 722 flow. Second operand 3 states and 985 transitions. [2022-11-02 20:42:18,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 348 transitions, 946 flow [2022-11-02 20:42:18,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 348 transitions, 935 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:42:18,593 INFO L231 Difference]: Finished difference. Result has 306 places, 323 transitions, 728 flow [2022-11-02 20:42:18,594 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=728, PETRI_PLACES=306, PETRI_TRANSITIONS=323} [2022-11-02 20:42:18,595 INFO L287 CegarLoopForPetriNet]: 315 programPoint places, -9 predicate places. [2022-11-02 20:42:18,595 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 323 transitions, 728 flow [2022-11-02 20:42:18,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:18,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:18,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:18,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:42:18,598 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:42:18,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:18,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1704022611, now seen corresponding path program 1 times [2022-11-02 20:42:18,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:18,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308849803] [2022-11-02 20:42:18,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:18,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:18,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:18,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:18,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308849803] [2022-11-02 20:42:18,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308849803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:18,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:18,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:42:18,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110972023] [2022-11-02 20:42:18,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:18,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:42:18,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:18,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:42:18,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:42:18,975 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 356 [2022-11-02 20:42:18,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 323 transitions, 728 flow. Second operand has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:18,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:18,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 356 [2022-11-02 20:42:18,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:19,531 INFO L130 PetriNetUnfolder]: 579/1866 cut-off events. [2022-11-02 20:42:19,531 INFO L131 PetriNetUnfolder]: For 684/700 co-relation queries the response was YES. [2022-11-02 20:42:19,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3123 conditions, 1866 events. 579/1866 cut-off events. For 684/700 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 10167 event pairs, 29 based on Foata normal form. 33/1569 useless extension candidates. Maximal degree in co-relation 3116. Up to 363 conditions per place. [2022-11-02 20:42:19,565 INFO L137 encePairwiseOnDemand]: 353/356 looper letters, 59 selfloop transitions, 2 changer transitions 0/350 dead transitions. [2022-11-02 20:42:19,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 350 transitions, 964 flow [2022-11-02 20:42:19,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:42:19,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:42:19,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 985 transitions. [2022-11-02 20:42:19,568 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9222846441947565 [2022-11-02 20:42:19,568 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 985 transitions. [2022-11-02 20:42:19,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 985 transitions. [2022-11-02 20:42:19,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:19,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 985 transitions. [2022-11-02 20:42:19,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 328.3333333333333) internal successors, (985), 3 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:19,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:19,575 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:19,576 INFO L175 Difference]: Start difference. First operand has 306 places, 323 transitions, 728 flow. Second operand 3 states and 985 transitions. [2022-11-02 20:42:19,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 350 transitions, 964 flow [2022-11-02 20:42:19,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 350 transitions, 961 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:42:19,584 INFO L231 Difference]: Finished difference. Result has 308 places, 324 transitions, 740 flow [2022-11-02 20:42:19,585 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=740, PETRI_PLACES=308, PETRI_TRANSITIONS=324} [2022-11-02 20:42:19,586 INFO L287 CegarLoopForPetriNet]: 315 programPoint places, -7 predicate places. [2022-11-02 20:42:19,586 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 324 transitions, 740 flow [2022-11-02 20:42:19,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:19,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:19,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:19,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:42:19,588 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:42:19,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:19,589 INFO L85 PathProgramCache]: Analyzing trace with hash -472015202, now seen corresponding path program 1 times [2022-11-02 20:42:19,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:19,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785018135] [2022-11-02 20:42:19,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:19,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:19,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:19,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:19,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785018135] [2022-11-02 20:42:19,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785018135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:19,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:19,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:42:19,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204134190] [2022-11-02 20:42:19,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:19,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:42:19,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:19,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:42:19,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:42:19,734 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 356 [2022-11-02 20:42:19,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 324 transitions, 740 flow. Second operand has 3 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:19,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:19,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 356 [2022-11-02 20:42:19,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:20,556 INFO L130 PetriNetUnfolder]: 1212/3067 cut-off events. [2022-11-02 20:42:20,556 INFO L131 PetriNetUnfolder]: For 1592/1718 co-relation queries the response was YES. [2022-11-02 20:42:20,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5821 conditions, 3067 events. 1212/3067 cut-off events. For 1592/1718 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 18691 event pairs, 155 based on Foata normal form. 27/2526 useless extension candidates. Maximal degree in co-relation 5813. Up to 847 conditions per place. [2022-11-02 20:42:20,608 INFO L137 encePairwiseOnDemand]: 351/356 looper letters, 52 selfloop transitions, 6 changer transitions 0/346 dead transitions. [2022-11-02 20:42:20,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 346 transitions, 957 flow [2022-11-02 20:42:20,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:42:20,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:42:20,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 980 transitions. [2022-11-02 20:42:20,611 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9176029962546817 [2022-11-02 20:42:20,611 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 980 transitions. [2022-11-02 20:42:20,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 980 transitions. [2022-11-02 20:42:20,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:20,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 980 transitions. [2022-11-02 20:42:20,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:20,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:20,618 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:20,619 INFO L175 Difference]: Start difference. First operand has 308 places, 324 transitions, 740 flow. Second operand 3 states and 980 transitions. [2022-11-02 20:42:20,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 346 transitions, 957 flow [2022-11-02 20:42:20,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 346 transitions, 954 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:42:20,633 INFO L231 Difference]: Finished difference. Result has 311 places, 325 transitions, 768 flow [2022-11-02 20:42:20,633 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=768, PETRI_PLACES=311, PETRI_TRANSITIONS=325} [2022-11-02 20:42:20,636 INFO L287 CegarLoopForPetriNet]: 315 programPoint places, -4 predicate places. [2022-11-02 20:42:20,637 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 325 transitions, 768 flow [2022-11-02 20:42:20,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:20,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:20,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:20,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:42:20,639 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:42:20,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:20,639 INFO L85 PathProgramCache]: Analyzing trace with hash -258579804, now seen corresponding path program 1 times [2022-11-02 20:42:20,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:20,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307277539] [2022-11-02 20:42:20,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:20,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:21,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:42:21,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:21,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307277539] [2022-11-02 20:42:21,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307277539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:21,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:21,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:42:21,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280707714] [2022-11-02 20:42:21,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:21,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:42:21,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:21,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:42:21,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:42:21,023 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 356 [2022-11-02 20:42:21,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 325 transitions, 768 flow. Second operand has 6 states, 6 states have (on average 275.3333333333333) internal successors, (1652), 6 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:21,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:21,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 356 [2022-11-02 20:42:21,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:22,212 INFO L130 PetriNetUnfolder]: 807/2922 cut-off events. [2022-11-02 20:42:22,213 INFO L131 PetriNetUnfolder]: For 1926/2115 co-relation queries the response was YES. [2022-11-02 20:42:22,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5136 conditions, 2922 events. 807/2922 cut-off events. For 1926/2115 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 18482 event pairs, 117 based on Foata normal form. 95/2492 useless extension candidates. Maximal degree in co-relation 5127. Up to 794 conditions per place. [2022-11-02 20:42:22,258 INFO L137 encePairwiseOnDemand]: 344/356 looper letters, 128 selfloop transitions, 11 changer transitions 0/383 dead transitions. [2022-11-02 20:42:22,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 383 transitions, 1194 flow [2022-11-02 20:42:22,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:42:22,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:42:22,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2539 transitions. [2022-11-02 20:42:22,264 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7924469413233458 [2022-11-02 20:42:22,264 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2539 transitions. [2022-11-02 20:42:22,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2539 transitions. [2022-11-02 20:42:22,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:22,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2539 transitions. [2022-11-02 20:42:22,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 282.1111111111111) internal successors, (2539), 9 states have internal predecessors, (2539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:22,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 356.0) internal successors, (3560), 10 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:22,279 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 356.0) internal successors, (3560), 10 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:22,280 INFO L175 Difference]: Start difference. First operand has 311 places, 325 transitions, 768 flow. Second operand 9 states and 2539 transitions. [2022-11-02 20:42:22,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 383 transitions, 1194 flow [2022-11-02 20:42:22,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 383 transitions, 1182 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:42:22,289 INFO L231 Difference]: Finished difference. Result has 319 places, 329 transitions, 802 flow [2022-11-02 20:42:22,290 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=802, PETRI_PLACES=319, PETRI_TRANSITIONS=329} [2022-11-02 20:42:22,291 INFO L287 CegarLoopForPetriNet]: 315 programPoint places, 4 predicate places. [2022-11-02 20:42:22,291 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 329 transitions, 802 flow [2022-11-02 20:42:22,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 275.3333333333333) internal successors, (1652), 6 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:22,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:22,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:22,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:42:22,293 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:42:22,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:22,293 INFO L85 PathProgramCache]: Analyzing trace with hash 368389638, now seen corresponding path program 1 times [2022-11-02 20:42:22,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:22,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652978211] [2022-11-02 20:42:22,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:22,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:22,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:22,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:42:22,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:22,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652978211] [2022-11-02 20:42:22,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652978211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:22,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:22,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:42:22,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631588055] [2022-11-02 20:42:22,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:22,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:42:22,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:22,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:42:22,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:42:22,414 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 356 [2022-11-02 20:42:22,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 329 transitions, 802 flow. Second operand has 3 states, 3 states have (on average 309.3333333333333) internal successors, (928), 3 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) [2022-11-02 20:42:22,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:22,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 356 [2022-11-02 20:42:22,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:23,073 INFO L130 PetriNetUnfolder]: 1134/2460 cut-off events. [2022-11-02 20:42:23,073 INFO L131 PetriNetUnfolder]: For 1970/2137 co-relation queries the response was YES. [2022-11-02 20:42:23,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5575 conditions, 2460 events. 1134/2460 cut-off events. For 1970/2137 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 10120 event pairs, 43 based on Foata normal form. 2/2251 useless extension candidates. Maximal degree in co-relation 5564. Up to 1047 conditions per place. [2022-11-02 20:42:23,126 INFO L137 encePairwiseOnDemand]: 351/356 looper letters, 48 selfloop transitions, 5 changer transitions 3/338 dead transitions. [2022-11-02 20:42:23,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 338 transitions, 936 flow [2022-11-02 20:42:23,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:42:23,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:42:23,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 962 transitions. [2022-11-02 20:42:23,129 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.900749063670412 [2022-11-02 20:42:23,134 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 962 transitions. [2022-11-02 20:42:23,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 962 transitions. [2022-11-02 20:42:23,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:23,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 962 transitions. [2022-11-02 20:42:23,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:23,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:23,141 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:23,141 INFO L175 Difference]: Start difference. First operand has 319 places, 329 transitions, 802 flow. Second operand 3 states and 962 transitions. [2022-11-02 20:42:23,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 338 transitions, 936 flow [2022-11-02 20:42:23,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 338 transitions, 927 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-02 20:42:23,151 INFO L231 Difference]: Finished difference. Result has 320 places, 323 transitions, 782 flow [2022-11-02 20:42:23,151 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=782, PETRI_PLACES=320, PETRI_TRANSITIONS=323} [2022-11-02 20:42:23,155 INFO L287 CegarLoopForPetriNet]: 315 programPoint places, 5 predicate places. [2022-11-02 20:42:23,155 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 323 transitions, 782 flow [2022-11-02 20:42:23,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.3333333333333) internal successors, (928), 3 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) [2022-11-02 20:42:23,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:23,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:23,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:42:23,157 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:42:23,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:23,158 INFO L85 PathProgramCache]: Analyzing trace with hash 687323963, now seen corresponding path program 1 times [2022-11-02 20:42:23,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:23,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471258975] [2022-11-02 20:42:23,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:23,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:25,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:25,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:25,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471258975] [2022-11-02 20:42:25,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471258975] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:42:25,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367983333] [2022-11-02 20:42:25,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:25,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:42:25,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db94f2-3136-428a-8185-b2f26a94ce05/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:42:25,568 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db94f2-3136-428a-8185-b2f26a94ce05/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:42:25,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db94f2-3136-428a-8185-b2f26a94ce05/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:42:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:25,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-02 20:42:25,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:42:25,973 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:42:26,035 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:42:26,036 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-02 20:42:26,122 INFO L356 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-02 20:42:26,122 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 22 [2022-11-02 20:42:27,148 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-02 20:42:27,148 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 25 [2022-11-02 20:42:27,522 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 20:42:30,248 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:42:30,404 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:42:30,532 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:42:30,673 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:42:30,939 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:30,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:42:34,163 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:42:34,164 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 56 [2022-11-02 20:42:34,182 INFO L356 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-11-02 20:42:34,183 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 798 treesize of output 773 [2022-11-02 20:42:34,205 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-02 20:42:34,206 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 766 treesize of output 574 [2022-11-02 20:42:34,223 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-02 20:42:34,223 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 574 treesize of output 526 [2022-11-02 20:42:34,240 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-02 20:42:34,241 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 526 treesize of output 430 [2022-11-02 20:42:34,264 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-02 20:42:34,264 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 226 treesize of output 202 [2022-11-02 20:42:35,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:35,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367983333] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:42:35,758 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:42:35,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 30, 25] total 65 [2022-11-02 20:42:35,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513517900] [2022-11-02 20:42:35,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:42:35,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-11-02 20:42:35,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:35,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-11-02 20:42:35,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=744, Invalid=3304, Unknown=112, NotChecked=0, Total=4160 [2022-11-02 20:42:35,776 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 356 [2022-11-02 20:42:35,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 323 transitions, 782 flow. Second operand has 65 states, 65 states have (on average 174.26153846153846) internal successors, (11327), 65 states have internal predecessors, (11327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:35,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:35,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 356 [2022-11-02 20:42:35,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:45,019 INFO L130 PetriNetUnfolder]: 5612/15048 cut-off events. [2022-11-02 20:42:45,019 INFO L131 PetriNetUnfolder]: For 11932/13124 co-relation queries the response was YES. [2022-11-02 20:42:45,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32490 conditions, 15048 events. 5612/15048 cut-off events. For 11932/13124 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 140070 event pairs, 32 based on Foata normal form. 48/13286 useless extension candidates. Maximal degree in co-relation 32478. Up to 3315 conditions per place. [2022-11-02 20:42:45,337 INFO L137 encePairwiseOnDemand]: 313/356 looper letters, 430 selfloop transitions, 97 changer transitions 16/706 dead transitions. [2022-11-02 20:42:45,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 706 transitions, 3199 flow [2022-11-02 20:42:45,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-02 20:42:45,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-11-02 20:42:45,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 8466 transitions. [2022-11-02 20:42:45,362 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5059765718383935 [2022-11-02 20:42:45,363 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 8466 transitions. [2022-11-02 20:42:45,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 8466 transitions. [2022-11-02 20:42:45,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:45,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 8466 transitions. [2022-11-02 20:42:45,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 180.12765957446808) internal successors, (8466), 47 states have internal predecessors, (8466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:45,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 356.0) internal successors, (17088), 48 states have internal predecessors, (17088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:45,427 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 356.0) internal successors, (17088), 48 states have internal predecessors, (17088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:45,427 INFO L175 Difference]: Start difference. First operand has 320 places, 323 transitions, 782 flow. Second operand 47 states and 8466 transitions. [2022-11-02 20:42:45,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 706 transitions, 3199 flow [2022-11-02 20:42:45,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 706 transitions, 3138 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 20:42:45,452 INFO L231 Difference]: Finished difference. Result has 382 places, 397 transitions, 1575 flow [2022-11-02 20:42:45,453 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=1575, PETRI_PLACES=382, PETRI_TRANSITIONS=397} [2022-11-02 20:42:45,454 INFO L287 CegarLoopForPetriNet]: 315 programPoint places, 67 predicate places. [2022-11-02 20:42:45,455 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 397 transitions, 1575 flow [2022-11-02 20:42:45,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 174.26153846153846) internal successors, (11327), 65 states have internal predecessors, (11327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:45,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:45,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:45,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db94f2-3136-428a-8185-b2f26a94ce05/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:42:45,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db94f2-3136-428a-8185-b2f26a94ce05/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:42:45,675 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 2 more)] === [2022-11-02 20:42:45,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:45,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1326678770, now seen corresponding path program 1 times [2022-11-02 20:42:45,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:45,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014789770] [2022-11-02 20:42:45,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:45,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:45,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:42:45,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:45,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014789770] [2022-11-02 20:42:45,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014789770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:45,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:45,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:42:45,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050571781] [2022-11-02 20:42:45,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:45,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:42:45,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:45,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:42:45,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:42:45,872 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 356 [2022-11-02 20:42:45,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 397 transitions, 1575 flow. Second operand has 3 states, 3 states have (on average 317.3333333333333) internal successors, (952), 3 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:45,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:45,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 356 [2022-11-02 20:42:45,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:51,459 INFO L130 PetriNetUnfolder]: 6815/17585 cut-off events. [2022-11-02 20:42:51,459 INFO L131 PetriNetUnfolder]: For 73117/76742 co-relation queries the response was YES. [2022-11-02 20:42:51,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53686 conditions, 17585 events. 6815/17585 cut-off events. For 73117/76742 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 172850 event pairs, 888 based on Foata normal form. 81/15150 useless extension candidates. Maximal degree in co-relation 53652. Up to 4839 conditions per place. [2022-11-02 20:42:51,926 INFO L137 encePairwiseOnDemand]: 351/356 looper letters, 122 selfloop transitions, 10 changer transitions 0/434 dead transitions. [2022-11-02 20:42:51,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 434 transitions, 2148 flow [2022-11-02 20:42:51,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:42:51,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:42:51,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 981 transitions. [2022-11-02 20:42:51,930 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9185393258426966 [2022-11-02 20:42:51,930 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 981 transitions. [2022-11-02 20:42:51,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 981 transitions. [2022-11-02 20:42:51,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:51,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 981 transitions. [2022-11-02 20:42:51,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:51,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:51,938 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:51,938 INFO L175 Difference]: Start difference. First operand has 382 places, 397 transitions, 1575 flow. Second operand 3 states and 981 transitions. [2022-11-02 20:42:51,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 434 transitions, 2148 flow [2022-11-02 20:42:52,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 434 transitions, 2011 flow, removed 47 selfloop flow, removed 24 redundant places. [2022-11-02 20:42:52,246 INFO L231 Difference]: Finished difference. Result has 356 places, 392 transitions, 1457 flow [2022-11-02 20:42:52,248 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1411, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1457, PETRI_PLACES=356, PETRI_TRANSITIONS=392} [2022-11-02 20:42:52,249 INFO L287 CegarLoopForPetriNet]: 315 programPoint places, 41 predicate places. [2022-11-02 20:42:52,249 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 392 transitions, 1457 flow [2022-11-02 20:42:52,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.3333333333333) internal successors, (952), 3 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:52,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:52,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:52,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:42:52,251 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 2 more)] === [2022-11-02 20:42:52,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:52,252 INFO L85 PathProgramCache]: Analyzing trace with hash -2072877551, now seen corresponding path program 1 times [2022-11-02 20:42:52,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:52,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654581180] [2022-11-02 20:42:52,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:52,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:52,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:42:52,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:52,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654581180] [2022-11-02 20:42:52,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654581180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:52,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:52,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:42:52,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672086120] [2022-11-02 20:42:52,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:52,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:42:52,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:52,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:42:52,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:42:52,429 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 356 [2022-11-02 20:42:52,430 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 392 transitions, 1457 flow. Second operand has 3 states, 3 states have (on average 317.3333333333333) internal successors, (952), 3 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:52,431 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:52,431 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 356 [2022-11-02 20:42:52,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:58,865 INFO L130 PetriNetUnfolder]: 8310/22815 cut-off events. [2022-11-02 20:42:58,865 INFO L131 PetriNetUnfolder]: For 98067/103543 co-relation queries the response was YES. [2022-11-02 20:42:59,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67158 conditions, 22815 events. 8310/22815 cut-off events. For 98067/103543 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 250096 event pairs, 1355 based on Foata normal form. 40/19886 useless extension candidates. Maximal degree in co-relation 67129. Up to 5966 conditions per place. [2022-11-02 20:42:59,291 INFO L137 encePairwiseOnDemand]: 351/356 looper letters, 113 selfloop transitions, 10 changer transitions 0/425 dead transitions. [2022-11-02 20:42:59,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 425 transitions, 1995 flow [2022-11-02 20:42:59,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:42:59,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:42:59,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 980 transitions. [2022-11-02 20:42:59,294 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9176029962546817 [2022-11-02 20:42:59,294 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 980 transitions. [2022-11-02 20:42:59,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 980 transitions. [2022-11-02 20:42:59,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:59,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 980 transitions. [2022-11-02 20:42:59,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:59,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:59,300 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:59,300 INFO L175 Difference]: Start difference. First operand has 356 places, 392 transitions, 1457 flow. Second operand 3 states and 980 transitions. [2022-11-02 20:42:59,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 425 transitions, 1995 flow [2022-11-02 20:42:59,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 425 transitions, 1927 flow, removed 18 selfloop flow, removed 2 redundant places. [2022-11-02 20:42:59,534 INFO L231 Difference]: Finished difference. Result has 358 places, 384 transitions, 1392 flow [2022-11-02 20:42:59,535 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1346, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1392, PETRI_PLACES=358, PETRI_TRANSITIONS=384} [2022-11-02 20:42:59,536 INFO L287 CegarLoopForPetriNet]: 315 programPoint places, 43 predicate places. [2022-11-02 20:42:59,536 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 384 transitions, 1392 flow [2022-11-02 20:42:59,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.3333333333333) internal successors, (952), 3 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:59,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:59,537 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:59,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:42:59,538 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 2 more)] === [2022-11-02 20:42:59,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:59,538 INFO L85 PathProgramCache]: Analyzing trace with hash -677372552, now seen corresponding path program 1 times [2022-11-02 20:42:59,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:59,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585015821] [2022-11-02 20:42:59,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:59,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:00,109 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:43:00,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:00,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585015821] [2022-11-02 20:43:00,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585015821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:00,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:00,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:43:00,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113351114] [2022-11-02 20:43:00,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:00,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:43:00,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:00,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:43:00,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:43:00,115 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 356 [2022-11-02 20:43:00,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 384 transitions, 1392 flow. Second operand has 4 states, 4 states have (on average 315.25) internal successors, (1261), 4 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:00,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:43:00,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 356 [2022-11-02 20:43:00,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:43:04,097 INFO L130 PetriNetUnfolder]: 4022/14534 cut-off events. [2022-11-02 20:43:04,098 INFO L131 PetriNetUnfolder]: For 69816/72141 co-relation queries the response was YES. [2022-11-02 20:43:04,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41563 conditions, 14534 events. 4022/14534 cut-off events. For 69816/72141 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 159001 event pairs, 470 based on Foata normal form. 267/13217 useless extension candidates. Maximal degree in co-relation 41533. Up to 3900 conditions per place. [2022-11-02 20:43:04,512 INFO L137 encePairwiseOnDemand]: 349/356 looper letters, 121 selfloop transitions, 6 changer transitions 0/428 dead transitions. [2022-11-02 20:43:04,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 428 transitions, 2038 flow [2022-11-02 20:43:04,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:43:04,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 20:43:04,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1287 transitions. [2022-11-02 20:43:04,516 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9037921348314607 [2022-11-02 20:43:04,516 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1287 transitions. [2022-11-02 20:43:04,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1287 transitions. [2022-11-02 20:43:04,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:43:04,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1287 transitions. [2022-11-02 20:43:04,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 321.75) internal successors, (1287), 4 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:04,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 356.0) internal successors, (1780), 5 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:04,535 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 356.0) internal successors, (1780), 5 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:04,535 INFO L175 Difference]: Start difference. First operand has 358 places, 384 transitions, 1392 flow. Second operand 4 states and 1287 transitions. [2022-11-02 20:43:04,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 428 transitions, 2038 flow [2022-11-02 20:43:04,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 428 transitions, 1990 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-11-02 20:43:04,622 INFO L231 Difference]: Finished difference. Result has 358 places, 380 transitions, 1350 flow [2022-11-02 20:43:04,622 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1350, PETRI_PLACES=358, PETRI_TRANSITIONS=380} [2022-11-02 20:43:04,623 INFO L287 CegarLoopForPetriNet]: 315 programPoint places, 43 predicate places. [2022-11-02 20:43:04,624 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 380 transitions, 1350 flow [2022-11-02 20:43:04,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 315.25) internal successors, (1261), 4 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:04,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:43:04,625 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:04,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:43:04,625 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 2 more)] === [2022-11-02 20:43:04,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:04,626 INFO L85 PathProgramCache]: Analyzing trace with hash -389190258, now seen corresponding path program 2 times [2022-11-02 20:43:04,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:04,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019343418] [2022-11-02 20:43:04,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:04,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:04,729 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:43:04,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:04,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019343418] [2022-11-02 20:43:04,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019343418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:04,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:04,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:43:04,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406430102] [2022-11-02 20:43:04,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:04,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:43:04,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:04,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:43:04,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:43:04,733 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 356 [2022-11-02 20:43:04,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 380 transitions, 1350 flow. Second operand has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:04,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:43:04,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 356 [2022-11-02 20:43:04,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:43:10,740 INFO L130 PetriNetUnfolder]: 8922/22003 cut-off events. [2022-11-02 20:43:10,741 INFO L131 PetriNetUnfolder]: For 145084/149212 co-relation queries the response was YES. [2022-11-02 20:43:10,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80764 conditions, 22003 events. 8922/22003 cut-off events. For 145084/149212 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 215504 event pairs, 948 based on Foata normal form. 18/19543 useless extension candidates. Maximal degree in co-relation 80734. Up to 8652 conditions per place. [2022-11-02 20:43:11,159 INFO L137 encePairwiseOnDemand]: 351/356 looper letters, 100 selfloop transitions, 15 changer transitions 0/409 dead transitions. [2022-11-02 20:43:11,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 409 transitions, 1834 flow [2022-11-02 20:43:11,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:43:11,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:43:11,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 962 transitions. [2022-11-02 20:43:11,163 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.900749063670412 [2022-11-02 20:43:11,163 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 962 transitions. [2022-11-02 20:43:11,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 962 transitions. [2022-11-02 20:43:11,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:43:11,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 962 transitions. [2022-11-02 20:43:11,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:11,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:11,168 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:11,168 INFO L175 Difference]: Start difference. First operand has 358 places, 380 transitions, 1350 flow. Second operand 3 states and 962 transitions. [2022-11-02 20:43:11,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 409 transitions, 1834 flow [2022-11-02 20:43:11,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 409 transitions, 1824 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:43:11,533 INFO L231 Difference]: Finished difference. Result has 360 places, 381 transitions, 1408 flow [2022-11-02 20:43:11,534 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1340, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1408, PETRI_PLACES=360, PETRI_TRANSITIONS=381} [2022-11-02 20:43:11,534 INFO L287 CegarLoopForPetriNet]: 315 programPoint places, 45 predicate places. [2022-11-02 20:43:11,535 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 381 transitions, 1408 flow [2022-11-02 20:43:11,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:11,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:43:11,538 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:11,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:43:11,539 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:43:11,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:11,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1485571381, now seen corresponding path program 1 times [2022-11-02 20:43:11,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:11,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864080052] [2022-11-02 20:43:11,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:11,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:11,686 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:43:11,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:11,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864080052] [2022-11-02 20:43:11,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864080052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:11,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:11,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:43:11,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495068372] [2022-11-02 20:43:11,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:11,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:43:11,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:11,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:43:11,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:43:11,691 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 356 [2022-11-02 20:43:11,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 381 transitions, 1408 flow. Second operand has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:11,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:43:11,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 356 [2022-11-02 20:43:11,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:43:17,710 INFO L130 PetriNetUnfolder]: 8205/19479 cut-off events. [2022-11-02 20:43:17,710 INFO L131 PetriNetUnfolder]: For 142792/146714 co-relation queries the response was YES. [2022-11-02 20:43:18,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75065 conditions, 19479 events. 8205/19479 cut-off events. For 142792/146714 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 178392 event pairs, 957 based on Foata normal form. 161/17920 useless extension candidates. Maximal degree in co-relation 75034. Up to 7754 conditions per place. [2022-11-02 20:43:18,472 INFO L137 encePairwiseOnDemand]: 350/356 looper letters, 112 selfloop transitions, 5 changer transitions 0/411 dead transitions. [2022-11-02 20:43:18,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 411 transitions, 1900 flow [2022-11-02 20:43:18,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:43:18,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:43:18,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 964 transitions. [2022-11-02 20:43:18,476 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9026217228464419 [2022-11-02 20:43:18,477 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 964 transitions. [2022-11-02 20:43:18,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 964 transitions. [2022-11-02 20:43:18,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:43:18,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 964 transitions. [2022-11-02 20:43:18,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 321.3333333333333) internal successors, (964), 3 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:18,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:18,485 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:18,485 INFO L175 Difference]: Start difference. First operand has 360 places, 381 transitions, 1408 flow. Second operand 3 states and 964 transitions. [2022-11-02 20:43:18,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 411 transitions, 1900 flow [2022-11-02 20:43:18,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 411 transitions, 1870 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:43:18,652 INFO L231 Difference]: Finished difference. Result has 362 places, 382 transitions, 1408 flow [2022-11-02 20:43:18,653 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1378, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1408, PETRI_PLACES=362, PETRI_TRANSITIONS=382} [2022-11-02 20:43:18,653 INFO L287 CegarLoopForPetriNet]: 315 programPoint places, 47 predicate places. [2022-11-02 20:43:18,654 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 382 transitions, 1408 flow [2022-11-02 20:43:18,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:18,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:43:18,654 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:18,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:43:18,655 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:43:18,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:18,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1814245, now seen corresponding path program 1 times [2022-11-02 20:43:18,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:18,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356188478] [2022-11-02 20:43:18,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:18,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:19,005 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:43:19,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:19,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356188478] [2022-11-02 20:43:19,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356188478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:19,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:19,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:43:19,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020089094] [2022-11-02 20:43:19,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:19,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:43:19,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:19,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:43:19,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:43:19,015 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 356 [2022-11-02 20:43:19,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 382 transitions, 1408 flow. Second operand has 6 states, 6 states have (on average 276.3333333333333) internal successors, (1658), 6 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:19,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:43:19,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 356 [2022-11-02 20:43:19,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:43:23,335 INFO L130 PetriNetUnfolder]: 4010/14520 cut-off events. [2022-11-02 20:43:23,335 INFO L131 PetriNetUnfolder]: For 59014/61119 co-relation queries the response was YES. [2022-11-02 20:43:23,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41822 conditions, 14520 events. 4010/14520 cut-off events. For 59014/61119 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 153201 event pairs, 618 based on Foata normal form. 7/12933 useless extension candidates. Maximal degree in co-relation 41790. Up to 4856 conditions per place. [2022-11-02 20:43:23,554 INFO L137 encePairwiseOnDemand]: 346/356 looper letters, 124 selfloop transitions, 8 changer transitions 29/415 dead transitions. [2022-11-02 20:43:23,554 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 415 transitions, 1874 flow [2022-11-02 20:43:23,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:43:23,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:43:23,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2510 transitions. [2022-11-02 20:43:23,561 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7833957553058677 [2022-11-02 20:43:23,562 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2510 transitions. [2022-11-02 20:43:23,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2510 transitions. [2022-11-02 20:43:23,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:43:23,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2510 transitions. [2022-11-02 20:43:23,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 278.8888888888889) internal successors, (2510), 9 states have internal predecessors, (2510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:23,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 356.0) internal successors, (3560), 10 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:23,577 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 356.0) internal successors, (3560), 10 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:23,577 INFO L175 Difference]: Start difference. First operand has 362 places, 382 transitions, 1408 flow. Second operand 9 states and 2510 transitions. [2022-11-02 20:43:23,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 415 transitions, 1874 flow [2022-11-02 20:43:23,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 415 transitions, 1864 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:43:23,653 INFO L231 Difference]: Finished difference. Result has 370 places, 383 transitions, 1426 flow [2022-11-02 20:43:23,654 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1398, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1426, PETRI_PLACES=370, PETRI_TRANSITIONS=383} [2022-11-02 20:43:23,654 INFO L287 CegarLoopForPetriNet]: 315 programPoint places, 55 predicate places. [2022-11-02 20:43:23,654 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 383 transitions, 1426 flow [2022-11-02 20:43:23,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.3333333333333) internal successors, (1658), 6 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:23,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:43:23,656 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:23,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:43:23,656 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:43:23,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:23,657 INFO L85 PathProgramCache]: Analyzing trace with hash -42145078, now seen corresponding path program 1 times [2022-11-02 20:43:23,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:23,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536240783] [2022-11-02 20:43:23,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:23,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:25,945 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:43:25,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:25,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536240783] [2022-11-02 20:43:25,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536240783] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:43:25,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845076574] [2022-11-02 20:43:25,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:25,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:25,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db94f2-3136-428a-8185-b2f26a94ce05/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:25,948 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db94f2-3136-428a-8185-b2f26a94ce05/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:43:25,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db94f2-3136-428a-8185-b2f26a94ce05/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:43:26,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:26,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-02 20:43:26,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:27,975 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:43:27,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:43:28,153 INFO L356 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-11-02 20:43:28,153 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-11-02 20:43:29,623 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:43:29,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845076574] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:43:29,624 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:43:29,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 13] total 40 [2022-11-02 20:43:29,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503893661] [2022-11-02 20:43:29,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:43:29,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-02 20:43:29,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:29,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-02 20:43:29,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=1301, Unknown=0, NotChecked=0, Total=1560 [2022-11-02 20:43:29,640 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 356 [2022-11-02 20:43:29,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 383 transitions, 1426 flow. Second operand has 40 states, 40 states have (on average 178.75) internal successors, (7150), 40 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:29,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:43:29,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 356 [2022-11-02 20:43:29,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand