./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8 --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 b869eaba59e8dca8d7cb2d1135193e506b8377811cada7a7f67b6d0824dd2d3d --- 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-e04fb08 [2022-11-16 12:09:25,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:09:25,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:09:25,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:09:25,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:09:25,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:09:25,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:09:25,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:09:25,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:09:25,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:09:25,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:09:25,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:09:25,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:09:25,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:09:25,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:09:25,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:09:25,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:09:25,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:09:25,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:09:25,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:09:25,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:09:25,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:09:25,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:09:25,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:09:25,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:09:25,749 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:09:25,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:09:25,750 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:09:25,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:09:25,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:09:25,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:09:25,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:09:25,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:09:25,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:09:25,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:09:25,754 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:09:25,755 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:09:25,755 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:09:25,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:09:25,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:09:25,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:09:25,760 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:09:25,797 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:09:25,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:09:25,798 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:09:25,798 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:09:25,800 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:09:25,800 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:09:25,801 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:09:25,801 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:09:25,801 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:09:25,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:09:25,802 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:09:25,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:09:25,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:09:25,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:09:25,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:09:25,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:09:25,803 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:09:25,804 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:09:25,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:09:25,804 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:09:25,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:09:25,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:09:25,811 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:09:25,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:09:25,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:09:25,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:09:25,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:09:25,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:09:25,813 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:09:25,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:09:25,813 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:09:25,813 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:09:25,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:09:25,814 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_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b869eaba59e8dca8d7cb2d1135193e506b8377811cada7a7f67b6d0824dd2d3d [2022-11-16 12:09:26,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:09:26,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:09:26,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:09:26,106 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:09:26,108 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:09:26,109 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2022-11-16 12:09:26,184 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/data/b96f32e50/9ccdbf564d8e4be7b0194fc31a2efc02/FLAG43e9956ef [2022-11-16 12:09:26,630 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:09:26,631 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2022-11-16 12:09:26,643 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/data/b96f32e50/9ccdbf564d8e4be7b0194fc31a2efc02/FLAG43e9956ef [2022-11-16 12:09:26,991 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/data/b96f32e50/9ccdbf564d8e4be7b0194fc31a2efc02 [2022-11-16 12:09:26,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:09:26,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:09:26,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:09:26,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:09:27,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:09:27,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:09:26" (1/1) ... [2022-11-16 12:09:27,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@437fab64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:27, skipping insertion in model container [2022-11-16 12:09:27,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:09:26" (1/1) ... [2022-11-16 12:09:27,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:09:27,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:09:27,352 WARN L229 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_fa079f53-392a-4f19-9128-38768686efad/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c[4929,4942] [2022-11-16 12:09:27,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:09:27,381 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:09:27,445 WARN L229 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_fa079f53-392a-4f19-9128-38768686efad/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c[4929,4942] [2022-11-16 12:09:27,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:09:27,479 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:09:27,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:27 WrapperNode [2022-11-16 12:09:27,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:09:27,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:09:27,482 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:09:27,482 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:09:27,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:27" (1/1) ... [2022-11-16 12:09:27,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:27" (1/1) ... [2022-11-16 12:09:27,555 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 21, calls inlined = 29, statements flattened = 388 [2022-11-16 12:09:27,555 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:09:27,556 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:09:27,556 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:09:27,556 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:09:27,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:27" (1/1) ... [2022-11-16 12:09:27,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:27" (1/1) ... [2022-11-16 12:09:27,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:27" (1/1) ... [2022-11-16 12:09:27,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:27" (1/1) ... [2022-11-16 12:09:27,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:27" (1/1) ... [2022-11-16 12:09:27,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:27" (1/1) ... [2022-11-16 12:09:27,596 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:27" (1/1) ... [2022-11-16 12:09:27,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:27" (1/1) ... [2022-11-16 12:09:27,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:09:27,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:09:27,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:09:27,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:09:27,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:27" (1/1) ... [2022-11-16 12:09:27,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:09:27,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:27,656 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:09:27,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:09:27,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:09:27,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:09:27,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:09:27,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:09:27,709 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:09:27,709 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:09:27,709 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:09:27,710 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:09:27,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:09:27,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:09:27,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:09:27,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:09:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:09:27,713 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:09:27,918 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:09:27,920 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:09:28,542 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:09:28,558 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:09:28,559 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 12:09:28,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:09:28 BoogieIcfgContainer [2022-11-16 12:09:28,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:09:28,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:09:28,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:09:28,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:09:28,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:09:26" (1/3) ... [2022-11-16 12:09:28,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a9295d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:09:28, skipping insertion in model container [2022-11-16 12:09:28,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:27" (2/3) ... [2022-11-16 12:09:28,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a9295d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:09:28, skipping insertion in model container [2022-11-16 12:09:28,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:09:28" (3/3) ... [2022-11-16 12:09:28,571 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-symm.wvr.c [2022-11-16 12:09:28,588 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:09:28,599 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:09:28,599 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:09:28,599 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:09:28,861 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:09:28,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 474 places, 516 transitions, 1048 flow [2022-11-16 12:09:29,200 INFO L130 PetriNetUnfolder]: 49/514 cut-off events. [2022-11-16 12:09:29,201 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:09:29,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 523 conditions, 514 events. 49/514 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1536 event pairs, 0 based on Foata normal form. 0/464 useless extension candidates. Maximal degree in co-relation 353. Up to 2 conditions per place. [2022-11-16 12:09:29,221 INFO L82 GeneralOperation]: Start removeDead. Operand has 474 places, 516 transitions, 1048 flow [2022-11-16 12:09:29,238 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 463 places, 505 transitions, 1022 flow [2022-11-16 12:09:29,256 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:09:29,270 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;@16c8f950, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:09:29,270 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-16 12:09:29,407 INFO L130 PetriNetUnfolder]: 46/491 cut-off events. [2022-11-16 12:09:29,407 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:09:29,408 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:29,410 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:29,410 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:09:29,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:29,417 INFO L85 PathProgramCache]: Analyzing trace with hash -676823716, now seen corresponding path program 1 times [2022-11-16 12:09:29,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:29,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064316004] [2022-11-16 12:09:29,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:29,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:29,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:29,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:29,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064316004] [2022-11-16 12:09:29,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064316004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:29,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:29,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:09:29,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432634424] [2022-11-16 12:09:29,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:29,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:09:29,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:29,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:09:29,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:09:29,880 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 486 out of 516 [2022-11-16 12:09:29,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 505 transitions, 1022 flow. Second operand has 2 states, 2 states have (on average 489.0) internal successors, (978), 2 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) [2022-11-16 12:09:29,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:29,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 486 of 516 [2022-11-16 12:09:29,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:30,056 INFO L130 PetriNetUnfolder]: 24/480 cut-off events. [2022-11-16 12:09:30,056 INFO L131 PetriNetUnfolder]: For 9/10 co-relation queries the response was YES. [2022-11-16 12:09:30,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 480 events. 24/480 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1479 event pairs, 0 based on Foata normal form. 30/465 useless extension candidates. Maximal degree in co-relation 336. Up to 5 conditions per place. [2022-11-16 12:09:30,065 INFO L137 encePairwiseOnDemand]: 491/516 looper letters, 4 selfloop transitions, 0 changer transitions 5/480 dead transitions. [2022-11-16 12:09:30,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 480 transitions, 980 flow [2022-11-16 12:09:30,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:09:30,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 12:09:30,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1001 transitions. [2022-11-16 12:09:30,091 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9699612403100775 [2022-11-16 12:09:30,092 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1001 transitions. [2022-11-16 12:09:30,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1001 transitions. [2022-11-16 12:09:30,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:30,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1001 transitions. [2022-11-16 12:09:30,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 500.5) internal successors, (1001), 2 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:30,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 516.0) internal successors, (1548), 3 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:30,119 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 516.0) internal successors, (1548), 3 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:30,121 INFO L175 Difference]: Start difference. First operand has 463 places, 505 transitions, 1022 flow. Second operand 2 states and 1001 transitions. [2022-11-16 12:09:30,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 480 transitions, 980 flow [2022-11-16 12:09:30,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 480 transitions, 972 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:09:30,146 INFO L231 Difference]: Finished difference. Result has 460 places, 475 transitions, 954 flow [2022-11-16 12:09:30,149 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=954, PETRI_PLACES=460, PETRI_TRANSITIONS=475} [2022-11-16 12:09:30,157 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, -3 predicate places. [2022-11-16 12:09:30,157 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 475 transitions, 954 flow [2022-11-16 12:09:30,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 489.0) internal successors, (978), 2 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) [2022-11-16 12:09:30,159 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:30,160 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:30,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:09:30,161 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:09:30,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:30,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1948814404, now seen corresponding path program 1 times [2022-11-16 12:09:30,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:30,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750668193] [2022-11-16 12:09:30,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:30,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:30,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:30,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:30,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750668193] [2022-11-16 12:09:30,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750668193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:30,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:30,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:09:30,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378683201] [2022-11-16 12:09:30,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:30,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:09:30,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:30,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:09:30,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:09:30,434 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 472 out of 516 [2022-11-16 12:09:30,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 475 transitions, 954 flow. Second operand has 3 states, 3 states have (on average 475.3333333333333) internal successors, (1426), 3 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:30,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:30,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 472 of 516 [2022-11-16 12:09:30,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:30,866 INFO L130 PetriNetUnfolder]: 127/1661 cut-off events. [2022-11-16 12:09:30,866 INFO L131 PetriNetUnfolder]: For 19/21 co-relation queries the response was YES. [2022-11-16 12:09:30,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1800 conditions, 1661 events. 127/1661 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12674 event pairs, 36 based on Foata normal form. 1/1496 useless extension candidates. Maximal degree in co-relation 1797. Up to 88 conditions per place. [2022-11-16 12:09:30,878 INFO L137 encePairwiseOnDemand]: 512/516 looper letters, 29 selfloop transitions, 2 changer transitions 0/488 dead transitions. [2022-11-16 12:09:30,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 488 transitions, 1045 flow [2022-11-16 12:09:30,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:09:30,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:09:30,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1449 transitions. [2022-11-16 12:09:30,884 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.936046511627907 [2022-11-16 12:09:30,884 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1449 transitions. [2022-11-16 12:09:30,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1449 transitions. [2022-11-16 12:09:30,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:30,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1449 transitions. [2022-11-16 12:09:30,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 483.0) internal successors, (1449), 3 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:30,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:30,896 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:30,897 INFO L175 Difference]: Start difference. First operand has 460 places, 475 transitions, 954 flow. Second operand 3 states and 1449 transitions. [2022-11-16 12:09:30,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 488 transitions, 1045 flow [2022-11-16 12:09:30,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 488 transitions, 1045 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:09:30,909 INFO L231 Difference]: Finished difference. Result has 459 places, 477 transitions, 974 flow [2022-11-16 12:09:30,910 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=974, PETRI_PLACES=459, PETRI_TRANSITIONS=477} [2022-11-16 12:09:30,911 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, -4 predicate places. [2022-11-16 12:09:30,911 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 477 transitions, 974 flow [2022-11-16 12:09:30,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 475.3333333333333) internal successors, (1426), 3 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:30,912 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:30,913 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:30,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:09:30,914 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:09:30,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:30,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1231189308, now seen corresponding path program 2 times [2022-11-16 12:09:30,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:30,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506604352] [2022-11-16 12:09:30,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:30,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:31,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:31,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:31,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506604352] [2022-11-16 12:09:31,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506604352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:31,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:31,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:09:31,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912683880] [2022-11-16 12:09:31,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:31,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:09:31,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:31,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:09:31,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:09:31,092 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 472 out of 516 [2022-11-16 12:09:31,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 477 transitions, 974 flow. Second operand has 3 states, 3 states have (on average 475.3333333333333) internal successors, (1426), 3 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:31,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:31,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 472 of 516 [2022-11-16 12:09:31,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:31,453 INFO L130 PetriNetUnfolder]: 120/1621 cut-off events. [2022-11-16 12:09:31,453 INFO L131 PetriNetUnfolder]: For 75/80 co-relation queries the response was YES. [2022-11-16 12:09:31,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1814 conditions, 1621 events. 120/1621 cut-off events. For 75/80 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 12382 event pairs, 39 based on Foata normal form. 4/1497 useless extension candidates. Maximal degree in co-relation 1809. Up to 100 conditions per place. [2022-11-16 12:09:31,467 INFO L137 encePairwiseOnDemand]: 510/516 looper letters, 29 selfloop transitions, 4 changer transitions 0/490 dead transitions. [2022-11-16 12:09:31,467 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 490 transitions, 1073 flow [2022-11-16 12:09:31,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:09:31,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:09:31,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1449 transitions. [2022-11-16 12:09:31,472 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.936046511627907 [2022-11-16 12:09:31,473 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1449 transitions. [2022-11-16 12:09:31,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1449 transitions. [2022-11-16 12:09:31,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:31,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1449 transitions. [2022-11-16 12:09:31,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 483.0) internal successors, (1449), 3 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:31,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:31,483 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:31,483 INFO L175 Difference]: Start difference. First operand has 459 places, 477 transitions, 974 flow. Second operand 3 states and 1449 transitions. [2022-11-16 12:09:31,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 490 transitions, 1073 flow [2022-11-16 12:09:31,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 490 transitions, 1071 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:09:31,495 INFO L231 Difference]: Finished difference. Result has 462 places, 479 transitions, 1004 flow [2022-11-16 12:09:31,496 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1004, PETRI_PLACES=462, PETRI_TRANSITIONS=479} [2022-11-16 12:09:31,499 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, -1 predicate places. [2022-11-16 12:09:31,500 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 479 transitions, 1004 flow [2022-11-16 12:09:31,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 475.3333333333333) internal successors, (1426), 3 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:31,501 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:31,501 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:31,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:09:31,502 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:09:31,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:31,503 INFO L85 PathProgramCache]: Analyzing trace with hash 311550952, now seen corresponding path program 1 times [2022-11-16 12:09:31,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:31,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064008264] [2022-11-16 12:09:31,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:31,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:31,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:31,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:31,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064008264] [2022-11-16 12:09:31,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064008264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:31,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:31,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:09:31,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213028431] [2022-11-16 12:09:31,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:31,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:09:31,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:31,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:09:31,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:09:31,832 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 464 out of 516 [2022-11-16 12:09:31,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 479 transitions, 1004 flow. Second operand has 5 states, 5 states have (on average 467.6) internal successors, (2338), 5 states have internal predecessors, (2338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:31,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:31,836 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 464 of 516 [2022-11-16 12:09:31,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:32,055 INFO L130 PetriNetUnfolder]: 26/558 cut-off events. [2022-11-16 12:09:32,056 INFO L131 PetriNetUnfolder]: For 21/37 co-relation queries the response was YES. [2022-11-16 12:09:32,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 558 events. 26/558 cut-off events. For 21/37 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2130 event pairs, 0 based on Foata normal form. 0/519 useless extension candidates. Maximal degree in co-relation 624. Up to 31 conditions per place. [2022-11-16 12:09:32,063 INFO L137 encePairwiseOnDemand]: 506/516 looper letters, 26 selfloop transitions, 8 changer transitions 0/487 dead transitions. [2022-11-16 12:09:32,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 487 transitions, 1088 flow [2022-11-16 12:09:32,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:09:32,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:09:32,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2356 transitions. [2022-11-16 12:09:32,070 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9131782945736434 [2022-11-16 12:09:32,070 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2356 transitions. [2022-11-16 12:09:32,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2356 transitions. [2022-11-16 12:09:32,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:32,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2356 transitions. [2022-11-16 12:09:32,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 471.2) internal successors, (2356), 5 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:32,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 516.0) internal successors, (3096), 6 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:32,101 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 516.0) internal successors, (3096), 6 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:32,101 INFO L175 Difference]: Start difference. First operand has 462 places, 479 transitions, 1004 flow. Second operand 5 states and 2356 transitions. [2022-11-16 12:09:32,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 487 transitions, 1088 flow [2022-11-16 12:09:32,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 487 transitions, 1076 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-16 12:09:32,112 INFO L231 Difference]: Finished difference. Result has 465 places, 481 transitions, 1024 flow [2022-11-16 12:09:32,113 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1024, PETRI_PLACES=465, PETRI_TRANSITIONS=481} [2022-11-16 12:09:32,114 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 2 predicate places. [2022-11-16 12:09:32,115 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 481 transitions, 1024 flow [2022-11-16 12:09:32,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 467.6) internal successors, (2338), 5 states have internal predecessors, (2338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:32,116 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:32,117 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:32,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:09:32,117 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:09:32,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:32,118 INFO L85 PathProgramCache]: Analyzing trace with hash 625696930, now seen corresponding path program 1 times [2022-11-16 12:09:32,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:32,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802723682] [2022-11-16 12:09:32,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:32,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:32,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:09:32,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:32,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802723682] [2022-11-16 12:09:32,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802723682] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:32,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327686503] [2022-11-16 12:09:32,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:32,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:32,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:32,398 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:32,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:09:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:32,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:09:32,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:32,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:09:32,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:32,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:09:32,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327686503] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:09:32,911 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:09:32,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-16 12:09:32,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385191270] [2022-11-16 12:09:32,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:09:32,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:09:32,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:32,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:09:32,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:09:32,924 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 462 out of 516 [2022-11-16 12:09:32,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 481 transitions, 1024 flow. Second operand has 15 states, 15 states have (on average 465.1333333333333) internal successors, (6977), 15 states have internal predecessors, (6977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:32,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:32,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 462 of 516 [2022-11-16 12:09:32,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:33,350 INFO L130 PetriNetUnfolder]: 26/574 cut-off events. [2022-11-16 12:09:33,350 INFO L131 PetriNetUnfolder]: For 22/37 co-relation queries the response was YES. [2022-11-16 12:09:33,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673 conditions, 574 events. 26/574 cut-off events. For 22/37 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2116 event pairs, 0 based on Foata normal form. 4/541 useless extension candidates. Maximal degree in co-relation 666. Up to 25 conditions per place. [2022-11-16 12:09:33,358 INFO L137 encePairwiseOnDemand]: 500/516 looper letters, 28 selfloop transitions, 22 changer transitions 0/501 dead transitions. [2022-11-16 12:09:33,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 501 transitions, 1168 flow [2022-11-16 12:09:33,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:09:33,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:09:33,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 5136 transitions. [2022-11-16 12:09:33,369 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.904862579281184 [2022-11-16 12:09:33,369 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 5136 transitions. [2022-11-16 12:09:33,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 5136 transitions. [2022-11-16 12:09:33,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:33,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 5136 transitions. [2022-11-16 12:09:33,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 466.90909090909093) internal successors, (5136), 11 states have internal predecessors, (5136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:33,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 516.0) internal successors, (6192), 12 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:33,399 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 516.0) internal successors, (6192), 12 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:33,399 INFO L175 Difference]: Start difference. First operand has 465 places, 481 transitions, 1024 flow. Second operand 11 states and 5136 transitions. [2022-11-16 12:09:33,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 501 transitions, 1168 flow [2022-11-16 12:09:33,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 501 transitions, 1156 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:09:33,410 INFO L231 Difference]: Finished difference. Result has 475 places, 493 transitions, 1123 flow [2022-11-16 12:09:33,411 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1123, PETRI_PLACES=475, PETRI_TRANSITIONS=493} [2022-11-16 12:09:33,414 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 12 predicate places. [2022-11-16 12:09:33,415 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 493 transitions, 1123 flow [2022-11-16 12:09:33,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 465.1333333333333) internal successors, (6977), 15 states have internal predecessors, (6977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:33,436 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:33,436 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:33,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:33,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:33,642 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:09:33,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:33,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1100582878, now seen corresponding path program 2 times [2022-11-16 12:09:33,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:33,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394906738] [2022-11-16 12:09:33,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:33,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:33,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:34,063 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-16 12:09:34,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:34,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394906738] [2022-11-16 12:09:34,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394906738] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:34,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914627689] [2022-11-16 12:09:34,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:09:34,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:34,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:34,066 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:34,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:09:34,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:09:34,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:09:34,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:09:34,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:34,460 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-16 12:09:34,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:09:34,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914627689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:34,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:09:34,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-11-16 12:09:34,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360765796] [2022-11-16 12:09:34,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:34,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:09:34,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:34,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:09:34,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:09:34,468 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-16 12:09:34,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 493 transitions, 1123 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:34,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:34,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-16 12:09:34,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:35,319 INFO L130 PetriNetUnfolder]: 383/2430 cut-off events. [2022-11-16 12:09:35,320 INFO L131 PetriNetUnfolder]: For 77/83 co-relation queries the response was YES. [2022-11-16 12:09:35,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3194 conditions, 2430 events. 383/2430 cut-off events. For 77/83 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 20272 event pairs, 211 based on Foata normal form. 1/2189 useless extension candidates. Maximal degree in co-relation 3184. Up to 507 conditions per place. [2022-11-16 12:09:35,345 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 88 selfloop transitions, 3 changer transitions 24/559 dead transitions. [2022-11-16 12:09:35,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 559 transitions, 1496 flow [2022-11-16 12:09:35,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:09:35,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 12:09:35,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 7528 transitions. [2022-11-16 12:09:35,360 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8581851345189239 [2022-11-16 12:09:35,360 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 7528 transitions. [2022-11-16 12:09:35,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 7528 transitions. [2022-11-16 12:09:35,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:35,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 7528 transitions. [2022-11-16 12:09:35,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 442.8235294117647) internal successors, (7528), 17 states have internal predecessors, (7528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:35,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 516.0) internal successors, (9288), 18 states have internal predecessors, (9288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:35,396 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 516.0) internal successors, (9288), 18 states have internal predecessors, (9288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:35,396 INFO L175 Difference]: Start difference. First operand has 475 places, 493 transitions, 1123 flow. Second operand 17 states and 7528 transitions. [2022-11-16 12:09:35,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 559 transitions, 1496 flow [2022-11-16 12:09:35,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 559 transitions, 1479 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-16 12:09:35,408 INFO L231 Difference]: Finished difference. Result has 503 places, 495 transitions, 1161 flow [2022-11-16 12:09:35,409 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1106, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1161, PETRI_PLACES=503, PETRI_TRANSITIONS=495} [2022-11-16 12:09:35,410 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 40 predicate places. [2022-11-16 12:09:35,410 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 495 transitions, 1161 flow [2022-11-16 12:09:35,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:35,412 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:35,412 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:35,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:35,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:35,619 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:09:35,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:35,620 INFO L85 PathProgramCache]: Analyzing trace with hash -791673132, now seen corresponding path program 3 times [2022-11-16 12:09:35,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:35,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131356040] [2022-11-16 12:09:35,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:35,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:35,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:36,015 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-16 12:09:36,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:36,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131356040] [2022-11-16 12:09:36,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131356040] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:36,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214201567] [2022-11-16 12:09:36,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:09:36,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:36,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:36,017 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:36,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:09:36,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-16 12:09:36,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:09:36,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:09:36,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:36,444 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-16 12:09:36,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:09:36,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214201567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:36,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:09:36,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-11-16 12:09:36,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609095683] [2022-11-16 12:09:36,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:36,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:09:36,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:36,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:09:36,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:09:36,454 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-16 12:09:36,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 495 transitions, 1161 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:36,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:36,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-16 12:09:36,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:37,415 INFO L130 PetriNetUnfolder]: 390/2492 cut-off events. [2022-11-16 12:09:37,416 INFO L131 PetriNetUnfolder]: For 929/942 co-relation queries the response was YES. [2022-11-16 12:09:37,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3950 conditions, 2492 events. 390/2492 cut-off events. For 929/942 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 20925 event pairs, 204 based on Foata normal form. 1/2244 useless extension candidates. Maximal degree in co-relation 3925. Up to 497 conditions per place. [2022-11-16 12:09:37,439 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 112 selfloop transitions, 5 changer transitions 22/583 dead transitions. [2022-11-16 12:09:37,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 583 transitions, 1824 flow [2022-11-16 12:09:37,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:09:37,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:09:37,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7976 transitions. [2022-11-16 12:09:37,455 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8587424633936261 [2022-11-16 12:09:37,455 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7976 transitions. [2022-11-16 12:09:37,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7976 transitions. [2022-11-16 12:09:37,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:37,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7976 transitions. [2022-11-16 12:09:37,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 443.1111111111111) internal successors, (7976), 18 states have internal predecessors, (7976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:37,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 516.0) internal successors, (9804), 19 states have internal predecessors, (9804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:37,495 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 516.0) internal successors, (9804), 19 states have internal predecessors, (9804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:37,496 INFO L175 Difference]: Start difference. First operand has 503 places, 495 transitions, 1161 flow. Second operand 18 states and 7976 transitions. [2022-11-16 12:09:37,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 583 transitions, 1824 flow [2022-11-16 12:09:37,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 583 transitions, 1762 flow, removed 28 selfloop flow, removed 9 redundant places. [2022-11-16 12:09:37,517 INFO L231 Difference]: Finished difference. Result has 515 places, 499 transitions, 1223 flow [2022-11-16 12:09:37,518 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1223, PETRI_PLACES=515, PETRI_TRANSITIONS=499} [2022-11-16 12:09:37,518 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 52 predicate places. [2022-11-16 12:09:37,519 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 499 transitions, 1223 flow [2022-11-16 12:09:37,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:37,520 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:37,520 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:37,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:37,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:37,727 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:09:37,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:37,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1493491560, now seen corresponding path program 4 times [2022-11-16 12:09:37,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:37,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537478737] [2022-11-16 12:09:37,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:37,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:38,091 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-16 12:09:38,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:38,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537478737] [2022-11-16 12:09:38,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537478737] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:38,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829265505] [2022-11-16 12:09:38,092 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:09:38,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:38,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:38,094 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:38,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:09:38,239 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:09:38,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:09:38,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:09:38,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:38,452 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-16 12:09:38,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:38,619 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-16 12:09:38,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829265505] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:09:38,620 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:09:38,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-16 12:09:38,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267904395] [2022-11-16 12:09:38,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:09:38,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 12:09:38,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:38,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 12:09:38,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-16 12:09:38,636 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 462 out of 516 [2022-11-16 12:09:38,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 499 transitions, 1223 flow. Second operand has 22 states, 22 states have (on average 465.04545454545456) internal successors, (10231), 22 states have internal predecessors, (10231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:38,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:38,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 462 of 516 [2022-11-16 12:09:38,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:39,201 INFO L130 PetriNetUnfolder]: 53/723 cut-off events. [2022-11-16 12:09:39,203 INFO L131 PetriNetUnfolder]: For 558/618 co-relation queries the response was YES. [2022-11-16 12:09:39,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1258 conditions, 723 events. 53/723 cut-off events. For 558/618 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3227 event pairs, 19 based on Foata normal form. 7/674 useless extension candidates. Maximal degree in co-relation 1225. Up to 34 conditions per place. [2022-11-16 12:09:39,212 INFO L137 encePairwiseOnDemand]: 500/516 looper letters, 36 selfloop transitions, 34 changer transitions 0/527 dead transitions. [2022-11-16 12:09:39,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 527 transitions, 1475 flow [2022-11-16 12:09:39,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:09:39,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 12:09:39,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 7928 transitions. [2022-11-16 12:09:39,228 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9037847697218422 [2022-11-16 12:09:39,228 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 7928 transitions. [2022-11-16 12:09:39,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 7928 transitions. [2022-11-16 12:09:39,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:39,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 7928 transitions. [2022-11-16 12:09:39,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 466.3529411764706) internal successors, (7928), 17 states have internal predecessors, (7928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:39,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 516.0) internal successors, (9288), 18 states have internal predecessors, (9288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:39,270 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 516.0) internal successors, (9288), 18 states have internal predecessors, (9288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:39,270 INFO L175 Difference]: Start difference. First operand has 515 places, 499 transitions, 1223 flow. Second operand 17 states and 7928 transitions. [2022-11-16 12:09:39,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 527 transitions, 1475 flow [2022-11-16 12:09:39,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 527 transitions, 1460 flow, removed 7 selfloop flow, removed 8 redundant places. [2022-11-16 12:09:39,283 INFO L231 Difference]: Finished difference. Result has 515 places, 513 transitions, 1383 flow [2022-11-16 12:09:39,284 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1208, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1383, PETRI_PLACES=515, PETRI_TRANSITIONS=513} [2022-11-16 12:09:39,287 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 52 predicate places. [2022-11-16 12:09:39,288 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 513 transitions, 1383 flow [2022-11-16 12:09:39,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 465.04545454545456) internal successors, (10231), 22 states have internal predecessors, (10231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:39,291 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:39,292 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:39,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:39,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa079f53-392a-4f19-9128-38768686efad/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:39,498 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:09:39,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:39,499 INFO L85 PathProgramCache]: Analyzing trace with hash 238945142, now seen corresponding path program 5 times [2022-11-16 12:09:39,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:39,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802772856] [2022-11-16 12:09:39,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:39,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:40,075 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:09:40,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:40,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802772856] [2022-11-16 12:09:40,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802772856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:40,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:40,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:09:40,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179587697] [2022-11-16 12:09:40,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:40,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:09:40,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:40,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:09:40,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:09:40,081 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-16 12:09:40,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 513 transitions, 1383 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:40,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:40,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-16 12:09:40,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:41,070 INFO L130 PetriNetUnfolder]: 407/2649 cut-off events. [2022-11-16 12:09:41,071 INFO L131 PetriNetUnfolder]: For 1541/1551 co-relation queries the response was YES. [2022-11-16 12:09:41,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4547 conditions, 2649 events. 407/2649 cut-off events. For 1541/1551 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 22506 event pairs, 229 based on Foata normal form. 1/2377 useless extension candidates. Maximal degree in co-relation 4518. Up to 581 conditions per place. [2022-11-16 12:09:41,094 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 76 selfloop transitions, 8 changer transitions 20/562 dead transitions. [2022-11-16 12:09:41,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 562 transitions, 1906 flow [2022-11-16 12:09:41,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:09:41,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 12:09:41,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 7073 transitions. [2022-11-16 12:09:41,107 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8567102713178295 [2022-11-16 12:09:41,107 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 7073 transitions. [2022-11-16 12:09:41,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 7073 transitions. [2022-11-16 12:09:41,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:41,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 7073 transitions. [2022-11-16 12:09:41,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 442.0625) internal successors, (7073), 16 states have internal predecessors, (7073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:41,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 516.0) internal successors, (8772), 17 states have internal predecessors, (8772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:41,137 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 516.0) internal successors, (8772), 17 states have internal predecessors, (8772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:41,138 INFO L175 Difference]: Start difference. First operand has 515 places, 513 transitions, 1383 flow. Second operand 16 states and 7073 transitions. [2022-11-16 12:09:41,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 562 transitions, 1906 flow [2022-11-16 12:09:41,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 562 transitions, 1861 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-11-16 12:09:41,159 INFO L231 Difference]: Finished difference. Result has 533 places, 520 transitions, 1453 flow [2022-11-16 12:09:41,160 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1338, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1453, PETRI_PLACES=533, PETRI_TRANSITIONS=520} [2022-11-16 12:09:41,161 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 70 predicate places. [2022-11-16 12:09:41,161 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 520 transitions, 1453 flow [2022-11-16 12:09:41,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:41,163 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:41,163 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:41,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:09:41,163 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:09:41,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:41,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1167376054, now seen corresponding path program 6 times [2022-11-16 12:09:41,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:41,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559834728] [2022-11-16 12:09:41,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:41,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:41,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:41,722 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:09:41,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:41,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559834728] [2022-11-16 12:09:41,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559834728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:41,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:41,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:09:41,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384144331] [2022-11-16 12:09:41,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:41,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:09:41,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:41,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:09:41,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:09:41,728 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-16 12:09:41,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 520 transitions, 1453 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:41,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:41,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-16 12:09:41,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:42,619 INFO L130 PetriNetUnfolder]: 419/2770 cut-off events. [2022-11-16 12:09:42,619 INFO L131 PetriNetUnfolder]: For 2469/2488 co-relation queries the response was YES. [2022-11-16 12:09:42,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4916 conditions, 2770 events. 419/2770 cut-off events. For 2469/2488 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 23420 event pairs, 231 based on Foata normal form. 2/2479 useless extension candidates. Maximal degree in co-relation 4876. Up to 540 conditions per place. [2022-11-16 12:09:42,649 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 72 selfloop transitions, 12 changer transitions 20/562 dead transitions. [2022-11-16 12:09:42,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 562 transitions, 2006 flow [2022-11-16 12:09:42,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:09:42,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 12:09:42,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 6637 transitions. [2022-11-16 12:09:42,729 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8574935400516795 [2022-11-16 12:09:42,729 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 6637 transitions. [2022-11-16 12:09:42,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 6637 transitions. [2022-11-16 12:09:42,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:42,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 6637 transitions. [2022-11-16 12:09:42,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 442.46666666666664) internal successors, (6637), 15 states have internal predecessors, (6637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:42,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 516.0) internal successors, (8256), 16 states have internal predecessors, (8256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:42,761 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 516.0) internal successors, (8256), 16 states have internal predecessors, (8256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:42,761 INFO L175 Difference]: Start difference. First operand has 533 places, 520 transitions, 1453 flow. Second operand 15 states and 6637 transitions. [2022-11-16 12:09:42,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 562 transitions, 2006 flow [2022-11-16 12:09:42,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 562 transitions, 1932 flow, removed 37 selfloop flow, removed 7 redundant places. [2022-11-16 12:09:42,787 INFO L231 Difference]: Finished difference. Result has 542 places, 525 transitions, 1550 flow [2022-11-16 12:09:42,789 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1423, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1550, PETRI_PLACES=542, PETRI_TRANSITIONS=525} [2022-11-16 12:09:42,790 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 79 predicate places. [2022-11-16 12:09:42,790 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 525 transitions, 1550 flow [2022-11-16 12:09:42,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:42,792 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:42,792 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:42,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:09:42,793 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:09:42,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:42,793 INFO L85 PathProgramCache]: Analyzing trace with hash 192410670, now seen corresponding path program 7 times [2022-11-16 12:09:42,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:42,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019977236] [2022-11-16 12:09:42,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:42,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:43,300 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:09:43,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:43,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019977236] [2022-11-16 12:09:43,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019977236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:43,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:43,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:09:43,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087765282] [2022-11-16 12:09:43,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:43,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:09:43,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:43,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:09:43,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:09:43,306 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-16 12:09:43,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 525 transitions, 1550 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:43,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:43,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-16 12:09:43,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:44,279 INFO L130 PetriNetUnfolder]: 390/2546 cut-off events. [2022-11-16 12:09:44,280 INFO L131 PetriNetUnfolder]: For 3065/3086 co-relation queries the response was YES. [2022-11-16 12:09:44,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4820 conditions, 2546 events. 390/2546 cut-off events. For 3065/3086 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 21486 event pairs, 234 based on Foata normal form. 3/2291 useless extension candidates. Maximal degree in co-relation 4774. Up to 592 conditions per place. [2022-11-16 12:09:44,305 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 73 selfloop transitions, 13 changer transitions 18/562 dead transitions. [2022-11-16 12:09:44,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 562 transitions, 2086 flow [2022-11-16 12:09:44,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:09:44,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 12:09:44,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 6194 transitions. [2022-11-16 12:09:44,316 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8574197120708749 [2022-11-16 12:09:44,316 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 6194 transitions. [2022-11-16 12:09:44,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 6194 transitions. [2022-11-16 12:09:44,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:44,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 6194 transitions. [2022-11-16 12:09:44,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 442.42857142857144) internal successors, (6194), 14 states have internal predecessors, (6194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:44,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 516.0) internal successors, (7740), 15 states have internal predecessors, (7740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:44,340 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 516.0) internal successors, (7740), 15 states have internal predecessors, (7740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:44,340 INFO L175 Difference]: Start difference. First operand has 542 places, 525 transitions, 1550 flow. Second operand 14 states and 6194 transitions. [2022-11-16 12:09:44,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 562 transitions, 2086 flow [2022-11-16 12:09:44,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 562 transitions, 2003 flow, removed 36 selfloop flow, removed 7 redundant places. [2022-11-16 12:09:44,376 INFO L231 Difference]: Finished difference. Result has 548 places, 530 transitions, 1619 flow [2022-11-16 12:09:44,377 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1501, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1619, PETRI_PLACES=548, PETRI_TRANSITIONS=530} [2022-11-16 12:09:44,378 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 85 predicate places. [2022-11-16 12:09:44,378 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 530 transitions, 1619 flow [2022-11-16 12:09:44,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:44,380 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:44,380 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:44,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:09:44,382 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:09:44,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:44,382 INFO L85 PathProgramCache]: Analyzing trace with hash 200144370, now seen corresponding path program 8 times [2022-11-16 12:09:44,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:44,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215659654] [2022-11-16 12:09:44,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:44,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:44,905 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:09:44,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:44,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215659654] [2022-11-16 12:09:44,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215659654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:44,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:44,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:09:44,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361499484] [2022-11-16 12:09:44,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:44,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:09:44,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:44,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:09:44,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:09:44,914 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-16 12:09:44,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 530 transitions, 1619 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:44,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:44,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-16 12:09:44,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:45,968 INFO L130 PetriNetUnfolder]: 383/2517 cut-off events. [2022-11-16 12:09:45,969 INFO L131 PetriNetUnfolder]: For 2940/2960 co-relation queries the response was YES. [2022-11-16 12:09:45,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4696 conditions, 2517 events. 383/2517 cut-off events. For 2940/2960 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 21256 event pairs, 231 based on Foata normal form. 3/2265 useless extension candidates. Maximal degree in co-relation 4647. Up to 577 conditions per place. [2022-11-16 12:09:45,995 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 71 selfloop transitions, 4 changer transitions 23/556 dead transitions. [2022-11-16 12:09:45,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 556 transitions, 1984 flow [2022-11-16 12:09:45,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:09:45,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 12:09:46,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 6190 transitions. [2022-11-16 12:09:46,008 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8568660022148394 [2022-11-16 12:09:46,008 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 6190 transitions. [2022-11-16 12:09:46,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 6190 transitions. [2022-11-16 12:09:46,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:46,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 6190 transitions. [2022-11-16 12:09:46,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 442.14285714285717) internal successors, (6190), 14 states have internal predecessors, (6190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:46,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 516.0) internal successors, (7740), 15 states have internal predecessors, (7740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:46,049 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 516.0) internal successors, (7740), 15 states have internal predecessors, (7740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:46,049 INFO L175 Difference]: Start difference. First operand has 548 places, 530 transitions, 1619 flow. Second operand 14 states and 6190 transitions. [2022-11-16 12:09:46,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 556 transitions, 1984 flow [2022-11-16 12:09:46,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 556 transitions, 1911 flow, removed 26 selfloop flow, removed 10 redundant places. [2022-11-16 12:09:46,079 INFO L231 Difference]: Finished difference. Result has 550 places, 519 transitions, 1452 flow [2022-11-16 12:09:46,080 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1452, PETRI_PLACES=550, PETRI_TRANSITIONS=519} [2022-11-16 12:09:46,081 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 87 predicate places. [2022-11-16 12:09:46,081 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 519 transitions, 1452 flow [2022-11-16 12:09:46,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:46,083 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:46,083 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:46,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:09:46,084 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:09:46,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:46,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1894622352, now seen corresponding path program 9 times [2022-11-16 12:09:46,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:46,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035018036] [2022-11-16 12:09:46,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:46,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:46,575 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:09:46,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:46,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035018036] [2022-11-16 12:09:46,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035018036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:46,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:46,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:09:46,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165641817] [2022-11-16 12:09:46,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:46,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:09:46,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:46,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:09:46,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:09:46,581 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-16 12:09:46,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 519 transitions, 1452 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:46,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:46,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-16 12:09:46,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:47,679 INFO L130 PetriNetUnfolder]: 388/2533 cut-off events. [2022-11-16 12:09:47,679 INFO L131 PetriNetUnfolder]: For 2752/2766 co-relation queries the response was YES. [2022-11-16 12:09:47,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4684 conditions, 2533 events. 388/2533 cut-off events. For 2752/2766 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 21298 event pairs, 216 based on Foata normal form. 2/2279 useless extension candidates. Maximal degree in co-relation 4638. Up to 535 conditions per place. [2022-11-16 12:09:47,712 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 75 selfloop transitions, 15 changer transitions 18/566 dead transitions. [2022-11-16 12:09:47,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 566 transitions, 2027 flow [2022-11-16 12:09:47,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:09:47,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 12:09:47,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 7075 transitions. [2022-11-16 12:09:47,721 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.856952519379845 [2022-11-16 12:09:47,721 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 7075 transitions. [2022-11-16 12:09:47,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 7075 transitions. [2022-11-16 12:09:47,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:47,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 7075 transitions. [2022-11-16 12:09:47,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 442.1875) internal successors, (7075), 16 states have internal predecessors, (7075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:47,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 516.0) internal successors, (8772), 17 states have internal predecessors, (8772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:47,747 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 516.0) internal successors, (8772), 17 states have internal predecessors, (8772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:47,748 INFO L175 Difference]: Start difference. First operand has 550 places, 519 transitions, 1452 flow. Second operand 16 states and 7075 transitions. [2022-11-16 12:09:47,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 566 transitions, 2027 flow [2022-11-16 12:09:47,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 566 transitions, 1944 flow, removed 22 selfloop flow, removed 13 redundant places. [2022-11-16 12:09:47,775 INFO L231 Difference]: Finished difference. Result has 542 places, 528 transitions, 1588 flow [2022-11-16 12:09:47,776 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1418, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1588, PETRI_PLACES=542, PETRI_TRANSITIONS=528} [2022-11-16 12:09:47,778 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 79 predicate places. [2022-11-16 12:09:47,778 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 528 transitions, 1588 flow [2022-11-16 12:09:47,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:47,779 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:47,780 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:47,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:09:47,780 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:09:47,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:47,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1234405858, now seen corresponding path program 10 times [2022-11-16 12:09:47,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:47,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182572760] [2022-11-16 12:09:47,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:47,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:48,197 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:09:48,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:48,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182572760] [2022-11-16 12:09:48,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182572760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:48,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:48,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:09:48,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300157511] [2022-11-16 12:09:48,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:48,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:09:48,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:48,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:09:48,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:09:48,204 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-16 12:09:48,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 528 transitions, 1588 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:48,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:48,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-16 12:09:48,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:49,053 INFO L130 PetriNetUnfolder]: 407/2720 cut-off events. [2022-11-16 12:09:49,053 INFO L131 PetriNetUnfolder]: For 2572/2586 co-relation queries the response was YES. [2022-11-16 12:09:49,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4855 conditions, 2720 events. 407/2720 cut-off events. For 2572/2586 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 22871 event pairs, 227 based on Foata normal form. 2/2427 useless extension candidates. Maximal degree in co-relation 4810. Up to 535 conditions per place. [2022-11-16 12:09:49,082 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 67 selfloop transitions, 17 changer transitions 18/560 dead transitions. [2022-11-16 12:09:49,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 560 transitions, 2068 flow [2022-11-16 12:09:49,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:09:49,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 12:09:49,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 6634 transitions. [2022-11-16 12:09:49,092 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8571059431524548 [2022-11-16 12:09:49,092 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 6634 transitions. [2022-11-16 12:09:49,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 6634 transitions. [2022-11-16 12:09:49,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:49,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 6634 transitions. [2022-11-16 12:09:49,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 442.26666666666665) internal successors, (6634), 15 states have internal predecessors, (6634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:49,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 516.0) internal successors, (8256), 16 states have internal predecessors, (8256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:49,116 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 516.0) internal successors, (8256), 16 states have internal predecessors, (8256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:49,116 INFO L175 Difference]: Start difference. First operand has 542 places, 528 transitions, 1588 flow. Second operand 15 states and 6634 transitions. [2022-11-16 12:09:49,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 560 transitions, 2068 flow [2022-11-16 12:09:49,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 560 transitions, 2012 flow, removed 16 selfloop flow, removed 6 redundant places. [2022-11-16 12:09:49,144 INFO L231 Difference]: Finished difference. Result has 552 places, 532 transitions, 1681 flow [2022-11-16 12:09:49,145 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1550, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1681, PETRI_PLACES=552, PETRI_TRANSITIONS=532} [2022-11-16 12:09:49,146 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 89 predicate places. [2022-11-16 12:09:49,146 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 532 transitions, 1681 flow [2022-11-16 12:09:49,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:49,148 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:49,148 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:49,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:09:49,148 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:09:49,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:49,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1358754364, now seen corresponding path program 11 times [2022-11-16 12:09:49,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:49,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060714726] [2022-11-16 12:09:49,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:49,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:49,526 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:09:49,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:49,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060714726] [2022-11-16 12:09:49,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060714726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:49,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:49,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:09:49,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745031640] [2022-11-16 12:09:49,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:49,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:09:49,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:49,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:09:49,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:09:49,532 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-16 12:09:49,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 532 transitions, 1681 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:49,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:49,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-16 12:09:49,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:50,255 INFO L130 PetriNetUnfolder]: 403/2698 cut-off events. [2022-11-16 12:09:50,256 INFO L131 PetriNetUnfolder]: For 2805/2819 co-relation queries the response was YES. [2022-11-16 12:09:50,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4861 conditions, 2698 events. 403/2698 cut-off events. For 2805/2819 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 22641 event pairs, 214 based on Foata normal form. 2/2412 useless extension candidates. Maximal degree in co-relation 4811. Up to 534 conditions per place. [2022-11-16 12:09:50,285 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 76 selfloop transitions, 8 changer transitions 23/565 dead transitions. [2022-11-16 12:09:50,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 565 transitions, 2076 flow [2022-11-16 12:09:50,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:09:50,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:09:50,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 5762 transitions. [2022-11-16 12:09:50,294 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8589743589743589 [2022-11-16 12:09:50,294 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 5762 transitions. [2022-11-16 12:09:50,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 5762 transitions. [2022-11-16 12:09:50,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:50,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 5762 transitions. [2022-11-16 12:09:50,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 443.2307692307692) internal successors, (5762), 13 states have internal predecessors, (5762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:50,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 516.0) internal successors, (7224), 14 states have internal predecessors, (7224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:50,317 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 516.0) internal successors, (7224), 14 states have internal predecessors, (7224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:50,317 INFO L175 Difference]: Start difference. First operand has 552 places, 532 transitions, 1681 flow. Second operand 13 states and 5762 transitions. [2022-11-16 12:09:50,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 565 transitions, 2076 flow [2022-11-16 12:09:50,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 565 transitions, 2006 flow, removed 22 selfloop flow, removed 8 redundant places. [2022-11-16 12:09:50,347 INFO L231 Difference]: Finished difference. Result has 554 places, 524 transitions, 1539 flow [2022-11-16 12:09:50,348 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1620, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1539, PETRI_PLACES=554, PETRI_TRANSITIONS=524} [2022-11-16 12:09:50,349 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 91 predicate places. [2022-11-16 12:09:50,349 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 524 transitions, 1539 flow [2022-11-16 12:09:50,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:50,350 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:50,350 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:50,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:09:50,351 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:09:50,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:50,351 INFO L85 PathProgramCache]: Analyzing trace with hash -145727648, now seen corresponding path program 12 times [2022-11-16 12:09:50,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:50,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042390336] [2022-11-16 12:09:50,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:50,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:50,771 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:09:50,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:50,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042390336] [2022-11-16 12:09:50,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042390336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:50,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:50,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:09:50,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632921995] [2022-11-16 12:09:50,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:50,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:09:50,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:50,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:09:50,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:09:50,777 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-16 12:09:50,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 524 transitions, 1539 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:50,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:50,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-16 12:09:50,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:51,548 INFO L130 PetriNetUnfolder]: 397/2655 cut-off events. [2022-11-16 12:09:51,548 INFO L131 PetriNetUnfolder]: For 2510/2524 co-relation queries the response was YES. [2022-11-16 12:09:51,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4661 conditions, 2655 events. 397/2655 cut-off events. For 2510/2524 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 22148 event pairs, 225 based on Foata normal form. 2/2364 useless extension candidates. Maximal degree in co-relation 4612. Up to 524 conditions per place. [2022-11-16 12:09:51,569 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 62 selfloop transitions, 2 changer transitions 24/546 dead transitions. [2022-11-16 12:09:51,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 546 transitions, 1845 flow [2022-11-16 12:09:51,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:09:51,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 12:09:51,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 6191 transitions. [2022-11-16 12:09:51,579 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8570044296788483 [2022-11-16 12:09:51,579 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 6191 transitions. [2022-11-16 12:09:51,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 6191 transitions. [2022-11-16 12:09:51,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:51,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 6191 transitions. [2022-11-16 12:09:51,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 442.2142857142857) internal successors, (6191), 14 states have internal predecessors, (6191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:51,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 516.0) internal successors, (7740), 15 states have internal predecessors, (7740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:51,601 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 516.0) internal successors, (7740), 15 states have internal predecessors, (7740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:51,601 INFO L175 Difference]: Start difference. First operand has 554 places, 524 transitions, 1539 flow. Second operand 14 states and 6191 transitions. [2022-11-16 12:09:51,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 546 transitions, 1845 flow [2022-11-16 12:09:51,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 546 transitions, 1777 flow, removed 16 selfloop flow, removed 14 redundant places. [2022-11-16 12:09:51,631 INFO L231 Difference]: Finished difference. Result has 545 places, 513 transitions, 1378 flow [2022-11-16 12:09:51,632 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1493, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1378, PETRI_PLACES=545, PETRI_TRANSITIONS=513} [2022-11-16 12:09:51,633 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 82 predicate places. [2022-11-16 12:09:51,633 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 513 transitions, 1378 flow [2022-11-16 12:09:51,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:51,634 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:51,635 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:51,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:09:51,635 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:09:51,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:51,636 INFO L85 PathProgramCache]: Analyzing trace with hash -618379078, now seen corresponding path program 1 times [2022-11-16 12:09:51,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:51,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377903536] [2022-11-16 12:09:51,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:51,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:52,050 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:09:52,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:52,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377903536] [2022-11-16 12:09:52,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377903536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:52,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:52,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:09:52,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911200675] [2022-11-16 12:09:52,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:52,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:09:52,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:52,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:09:52,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:09:52,056 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-16 12:09:52,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 513 transitions, 1378 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:52,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:52,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-16 12:09:52,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:52,940 INFO L130 PetriNetUnfolder]: 422/2811 cut-off events. [2022-11-16 12:09:52,940 INFO L131 PetriNetUnfolder]: For 2303/2323 co-relation queries the response was YES. [2022-11-16 12:09:52,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4811 conditions, 2811 events. 422/2811 cut-off events. For 2303/2323 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 23407 event pairs, 225 based on Foata normal form. 2/2515 useless extension candidates. Maximal degree in co-relation 4766. Up to 543 conditions per place. [2022-11-16 12:09:52,965 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 75 selfloop transitions, 13 changer transitions 16/563 dead transitions. [2022-11-16 12:09:52,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 563 transitions, 1854 flow [2022-11-16 12:09:52,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:09:52,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 12:09:52,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 7076 transitions. [2022-11-16 12:09:52,974 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8570736434108527 [2022-11-16 12:09:52,974 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 7076 transitions. [2022-11-16 12:09:52,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 7076 transitions. [2022-11-16 12:09:52,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:52,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 7076 transitions. [2022-11-16 12:09:52,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 442.25) internal successors, (7076), 16 states have internal predecessors, (7076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:52,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 516.0) internal successors, (8772), 17 states have internal predecessors, (8772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:52,998 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 516.0) internal successors, (8772), 17 states have internal predecessors, (8772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:52,999 INFO L175 Difference]: Start difference. First operand has 545 places, 513 transitions, 1378 flow. Second operand 16 states and 7076 transitions. [2022-11-16 12:09:52,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 563 transitions, 1854 flow [2022-11-16 12:09:53,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 563 transitions, 1818 flow, removed 14 selfloop flow, removed 15 redundant places. [2022-11-16 12:09:53,021 INFO L231 Difference]: Finished difference. Result has 535 places, 527 transitions, 1531 flow [2022-11-16 12:09:53,023 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1346, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1531, PETRI_PLACES=535, PETRI_TRANSITIONS=527} [2022-11-16 12:09:53,023 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 72 predicate places. [2022-11-16 12:09:53,023 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 527 transitions, 1531 flow [2022-11-16 12:09:53,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:53,025 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:53,025 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:53,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 12:09:53,025 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:09:53,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:53,026 INFO L85 PathProgramCache]: Analyzing trace with hash -152864524, now seen corresponding path program 2 times [2022-11-16 12:09:53,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:53,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173135284] [2022-11-16 12:09:53,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:53,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:53,445 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:09:53,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:53,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173135284] [2022-11-16 12:09:53,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173135284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:53,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:53,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:09:53,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151314281] [2022-11-16 12:09:53,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:53,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:09:53,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:53,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:09:53,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:09:53,451 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-16 12:09:53,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 527 transitions, 1531 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:53,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:53,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-16 12:09:53,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:54,219 INFO L130 PetriNetUnfolder]: 396/2510 cut-off events. [2022-11-16 12:09:54,219 INFO L131 PetriNetUnfolder]: For 2674/2710 co-relation queries the response was YES. [2022-11-16 12:09:54,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4753 conditions, 2510 events. 396/2510 cut-off events. For 2674/2710 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 20529 event pairs, 221 based on Foata normal form. 8/2271 useless extension candidates. Maximal degree in co-relation 4711. Up to 506 conditions per place. [2022-11-16 12:09:54,237 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 110 selfloop transitions, 8 changer transitions 22/599 dead transitions. [2022-11-16 12:09:54,238 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 599 transitions, 2189 flow [2022-11-16 12:09:54,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:09:54,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:09:54,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7977 transitions. [2022-11-16 12:09:54,246 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8588501291989664 [2022-11-16 12:09:54,247 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7977 transitions. [2022-11-16 12:09:54,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7977 transitions. [2022-11-16 12:09:54,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:54,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7977 transitions. [2022-11-16 12:09:54,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 443.1666666666667) internal successors, (7977), 18 states have internal predecessors, (7977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:54,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 516.0) internal successors, (9804), 19 states have internal predecessors, (9804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:54,273 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 516.0) internal successors, (9804), 19 states have internal predecessors, (9804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:54,273 INFO L175 Difference]: Start difference. First operand has 535 places, 527 transitions, 1531 flow. Second operand 18 states and 7977 transitions. [2022-11-16 12:09:54,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 599 transitions, 2189 flow [2022-11-16 12:09:54,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 599 transitions, 2057 flow, removed 66 selfloop flow, removed 3 redundant places. [2022-11-16 12:09:54,302 INFO L231 Difference]: Finished difference. Result has 554 places, 527 transitions, 1506 flow [2022-11-16 12:09:54,302 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1453, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1506, PETRI_PLACES=554, PETRI_TRANSITIONS=527} [2022-11-16 12:09:54,303 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 91 predicate places. [2022-11-16 12:09:54,303 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 527 transitions, 1506 flow [2022-11-16 12:09:54,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:54,304 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:54,305 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:54,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 12:09:54,305 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:09:54,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:54,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1436323868, now seen corresponding path program 3 times [2022-11-16 12:09:54,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:54,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979032205] [2022-11-16 12:09:54,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:54,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:54,660 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:09:54,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:54,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979032205] [2022-11-16 12:09:54,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979032205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:54,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:54,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:09:54,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971087132] [2022-11-16 12:09:54,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:54,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:09:54,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:54,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:09:54,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:09:54,666 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-16 12:09:54,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 527 transitions, 1506 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:54,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:54,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-16 12:09:54,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:55,455 INFO L130 PetriNetUnfolder]: 410/2746 cut-off events. [2022-11-16 12:09:55,455 INFO L131 PetriNetUnfolder]: For 4043/4086 co-relation queries the response was YES. [2022-11-16 12:09:55,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5417 conditions, 2746 events. 410/2746 cut-off events. For 4043/4086 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 23372 event pairs, 233 based on Foata normal form. 2/2470 useless extension candidates. Maximal degree in co-relation 5364. Up to 546 conditions per place. [2022-11-16 12:09:55,476 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 113 selfloop transitions, 10 changer transitions 24/606 dead transitions. [2022-11-16 12:09:55,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 606 transitions, 2318 flow [2022-11-16 12:09:55,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:09:55,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 12:09:55,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 7524 transitions. [2022-11-16 12:09:55,486 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8577291381668947 [2022-11-16 12:09:55,487 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 7524 transitions. [2022-11-16 12:09:55,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 7524 transitions. [2022-11-16 12:09:55,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:55,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 7524 transitions. [2022-11-16 12:09:55,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 442.5882352941176) internal successors, (7524), 17 states have internal predecessors, (7524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:55,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 516.0) internal successors, (9288), 18 states have internal predecessors, (9288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:55,510 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 516.0) internal successors, (9288), 18 states have internal predecessors, (9288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:55,510 INFO L175 Difference]: Start difference. First operand has 554 places, 527 transitions, 1506 flow. Second operand 17 states and 7524 transitions. [2022-11-16 12:09:55,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 606 transitions, 2318 flow [2022-11-16 12:09:55,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 606 transitions, 2250 flow, removed 32 selfloop flow, removed 10 redundant places. [2022-11-16 12:09:55,545 INFO L231 Difference]: Finished difference. Result has 564 places, 531 transitions, 1597 flow [2022-11-16 12:09:55,546 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1483, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1597, PETRI_PLACES=564, PETRI_TRANSITIONS=531} [2022-11-16 12:09:55,546 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 101 predicate places. [2022-11-16 12:09:55,546 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 531 transitions, 1597 flow [2022-11-16 12:09:55,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:55,548 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:55,548 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:55,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 12:09:55,548 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:09:55,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:55,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1870613536, now seen corresponding path program 4 times [2022-11-16 12:09:55,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:55,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178464841] [2022-11-16 12:09:55,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:55,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:55,901 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:09:55,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:55,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178464841] [2022-11-16 12:09:55,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178464841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:55,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:55,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:09:55,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925208415] [2022-11-16 12:09:55,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:55,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:09:55,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:55,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:09:55,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:09:55,907 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-16 12:09:55,910 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 531 transitions, 1597 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:55,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:55,910 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-16 12:09:55,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:56,662 INFO L130 PetriNetUnfolder]: 421/2882 cut-off events. [2022-11-16 12:09:56,662 INFO L131 PetriNetUnfolder]: For 4298/4336 co-relation queries the response was YES. [2022-11-16 12:09:56,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5622 conditions, 2882 events. 421/2882 cut-off events. For 4298/4336 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 24493 event pairs, 235 based on Foata normal form. 5/2587 useless extension candidates. Maximal degree in co-relation 5563. Up to 564 conditions per place. [2022-11-16 12:09:56,689 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 79 selfloop transitions, 4 changer transitions 20/562 dead transitions. [2022-11-16 12:09:56,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 562 transitions, 2019 flow [2022-11-16 12:09:56,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:09:56,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:09:56,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 5759 transitions. [2022-11-16 12:09:56,695 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8585271317829457 [2022-11-16 12:09:56,695 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 5759 transitions. [2022-11-16 12:09:56,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 5759 transitions. [2022-11-16 12:09:56,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:56,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 5759 transitions. [2022-11-16 12:09:56,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 443.0) internal successors, (5759), 13 states have internal predecessors, (5759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:56,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 516.0) internal successors, (7224), 14 states have internal predecessors, (7224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:56,713 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 516.0) internal successors, (7224), 14 states have internal predecessors, (7224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:56,713 INFO L175 Difference]: Start difference. First operand has 564 places, 531 transitions, 1597 flow. Second operand 13 states and 5759 transitions. [2022-11-16 12:09:56,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 562 transitions, 2019 flow [2022-11-16 12:09:56,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 562 transitions, 1960 flow, removed 28 selfloop flow, removed 12 redundant places. [2022-11-16 12:09:56,747 INFO L231 Difference]: Finished difference. Result has 557 places, 523 transitions, 1498 flow [2022-11-16 12:09:56,748 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1559, PETRI_DIFFERENCE_MINUEND_PLACES=540, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1498, PETRI_PLACES=557, PETRI_TRANSITIONS=523} [2022-11-16 12:09:56,748 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 94 predicate places. [2022-11-16 12:09:56,749 INFO L495 AbstractCegarLoop]: Abstraction has has 557 places, 523 transitions, 1498 flow [2022-11-16 12:09:56,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:56,750 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:56,750 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:56,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 12:09:56,750 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:09:56,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:56,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1086676074, now seen corresponding path program 5 times [2022-11-16 12:09:56,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:56,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160199877] [2022-11-16 12:09:56,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:56,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:57,130 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:09:57,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:57,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160199877] [2022-11-16 12:09:57,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160199877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:57,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:57,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:09:57,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476848845] [2022-11-16 12:09:57,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:57,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:09:57,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:57,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:09:57,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:09:57,136 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-16 12:09:57,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 523 transitions, 1498 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:57,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:57,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-16 12:09:57,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:57,936 INFO L130 PetriNetUnfolder]: 417/2806 cut-off events. [2022-11-16 12:09:57,937 INFO L131 PetriNetUnfolder]: For 3848/3881 co-relation queries the response was YES. [2022-11-16 12:09:57,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5489 conditions, 2806 events. 417/2806 cut-off events. For 3848/3881 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 23794 event pairs, 248 based on Foata normal form. 2/2509 useless extension candidates. Maximal degree in co-relation 5436. Up to 601 conditions per place. [2022-11-16 12:09:57,957 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 78 selfloop transitions, 14 changer transitions 16/567 dead transitions. [2022-11-16 12:09:57,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 567 transitions, 2101 flow [2022-11-16 12:09:57,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:09:57,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 12:09:57,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 6196 transitions. [2022-11-16 12:09:57,964 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8576965669988926 [2022-11-16 12:09:57,964 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 6196 transitions. [2022-11-16 12:09:57,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 6196 transitions. [2022-11-16 12:09:57,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:57,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 6196 transitions. [2022-11-16 12:09:57,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 442.57142857142856) internal successors, (6196), 14 states have internal predecessors, (6196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:57,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 516.0) internal successors, (7740), 15 states have internal predecessors, (7740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:57,983 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 516.0) internal successors, (7740), 15 states have internal predecessors, (7740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:57,984 INFO L175 Difference]: Start difference. First operand has 557 places, 523 transitions, 1498 flow. Second operand 14 states and 6196 transitions. [2022-11-16 12:09:57,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 567 transitions, 2101 flow [2022-11-16 12:09:58,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 567 transitions, 1987 flow, removed 38 selfloop flow, removed 13 redundant places. [2022-11-16 12:09:58,011 INFO L231 Difference]: Finished difference. Result has 555 places, 533 transitions, 1629 flow [2022-11-16 12:09:58,012 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1464, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1629, PETRI_PLACES=555, PETRI_TRANSITIONS=533} [2022-11-16 12:09:58,013 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 92 predicate places. [2022-11-16 12:09:58,013 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 533 transitions, 1629 flow [2022-11-16 12:09:58,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:58,014 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:58,014 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:58,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 12:09:58,014 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:09:58,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:58,015 INFO L85 PathProgramCache]: Analyzing trace with hash 41205172, now seen corresponding path program 6 times [2022-11-16 12:09:58,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:58,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933263994] [2022-11-16 12:09:58,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:58,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:58,404 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:09:58,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:58,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933263994] [2022-11-16 12:09:58,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933263994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:58,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:58,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:09:58,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3784825] [2022-11-16 12:09:58,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:58,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:09:58,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:58,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:09:58,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:09:58,412 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-16 12:09:58,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 533 transitions, 1629 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:58,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:58,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-16 12:09:58,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:59,252 INFO L130 PetriNetUnfolder]: 413/2728 cut-off events. [2022-11-16 12:09:59,252 INFO L131 PetriNetUnfolder]: For 3660/3690 co-relation queries the response was YES. [2022-11-16 12:09:59,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5446 conditions, 2728 events. 413/2728 cut-off events. For 3660/3690 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 23169 event pairs, 249 based on Foata normal form. 2/2439 useless extension candidates. Maximal degree in co-relation 5392. Up to 569 conditions per place. [2022-11-16 12:09:59,274 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 84 selfloop transitions, 11 changer transitions 17/571 dead transitions. [2022-11-16 12:09:59,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 571 transitions, 2221 flow [2022-11-16 12:09:59,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:09:59,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 12:09:59,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 6633 transitions. [2022-11-16 12:09:59,281 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8569767441860465 [2022-11-16 12:09:59,282 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 6633 transitions. [2022-11-16 12:09:59,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 6633 transitions. [2022-11-16 12:09:59,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:59,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 6633 transitions. [2022-11-16 12:09:59,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 442.2) internal successors, (6633), 15 states have internal predecessors, (6633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:59,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 516.0) internal successors, (8256), 16 states have internal predecessors, (8256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:59,303 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 516.0) internal successors, (8256), 16 states have internal predecessors, (8256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:59,303 INFO L175 Difference]: Start difference. First operand has 555 places, 533 transitions, 1629 flow. Second operand 15 states and 6633 transitions. [2022-11-16 12:09:59,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 571 transitions, 2221 flow [2022-11-16 12:09:59,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 571 transitions, 2151 flow, removed 28 selfloop flow, removed 6 redundant places. [2022-11-16 12:09:59,335 INFO L231 Difference]: Finished difference. Result has 568 places, 538 transitions, 1706 flow [2022-11-16 12:09:59,336 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1588, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1706, PETRI_PLACES=568, PETRI_TRANSITIONS=538} [2022-11-16 12:09:59,336 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 105 predicate places. [2022-11-16 12:09:59,336 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 538 transitions, 1706 flow [2022-11-16 12:09:59,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:59,337 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:59,338 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:59,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 12:09:59,338 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:09:59,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:59,339 INFO L85 PathProgramCache]: Analyzing trace with hash 943752780, now seen corresponding path program 7 times [2022-11-16 12:09:59,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:59,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616669323] [2022-11-16 12:09:59,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:59,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:59,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:59,753 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:09:59,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:59,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616669323] [2022-11-16 12:09:59,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616669323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:59,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:59,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:09:59,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811832317] [2022-11-16 12:09:59,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:59,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:09:59,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:59,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:09:59,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:09:59,759 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-16 12:09:59,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 538 transitions, 1706 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:59,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:59,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-16 12:09:59,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:00,618 INFO L130 PetriNetUnfolder]: 410/2725 cut-off events. [2022-11-16 12:10:00,619 INFO L131 PetriNetUnfolder]: For 4310/4351 co-relation queries the response was YES. [2022-11-16 12:10:00,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5524 conditions, 2725 events. 410/2725 cut-off events. For 4310/4351 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 23198 event pairs, 247 based on Foata normal form. 4/2441 useless extension candidates. Maximal degree in co-relation 5464. Up to 563 conditions per place. [2022-11-16 12:10:00,641 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 79 selfloop transitions, 14 changer transitions 19/571 dead transitions. [2022-11-16 12:10:00,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 571 transitions, 2264 flow [2022-11-16 12:10:00,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:10:00,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 12:10:00,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 6632 transitions. [2022-11-16 12:10:00,649 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8568475452196382 [2022-11-16 12:10:00,649 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 6632 transitions. [2022-11-16 12:10:00,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 6632 transitions. [2022-11-16 12:10:00,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:00,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 6632 transitions. [2022-11-16 12:10:00,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 442.1333333333333) internal successors, (6632), 15 states have internal predecessors, (6632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:00,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 516.0) internal successors, (8256), 16 states have internal predecessors, (8256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:00,669 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 516.0) internal successors, (8256), 16 states have internal predecessors, (8256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:00,670 INFO L175 Difference]: Start difference. First operand has 568 places, 538 transitions, 1706 flow. Second operand 15 states and 6632 transitions. [2022-11-16 12:10:00,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 571 transitions, 2264 flow [2022-11-16 12:10:00,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 571 transitions, 2193 flow, removed 31 selfloop flow, removed 8 redundant places. [2022-11-16 12:10:00,708 INFO L231 Difference]: Finished difference. Result has 575 places, 542 transitions, 1794 flow [2022-11-16 12:10:00,708 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1673, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1794, PETRI_PLACES=575, PETRI_TRANSITIONS=542} [2022-11-16 12:10:00,709 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 112 predicate places. [2022-11-16 12:10:00,709 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 542 transitions, 1794 flow [2022-11-16 12:10:00,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:00,710 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:00,711 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:00,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 12:10:00,711 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:10:00,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:00,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1447651248, now seen corresponding path program 8 times [2022-11-16 12:10:00,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:00,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206544880] [2022-11-16 12:10:00,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:00,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:00,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:01,071 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:10:01,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:01,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206544880] [2022-11-16 12:10:01,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206544880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:01,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:01,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:10:01,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422759022] [2022-11-16 12:10:01,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:01,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:10:01,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:01,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:10:01,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:10:01,077 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-16 12:10:01,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 542 transitions, 1794 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:01,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:01,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-16 12:10:01,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:01,820 INFO L130 PetriNetUnfolder]: 387/2578 cut-off events. [2022-11-16 12:10:01,820 INFO L131 PetriNetUnfolder]: For 4045/4090 co-relation queries the response was YES. [2022-11-16 12:10:01,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5299 conditions, 2578 events. 387/2578 cut-off events. For 4045/4090 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 21695 event pairs, 235 based on Foata normal form. 4/2318 useless extension candidates. Maximal degree in co-relation 5236. Up to 560 conditions per place. [2022-11-16 12:10:01,839 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 77 selfloop transitions, 4 changer transitions 21/561 dead transitions. [2022-11-16 12:10:01,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 561 transitions, 2143 flow [2022-11-16 12:10:01,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:10:01,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 12:10:01,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 6188 transitions. [2022-11-16 12:10:01,844 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8565891472868217 [2022-11-16 12:10:01,844 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 6188 transitions. [2022-11-16 12:10:01,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 6188 transitions. [2022-11-16 12:10:01,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:01,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 6188 transitions. [2022-11-16 12:10:01,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 442.0) internal successors, (6188), 14 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:01,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 516.0) internal successors, (7740), 15 states have internal predecessors, (7740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:01,864 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 516.0) internal successors, (7740), 15 states have internal predecessors, (7740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:01,864 INFO L175 Difference]: Start difference. First operand has 575 places, 542 transitions, 1794 flow. Second operand 14 states and 6188 transitions. [2022-11-16 12:10:01,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 561 transitions, 2143 flow [2022-11-16 12:10:01,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 561 transitions, 2064 flow, removed 30 selfloop flow, removed 8 redundant places. [2022-11-16 12:10:01,904 INFO L231 Difference]: Finished difference. Result has 578 places, 531 transitions, 1608 flow [2022-11-16 12:10:01,905 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1735, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1608, PETRI_PLACES=578, PETRI_TRANSITIONS=531} [2022-11-16 12:10:01,906 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 115 predicate places. [2022-11-16 12:10:01,906 INFO L495 AbstractCegarLoop]: Abstraction has has 578 places, 531 transitions, 1608 flow [2022-11-16 12:10:01,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:01,907 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:01,907 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:01,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 12:10:01,907 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:10:01,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:01,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1685837968, now seen corresponding path program 9 times [2022-11-16 12:10:01,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:01,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519441724] [2022-11-16 12:10:01,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:01,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:01,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:02,320 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:10:02,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:02,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519441724] [2022-11-16 12:10:02,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519441724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:02,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:02,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:10:02,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469400289] [2022-11-16 12:10:02,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:02,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:10:02,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:02,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:10:02,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:10:02,326 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-16 12:10:02,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 531 transitions, 1608 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:02,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:02,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-16 12:10:02,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:03,169 INFO L130 PetriNetUnfolder]: 403/2772 cut-off events. [2022-11-16 12:10:03,169 INFO L131 PetriNetUnfolder]: For 3850/3884 co-relation queries the response was YES. [2022-11-16 12:10:03,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5380 conditions, 2772 events. 403/2772 cut-off events. For 3850/3884 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 23422 event pairs, 244 based on Foata normal form. 3/2475 useless extension candidates. Maximal degree in co-relation 5318. Up to 587 conditions per place. [2022-11-16 12:10:03,199 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 76 selfloop transitions, 10 changer transitions 22/567 dead transitions. [2022-11-16 12:10:03,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 567 transitions, 2138 flow [2022-11-16 12:10:03,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:10:03,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 12:10:03,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 7070 transitions. [2022-11-16 12:10:03,277 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8563468992248062 [2022-11-16 12:10:03,277 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 7070 transitions. [2022-11-16 12:10:03,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 7070 transitions. [2022-11-16 12:10:03,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:03,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 7070 transitions. [2022-11-16 12:10:03,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 441.875) internal successors, (7070), 16 states have internal predecessors, (7070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:03,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 516.0) internal successors, (8772), 17 states have internal predecessors, (8772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:03,298 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 516.0) internal successors, (8772), 17 states have internal predecessors, (8772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:03,298 INFO L175 Difference]: Start difference. First operand has 578 places, 531 transitions, 1608 flow. Second operand 16 states and 7070 transitions. [2022-11-16 12:10:03,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 567 transitions, 2138 flow [2022-11-16 12:10:03,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 567 transitions, 2040 flow, removed 26 selfloop flow, removed 16 redundant places. [2022-11-16 12:10:03,330 INFO L231 Difference]: Finished difference. Result has 569 places, 532 transitions, 1634 flow [2022-11-16 12:10:03,330 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1562, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1634, PETRI_PLACES=569, PETRI_TRANSITIONS=532} [2022-11-16 12:10:03,331 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 106 predicate places. [2022-11-16 12:10:03,331 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 532 transitions, 1634 flow [2022-11-16 12:10:03,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:03,332 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:03,332 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:03,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 12:10:03,333 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:10:03,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:03,333 INFO L85 PathProgramCache]: Analyzing trace with hash 294824092, now seen corresponding path program 10 times [2022-11-16 12:10:03,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:03,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674783115] [2022-11-16 12:10:03,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:03,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:03,697 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:10:03,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:03,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674783115] [2022-11-16 12:10:03,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674783115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:03,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:03,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:10:03,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431279243] [2022-11-16 12:10:03,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:03,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:10:03,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:03,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:10:03,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:10:03,703 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-16 12:10:03,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 532 transitions, 1634 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:03,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:03,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-16 12:10:03,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:04,541 INFO L130 PetriNetUnfolder]: 379/2535 cut-off events. [2022-11-16 12:10:04,541 INFO L131 PetriNetUnfolder]: For 3088/3114 co-relation queries the response was YES. [2022-11-16 12:10:04,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4955 conditions, 2535 events. 379/2535 cut-off events. For 3088/3114 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 21282 event pairs, 244 based on Foata normal form. 3/2265 useless extension candidates. Maximal degree in co-relation 4895. Up to 576 conditions per place. [2022-11-16 12:10:04,556 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 71 selfloop transitions, 2 changer transitions 22/554 dead transitions. [2022-11-16 12:10:04,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 572 places, 554 transitions, 1956 flow [2022-11-16 12:10:04,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:10:04,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 12:10:04,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 6189 transitions. [2022-11-16 12:10:04,562 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8567275747508306 [2022-11-16 12:10:04,562 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 6189 transitions. [2022-11-16 12:10:04,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 6189 transitions. [2022-11-16 12:10:04,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:04,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 6189 transitions. [2022-11-16 12:10:04,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 442.07142857142856) internal successors, (6189), 14 states have internal predecessors, (6189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:04,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 516.0) internal successors, (7740), 15 states have internal predecessors, (7740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:04,579 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 516.0) internal successors, (7740), 15 states have internal predecessors, (7740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:04,579 INFO L175 Difference]: Start difference. First operand has 569 places, 532 transitions, 1634 flow. Second operand 14 states and 6189 transitions. [2022-11-16 12:10:04,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 572 places, 554 transitions, 1956 flow [2022-11-16 12:10:04,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 554 transitions, 1903 flow, removed 21 selfloop flow, removed 11 redundant places. [2022-11-16 12:10:04,609 INFO L231 Difference]: Finished difference. Result has 566 places, 521 transitions, 1480 flow [2022-11-16 12:10:04,609 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1597, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1480, PETRI_PLACES=566, PETRI_TRANSITIONS=521} [2022-11-16 12:10:04,610 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 103 predicate places. [2022-11-16 12:10:04,610 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 521 transitions, 1480 flow [2022-11-16 12:10:04,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:04,611 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:04,611 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:04,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 12:10:04,612 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:10:04,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:04,612 INFO L85 PathProgramCache]: Analyzing trace with hash -973478603, now seen corresponding path program 1 times [2022-11-16 12:10:04,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:04,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156032909] [2022-11-16 12:10:04,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:04,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:04,743 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:10:04,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:04,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156032909] [2022-11-16 12:10:04,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156032909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:04,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:04,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:10:04,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227844602] [2022-11-16 12:10:04,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:04,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:10:04,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:04,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:10:04,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:10:04,747 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 472 out of 516 [2022-11-16 12:10:04,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 521 transitions, 1480 flow. Second operand has 3 states, 3 states have (on average 475.0) internal successors, (1425), 3 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:04,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:04,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 472 of 516 [2022-11-16 12:10:04,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:05,383 INFO L130 PetriNetUnfolder]: 173/2883 cut-off events. [2022-11-16 12:10:05,383 INFO L131 PetriNetUnfolder]: For 1717/1819 co-relation queries the response was YES. [2022-11-16 12:10:05,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4236 conditions, 2883 events. 173/2883 cut-off events. For 1717/1819 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 23393 event pairs, 36 based on Foata normal form. 2/2624 useless extension candidates. Maximal degree in co-relation 4180. Up to 65 conditions per place. [2022-11-16 12:10:05,397 INFO L137 encePairwiseOnDemand]: 511/516 looper letters, 21 selfloop transitions, 4 changer transitions 4/528 dead transitions. [2022-11-16 12:10:05,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 528 transitions, 1547 flow [2022-11-16 12:10:05,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:10:05,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:10:05,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1442 transitions. [2022-11-16 12:10:05,399 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9315245478036176 [2022-11-16 12:10:05,399 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1442 transitions. [2022-11-16 12:10:05,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1442 transitions. [2022-11-16 12:10:05,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:05,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1442 transitions. [2022-11-16 12:10:05,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 480.6666666666667) internal successors, (1442), 3 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:05,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:05,401 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:05,401 INFO L175 Difference]: Start difference. First operand has 566 places, 521 transitions, 1480 flow. Second operand 3 states and 1442 transitions. [2022-11-16 12:10:05,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 528 transitions, 1547 flow [2022-11-16 12:10:05,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 528 transitions, 1511 flow, removed 15 selfloop flow, removed 14 redundant places. [2022-11-16 12:10:05,428 INFO L231 Difference]: Finished difference. Result has 536 places, 518 transitions, 1446 flow [2022-11-16 12:10:05,428 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1444, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1446, PETRI_PLACES=536, PETRI_TRANSITIONS=518} [2022-11-16 12:10:05,429 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 73 predicate places. [2022-11-16 12:10:05,429 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 518 transitions, 1446 flow [2022-11-16 12:10:05,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 475.0) internal successors, (1425), 3 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:05,430 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:05,430 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:05,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-16 12:10:05,430 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:10:05,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:05,431 INFO L85 PathProgramCache]: Analyzing trace with hash 287715398, now seen corresponding path program 1 times [2022-11-16 12:10:05,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:05,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656266382] [2022-11-16 12:10:05,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:05,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:05,581 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:10:05,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:05,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656266382] [2022-11-16 12:10:05,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656266382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:05,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:05,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:10:05,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580748818] [2022-11-16 12:10:05,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:05,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:10:05,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:05,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:10:05,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:10:05,585 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 472 out of 516 [2022-11-16 12:10:05,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 518 transitions, 1446 flow. Second operand has 3 states, 3 states have (on average 475.0) internal successors, (1425), 3 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:05,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:05,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 472 of 516 [2022-11-16 12:10:05,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:05,943 INFO L130 PetriNetUnfolder]: 157/1668 cut-off events. [2022-11-16 12:10:05,943 INFO L131 PetriNetUnfolder]: For 751/833 co-relation queries the response was YES. [2022-11-16 12:10:05,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2361 conditions, 1668 events. 157/1668 cut-off events. For 751/833 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 11259 event pairs, 69 based on Foata normal form. 1/1485 useless extension candidates. Maximal degree in co-relation 2315. Up to 130 conditions per place. [2022-11-16 12:10:05,955 INFO L137 encePairwiseOnDemand]: 511/516 looper letters, 20 selfloop transitions, 4 changer transitions 0/524 dead transitions. [2022-11-16 12:10:05,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 524 transitions, 1508 flow [2022-11-16 12:10:05,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:10:05,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:10:05,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1441 transitions. [2022-11-16 12:10:05,957 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9308785529715762 [2022-11-16 12:10:05,957 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1441 transitions. [2022-11-16 12:10:05,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1441 transitions. [2022-11-16 12:10:05,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:05,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1441 transitions. [2022-11-16 12:10:05,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 480.3333333333333) internal successors, (1441), 3 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:05,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:05,959 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:05,959 INFO L175 Difference]: Start difference. First operand has 536 places, 518 transitions, 1446 flow. Second operand 3 states and 1441 transitions. [2022-11-16 12:10:05,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 524 transitions, 1508 flow [2022-11-16 12:10:05,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 524 transitions, 1472 flow, removed 8 selfloop flow, removed 10 redundant places. [2022-11-16 12:10:05,971 INFO L231 Difference]: Finished difference. Result has 529 places, 519 transitions, 1428 flow [2022-11-16 12:10:05,972 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1410, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1428, PETRI_PLACES=529, PETRI_TRANSITIONS=519} [2022-11-16 12:10:05,972 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 66 predicate places. [2022-11-16 12:10:05,972 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 519 transitions, 1428 flow [2022-11-16 12:10:05,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 475.0) internal successors, (1425), 3 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:05,973 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:05,973 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:05,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-16 12:10:05,974 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:10:05,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:05,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1445620159, now seen corresponding path program 1 times [2022-11-16 12:10:05,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:05,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230029989] [2022-11-16 12:10:05,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:05,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:06,098 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:10:06,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:06,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230029989] [2022-11-16 12:10:06,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230029989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:06,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:06,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:10:06,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001232834] [2022-11-16 12:10:06,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:06,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:10:06,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:06,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:10:06,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:10:06,103 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 470 out of 516 [2022-11-16 12:10:06,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 519 transitions, 1428 flow. Second operand has 3 states, 3 states have (on average 474.3333333333333) internal successors, (1423), 3 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:06,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:06,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 470 of 516 [2022-11-16 12:10:06,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:06,623 INFO L130 PetriNetUnfolder]: 160/2451 cut-off events. [2022-11-16 12:10:06,623 INFO L131 PetriNetUnfolder]: For 1121/1214 co-relation queries the response was YES. [2022-11-16 12:10:06,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3611 conditions, 2451 events. 160/2451 cut-off events. For 1121/1214 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 18875 event pairs, 60 based on Foata normal form. 9/2272 useless extension candidates. Maximal degree in co-relation 3572. Up to 98 conditions per place. [2022-11-16 12:10:06,638 INFO L137 encePairwiseOnDemand]: 509/516 looper letters, 26 selfloop transitions, 5 changer transitions 0/530 dead transitions. [2022-11-16 12:10:06,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 530 transitions, 1518 flow [2022-11-16 12:10:06,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:10:06,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:10:06,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1443 transitions. [2022-11-16 12:10:06,641 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9321705426356589 [2022-11-16 12:10:06,641 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1443 transitions. [2022-11-16 12:10:06,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1443 transitions. [2022-11-16 12:10:06,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:06,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1443 transitions. [2022-11-16 12:10:06,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 481.0) internal successors, (1443), 3 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:06,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:06,644 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:06,644 INFO L175 Difference]: Start difference. First operand has 529 places, 519 transitions, 1428 flow. Second operand 3 states and 1443 transitions. [2022-11-16 12:10:06,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 530 transitions, 1518 flow [2022-11-16 12:10:06,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 530 transitions, 1514 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:10:06,661 INFO L231 Difference]: Finished difference. Result has 532 places, 522 transitions, 1463 flow [2022-11-16 12:10:06,661 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1424, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1463, PETRI_PLACES=532, PETRI_TRANSITIONS=522} [2022-11-16 12:10:06,662 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 69 predicate places. [2022-11-16 12:10:06,663 INFO L495 AbstractCegarLoop]: Abstraction has has 532 places, 522 transitions, 1463 flow [2022-11-16 12:10:06,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 474.3333333333333) internal successors, (1423), 3 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:06,663 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:06,663 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:06,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-16 12:10:06,664 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:10:06,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:06,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1254709845, now seen corresponding path program 2 times [2022-11-16 12:10:06,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:06,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245696483] [2022-11-16 12:10:06,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:06,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:06,780 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:10:06,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:06,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245696483] [2022-11-16 12:10:06,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245696483] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:06,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:06,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:10:06,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252817934] [2022-11-16 12:10:06,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:06,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:10:06,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:06,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:10:06,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:10:06,785 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 470 out of 516 [2022-11-16 12:10:06,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 522 transitions, 1463 flow. Second operand has 3 states, 3 states have (on average 474.3333333333333) internal successors, (1423), 3 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:06,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:06,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 470 of 516 [2022-11-16 12:10:06,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:07,306 INFO L130 PetriNetUnfolder]: 156/2442 cut-off events. [2022-11-16 12:10:07,306 INFO L131 PetriNetUnfolder]: For 952/1033 co-relation queries the response was YES. [2022-11-16 12:10:07,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3443 conditions, 2442 events. 156/2442 cut-off events. For 952/1033 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 18655 event pairs, 61 based on Foata normal form. 8/2258 useless extension candidates. Maximal degree in co-relation 3403. Up to 134 conditions per place. [2022-11-16 12:10:07,322 INFO L137 encePairwiseOnDemand]: 512/516 looper letters, 26 selfloop transitions, 2 changer transitions 3/530 dead transitions. [2022-11-16 12:10:07,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 530 transitions, 1544 flow [2022-11-16 12:10:07,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:10:07,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:10:07,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1440 transitions. [2022-11-16 12:10:07,324 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9302325581395349 [2022-11-16 12:10:07,325 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1440 transitions. [2022-11-16 12:10:07,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1440 transitions. [2022-11-16 12:10:07,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:07,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1440 transitions. [2022-11-16 12:10:07,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 480.0) internal successors, (1440), 3 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:07,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:07,329 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:07,329 INFO L175 Difference]: Start difference. First operand has 532 places, 522 transitions, 1463 flow. Second operand 3 states and 1440 transitions. [2022-11-16 12:10:07,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 530 transitions, 1544 flow [2022-11-16 12:10:07,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 530 transitions, 1504 flow, removed 15 selfloop flow, removed 6 redundant places. [2022-11-16 12:10:07,347 INFO L231 Difference]: Finished difference. Result has 529 places, 522 transitions, 1433 flow [2022-11-16 12:10:07,348 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1423, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1433, PETRI_PLACES=529, PETRI_TRANSITIONS=522} [2022-11-16 12:10:07,348 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 66 predicate places. [2022-11-16 12:10:07,349 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 522 transitions, 1433 flow [2022-11-16 12:10:07,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 474.3333333333333) internal successors, (1423), 3 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:07,349 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:07,350 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:07,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-16 12:10:07,350 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:10:07,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:07,350 INFO L85 PathProgramCache]: Analyzing trace with hash 580201297, now seen corresponding path program 1 times [2022-11-16 12:10:07,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:07,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818149244] [2022-11-16 12:10:07,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:07,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:07,454 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:10:07,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:07,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818149244] [2022-11-16 12:10:07,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818149244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:07,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:07,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:10:07,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366087282] [2022-11-16 12:10:07,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:07,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:10:07,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:07,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:10:07,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:10:07,458 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 470 out of 516 [2022-11-16 12:10:07,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 522 transitions, 1433 flow. Second operand has 3 states, 3 states have (on average 474.3333333333333) internal successors, (1423), 3 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:07,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:07,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 470 of 516 [2022-11-16 12:10:07,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:07,884 INFO L130 PetriNetUnfolder]: 139/2254 cut-off events. [2022-11-16 12:10:07,885 INFO L131 PetriNetUnfolder]: For 735/802 co-relation queries the response was YES. [2022-11-16 12:10:07,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3114 conditions, 2254 events. 139/2254 cut-off events. For 735/802 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 16627 event pairs, 45 based on Foata normal form. 7/2085 useless extension candidates. Maximal degree in co-relation 3077. Up to 90 conditions per place. [2022-11-16 12:10:07,896 INFO L137 encePairwiseOnDemand]: 509/516 looper letters, 29 selfloop transitions, 5 changer transitions 1/534 dead transitions. [2022-11-16 12:10:07,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 534 transitions, 1546 flow [2022-11-16 12:10:07,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:10:07,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:10:07,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1443 transitions. [2022-11-16 12:10:07,897 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9321705426356589 [2022-11-16 12:10:07,897 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1443 transitions. [2022-11-16 12:10:07,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1443 transitions. [2022-11-16 12:10:07,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:07,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1443 transitions. [2022-11-16 12:10:07,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 481.0) internal successors, (1443), 3 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:07,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:07,902 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:07,903 INFO L175 Difference]: Start difference. First operand has 529 places, 522 transitions, 1433 flow. Second operand 3 states and 1443 transitions. [2022-11-16 12:10:07,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 534 transitions, 1546 flow [2022-11-16 12:10:07,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 534 transitions, 1537 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-16 12:10:07,917 INFO L231 Difference]: Finished difference. Result has 531 places, 524 transitions, 1457 flow [2022-11-16 12:10:07,917 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1425, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1457, PETRI_PLACES=531, PETRI_TRANSITIONS=524} [2022-11-16 12:10:07,918 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 68 predicate places. [2022-11-16 12:10:07,918 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 524 transitions, 1457 flow [2022-11-16 12:10:07,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 474.3333333333333) internal successors, (1423), 3 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:07,919 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:07,919 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:07,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-16 12:10:07,919 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:10:07,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:07,920 INFO L85 PathProgramCache]: Analyzing trace with hash -199607199, now seen corresponding path program 2 times [2022-11-16 12:10:07,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:07,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963492057] [2022-11-16 12:10:07,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:07,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:08,014 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:10:08,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:08,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963492057] [2022-11-16 12:10:08,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963492057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:08,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:08,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:10:08,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767021423] [2022-11-16 12:10:08,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:08,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:10:08,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:08,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:10:08,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:10:08,018 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 470 out of 516 [2022-11-16 12:10:08,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 524 transitions, 1457 flow. Second operand has 3 states, 3 states have (on average 474.3333333333333) internal successors, (1423), 3 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:08,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:08,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 470 of 516 [2022-11-16 12:10:08,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:08,516 INFO L130 PetriNetUnfolder]: 122/2108 cut-off events. [2022-11-16 12:10:08,516 INFO L131 PetriNetUnfolder]: For 555/620 co-relation queries the response was YES. [2022-11-16 12:10:08,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2893 conditions, 2108 events. 122/2108 cut-off events. For 555/620 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 15078 event pairs, 44 based on Foata normal form. 3/1949 useless extension candidates. Maximal degree in co-relation 2856. Up to 119 conditions per place. [2022-11-16 12:10:08,530 INFO L137 encePairwiseOnDemand]: 512/516 looper letters, 27 selfloop transitions, 2 changer transitions 4/530 dead transitions. [2022-11-16 12:10:08,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 530 transitions, 1534 flow [2022-11-16 12:10:08,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:10:08,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:10:08,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1440 transitions. [2022-11-16 12:10:08,531 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9302325581395349 [2022-11-16 12:10:08,532 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1440 transitions. [2022-11-16 12:10:08,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1440 transitions. [2022-11-16 12:10:08,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:08,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1440 transitions. [2022-11-16 12:10:08,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 480.0) internal successors, (1440), 3 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:08,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:08,534 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:08,534 INFO L175 Difference]: Start difference. First operand has 531 places, 524 transitions, 1457 flow. Second operand 3 states and 1440 transitions. [2022-11-16 12:10:08,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 530 transitions, 1534 flow [2022-11-16 12:10:08,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 530 transitions, 1502 flow, removed 8 selfloop flow, removed 5 redundant places. [2022-11-16 12:10:08,548 INFO L231 Difference]: Finished difference. Result has 529 places, 521 transitions, 1416 flow [2022-11-16 12:10:08,549 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1415, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1416, PETRI_PLACES=529, PETRI_TRANSITIONS=521} [2022-11-16 12:10:08,549 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 66 predicate places. [2022-11-16 12:10:08,549 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 521 transitions, 1416 flow [2022-11-16 12:10:08,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 474.3333333333333) internal successors, (1423), 3 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:08,550 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:08,550 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:08,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-16 12:10:08,551 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:10:08,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:08,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1347280886, now seen corresponding path program 1 times [2022-11-16 12:10:08,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:08,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535134986] [2022-11-16 12:10:08,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:08,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:08,812 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:10:08,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:08,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535134986] [2022-11-16 12:10:08,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535134986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:08,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:08,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:10:08,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815711422] [2022-11-16 12:10:08,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:08,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:10:08,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:08,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:10:08,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:10:08,816 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 432 out of 516 [2022-11-16 12:10:08,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 521 transitions, 1416 flow. Second operand has 5 states, 5 states have (on average 437.2) internal successors, (2186), 5 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:08,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:08,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 432 of 516 [2022-11-16 12:10:08,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:09,596 INFO L130 PetriNetUnfolder]: 469/3715 cut-off events. [2022-11-16 12:10:09,596 INFO L131 PetriNetUnfolder]: For 1915/2057 co-relation queries the response was YES. [2022-11-16 12:10:09,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5645 conditions, 3715 events. 469/3715 cut-off events. For 1915/2057 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 32466 event pairs, 108 based on Foata normal form. 89/3516 useless extension candidates. Maximal degree in co-relation 5608. Up to 565 conditions per place. [2022-11-16 12:10:09,614 INFO L137 encePairwiseOnDemand]: 508/516 looper letters, 79 selfloop transitions, 6 changer transitions 7/551 dead transitions. [2022-11-16 12:10:09,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 551 transitions, 1747 flow [2022-11-16 12:10:09,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:10:09,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:10:09,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2680 transitions. [2022-11-16 12:10:09,616 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8656330749354005 [2022-11-16 12:10:09,617 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2680 transitions. [2022-11-16 12:10:09,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2680 transitions. [2022-11-16 12:10:09,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:09,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2680 transitions. [2022-11-16 12:10:09,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 446.6666666666667) internal successors, (2680), 6 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:09,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 516.0) internal successors, (3612), 7 states have internal predecessors, (3612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:09,620 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 516.0) internal successors, (3612), 7 states have internal predecessors, (3612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:09,621 INFO L175 Difference]: Start difference. First operand has 529 places, 521 transitions, 1416 flow. Second operand 6 states and 2680 transitions. [2022-11-16 12:10:09,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 551 transitions, 1747 flow [2022-11-16 12:10:09,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 551 transitions, 1740 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-16 12:10:09,636 INFO L231 Difference]: Finished difference. Result has 534 places, 521 transitions, 1429 flow [2022-11-16 12:10:09,637 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1429, PETRI_PLACES=534, PETRI_TRANSITIONS=521} [2022-11-16 12:10:09,637 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 71 predicate places. [2022-11-16 12:10:09,637 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 521 transitions, 1429 flow [2022-11-16 12:10:09,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 437.2) internal successors, (2186), 5 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:09,638 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:09,638 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:09,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-16 12:10:09,638 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:10:09,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:09,639 INFO L85 PathProgramCache]: Analyzing trace with hash 699261207, now seen corresponding path program 1 times [2022-11-16 12:10:09,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:09,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296344501] [2022-11-16 12:10:09,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:09,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:09,888 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:10:09,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:09,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296344501] [2022-11-16 12:10:09,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296344501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:09,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:09,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:10:09,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577964747] [2022-11-16 12:10:09,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:09,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:10:09,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:09,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:10:09,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:10:09,892 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 432 out of 516 [2022-11-16 12:10:09,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 521 transitions, 1429 flow. Second operand has 5 states, 5 states have (on average 437.2) internal successors, (2186), 5 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:09,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:09,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 432 of 516 [2022-11-16 12:10:09,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:11,028 INFO L130 PetriNetUnfolder]: 862/5277 cut-off events. [2022-11-16 12:10:11,028 INFO L131 PetriNetUnfolder]: For 2127/2127 co-relation queries the response was YES. [2022-11-16 12:10:11,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8104 conditions, 5277 events. 862/5277 cut-off events. For 2127/2127 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 51457 event pairs, 465 based on Foata normal form. 0/4720 useless extension candidates. Maximal degree in co-relation 8066. Up to 1052 conditions per place. [2022-11-16 12:10:11,050 INFO L137 encePairwiseOnDemand]: 501/516 looper letters, 62 selfloop transitions, 15 changer transitions 19/555 dead transitions. [2022-11-16 12:10:11,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 555 transitions, 1776 flow [2022-11-16 12:10:11,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:10:11,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:10:11,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3115 transitions. [2022-11-16 12:10:11,053 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8624031007751938 [2022-11-16 12:10:11,053 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3115 transitions. [2022-11-16 12:10:11,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3115 transitions. [2022-11-16 12:10:11,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:11,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3115 transitions. [2022-11-16 12:10:11,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 445.0) internal successors, (3115), 7 states have internal predecessors, (3115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:11,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 516.0) internal successors, (4128), 8 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:11,060 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 516.0) internal successors, (4128), 8 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:11,061 INFO L175 Difference]: Start difference. First operand has 534 places, 521 transitions, 1429 flow. Second operand 7 states and 3115 transitions. [2022-11-16 12:10:11,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 555 transitions, 1776 flow [2022-11-16 12:10:11,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 555 transitions, 1762 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:10:11,078 INFO L231 Difference]: Finished difference. Result has 541 places, 527 transitions, 1506 flow [2022-11-16 12:10:11,079 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1421, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1506, PETRI_PLACES=541, PETRI_TRANSITIONS=527} [2022-11-16 12:10:11,080 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 78 predicate places. [2022-11-16 12:10:11,080 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 527 transitions, 1506 flow [2022-11-16 12:10:11,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 437.2) internal successors, (2186), 5 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:11,080 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:11,081 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:11,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-16 12:10:11,081 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:10:11,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:11,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1846319242, now seen corresponding path program 2 times [2022-11-16 12:10:11,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:11,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114454085] [2022-11-16 12:10:11,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:11,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:11,303 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:10:11,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:11,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114454085] [2022-11-16 12:10:11,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114454085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:11,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:11,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:10:11,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197403183] [2022-11-16 12:10:11,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:11,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:10:11,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:11,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:10:11,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:10:11,307 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 432 out of 516 [2022-11-16 12:10:11,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 527 transitions, 1506 flow. Second operand has 5 states, 5 states have (on average 437.2) internal successors, (2186), 5 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:11,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:11,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 432 of 516 [2022-11-16 12:10:11,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:12,117 INFO L130 PetriNetUnfolder]: 461/3519 cut-off events. [2022-11-16 12:10:12,117 INFO L131 PetriNetUnfolder]: For 1628/2030 co-relation queries the response was YES. [2022-11-16 12:10:12,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5798 conditions, 3519 events. 461/3519 cut-off events. For 1628/2030 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 30472 event pairs, 269 based on Foata normal form. 22/3341 useless extension candidates. Maximal degree in co-relation 5756. Up to 695 conditions per place. [2022-11-16 12:10:12,140 INFO L137 encePairwiseOnDemand]: 501/516 looper letters, 65 selfloop transitions, 15 changer transitions 16/559 dead transitions. [2022-11-16 12:10:12,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 559 transitions, 1858 flow [2022-11-16 12:10:12,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:10:12,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:10:12,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3113 transitions. [2022-11-16 12:10:12,143 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8618493909191584 [2022-11-16 12:10:12,143 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3113 transitions. [2022-11-16 12:10:12,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3113 transitions. [2022-11-16 12:10:12,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:12,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3113 transitions. [2022-11-16 12:10:12,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 444.7142857142857) internal successors, (3113), 7 states have internal predecessors, (3113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:12,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 516.0) internal successors, (4128), 8 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:12,151 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 516.0) internal successors, (4128), 8 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:12,151 INFO L175 Difference]: Start difference. First operand has 541 places, 527 transitions, 1506 flow. Second operand 7 states and 3113 transitions. [2022-11-16 12:10:12,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 559 transitions, 1858 flow [2022-11-16 12:10:12,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 559 transitions, 1856 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-16 12:10:12,246 INFO L231 Difference]: Finished difference. Result has 549 places, 533 transitions, 1591 flow [2022-11-16 12:10:12,249 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1504, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1591, PETRI_PLACES=549, PETRI_TRANSITIONS=533} [2022-11-16 12:10:12,250 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 86 predicate places. [2022-11-16 12:10:12,250 INFO L495 AbstractCegarLoop]: Abstraction has has 549 places, 533 transitions, 1591 flow [2022-11-16 12:10:12,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 437.2) internal successors, (2186), 5 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:12,251 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:12,251 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:12,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-16 12:10:12,255 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:10:12,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:12,256 INFO L85 PathProgramCache]: Analyzing trace with hash -123914449, now seen corresponding path program 2 times [2022-11-16 12:10:12,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:12,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725878682] [2022-11-16 12:10:12,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:12,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:12,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:12,572 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:10:12,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:12,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725878682] [2022-11-16 12:10:12,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725878682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:12,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:12,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:10:12,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543799282] [2022-11-16 12:10:12,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:12,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:10:12,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:12,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:10:12,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:10:12,577 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 434 out of 516 [2022-11-16 12:10:12,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 533 transitions, 1591 flow. Second operand has 5 states, 5 states have (on average 438.8) internal successors, (2194), 5 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:12,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:12,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 434 of 516 [2022-11-16 12:10:12,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:13,707 INFO L130 PetriNetUnfolder]: 772/4834 cut-off events. [2022-11-16 12:10:13,708 INFO L131 PetriNetUnfolder]: For 3589/3597 co-relation queries the response was YES. [2022-11-16 12:10:13,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8019 conditions, 4834 events. 772/4834 cut-off events. For 3589/3597 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 46929 event pairs, 189 based on Foata normal form. 44/4551 useless extension candidates. Maximal degree in co-relation 7973. Up to 983 conditions per place. [2022-11-16 12:10:13,741 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 80 selfloop transitions, 12 changer transitions 17/574 dead transitions. [2022-11-16 12:10:13,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 574 transitions, 2024 flow [2022-11-16 12:10:13,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:10:13,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:10:13,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2700 transitions. [2022-11-16 12:10:13,744 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.872093023255814 [2022-11-16 12:10:13,744 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2700 transitions. [2022-11-16 12:10:13,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2700 transitions. [2022-11-16 12:10:13,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:13,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2700 transitions. [2022-11-16 12:10:13,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 450.0) internal successors, (2700), 6 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:13,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 516.0) internal successors, (3612), 7 states have internal predecessors, (3612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:13,749 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 516.0) internal successors, (3612), 7 states have internal predecessors, (3612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:13,749 INFO L175 Difference]: Start difference. First operand has 549 places, 533 transitions, 1591 flow. Second operand 6 states and 2700 transitions. [2022-11-16 12:10:13,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 574 transitions, 2024 flow [2022-11-16 12:10:13,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 574 transitions, 2022 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-16 12:10:13,765 INFO L231 Difference]: Finished difference. Result has 557 places, 538 transitions, 1688 flow [2022-11-16 12:10:13,766 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1589, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1688, PETRI_PLACES=557, PETRI_TRANSITIONS=538} [2022-11-16 12:10:13,767 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 94 predicate places. [2022-11-16 12:10:13,767 INFO L495 AbstractCegarLoop]: Abstraction has has 557 places, 538 transitions, 1688 flow [2022-11-16 12:10:13,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 438.8) internal successors, (2194), 5 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:13,767 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:13,768 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:13,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-16 12:10:13,768 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:10:13,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:13,769 INFO L85 PathProgramCache]: Analyzing trace with hash -136975218, now seen corresponding path program 3 times [2022-11-16 12:10:13,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:13,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781559543] [2022-11-16 12:10:13,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:13,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:13,987 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:10:13,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:13,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781559543] [2022-11-16 12:10:13,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781559543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:13,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:13,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:10:13,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947735804] [2022-11-16 12:10:13,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:13,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:10:13,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:13,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:10:13,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:10:13,991 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 432 out of 516 [2022-11-16 12:10:13,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 538 transitions, 1688 flow. Second operand has 5 states, 5 states have (on average 437.2) internal successors, (2186), 5 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:13,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:13,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 432 of 516 [2022-11-16 12:10:13,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:15,132 INFO L130 PetriNetUnfolder]: 529/4898 cut-off events. [2022-11-16 12:10:15,133 INFO L131 PetriNetUnfolder]: For 2791/2888 co-relation queries the response was YES. [2022-11-16 12:10:15,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7740 conditions, 4898 events. 529/4898 cut-off events. For 2791/2888 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 46333 event pairs, 224 based on Foata normal form. 14/4714 useless extension candidates. Maximal degree in co-relation 7690. Up to 661 conditions per place. [2022-11-16 12:10:15,168 INFO L137 encePairwiseOnDemand]: 499/516 looper letters, 76 selfloop transitions, 14 changer transitions 14/569 dead transitions. [2022-11-16 12:10:15,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 569 transitions, 2096 flow [2022-11-16 12:10:15,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:10:15,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:10:15,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3118 transitions. [2022-11-16 12:10:15,171 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.863233665559247 [2022-11-16 12:10:15,171 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3118 transitions. [2022-11-16 12:10:15,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3118 transitions. [2022-11-16 12:10:15,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:15,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3118 transitions. [2022-11-16 12:10:15,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 445.42857142857144) internal successors, (3118), 7 states have internal predecessors, (3118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:15,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 516.0) internal successors, (4128), 8 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:15,180 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 516.0) internal successors, (4128), 8 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:15,180 INFO L175 Difference]: Start difference. First operand has 557 places, 538 transitions, 1688 flow. Second operand 7 states and 3118 transitions. [2022-11-16 12:10:15,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 569 transitions, 2096 flow [2022-11-16 12:10:15,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 569 transitions, 2083 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-16 12:10:15,209 INFO L231 Difference]: Finished difference. Result has 564 places, 536 transitions, 1677 flow [2022-11-16 12:10:15,210 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1667, PETRI_DIFFERENCE_MINUEND_PLACES=556, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1677, PETRI_PLACES=564, PETRI_TRANSITIONS=536} [2022-11-16 12:10:15,211 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 101 predicate places. [2022-11-16 12:10:15,211 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 536 transitions, 1677 flow [2022-11-16 12:10:15,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 437.2) internal successors, (2186), 5 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:15,211 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:15,212 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:15,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-16 12:10:15,212 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:10:15,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:15,213 INFO L85 PathProgramCache]: Analyzing trace with hash 2056012489, now seen corresponding path program 3 times [2022-11-16 12:10:15,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:15,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277468797] [2022-11-16 12:10:15,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:15,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:15,423 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:10:15,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:15,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277468797] [2022-11-16 12:10:15,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277468797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:15,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:15,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:10:15,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426268169] [2022-11-16 12:10:15,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:15,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:10:15,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:15,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:10:15,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:10:15,428 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 432 out of 516 [2022-11-16 12:10:15,430 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 536 transitions, 1677 flow. Second operand has 5 states, 5 states have (on average 437.2) internal successors, (2186), 5 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:15,430 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:15,430 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 432 of 516 [2022-11-16 12:10:15,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:16,626 INFO L130 PetriNetUnfolder]: 763/5023 cut-off events. [2022-11-16 12:10:16,626 INFO L131 PetriNetUnfolder]: For 3595/3615 co-relation queries the response was YES. [2022-11-16 12:10:16,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8640 conditions, 5023 events. 763/5023 cut-off events. For 3595/3615 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 48780 event pairs, 376 based on Foata normal form. 14/4721 useless extension candidates. Maximal degree in co-relation 8587. Up to 783 conditions per place. [2022-11-16 12:10:16,651 INFO L137 encePairwiseOnDemand]: 501/516 looper letters, 76 selfloop transitions, 14 changer transitions 33/586 dead transitions. [2022-11-16 12:10:16,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 586 transitions, 2122 flow [2022-11-16 12:10:16,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:10:16,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:10:16,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3131 transitions. [2022-11-16 12:10:16,654 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8668327796234773 [2022-11-16 12:10:16,655 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3131 transitions. [2022-11-16 12:10:16,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3131 transitions. [2022-11-16 12:10:16,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:16,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3131 transitions. [2022-11-16 12:10:16,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 447.2857142857143) internal successors, (3131), 7 states have internal predecessors, (3131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:16,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 516.0) internal successors, (4128), 8 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:16,663 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 516.0) internal successors, (4128), 8 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:16,663 INFO L175 Difference]: Start difference. First operand has 564 places, 536 transitions, 1677 flow. Second operand 7 states and 3131 transitions. [2022-11-16 12:10:16,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 586 transitions, 2122 flow [2022-11-16 12:10:16,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 586 transitions, 2095 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-16 12:10:16,692 INFO L231 Difference]: Finished difference. Result has 567 places, 532 transitions, 1654 flow [2022-11-16 12:10:16,693 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1656, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1654, PETRI_PLACES=567, PETRI_TRANSITIONS=532} [2022-11-16 12:10:16,694 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 104 predicate places. [2022-11-16 12:10:16,694 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 532 transitions, 1654 flow [2022-11-16 12:10:16,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 437.2) internal successors, (2186), 5 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:16,694 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:16,695 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:16,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-16 12:10:16,695 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:10:16,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:16,696 INFO L85 PathProgramCache]: Analyzing trace with hash -2034664894, now seen corresponding path program 4 times [2022-11-16 12:10:16,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:16,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235083734] [2022-11-16 12:10:16,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:16,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:16,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:16,892 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:10:16,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:16,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235083734] [2022-11-16 12:10:16,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235083734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:16,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:16,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:10:16,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169758272] [2022-11-16 12:10:16,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:16,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:10:16,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:16,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:10:16,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:10:16,896 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 432 out of 516 [2022-11-16 12:10:16,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 532 transitions, 1654 flow. Second operand has 5 states, 5 states have (on average 437.2) internal successors, (2186), 5 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:16,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:16,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 432 of 516 [2022-11-16 12:10:16,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:17,760 INFO L130 PetriNetUnfolder]: 432/3329 cut-off events. [2022-11-16 12:10:17,760 INFO L131 PetriNetUnfolder]: For 3189/3333 co-relation queries the response was YES. [2022-11-16 12:10:17,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5930 conditions, 3329 events. 432/3329 cut-off events. For 3189/3333 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 28229 event pairs, 264 based on Foata normal form. 7/3231 useless extension candidates. Maximal degree in co-relation 5876. Up to 599 conditions per place. [2022-11-16 12:10:17,798 INFO L137 encePairwiseOnDemand]: 501/516 looper letters, 58 selfloop transitions, 12 changer transitions 27/553 dead transitions. [2022-11-16 12:10:17,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 553 transitions, 1947 flow [2022-11-16 12:10:17,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:10:17,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:10:17,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3102 transitions. [2022-11-16 12:10:17,802 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8588039867109635 [2022-11-16 12:10:17,802 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3102 transitions. [2022-11-16 12:10:17,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3102 transitions. [2022-11-16 12:10:17,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:17,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3102 transitions. [2022-11-16 12:10:17,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 443.14285714285717) internal successors, (3102), 7 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:17,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 516.0) internal successors, (4128), 8 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:17,809 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 516.0) internal successors, (4128), 8 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:17,810 INFO L175 Difference]: Start difference. First operand has 567 places, 532 transitions, 1654 flow. Second operand 7 states and 3102 transitions. [2022-11-16 12:10:17,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 553 transitions, 1947 flow [2022-11-16 12:10:17,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 553 transitions, 1910 flow, removed 9 selfloop flow, removed 7 redundant places. [2022-11-16 12:10:17,836 INFO L231 Difference]: Finished difference. Result has 566 places, 522 transitions, 1582 flow [2022-11-16 12:10:17,837 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1625, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1582, PETRI_PLACES=566, PETRI_TRANSITIONS=522} [2022-11-16 12:10:17,838 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 103 predicate places. [2022-11-16 12:10:17,838 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 522 transitions, 1582 flow [2022-11-16 12:10:17,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 437.2) internal successors, (2186), 5 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:17,839 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:17,839 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:17,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-16 12:10:17,839 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:10:17,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:17,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1595562677, now seen corresponding path program 4 times [2022-11-16 12:10:17,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:17,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503397544] [2022-11-16 12:10:17,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:17,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:18,036 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:10:18,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:18,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503397544] [2022-11-16 12:10:18,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503397544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:18,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:18,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:10:18,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780572644] [2022-11-16 12:10:18,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:18,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:10:18,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:18,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:10:18,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:10:18,040 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 434 out of 516 [2022-11-16 12:10:18,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 522 transitions, 1582 flow. Second operand has 5 states, 5 states have (on average 438.8) internal successors, (2194), 5 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:18,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:18,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 434 of 516 [2022-11-16 12:10:18,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:19,101 INFO L130 PetriNetUnfolder]: 708/4560 cut-off events. [2022-11-16 12:10:19,101 INFO L131 PetriNetUnfolder]: For 3213/3217 co-relation queries the response was YES. [2022-11-16 12:10:19,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7713 conditions, 4560 events. 708/4560 cut-off events. For 3213/3217 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 42633 event pairs, 215 based on Foata normal form. 2/4278 useless extension candidates. Maximal degree in co-relation 7661. Up to 794 conditions per place. [2022-11-16 12:10:19,130 INFO L137 encePairwiseOnDemand]: 489/516 looper letters, 73 selfloop transitions, 34 changer transitions 15/576 dead transitions. [2022-11-16 12:10:19,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 576 transitions, 2037 flow [2022-11-16 12:10:19,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:10:19,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:10:19,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3146 transitions. [2022-11-16 12:10:19,133 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8709856035437431 [2022-11-16 12:10:19,133 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3146 transitions. [2022-11-16 12:10:19,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3146 transitions. [2022-11-16 12:10:19,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:19,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3146 transitions. [2022-11-16 12:10:19,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 449.42857142857144) internal successors, (3146), 7 states have internal predecessors, (3146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:19,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 516.0) internal successors, (4128), 8 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:19,138 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 516.0) internal successors, (4128), 8 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:19,138 INFO L175 Difference]: Start difference. First operand has 566 places, 522 transitions, 1582 flow. Second operand 7 states and 3146 transitions. [2022-11-16 12:10:19,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 576 transitions, 2037 flow [2022-11-16 12:10:19,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 576 transitions, 1966 flow, removed 14 selfloop flow, removed 15 redundant places. [2022-11-16 12:10:19,156 INFO L231 Difference]: Finished difference. Result has 547 places, 535 transitions, 1675 flow [2022-11-16 12:10:19,157 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1533, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1675, PETRI_PLACES=547, PETRI_TRANSITIONS=535} [2022-11-16 12:10:19,157 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 84 predicate places. [2022-11-16 12:10:19,157 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 535 transitions, 1675 flow [2022-11-16 12:10:19,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 438.8) internal successors, (2194), 5 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:19,158 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:19,158 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:19,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-16 12:10:19,159 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:10:19,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:19,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1122157793, now seen corresponding path program 1 times [2022-11-16 12:10:19,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:19,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909279855] [2022-11-16 12:10:19,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:19,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:19,378 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:10:19,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:19,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909279855] [2022-11-16 12:10:19,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909279855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:19,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:19,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:10:19,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070335557] [2022-11-16 12:10:19,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:19,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:10:19,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:19,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:10:19,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:10:19,382 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 434 out of 516 [2022-11-16 12:10:19,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 535 transitions, 1675 flow. Second operand has 5 states, 5 states have (on average 439.0) internal successors, (2195), 5 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:19,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:19,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 434 of 516 [2022-11-16 12:10:19,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:20,363 INFO L130 PetriNetUnfolder]: 610/3556 cut-off events. [2022-11-16 12:10:20,363 INFO L131 PetriNetUnfolder]: For 2257/2257 co-relation queries the response was YES. [2022-11-16 12:10:20,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6100 conditions, 3556 events. 610/3556 cut-off events. For 2257/2257 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 31340 event pairs, 248 based on Foata normal form. 33/3326 useless extension candidates. Maximal degree in co-relation 6059. Up to 723 conditions per place. [2022-11-16 12:10:20,378 INFO L137 encePairwiseOnDemand]: 507/516 looper letters, 72 selfloop transitions, 9 changer transitions 6/541 dead transitions. [2022-11-16 12:10:20,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 541 transitions, 1811 flow [2022-11-16 12:10:20,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:10:20,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:10:20,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2679 transitions. [2022-11-16 12:10:20,380 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8653100775193798 [2022-11-16 12:10:20,380 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2679 transitions. [2022-11-16 12:10:20,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2679 transitions. [2022-11-16 12:10:20,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:20,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2679 transitions. [2022-11-16 12:10:20,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 446.5) internal successors, (2679), 6 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:20,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 516.0) internal successors, (3612), 7 states have internal predecessors, (3612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:20,384 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 516.0) internal successors, (3612), 7 states have internal predecessors, (3612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:20,384 INFO L175 Difference]: Start difference. First operand has 547 places, 535 transitions, 1675 flow. Second operand 6 states and 2679 transitions. [2022-11-16 12:10:20,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 541 transitions, 1811 flow [2022-11-16 12:10:20,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 541 transitions, 1750 flow, removed 18 selfloop flow, removed 11 redundant places. [2022-11-16 12:10:20,395 INFO L231 Difference]: Finished difference. Result has 534 places, 518 transitions, 1511 flow [2022-11-16 12:10:20,396 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1493, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1511, PETRI_PLACES=534, PETRI_TRANSITIONS=518} [2022-11-16 12:10:20,397 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 71 predicate places. [2022-11-16 12:10:20,397 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 518 transitions, 1511 flow [2022-11-16 12:10:20,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 439.0) internal successors, (2195), 5 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:20,397 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:20,398 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:20,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-16 12:10:20,398 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:10:20,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:20,399 INFO L85 PathProgramCache]: Analyzing trace with hash 809101461, now seen corresponding path program 2 times [2022-11-16 12:10:20,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:20,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535344414] [2022-11-16 12:10:20,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:20,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:20,610 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:10:20,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:20,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535344414] [2022-11-16 12:10:20,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535344414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:20,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:20,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:10:20,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534575320] [2022-11-16 12:10:20,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:20,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:10:20,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:20,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:10:20,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:10:20,616 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 434 out of 516 [2022-11-16 12:10:20,617 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 518 transitions, 1511 flow. Second operand has 5 states, 5 states have (on average 439.0) internal successors, (2195), 5 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:20,618 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:20,618 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 434 of 516 [2022-11-16 12:10:20,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:21,436 INFO L130 PetriNetUnfolder]: 577/3635 cut-off events. [2022-11-16 12:10:21,436 INFO L131 PetriNetUnfolder]: For 1183/1183 co-relation queries the response was YES. [2022-11-16 12:10:21,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5879 conditions, 3635 events. 577/3635 cut-off events. For 1183/1183 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 31652 event pairs, 216 based on Foata normal form. 2/3378 useless extension candidates. Maximal degree in co-relation 5846. Up to 690 conditions per place. [2022-11-16 12:10:21,457 INFO L137 encePairwiseOnDemand]: 498/516 looper letters, 61 selfloop transitions, 16 changer transitions 16/542 dead transitions. [2022-11-16 12:10:21,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 542 transitions, 1765 flow [2022-11-16 12:10:21,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:10:21,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:10:21,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3121 transitions. [2022-11-16 12:10:21,461 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8640642303433002 [2022-11-16 12:10:21,461 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3121 transitions. [2022-11-16 12:10:21,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3121 transitions. [2022-11-16 12:10:21,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:21,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3121 transitions. [2022-11-16 12:10:21,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 445.85714285714283) internal successors, (3121), 7 states have internal predecessors, (3121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:21,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 516.0) internal successors, (4128), 8 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:21,467 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 516.0) internal successors, (4128), 8 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:21,467 INFO L175 Difference]: Start difference. First operand has 534 places, 518 transitions, 1511 flow. Second operand 7 states and 3121 transitions. [2022-11-16 12:10:21,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 542 transitions, 1765 flow [2022-11-16 12:10:21,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 542 transitions, 1740 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 12:10:21,480 INFO L231 Difference]: Finished difference. Result has 534 places, 509 transitions, 1460 flow [2022-11-16 12:10:21,481 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1466, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1460, PETRI_PLACES=534, PETRI_TRANSITIONS=509} [2022-11-16 12:10:21,481 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 71 predicate places. [2022-11-16 12:10:21,481 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 509 transitions, 1460 flow [2022-11-16 12:10:21,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 439.0) internal successors, (2195), 5 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:21,482 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:21,482 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:21,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-16 12:10:21,482 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:10:21,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:21,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1456859600, now seen corresponding path program 1 times [2022-11-16 12:10:21,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:21,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633402545] [2022-11-16 12:10:21,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:21,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:22,704 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:10:22,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:22,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633402545] [2022-11-16 12:10:22,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633402545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:22,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:22,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 12:10:22,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568911895] [2022-11-16 12:10:22,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:22,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:10:22,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:22,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:10:22,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:10:22,720 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 516 [2022-11-16 12:10:22,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 509 transitions, 1460 flow. Second operand has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:22,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:22,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 516 [2022-11-16 12:10:22,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:30,493 INFO L130 PetriNetUnfolder]: 2061/8516 cut-off events. [2022-11-16 12:10:30,494 INFO L131 PetriNetUnfolder]: For 1303/1304 co-relation queries the response was YES. [2022-11-16 12:10:30,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14924 conditions, 8516 events. 2061/8516 cut-off events. For 1303/1304 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 86003 event pairs, 1132 based on Foata normal form. 1/8127 useless extension candidates. Maximal degree in co-relation 14893. Up to 2421 conditions per place. [2022-11-16 12:10:30,529 INFO L137 encePairwiseOnDemand]: 491/516 looper letters, 424 selfloop transitions, 11 changer transitions 112/964 dead transitions. [2022-11-16 12:10:30,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 964 transitions, 3719 flow [2022-11-16 12:10:30,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-16 12:10:30,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2022-11-16 12:10:30,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 23499 transitions. [2022-11-16 12:10:30,544 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7718762317698069 [2022-11-16 12:10:30,544 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 23499 transitions. [2022-11-16 12:10:30,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 23499 transitions. [2022-11-16 12:10:30,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:30,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 23499 transitions. [2022-11-16 12:10:30,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 398.2881355932203) internal successors, (23499), 59 states have internal predecessors, (23499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:30,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 516.0) internal successors, (30960), 60 states have internal predecessors, (30960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:30,591 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 516.0) internal successors, (30960), 60 states have internal predecessors, (30960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:30,591 INFO L175 Difference]: Start difference. First operand has 534 places, 509 transitions, 1460 flow. Second operand 59 states and 23499 transitions. [2022-11-16 12:10:30,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 964 transitions, 3719 flow [2022-11-16 12:10:30,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 964 transitions, 3691 flow, removed 4 selfloop flow, removed 7 redundant places. [2022-11-16 12:10:30,627 INFO L231 Difference]: Finished difference. Result has 622 places, 509 transitions, 1555 flow [2022-11-16 12:10:30,628 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1432, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=1555, PETRI_PLACES=622, PETRI_TRANSITIONS=509} [2022-11-16 12:10:30,629 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 159 predicate places. [2022-11-16 12:10:30,629 INFO L495 AbstractCegarLoop]: Abstraction has has 622 places, 509 transitions, 1555 flow [2022-11-16 12:10:30,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:30,630 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:30,631 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:30,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-16 12:10:30,631 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:10:30,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:30,632 INFO L85 PathProgramCache]: Analyzing trace with hash 927452134, now seen corresponding path program 2 times [2022-11-16 12:10:30,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:30,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153557031] [2022-11-16 12:10:30,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:30,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:31,689 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:10:31,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:31,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153557031] [2022-11-16 12:10:31,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153557031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:31,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:31,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 12:10:31,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038312481] [2022-11-16 12:10:31,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:31,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:10:31,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:31,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:10:31,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:10:31,699 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 516 [2022-11-16 12:10:31,704 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 509 transitions, 1555 flow. Second operand has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:31,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:31,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 516 [2022-11-16 12:10:31,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:39,316 INFO L130 PetriNetUnfolder]: 2057/8655 cut-off events. [2022-11-16 12:10:39,317 INFO L131 PetriNetUnfolder]: For 6536/6536 co-relation queries the response was YES. [2022-11-16 12:10:39,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18066 conditions, 8655 events. 2057/8655 cut-off events. For 6536/6536 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 86864 event pairs, 1151 based on Foata normal form. 1/8223 useless extension candidates. Maximal degree in co-relation 17991. Up to 2408 conditions per place. [2022-11-16 12:10:39,414 INFO L137 encePairwiseOnDemand]: 491/516 looper letters, 423 selfloop transitions, 11 changer transitions 105/956 dead transitions. [2022-11-16 12:10:39,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 634 places, 956 transitions, 4439 flow [2022-11-16 12:10:39,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-16 12:10:39,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2022-11-16 12:10:39,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 23491 transitions. [2022-11-16 12:10:39,427 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7716134542110104 [2022-11-16 12:10:39,427 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 23491 transitions. [2022-11-16 12:10:39,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 23491 transitions. [2022-11-16 12:10:39,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:39,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 23491 transitions. [2022-11-16 12:10:39,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 398.1525423728813) internal successors, (23491), 59 states have internal predecessors, (23491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:39,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 516.0) internal successors, (30960), 60 states have internal predecessors, (30960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:39,467 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 516.0) internal successors, (30960), 60 states have internal predecessors, (30960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:39,468 INFO L175 Difference]: Start difference. First operand has 622 places, 509 transitions, 1555 flow. Second operand 59 states and 23491 transitions. [2022-11-16 12:10:39,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 634 places, 956 transitions, 4439 flow [2022-11-16 12:10:39,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 956 transitions, 3751 flow, removed 180 selfloop flow, removed 54 redundant places. [2022-11-16 12:10:39,554 INFO L231 Difference]: Finished difference. Result has 627 places, 509 transitions, 1571 flow [2022-11-16 12:10:39,555 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1448, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=1571, PETRI_PLACES=627, PETRI_TRANSITIONS=509} [2022-11-16 12:10:39,555 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 164 predicate places. [2022-11-16 12:10:39,556 INFO L495 AbstractCegarLoop]: Abstraction has has 627 places, 509 transitions, 1571 flow [2022-11-16 12:10:39,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:39,557 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:39,557 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:39,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-16 12:10:39,557 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:10:39,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:39,558 INFO L85 PathProgramCache]: Analyzing trace with hash 500917450, now seen corresponding path program 3 times [2022-11-16 12:10:39,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:39,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140326987] [2022-11-16 12:10:39,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:39,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:40,640 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:10:40,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:40,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140326987] [2022-11-16 12:10:40,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140326987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:40,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:40,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 12:10:40,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437383663] [2022-11-16 12:10:40,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:40,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:10:40,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:40,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:10:40,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:10:40,648 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 516 [2022-11-16 12:10:40,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 627 places, 509 transitions, 1571 flow. Second operand has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:40,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:40,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 516 [2022-11-16 12:10:40,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:48,004 INFO L130 PetriNetUnfolder]: 2115/8839 cut-off events. [2022-11-16 12:10:48,004 INFO L131 PetriNetUnfolder]: For 9156/9156 co-relation queries the response was YES. [2022-11-16 12:10:48,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19001 conditions, 8839 events. 2115/8839 cut-off events. For 9156/9156 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 90336 event pairs, 1190 based on Foata normal form. 1/8449 useless extension candidates. Maximal degree in co-relation 18922. Up to 2421 conditions per place. [2022-11-16 12:10:48,102 INFO L137 encePairwiseOnDemand]: 491/516 looper letters, 373 selfloop transitions, 15 changer transitions 104/909 dead transitions. [2022-11-16 12:10:48,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 636 places, 909 transitions, 4475 flow [2022-11-16 12:10:48,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-16 12:10:48,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-11-16 12:10:48,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 22277 transitions. [2022-11-16 12:10:48,123 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.77093715393134 [2022-11-16 12:10:48,123 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 22277 transitions. [2022-11-16 12:10:48,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 22277 transitions. [2022-11-16 12:10:48,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:48,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 22277 transitions. [2022-11-16 12:10:48,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 397.80357142857144) internal successors, (22277), 56 states have internal predecessors, (22277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:48,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:48,167 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:48,167 INFO L175 Difference]: Start difference. First operand has 627 places, 509 transitions, 1571 flow. Second operand 56 states and 22277 transitions. [2022-11-16 12:10:48,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 636 places, 909 transitions, 4475 flow [2022-11-16 12:10:48,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 582 places, 909 transitions, 3770 flow, removed 187 selfloop flow, removed 54 redundant places. [2022-11-16 12:10:48,211 INFO L231 Difference]: Finished difference. Result has 627 places, 514 transitions, 1632 flow [2022-11-16 12:10:48,211 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1464, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=1632, PETRI_PLACES=627, PETRI_TRANSITIONS=514} [2022-11-16 12:10:48,212 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 164 predicate places. [2022-11-16 12:10:48,212 INFO L495 AbstractCegarLoop]: Abstraction has has 627 places, 514 transitions, 1632 flow [2022-11-16 12:10:48,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:48,213 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:48,214 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:48,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-16 12:10:48,214 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:10:48,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:48,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1350393674, now seen corresponding path program 4 times [2022-11-16 12:10:48,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:48,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128470871] [2022-11-16 12:10:48,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:48,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:49,245 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:10:49,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:49,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128470871] [2022-11-16 12:10:49,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128470871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:49,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:49,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 12:10:49,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983689207] [2022-11-16 12:10:49,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:49,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:10:49,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:49,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:10:49,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:10:49,253 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 516 [2022-11-16 12:10:49,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 627 places, 514 transitions, 1632 flow. Second operand has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:49,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:49,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 516 [2022-11-16 12:10:49,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:56,626 INFO L130 PetriNetUnfolder]: 2187/9325 cut-off events. [2022-11-16 12:10:56,626 INFO L131 PetriNetUnfolder]: For 11070/11070 co-relation queries the response was YES. [2022-11-16 12:10:56,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20701 conditions, 9325 events. 2187/9325 cut-off events. For 11070/11070 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 96028 event pairs, 1217 based on Foata normal form. 1/8874 useless extension candidates. Maximal degree in co-relation 20620. Up to 2408 conditions per place. [2022-11-16 12:10:56,746 INFO L137 encePairwiseOnDemand]: 491/516 looper letters, 400 selfloop transitions, 16 changer transitions 102/935 dead transitions. [2022-11-16 12:10:56,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 640 places, 935 transitions, 4847 flow [2022-11-16 12:10:56,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-16 12:10:56,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-11-16 12:10:56,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 22274 transitions. [2022-11-16 12:10:56,764 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7708333333333334 [2022-11-16 12:10:56,764 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 22274 transitions. [2022-11-16 12:10:56,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 22274 transitions. [2022-11-16 12:10:56,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:56,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 22274 transitions. [2022-11-16 12:10:56,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 397.75) internal successors, (22274), 56 states have internal predecessors, (22274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:56,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:56,807 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:56,807 INFO L175 Difference]: Start difference. First operand has 627 places, 514 transitions, 1632 flow. Second operand 56 states and 22274 transitions. [2022-11-16 12:10:56,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 640 places, 935 transitions, 4847 flow [2022-11-16 12:10:56,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 935 transitions, 4331 flow, removed 186 selfloop flow, removed 44 redundant places. [2022-11-16 12:10:56,922 INFO L231 Difference]: Finished difference. Result has 641 places, 519 transitions, 1704 flow [2022-11-16 12:10:56,923 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=1704, PETRI_PLACES=641, PETRI_TRANSITIONS=519} [2022-11-16 12:10:56,923 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 178 predicate places. [2022-11-16 12:10:56,924 INFO L495 AbstractCegarLoop]: Abstraction has has 641 places, 519 transitions, 1704 flow [2022-11-16 12:10:56,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:56,925 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:56,925 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:56,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-16 12:10:56,926 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:10:56,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:56,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1997414870, now seen corresponding path program 5 times [2022-11-16 12:10:56,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:56,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312319639] [2022-11-16 12:10:56,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:56,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:56,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:57,915 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:10:57,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:57,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312319639] [2022-11-16 12:10:57,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312319639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:57,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:57,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 12:10:57,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287523120] [2022-11-16 12:10:57,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:57,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:10:57,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:57,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:10:57,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:10:57,922 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 516 [2022-11-16 12:10:57,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 641 places, 519 transitions, 1704 flow. Second operand has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:57,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:57,927 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 516 [2022-11-16 12:10:57,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:11:05,824 INFO L130 PetriNetUnfolder]: 2267/9509 cut-off events. [2022-11-16 12:11:05,824 INFO L131 PetriNetUnfolder]: For 14339/14339 co-relation queries the response was YES. [2022-11-16 12:11:05,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21999 conditions, 9509 events. 2267/9509 cut-off events. For 14339/14339 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 98723 event pairs, 1242 based on Foata normal form. 1/9100 useless extension candidates. Maximal degree in co-relation 21912. Up to 2421 conditions per place. [2022-11-16 12:11:05,887 INFO L137 encePairwiseOnDemand]: 491/516 looper letters, 381 selfloop transitions, 18 changer transitions 108/924 dead transitions. [2022-11-16 12:11:05,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 654 places, 924 transitions, 5022 flow [2022-11-16 12:11:05,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-16 12:11:05,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-11-16 12:11:05,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 22265 transitions. [2022-11-16 12:11:05,902 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7705218715393134 [2022-11-16 12:11:05,902 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 22265 transitions. [2022-11-16 12:11:05,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 22265 transitions. [2022-11-16 12:11:05,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:11:05,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 22265 transitions. [2022-11-16 12:11:05,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 397.5892857142857) internal successors, (22265), 56 states have internal predecessors, (22265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:05,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:05,936 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:05,936 INFO L175 Difference]: Start difference. First operand has 641 places, 519 transitions, 1704 flow. Second operand 56 states and 22265 transitions. [2022-11-16 12:11:05,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 654 places, 924 transitions, 5022 flow [2022-11-16 12:11:05,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 924 transitions, 4498 flow, removed 190 selfloop flow, removed 44 redundant places. [2022-11-16 12:11:06,001 INFO L231 Difference]: Finished difference. Result has 657 places, 525 transitions, 1826 flow [2022-11-16 12:11:06,001 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1608, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=1826, PETRI_PLACES=657, PETRI_TRANSITIONS=525} [2022-11-16 12:11:06,002 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 194 predicate places. [2022-11-16 12:11:06,002 INFO L495 AbstractCegarLoop]: Abstraction has has 657 places, 525 transitions, 1826 flow [2022-11-16 12:11:06,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:06,003 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:11:06,003 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:11:06,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-16 12:11:06,003 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:11:06,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:06,004 INFO L85 PathProgramCache]: Analyzing trace with hash -853340994, now seen corresponding path program 6 times [2022-11-16 12:11:06,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:06,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894624164] [2022-11-16 12:11:06,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:06,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:06,892 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:11:06,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:06,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894624164] [2022-11-16 12:11:06,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894624164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:11:06,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:11:06,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 12:11:06,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431037609] [2022-11-16 12:11:06,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:11:06,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:11:06,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:06,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:11:06,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:11:06,900 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 516 [2022-11-16 12:11:06,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 657 places, 525 transitions, 1826 flow. Second operand has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:06,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:11:06,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 516 [2022-11-16 12:11:06,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:11:15,148 INFO L130 PetriNetUnfolder]: 2327/9638 cut-off events. [2022-11-16 12:11:15,148 INFO L131 PetriNetUnfolder]: For 25588/25588 co-relation queries the response was YES. [2022-11-16 12:11:15,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24670 conditions, 9638 events. 2327/9638 cut-off events. For 25588/25588 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 99300 event pairs, 1211 based on Foata normal form. 1/9228 useless extension candidates. Maximal degree in co-relation 24575. Up to 2408 conditions per place. [2022-11-16 12:11:15,269 INFO L137 encePairwiseOnDemand]: 491/516 looper letters, 411 selfloop transitions, 19 changer transitions 106/953 dead transitions. [2022-11-16 12:11:15,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 670 places, 953 transitions, 6050 flow [2022-11-16 12:11:15,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-16 12:11:15,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-11-16 12:11:15,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 22263 transitions. [2022-11-16 12:11:15,282 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.770452657807309 [2022-11-16 12:11:15,282 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 22263 transitions. [2022-11-16 12:11:15,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 22263 transitions. [2022-11-16 12:11:15,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:11:15,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 22263 transitions. [2022-11-16 12:11:15,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 397.55357142857144) internal successors, (22263), 56 states have internal predecessors, (22263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:15,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:15,318 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:15,318 INFO L175 Difference]: Start difference. First operand has 657 places, 525 transitions, 1826 flow. Second operand 56 states and 22263 transitions. [2022-11-16 12:11:15,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 670 places, 953 transitions, 6050 flow [2022-11-16 12:11:15,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 630 places, 953 transitions, 5372 flow, removed 264 selfloop flow, removed 40 redundant places. [2022-11-16 12:11:15,420 INFO L231 Difference]: Finished difference. Result has 677 places, 531 transitions, 1949 flow [2022-11-16 12:11:15,420 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1729, PETRI_DIFFERENCE_MINUEND_PLACES=575, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=1949, PETRI_PLACES=677, PETRI_TRANSITIONS=531} [2022-11-16 12:11:15,421 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 214 predicate places. [2022-11-16 12:11:15,421 INFO L495 AbstractCegarLoop]: Abstraction has has 677 places, 531 transitions, 1949 flow [2022-11-16 12:11:15,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:15,422 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:11:15,423 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:11:15,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-16 12:11:15,423 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:11:15,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:15,424 INFO L85 PathProgramCache]: Analyzing trace with hash 8316518, now seen corresponding path program 7 times [2022-11-16 12:11:15,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:15,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554778427] [2022-11-16 12:11:15,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:15,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:16,528 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:11:16,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:16,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554778427] [2022-11-16 12:11:16,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554778427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:11:16,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:11:16,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 12:11:16,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267238993] [2022-11-16 12:11:16,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:11:16,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:11:16,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:16,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:11:16,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:11:16,536 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 516 [2022-11-16 12:11:16,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 677 places, 531 transitions, 1949 flow. Second operand has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:16,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:11:16,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 516 [2022-11-16 12:11:16,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:11:25,246 INFO L130 PetriNetUnfolder]: 2456/10120 cut-off events. [2022-11-16 12:11:25,247 INFO L131 PetriNetUnfolder]: For 37101/37101 co-relation queries the response was YES. [2022-11-16 12:11:25,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27644 conditions, 10120 events. 2456/10120 cut-off events. For 37101/37101 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 105619 event pairs, 1339 based on Foata normal form. 1/9694 useless extension candidates. Maximal degree in co-relation 27537. Up to 2421 conditions per place. [2022-11-16 12:11:25,537 INFO L137 encePairwiseOnDemand]: 491/516 looper letters, 390 selfloop transitions, 19 changer transitions 112/938 dead transitions. [2022-11-16 12:11:25,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 690 places, 938 transitions, 6475 flow [2022-11-16 12:11:25,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-16 12:11:25,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-11-16 12:11:25,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 22253 transitions. [2022-11-16 12:11:25,570 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7701065891472868 [2022-11-16 12:11:25,570 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 22253 transitions. [2022-11-16 12:11:25,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 22253 transitions. [2022-11-16 12:11:25,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:11:25,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 22253 transitions. [2022-11-16 12:11:25,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 397.375) internal successors, (22253), 56 states have internal predecessors, (22253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:25,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:25,612 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:25,612 INFO L175 Difference]: Start difference. First operand has 677 places, 531 transitions, 1949 flow. Second operand 56 states and 22253 transitions. [2022-11-16 12:11:25,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 690 places, 938 transitions, 6475 flow [2022-11-16 12:11:25,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 652 places, 938 transitions, 5870 flow, removed 228 selfloop flow, removed 38 redundant places. [2022-11-16 12:11:25,749 INFO L231 Difference]: Finished difference. Result has 701 places, 538 transitions, 2144 flow [2022-11-16 12:11:25,750 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1858, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=2144, PETRI_PLACES=701, PETRI_TRANSITIONS=538} [2022-11-16 12:11:25,750 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 238 predicate places. [2022-11-16 12:11:25,751 INFO L495 AbstractCegarLoop]: Abstraction has has 701 places, 538 transitions, 2144 flow [2022-11-16 12:11:25,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:25,752 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:11:25,752 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:11:25,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-11-16 12:11:25,753 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:11:25,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:25,753 INFO L85 PathProgramCache]: Analyzing trace with hash 302267612, now seen corresponding path program 8 times [2022-11-16 12:11:25,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:25,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470389308] [2022-11-16 12:11:25,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:25,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:26,943 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:11:26,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:26,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470389308] [2022-11-16 12:11:26,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470389308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:11:26,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:11:26,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 12:11:26,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13092677] [2022-11-16 12:11:26,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:11:26,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:11:26,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:26,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:11:26,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:11:26,951 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 516 [2022-11-16 12:11:26,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 701 places, 538 transitions, 2144 flow. Second operand has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:26,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:11:26,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 516 [2022-11-16 12:11:26,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:11:35,871 INFO L130 PetriNetUnfolder]: 2563/10590 cut-off events. [2022-11-16 12:11:35,871 INFO L131 PetriNetUnfolder]: For 64679/64679 co-relation queries the response was YES. [2022-11-16 12:11:35,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32461 conditions, 10590 events. 2563/10590 cut-off events. For 64679/64679 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 110912 event pairs, 1377 based on Foata normal form. 1/10121 useless extension candidates. Maximal degree in co-relation 32338. Up to 2408 conditions per place. [2022-11-16 12:11:35,976 INFO L137 encePairwiseOnDemand]: 491/516 looper letters, 421 selfloop transitions, 20 changer transitions 110/968 dead transitions. [2022-11-16 12:11:35,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 714 places, 968 transitions, 7953 flow [2022-11-16 12:11:35,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-16 12:11:35,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-11-16 12:11:35,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 22252 transitions. [2022-11-16 12:11:35,992 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7700719822812846 [2022-11-16 12:11:35,993 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 22252 transitions. [2022-11-16 12:11:35,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 22252 transitions. [2022-11-16 12:11:35,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:11:35,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 22252 transitions. [2022-11-16 12:11:36,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 397.35714285714283) internal successors, (22252), 56 states have internal predecessors, (22252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:36,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:36,026 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:36,027 INFO L175 Difference]: Start difference. First operand has 701 places, 538 transitions, 2144 flow. Second operand 56 states and 22252 transitions. [2022-11-16 12:11:36,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 714 places, 968 transitions, 7953 flow [2022-11-16 12:11:36,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 676 places, 968 transitions, 7033 flow, removed 383 selfloop flow, removed 38 redundant places. [2022-11-16 12:11:36,323 INFO L231 Difference]: Finished difference. Result has 725 places, 545 transitions, 2328 flow [2022-11-16 12:11:36,324 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=2032, PETRI_DIFFERENCE_MINUEND_PLACES=621, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=2328, PETRI_PLACES=725, PETRI_TRANSITIONS=545} [2022-11-16 12:11:36,324 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 262 predicate places. [2022-11-16 12:11:36,324 INFO L495 AbstractCegarLoop]: Abstraction has has 725 places, 545 transitions, 2328 flow [2022-11-16 12:11:36,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:36,325 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:11:36,325 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:11:36,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-16 12:11:36,325 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:11:36,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:36,326 INFO L85 PathProgramCache]: Analyzing trace with hash -492011104, now seen corresponding path program 9 times [2022-11-16 12:11:36,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:36,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923398523] [2022-11-16 12:11:36,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:36,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:37,230 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:11:37,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:37,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923398523] [2022-11-16 12:11:37,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923398523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:11:37,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:11:37,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 12:11:37,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112586618] [2022-11-16 12:11:37,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:11:37,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:11:37,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:37,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:11:37,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:11:37,237 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 516 [2022-11-16 12:11:37,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 725 places, 545 transitions, 2328 flow. Second operand has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:37,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:11:37,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 516 [2022-11-16 12:11:37,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:11:46,693 INFO L130 PetriNetUnfolder]: 2683/10780 cut-off events. [2022-11-16 12:11:46,693 INFO L131 PetriNetUnfolder]: For 91208/91212 co-relation queries the response was YES. [2022-11-16 12:11:46,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36489 conditions, 10780 events. 2683/10780 cut-off events. For 91208/91212 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 113440 event pairs, 1492 based on Foata normal form. 1/10360 useless extension candidates. Maximal degree in co-relation 36350. Up to 2421 conditions per place. [2022-11-16 12:11:46,814 INFO L137 encePairwiseOnDemand]: 491/516 looper letters, 402 selfloop transitions, 18 changer transitions 116/953 dead transitions. [2022-11-16 12:11:46,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 738 places, 953 transitions, 8504 flow [2022-11-16 12:11:46,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-16 12:11:46,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-11-16 12:11:46,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 22246 transitions. [2022-11-16 12:11:46,828 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7698643410852714 [2022-11-16 12:11:46,828 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 22246 transitions. [2022-11-16 12:11:46,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 22246 transitions. [2022-11-16 12:11:46,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:11:46,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 22246 transitions. [2022-11-16 12:11:46,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 397.25) internal successors, (22246), 56 states have internal predecessors, (22246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:46,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:46,861 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:46,861 INFO L175 Difference]: Start difference. First operand has 725 places, 545 transitions, 2328 flow. Second operand 56 states and 22246 transitions. [2022-11-16 12:11:46,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 738 places, 953 transitions, 8504 flow [2022-11-16 12:11:47,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 699 places, 953 transitions, 7524 flow, removed 414 selfloop flow, removed 39 redundant places. [2022-11-16 12:11:47,158 INFO L231 Difference]: Finished difference. Result has 750 places, 553 transitions, 2567 flow [2022-11-16 12:11:47,159 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=2210, PETRI_DIFFERENCE_MINUEND_PLACES=644, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=2567, PETRI_PLACES=750, PETRI_TRANSITIONS=553} [2022-11-16 12:11:47,159 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 287 predicate places. [2022-11-16 12:11:47,159 INFO L495 AbstractCegarLoop]: Abstraction has has 750 places, 553 transitions, 2567 flow [2022-11-16 12:11:47,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:47,161 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:11:47,161 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:11:47,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-16 12:11:47,161 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:11:47,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:47,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1474960058, now seen corresponding path program 10 times [2022-11-16 12:11:47,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:47,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55952178] [2022-11-16 12:11:47,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:47,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:47,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:48,291 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:11:48,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:48,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55952178] [2022-11-16 12:11:48,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55952178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:11:48,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:11:48,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 12:11:48,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731217381] [2022-11-16 12:11:48,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:11:48,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:11:48,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:48,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:11:48,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:11:48,299 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 516 [2022-11-16 12:11:48,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 750 places, 553 transitions, 2567 flow. Second operand has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:48,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:11:48,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 516 [2022-11-16 12:11:48,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:11:58,161 INFO L130 PetriNetUnfolder]: 2819/11484 cut-off events. [2022-11-16 12:11:58,161 INFO L131 PetriNetUnfolder]: For 131467/131471 co-relation queries the response was YES. [2022-11-16 12:11:58,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42505 conditions, 11484 events. 2819/11484 cut-off events. For 131467/131471 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 121673 event pairs, 1505 based on Foata normal form. 1/11002 useless extension candidates. Maximal degree in co-relation 42349. Up to 2408 conditions per place. [2022-11-16 12:11:58,325 INFO L137 encePairwiseOnDemand]: 491/516 looper letters, 431 selfloop transitions, 19 changer transitions 114/981 dead transitions. [2022-11-16 12:11:58,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 763 places, 981 transitions, 9990 flow [2022-11-16 12:11:58,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-16 12:11:58,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-11-16 12:11:58,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 22245 transitions. [2022-11-16 12:11:58,345 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7698297342192691 [2022-11-16 12:11:58,345 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 22245 transitions. [2022-11-16 12:11:58,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 22245 transitions. [2022-11-16 12:11:58,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:11:58,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 22245 transitions. [2022-11-16 12:11:58,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 397.23214285714283) internal successors, (22245), 56 states have internal predecessors, (22245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:58,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:58,395 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:58,395 INFO L175 Difference]: Start difference. First operand has 750 places, 553 transitions, 2567 flow. Second operand 56 states and 22245 transitions. [2022-11-16 12:11:58,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 763 places, 981 transitions, 9990 flow [2022-11-16 12:11:58,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 724 places, 981 transitions, 8691 flow, removed 603 selfloop flow, removed 39 redundant places. [2022-11-16 12:11:58,851 INFO L231 Difference]: Finished difference. Result has 775 places, 561 transitions, 2793 flow [2022-11-16 12:11:58,851 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=2426, PETRI_DIFFERENCE_MINUEND_PLACES=669, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=2793, PETRI_PLACES=775, PETRI_TRANSITIONS=561} [2022-11-16 12:11:58,852 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 312 predicate places. [2022-11-16 12:11:58,852 INFO L495 AbstractCegarLoop]: Abstraction has has 775 places, 561 transitions, 2793 flow [2022-11-16 12:11:58,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:58,854 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:11:58,854 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:11:58,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-16 12:11:58,854 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:11:58,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:58,855 INFO L85 PathProgramCache]: Analyzing trace with hash -2063219922, now seen corresponding path program 11 times [2022-11-16 12:11:58,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:58,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311229272] [2022-11-16 12:11:58,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:58,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:59,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:59,921 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:11:59,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:59,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311229272] [2022-11-16 12:11:59,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311229272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:11:59,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:11:59,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 12:11:59,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311913436] [2022-11-16 12:11:59,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:11:59,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:11:59,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:59,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:11:59,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:11:59,930 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 516 [2022-11-16 12:11:59,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 775 places, 561 transitions, 2793 flow. Second operand has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:59,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:11:59,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 516 [2022-11-16 12:11:59,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:12:10,089 INFO L130 PetriNetUnfolder]: 2980/11748 cut-off events. [2022-11-16 12:12:10,089 INFO L131 PetriNetUnfolder]: For 172550/172554 co-relation queries the response was YES. [2022-11-16 12:12:10,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47795 conditions, 11748 events. 2980/11748 cut-off events. For 172550/172554 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 125366 event pairs, 1631 based on Foata normal form. 1/11321 useless extension candidates. Maximal degree in co-relation 47623. Up to 2421 conditions per place. [2022-11-16 12:12:10,258 INFO L137 encePairwiseOnDemand]: 491/516 looper letters, 398 selfloop transitions, 20 changer transitions 120/955 dead transitions. [2022-11-16 12:12:10,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 788 places, 955 transitions, 10361 flow [2022-11-16 12:12:10,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-16 12:12:10,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-11-16 12:12:10,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 22234 transitions. [2022-11-16 12:12:10,272 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7694490586932448 [2022-11-16 12:12:10,272 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 22234 transitions. [2022-11-16 12:12:10,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 22234 transitions. [2022-11-16 12:12:10,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:12:10,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 22234 transitions. [2022-11-16 12:12:10,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 397.0357142857143) internal successors, (22234), 56 states have internal predecessors, (22234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:12:10,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:12:10,315 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:12:10,315 INFO L175 Difference]: Start difference. First operand has 775 places, 561 transitions, 2793 flow. Second operand 56 states and 22234 transitions. [2022-11-16 12:12:10,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 788 places, 955 transitions, 10361 flow [2022-11-16 12:12:11,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 748 places, 955 transitions, 9016 flow, removed 626 selfloop flow, removed 40 redundant places. [2022-11-16 12:12:11,445 INFO L231 Difference]: Finished difference. Result has 800 places, 570 transitions, 3061 flow [2022-11-16 12:12:11,445 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=2646, PETRI_DIFFERENCE_MINUEND_PLACES=693, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=3061, PETRI_PLACES=800, PETRI_TRANSITIONS=570} [2022-11-16 12:12:11,446 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 337 predicate places. [2022-11-16 12:12:11,446 INFO L495 AbstractCegarLoop]: Abstraction has has 800 places, 570 transitions, 3061 flow [2022-11-16 12:12:11,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:12:11,447 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:12:11,447 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:12:11,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-16 12:12:11,448 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:12:11,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:11,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1375802368, now seen corresponding path program 12 times [2022-11-16 12:12:11,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:11,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68037403] [2022-11-16 12:12:11,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:11,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:12,681 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 12:12:12,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:12,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68037403] [2022-11-16 12:12:12,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68037403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:12:12,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:12:12,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 12:12:12,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013101808] [2022-11-16 12:12:12,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:12:12,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:12:12,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:12,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:12:12,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:12:12,688 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 516 [2022-11-16 12:12:12,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 800 places, 570 transitions, 3061 flow. Second operand has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:12:12,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:12:12,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 516 [2022-11-16 12:12:12,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand