./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_5e63a076-33a7-4729-9a91-9e8b894d8eab/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e63a076-33a7-4729-9a91-9e8b894d8eab/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e63a076-33a7-4729-9a91-9e8b894d8eab/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e63a076-33a7-4729-9a91-9e8b894d8eab/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e63a076-33a7-4729-9a91-9e8b894d8eab/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e63a076-33a7-4729-9a91-9e8b894d8eab/bin/uautomizer-vX5HgA9Q3a --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 cfa53b3a6eade068c4346d28766037c8d26fae61c62dd4c8f6fc2f9d68567d2c --- 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-b5237d8 [2022-11-21 16:32:43,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:32:43,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:32:43,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:32:43,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:32:43,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:32:43,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:32:43,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:32:43,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:32:43,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:32:43,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:32:43,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:32:43,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:32:43,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:32:43,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:32:43,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:32:43,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:32:43,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:32:43,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:32:43,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:32:43,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:32:43,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:32:43,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:32:43,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:32:43,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:32:43,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:32:43,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:32:43,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:32:43,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:32:43,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:32:43,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:32:43,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:32:43,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:32:43,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:32:43,723 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:32:43,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:32:43,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:32:43,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:32:43,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:32:43,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:32:43,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:32:43,727 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e63a076-33a7-4729-9a91-9e8b894d8eab/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 16:32:43,746 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:32:43,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:32:43,747 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:32:43,747 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:32:43,748 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:32:43,748 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:32:43,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:32:43,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:32:43,750 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:32:43,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:32:43,750 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:32:43,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:32:43,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:32:43,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:32:43,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:32:43,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:32:43,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:32:43,752 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:32:43,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:32:43,753 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:32:43,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:32:43,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:32:43,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:32:43,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:32:43,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:32:43,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:32:43,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:32:43,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:32:43,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:32:43,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:32:43,756 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:32:43,756 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:32:43,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:32:43,756 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_5e63a076-33a7-4729-9a91-9e8b894d8eab/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e63a076-33a7-4729-9a91-9e8b894d8eab/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cfa53b3a6eade068c4346d28766037c8d26fae61c62dd4c8f6fc2f9d68567d2c [2022-11-21 16:32:43,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:32:44,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:32:44,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:32:44,028 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:32:44,029 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:32:44,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e63a076-33a7-4729-9a91-9e8b894d8eab/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c [2022-11-21 16:32:47,096 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:32:47,406 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:32:47,407 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e63a076-33a7-4729-9a91-9e8b894d8eab/sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c [2022-11-21 16:32:47,414 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e63a076-33a7-4729-9a91-9e8b894d8eab/bin/uautomizer-vX5HgA9Q3a/data/53e32e58d/6a36948517314928bd79e148eb378c1b/FLAG3a3cc39cb [2022-11-21 16:32:47,429 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e63a076-33a7-4729-9a91-9e8b894d8eab/bin/uautomizer-vX5HgA9Q3a/data/53e32e58d/6a36948517314928bd79e148eb378c1b [2022-11-21 16:32:47,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:32:47,433 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:32:47,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:32:47,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:32:47,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:32:47,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:32:47" (1/1) ... [2022-11-21 16:32:47,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@738642ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:47, skipping insertion in model container [2022-11-21 16:32:47,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:32:47" (1/1) ... [2022-11-21 16:32:47,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:32:47,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:32:47,652 WARN L237 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_5e63a076-33a7-4729-9a91-9e8b894d8eab/sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c[2303,2316] [2022-11-21 16:32:47,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:32:47,681 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:32:47,727 WARN L237 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_5e63a076-33a7-4729-9a91-9e8b894d8eab/sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c[2303,2316] [2022-11-21 16:32:47,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:32:47,748 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:32:47,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:47 WrapperNode [2022-11-21 16:32:47,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:32:47,751 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:32:47,751 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:32:47,751 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:32:47,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:47" (1/1) ... [2022-11-21 16:32:47,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:47" (1/1) ... [2022-11-21 16:32:47,816 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 122 [2022-11-21 16:32:47,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:32:47,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:32:47,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:32:47,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:32:47,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:47" (1/1) ... [2022-11-21 16:32:47,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:47" (1/1) ... [2022-11-21 16:32:47,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:47" (1/1) ... [2022-11-21 16:32:47,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:47" (1/1) ... [2022-11-21 16:32:47,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:47" (1/1) ... [2022-11-21 16:32:47,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:47" (1/1) ... [2022-11-21 16:32:47,863 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:47" (1/1) ... [2022-11-21 16:32:47,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:47" (1/1) ... [2022-11-21 16:32:47,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:32:47,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:32:47,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:32:47,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:32:47,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:47" (1/1) ... [2022-11-21 16:32:47,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:32:47,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e63a076-33a7-4729-9a91-9e8b894d8eab/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:32:47,911 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e63a076-33a7-4729-9a91-9e8b894d8eab/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:32:47,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e63a076-33a7-4729-9a91-9e8b894d8eab/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:32:47,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:32:47,959 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 16:32:47,959 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 16:32:47,959 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 16:32:47,959 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 16:32:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:32:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:32:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:32:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:32:47,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:32:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:32:47,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:32:47,962 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 16:32:48,056 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:32:48,057 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:32:48,339 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:32:48,371 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:32:48,372 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 16:32:48,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:32:48 BoogieIcfgContainer [2022-11-21 16:32:48,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:32:48,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:32:48,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:32:48,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:32:48,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:32:47" (1/3) ... [2022-11-21 16:32:48,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49edc523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:32:48, skipping insertion in model container [2022-11-21 16:32:48,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:47" (2/3) ... [2022-11-21 16:32:48,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49edc523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:32:48, skipping insertion in model container [2022-11-21 16:32:48,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:32:48" (3/3) ... [2022-11-21 16:32:48,398 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-symm.wvr.c [2022-11-21 16:32:48,415 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:32:48,430 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:32:48,430 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:32:48,430 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:32:48,587 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 16:32:48,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 166 transitions, 348 flow [2022-11-21 16:32:48,711 INFO L130 PetriNetUnfolder]: 11/164 cut-off events. [2022-11-21 16:32:48,711 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 16:32:48,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 164 events. 11/164 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 240 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2022-11-21 16:32:48,724 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 166 transitions, 348 flow [2022-11-21 16:32:48,730 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 155 transitions, 322 flow [2022-11-21 16:32:48,741 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:32:48,749 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;@6796e0ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:32:48,749 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-21 16:32:48,803 INFO L130 PetriNetUnfolder]: 11/154 cut-off events. [2022-11-21 16:32:48,804 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 16:32:48,804 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:32:48,805 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] [2022-11-21 16:32:48,806 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:32:48,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:48,815 INFO L85 PathProgramCache]: Analyzing trace with hash 722694995, now seen corresponding path program 1 times [2022-11-21 16:32:48,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:48,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656372383] [2022-11-21 16:32:48,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:48,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:49,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:49,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:49,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:49,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656372383] [2022-11-21 16:32:49,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656372383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:32:49,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:32:49,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:32:49,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953295277] [2022-11-21 16:32:49,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:32:49,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:32:49,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:49,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:32:49,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:32:49,895 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 166 [2022-11-21 16:32:49,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 155 transitions, 322 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:49,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:32:49,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 166 [2022-11-21 16:32:49,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:32:50,798 INFO L130 PetriNetUnfolder]: 153/1009 cut-off events. [2022-11-21 16:32:50,798 INFO L131 PetriNetUnfolder]: For 102/102 co-relation queries the response was YES. [2022-11-21 16:32:50,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1473 conditions, 1009 events. 153/1009 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7064 event pairs, 53 based on Foata normal form. 54/962 useless extension candidates. Maximal degree in co-relation 1118. Up to 135 conditions per place. [2022-11-21 16:32:50,816 INFO L137 encePairwiseOnDemand]: 136/166 looper letters, 106 selfloop transitions, 14 changer transitions 41/268 dead transitions. [2022-11-21 16:32:50,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 268 transitions, 903 flow [2022-11-21 16:32:50,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 16:32:50,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-21 16:32:50,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2655 transitions. [2022-11-21 16:32:50,845 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7616179001721171 [2022-11-21 16:32:50,846 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2655 transitions. [2022-11-21 16:32:50,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2655 transitions. [2022-11-21 16:32:50,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:32:50,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2655 transitions. [2022-11-21 16:32:50,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 126.42857142857143) internal successors, (2655), 21 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:50,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 166.0) internal successors, (3652), 22 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:50,885 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 166.0) internal successors, (3652), 22 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:50,887 INFO L175 Difference]: Start difference. First operand has 151 places, 155 transitions, 322 flow. Second operand 21 states and 2655 transitions. [2022-11-21 16:32:50,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 268 transitions, 903 flow [2022-11-21 16:32:50,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 268 transitions, 873 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 16:32:50,903 INFO L231 Difference]: Finished difference. Result has 182 places, 157 transitions, 434 flow [2022-11-21 16:32:50,905 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=434, PETRI_PLACES=182, PETRI_TRANSITIONS=157} [2022-11-21 16:32:50,912 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 31 predicate places. [2022-11-21 16:32:50,912 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 157 transitions, 434 flow [2022-11-21 16:32:50,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:50,913 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:32:50,913 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] [2022-11-21 16:32:50,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:32:50,914 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:32:50,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:50,916 INFO L85 PathProgramCache]: Analyzing trace with hash 758306373, now seen corresponding path program 2 times [2022-11-21 16:32:50,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:50,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984065535] [2022-11-21 16:32:50,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:50,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:51,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:51,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:51,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984065535] [2022-11-21 16:32:51,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984065535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:32:51,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:32:51,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:32:51,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873728283] [2022-11-21 16:32:51,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:32:51,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:32:51,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:51,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:32:51,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:32:51,520 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 166 [2022-11-21 16:32:51,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 157 transitions, 434 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:51,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:32:51,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 166 [2022-11-21 16:32:51,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:32:52,485 INFO L130 PetriNetUnfolder]: 230/1348 cut-off events. [2022-11-21 16:32:52,491 INFO L131 PetriNetUnfolder]: For 1050/1056 co-relation queries the response was YES. [2022-11-21 16:32:52,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2909 conditions, 1348 events. 230/1348 cut-off events. For 1050/1056 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 9652 event pairs, 34 based on Foata normal form. 10/1314 useless extension candidates. Maximal degree in co-relation 2852. Up to 225 conditions per place. [2022-11-21 16:32:52,503 INFO L137 encePairwiseOnDemand]: 147/166 looper letters, 133 selfloop transitions, 36 changer transitions 38/314 dead transitions. [2022-11-21 16:32:52,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 314 transitions, 1604 flow [2022-11-21 16:32:52,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-21 16:32:52,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-21 16:32:52,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2878 transitions. [2022-11-21 16:32:52,510 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7537977998952331 [2022-11-21 16:32:52,510 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2878 transitions. [2022-11-21 16:32:52,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2878 transitions. [2022-11-21 16:32:52,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:32:52,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2878 transitions. [2022-11-21 16:32:52,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 125.1304347826087) internal successors, (2878), 23 states have internal predecessors, (2878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:52,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 166.0) internal successors, (3984), 24 states have internal predecessors, (3984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:52,531 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 166.0) internal successors, (3984), 24 states have internal predecessors, (3984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:52,531 INFO L175 Difference]: Start difference. First operand has 182 places, 157 transitions, 434 flow. Second operand 23 states and 2878 transitions. [2022-11-21 16:32:52,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 314 transitions, 1604 flow [2022-11-21 16:32:52,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 314 transitions, 1512 flow, removed 44 selfloop flow, removed 8 redundant places. [2022-11-21 16:32:52,552 INFO L231 Difference]: Finished difference. Result has 198 places, 188 transitions, 787 flow [2022-11-21 16:32:52,552 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=787, PETRI_PLACES=198, PETRI_TRANSITIONS=188} [2022-11-21 16:32:52,553 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 47 predicate places. [2022-11-21 16:32:52,553 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 188 transitions, 787 flow [2022-11-21 16:32:52,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:52,554 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:32:52,555 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] [2022-11-21 16:32:52,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:32:52,555 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:32:52,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:52,557 INFO L85 PathProgramCache]: Analyzing trace with hash -503534527, now seen corresponding path program 3 times [2022-11-21 16:32:52,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:52,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960628824] [2022-11-21 16:32:52,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:52,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:52,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:52,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:52,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960628824] [2022-11-21 16:32:52,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960628824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:32:52,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:32:52,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:32:52,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733388449] [2022-11-21 16:32:52,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:32:52,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:32:52,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:52,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:32:52,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:32:52,937 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 166 [2022-11-21 16:32:52,938 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 188 transitions, 787 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:52,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:32:52,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 166 [2022-11-21 16:32:52,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:32:53,467 INFO L130 PetriNetUnfolder]: 215/1335 cut-off events. [2022-11-21 16:32:53,468 INFO L131 PetriNetUnfolder]: For 2717/2723 co-relation queries the response was YES. [2022-11-21 16:32:53,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3479 conditions, 1335 events. 215/1335 cut-off events. For 2717/2723 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9485 event pairs, 109 based on Foata normal form. 1/1277 useless extension candidates. Maximal degree in co-relation 3410. Up to 255 conditions per place. [2022-11-21 16:32:53,482 INFO L137 encePairwiseOnDemand]: 149/166 looper letters, 122 selfloop transitions, 25 changer transitions 21/275 dead transitions. [2022-11-21 16:32:53,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 275 transitions, 1633 flow [2022-11-21 16:32:53,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 16:32:53,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 16:32:53,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1643 transitions. [2022-11-21 16:32:53,486 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7613531047265987 [2022-11-21 16:32:53,487 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1643 transitions. [2022-11-21 16:32:53,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1643 transitions. [2022-11-21 16:32:53,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:32:53,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1643 transitions. [2022-11-21 16:32:53,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 126.38461538461539) internal successors, (1643), 13 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:53,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:53,499 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:53,499 INFO L175 Difference]: Start difference. First operand has 198 places, 188 transitions, 787 flow. Second operand 13 states and 1643 transitions. [2022-11-21 16:32:53,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 275 transitions, 1633 flow [2022-11-21 16:32:53,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 275 transitions, 1544 flow, removed 43 selfloop flow, removed 6 redundant places. [2022-11-21 16:32:53,526 INFO L231 Difference]: Finished difference. Result has 205 places, 197 transitions, 932 flow [2022-11-21 16:32:53,527 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=932, PETRI_PLACES=205, PETRI_TRANSITIONS=197} [2022-11-21 16:32:53,531 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 54 predicate places. [2022-11-21 16:32:53,532 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 197 transitions, 932 flow [2022-11-21 16:32:53,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:53,534 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:32:53,534 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] [2022-11-21 16:32:53,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:32:53,534 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:32:53,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:53,535 INFO L85 PathProgramCache]: Analyzing trace with hash -189166153, now seen corresponding path program 4 times [2022-11-21 16:32:53,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:53,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145322726] [2022-11-21 16:32:53,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:53,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:53,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:53,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:53,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145322726] [2022-11-21 16:32:53,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145322726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:32:53,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:32:53,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:32:53,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662779918] [2022-11-21 16:32:53,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:32:53,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:32:53,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:53,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:32:53,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:32:53,931 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 166 [2022-11-21 16:32:53,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 197 transitions, 932 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:53,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:32:53,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 166 [2022-11-21 16:32:53,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:32:54,547 INFO L130 PetriNetUnfolder]: 217/1467 cut-off events. [2022-11-21 16:32:54,547 INFO L131 PetriNetUnfolder]: For 2987/2993 co-relation queries the response was YES. [2022-11-21 16:32:54,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3749 conditions, 1467 events. 217/1467 cut-off events. For 2987/2993 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 10744 event pairs, 91 based on Foata normal form. 5/1410 useless extension candidates. Maximal degree in co-relation 3671. Up to 302 conditions per place. [2022-11-21 16:32:54,563 INFO L137 encePairwiseOnDemand]: 149/166 looper letters, 145 selfloop transitions, 23 changer transitions 24/299 dead transitions. [2022-11-21 16:32:54,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 299 transitions, 1962 flow [2022-11-21 16:32:54,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 16:32:54,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 16:32:54,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1894 transitions. [2022-11-21 16:32:54,569 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7606425702811245 [2022-11-21 16:32:54,569 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1894 transitions. [2022-11-21 16:32:54,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1894 transitions. [2022-11-21 16:32:54,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:32:54,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1894 transitions. [2022-11-21 16:32:54,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 126.26666666666667) internal successors, (1894), 15 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:54,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:54,626 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:54,626 INFO L175 Difference]: Start difference. First operand has 205 places, 197 transitions, 932 flow. Second operand 15 states and 1894 transitions. [2022-11-21 16:32:54,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 299 transitions, 1962 flow [2022-11-21 16:32:54,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 299 transitions, 1844 flow, removed 41 selfloop flow, removed 7 redundant places. [2022-11-21 16:32:54,648 INFO L231 Difference]: Finished difference. Result has 221 places, 207 transitions, 1098 flow [2022-11-21 16:32:54,649 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1098, PETRI_PLACES=221, PETRI_TRANSITIONS=207} [2022-11-21 16:32:54,649 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 70 predicate places. [2022-11-21 16:32:54,649 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 207 transitions, 1098 flow [2022-11-21 16:32:54,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:54,650 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:32:54,650 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] [2022-11-21 16:32:54,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:32:54,651 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:32:54,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:54,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1384740205, now seen corresponding path program 5 times [2022-11-21 16:32:54,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:54,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627098939] [2022-11-21 16:32:54,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:54,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:54,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:54,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:54,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:54,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627098939] [2022-11-21 16:32:54,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627098939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:32:54,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:32:54,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:32:54,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357089716] [2022-11-21 16:32:54,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:32:54,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:32:54,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:54,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:32:54,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:32:54,966 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 166 [2022-11-21 16:32:54,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 207 transitions, 1098 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:54,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:32:54,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 166 [2022-11-21 16:32:54,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:32:55,712 INFO L130 PetriNetUnfolder]: 254/1727 cut-off events. [2022-11-21 16:32:55,712 INFO L131 PetriNetUnfolder]: For 4168/4174 co-relation queries the response was YES. [2022-11-21 16:32:55,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4552 conditions, 1727 events. 254/1727 cut-off events. For 4168/4174 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 12977 event pairs, 72 based on Foata normal form. 1/1658 useless extension candidates. Maximal degree in co-relation 4456. Up to 361 conditions per place. [2022-11-21 16:32:55,732 INFO L137 encePairwiseOnDemand]: 146/166 looper letters, 127 selfloop transitions, 34 changer transitions 23/291 dead transitions. [2022-11-21 16:32:55,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 291 transitions, 1954 flow [2022-11-21 16:32:55,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:32:55,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 16:32:55,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1766 transitions. [2022-11-21 16:32:55,737 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7598967297762479 [2022-11-21 16:32:55,737 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1766 transitions. [2022-11-21 16:32:55,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1766 transitions. [2022-11-21 16:32:55,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:32:55,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1766 transitions. [2022-11-21 16:32:55,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 126.14285714285714) internal successors, (1766), 14 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:55,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 166.0) internal successors, (2490), 15 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:55,748 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 166.0) internal successors, (2490), 15 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:55,748 INFO L175 Difference]: Start difference. First operand has 221 places, 207 transitions, 1098 flow. Second operand 14 states and 1766 transitions. [2022-11-21 16:32:55,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 291 transitions, 1954 flow [2022-11-21 16:32:55,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 291 transitions, 1912 flow, removed 21 selfloop flow, removed 7 redundant places. [2022-11-21 16:32:55,784 INFO L231 Difference]: Finished difference. Result has 229 places, 217 transitions, 1323 flow [2022-11-21 16:32:55,785 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1072, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1323, PETRI_PLACES=229, PETRI_TRANSITIONS=217} [2022-11-21 16:32:55,785 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 78 predicate places. [2022-11-21 16:32:55,786 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 217 transitions, 1323 flow [2022-11-21 16:32:55,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:55,786 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:32:55,787 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] [2022-11-21 16:32:55,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:32:55,787 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:32:55,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:55,788 INFO L85 PathProgramCache]: Analyzing trace with hash -199703781, now seen corresponding path program 6 times [2022-11-21 16:32:55,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:55,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557224636] [2022-11-21 16:32:55,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:55,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:56,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:56,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:56,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557224636] [2022-11-21 16:32:56,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557224636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:32:56,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:32:56,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:32:56,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000757460] [2022-11-21 16:32:56,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:32:56,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:32:56,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:56,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:32:56,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:32:56,049 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 166 [2022-11-21 16:32:56,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 217 transitions, 1323 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:56,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:32:56,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 166 [2022-11-21 16:32:56,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:32:56,630 INFO L130 PetriNetUnfolder]: 250/1637 cut-off events. [2022-11-21 16:32:56,630 INFO L131 PetriNetUnfolder]: For 5041/5094 co-relation queries the response was YES. [2022-11-21 16:32:56,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4693 conditions, 1637 events. 250/1637 cut-off events. For 5041/5094 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12023 event pairs, 107 based on Foata normal form. 2/1575 useless extension candidates. Maximal degree in co-relation 4603. Up to 337 conditions per place. [2022-11-21 16:32:56,650 INFO L137 encePairwiseOnDemand]: 148/166 looper letters, 138 selfloop transitions, 19 changer transitions 26/290 dead transitions. [2022-11-21 16:32:56,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 290 transitions, 2124 flow [2022-11-21 16:32:56,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 16:32:56,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 16:32:56,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1872 transitions. [2022-11-21 16:32:56,656 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7518072289156627 [2022-11-21 16:32:56,656 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1872 transitions. [2022-11-21 16:32:56,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1872 transitions. [2022-11-21 16:32:56,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:32:56,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1872 transitions. [2022-11-21 16:32:56,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 124.8) internal successors, (1872), 15 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:56,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:56,668 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:56,668 INFO L175 Difference]: Start difference. First operand has 229 places, 217 transitions, 1323 flow. Second operand 15 states and 1872 transitions. [2022-11-21 16:32:56,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 290 transitions, 2124 flow [2022-11-21 16:32:56,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 290 transitions, 2067 flow, removed 26 selfloop flow, removed 8 redundant places. [2022-11-21 16:32:56,712 INFO L231 Difference]: Finished difference. Result has 233 places, 208 transitions, 1220 flow [2022-11-21 16:32:56,713 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1220, PETRI_PLACES=233, PETRI_TRANSITIONS=208} [2022-11-21 16:32:56,715 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 82 predicate places. [2022-11-21 16:32:56,716 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 208 transitions, 1220 flow [2022-11-21 16:32:56,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:56,716 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:32:56,717 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] [2022-11-21 16:32:56,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:32:56,717 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:32:56,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:56,718 INFO L85 PathProgramCache]: Analyzing trace with hash 659857909, now seen corresponding path program 7 times [2022-11-21 16:32:56,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:56,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624743918] [2022-11-21 16:32:56,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:56,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:57,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:57,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:57,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624743918] [2022-11-21 16:32:57,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624743918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:32:57,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:32:57,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:32:57,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534784223] [2022-11-21 16:32:57,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:32:57,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:32:57,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:57,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:32:57,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:32:57,030 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 166 [2022-11-21 16:32:57,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 208 transitions, 1220 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:57,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:32:57,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 166 [2022-11-21 16:32:57,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:32:57,700 INFO L130 PetriNetUnfolder]: 248/1681 cut-off events. [2022-11-21 16:32:57,700 INFO L131 PetriNetUnfolder]: For 5230/5283 co-relation queries the response was YES. [2022-11-21 16:32:57,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4753 conditions, 1681 events. 248/1681 cut-off events. For 5230/5283 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 12518 event pairs, 116 based on Foata normal form. 6/1609 useless extension candidates. Maximal degree in co-relation 4693. Up to 420 conditions per place. [2022-11-21 16:32:57,722 INFO L137 encePairwiseOnDemand]: 150/166 looper letters, 145 selfloop transitions, 15 changer transitions 24/291 dead transitions. [2022-11-21 16:32:57,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 291 transitions, 2072 flow [2022-11-21 16:32:57,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 16:32:57,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 16:32:57,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1891 transitions. [2022-11-21 16:32:57,729 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7594377510040161 [2022-11-21 16:32:57,729 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1891 transitions. [2022-11-21 16:32:57,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1891 transitions. [2022-11-21 16:32:57,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:32:57,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1891 transitions. [2022-11-21 16:32:57,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 126.06666666666666) internal successors, (1891), 15 states have internal predecessors, (1891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:57,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:57,773 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:57,773 INFO L175 Difference]: Start difference. First operand has 233 places, 208 transitions, 1220 flow. Second operand 15 states and 1891 transitions. [2022-11-21 16:32:57,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 291 transitions, 2072 flow [2022-11-21 16:32:57,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 291 transitions, 1941 flow, removed 34 selfloop flow, removed 13 redundant places. [2022-11-21 16:32:57,804 INFO L231 Difference]: Finished difference. Result has 231 places, 209 transitions, 1217 flow [2022-11-21 16:32:57,805 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1139, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1217, PETRI_PLACES=231, PETRI_TRANSITIONS=209} [2022-11-21 16:32:57,805 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 80 predicate places. [2022-11-21 16:32:57,806 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 209 transitions, 1217 flow [2022-11-21 16:32:57,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:57,806 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:32:57,806 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] [2022-11-21 16:32:57,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:32:57,807 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:32:57,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:57,807 INFO L85 PathProgramCache]: Analyzing trace with hash 851964725, now seen corresponding path program 8 times [2022-11-21 16:32:57,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:57,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313116695] [2022-11-21 16:32:57,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:57,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:58,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:58,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:58,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313116695] [2022-11-21 16:32:58,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313116695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:32:58,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:32:58,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:32:58,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163427338] [2022-11-21 16:32:58,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:32:58,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:32:58,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:58,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:32:58,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:32:58,194 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 166 [2022-11-21 16:32:58,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 209 transitions, 1217 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:58,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:32:58,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 166 [2022-11-21 16:32:58,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:32:58,871 INFO L130 PetriNetUnfolder]: 256/1705 cut-off events. [2022-11-21 16:32:58,872 INFO L131 PetriNetUnfolder]: For 5508/5552 co-relation queries the response was YES. [2022-11-21 16:32:58,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4889 conditions, 1705 events. 256/1705 cut-off events. For 5508/5552 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 12786 event pairs, 117 based on Foata normal form. 2/1638 useless extension candidates. Maximal degree in co-relation 4782. Up to 337 conditions per place. [2022-11-21 16:32:58,893 INFO L137 encePairwiseOnDemand]: 151/166 looper letters, 144 selfloop transitions, 20 changer transitions 20/291 dead transitions. [2022-11-21 16:32:58,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 291 transitions, 2199 flow [2022-11-21 16:32:58,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 16:32:58,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 16:32:58,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1642 transitions. [2022-11-21 16:32:58,896 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7608897126969416 [2022-11-21 16:32:58,897 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1642 transitions. [2022-11-21 16:32:58,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1642 transitions. [2022-11-21 16:32:58,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:32:58,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1642 transitions. [2022-11-21 16:32:58,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 126.3076923076923) internal successors, (1642), 13 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:58,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:58,905 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:58,906 INFO L175 Difference]: Start difference. First operand has 231 places, 209 transitions, 1217 flow. Second operand 13 states and 1642 transitions. [2022-11-21 16:32:58,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 291 transitions, 2199 flow [2022-11-21 16:32:58,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 291 transitions, 2088 flow, removed 43 selfloop flow, removed 10 redundant places. [2022-11-21 16:32:58,940 INFO L231 Difference]: Finished difference. Result has 233 places, 217 transitions, 1384 flow [2022-11-21 16:32:58,941 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1384, PETRI_PLACES=233, PETRI_TRANSITIONS=217} [2022-11-21 16:32:58,942 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 82 predicate places. [2022-11-21 16:32:58,942 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 217 transitions, 1384 flow [2022-11-21 16:32:58,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:58,943 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:32:58,943 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] [2022-11-21 16:32:58,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:32:58,943 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:32:58,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:58,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1885846677, now seen corresponding path program 9 times [2022-11-21 16:32:58,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:58,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150266772] [2022-11-21 16:32:58,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:58,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:58,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:59,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:59,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:59,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150266772] [2022-11-21 16:32:59,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150266772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:32:59,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:32:59,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:32:59,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384205515] [2022-11-21 16:32:59,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:32:59,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:32:59,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:59,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:32:59,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:32:59,197 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 166 [2022-11-21 16:32:59,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 217 transitions, 1384 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:59,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:32:59,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 166 [2022-11-21 16:32:59,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:32:59,917 INFO L130 PetriNetUnfolder]: 251/1694 cut-off events. [2022-11-21 16:32:59,918 INFO L131 PetriNetUnfolder]: For 5397/5441 co-relation queries the response was YES. [2022-11-21 16:32:59,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4855 conditions, 1694 events. 251/1694 cut-off events. For 5397/5441 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 12724 event pairs, 117 based on Foata normal form. 2/1627 useless extension candidates. Maximal degree in co-relation 4748. Up to 337 conditions per place. [2022-11-21 16:32:59,939 INFO L137 encePairwiseOnDemand]: 151/166 looper letters, 142 selfloop transitions, 13 changer transitions 26/288 dead transitions. [2022-11-21 16:32:59,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 288 transitions, 2159 flow [2022-11-21 16:32:59,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:32:59,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 16:32:59,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1756 transitions. [2022-11-21 16:32:59,943 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7555938037865749 [2022-11-21 16:32:59,943 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1756 transitions. [2022-11-21 16:32:59,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1756 transitions. [2022-11-21 16:32:59,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:32:59,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1756 transitions. [2022-11-21 16:32:59,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 125.42857142857143) internal successors, (1756), 14 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:59,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 166.0) internal successors, (2490), 15 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:59,957 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 166.0) internal successors, (2490), 15 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:59,957 INFO L175 Difference]: Start difference. First operand has 233 places, 217 transitions, 1384 flow. Second operand 14 states and 1756 transitions. [2022-11-21 16:32:59,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 288 transitions, 2159 flow [2022-11-21 16:32:59,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 288 transitions, 2100 flow, removed 26 selfloop flow, removed 6 redundant places. [2022-11-21 16:32:59,994 INFO L231 Difference]: Finished difference. Result has 241 places, 210 transitions, 1273 flow [2022-11-21 16:32:59,995 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1353, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1273, PETRI_PLACES=241, PETRI_TRANSITIONS=210} [2022-11-21 16:32:59,996 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 90 predicate places. [2022-11-21 16:32:59,997 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 210 transitions, 1273 flow [2022-11-21 16:32:59,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:59,997 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:32:59,997 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] [2022-11-21 16:32:59,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:32:59,998 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:32:59,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:59,998 INFO L85 PathProgramCache]: Analyzing trace with hash -207083305, now seen corresponding path program 10 times [2022-11-21 16:32:59,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:59,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867999666] [2022-11-21 16:32:59,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:59,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:00,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:00,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:00,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867999666] [2022-11-21 16:33:00,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867999666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:00,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:00,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:33:00,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98153566] [2022-11-21 16:33:00,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:00,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:33:00,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:00,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:33:00,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:33:00,349 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 166 [2022-11-21 16:33:00,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 210 transitions, 1273 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:00,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:00,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 166 [2022-11-21 16:33:00,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:01,036 INFO L130 PetriNetUnfolder]: 249/1688 cut-off events. [2022-11-21 16:33:01,037 INFO L131 PetriNetUnfolder]: For 5425/5469 co-relation queries the response was YES. [2022-11-21 16:33:01,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4816 conditions, 1688 events. 249/1688 cut-off events. For 5425/5469 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 12661 event pairs, 119 based on Foata normal form. 2/1619 useless extension candidates. Maximal degree in co-relation 4708. Up to 337 conditions per place. [2022-11-21 16:33:01,061 INFO L137 encePairwiseOnDemand]: 151/166 looper letters, 138 selfloop transitions, 17 changer transitions 22/284 dead transitions. [2022-11-21 16:33:01,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 284 transitions, 2144 flow [2022-11-21 16:33:01,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 16:33:01,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 16:33:01,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1636 transitions. [2022-11-21 16:33:01,065 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.758109360518999 [2022-11-21 16:33:01,065 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1636 transitions. [2022-11-21 16:33:01,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1636 transitions. [2022-11-21 16:33:01,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:01,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1636 transitions. [2022-11-21 16:33:01,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 125.84615384615384) internal successors, (1636), 13 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:01,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:01,073 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:01,073 INFO L175 Difference]: Start difference. First operand has 241 places, 210 transitions, 1273 flow. Second operand 13 states and 1636 transitions. [2022-11-21 16:33:01,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 284 transitions, 2144 flow [2022-11-21 16:33:01,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 284 transitions, 2024 flow, removed 41 selfloop flow, removed 15 redundant places. [2022-11-21 16:33:01,107 INFO L231 Difference]: Finished difference. Result has 233 places, 215 transitions, 1359 flow [2022-11-21 16:33:01,109 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1220, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1359, PETRI_PLACES=233, PETRI_TRANSITIONS=215} [2022-11-21 16:33:01,109 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 82 predicate places. [2022-11-21 16:33:01,110 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 215 transitions, 1359 flow [2022-11-21 16:33:01,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:01,110 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:01,110 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] [2022-11-21 16:33:01,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 16:33:01,111 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:01,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:01,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1985350523, now seen corresponding path program 11 times [2022-11-21 16:33:01,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:01,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627440341] [2022-11-21 16:33:01,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:01,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:01,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:01,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:01,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627440341] [2022-11-21 16:33:01,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627440341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:01,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:01,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:33:01,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619434607] [2022-11-21 16:33:01,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:01,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:33:01,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:01,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:33:01,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:33:01,446 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 166 [2022-11-21 16:33:01,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 215 transitions, 1359 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:01,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:01,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 166 [2022-11-21 16:33:01,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:02,140 INFO L130 PetriNetUnfolder]: 246/1671 cut-off events. [2022-11-21 16:33:02,140 INFO L131 PetriNetUnfolder]: For 5011/5055 co-relation queries the response was YES. [2022-11-21 16:33:02,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4673 conditions, 1671 events. 246/1671 cut-off events. For 5011/5055 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 12371 event pairs, 116 based on Foata normal form. 9/1602 useless extension candidates. Maximal degree in co-relation 4572. Up to 420 conditions per place. [2022-11-21 16:33:02,168 INFO L137 encePairwiseOnDemand]: 150/166 looper letters, 118 selfloop transitions, 18 changer transitions 27/270 dead transitions. [2022-11-21 16:33:02,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 270 transitions, 1924 flow [2022-11-21 16:33:02,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:33:02,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 16:33:02,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1755 transitions. [2022-11-21 16:33:02,172 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7551635111876076 [2022-11-21 16:33:02,172 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1755 transitions. [2022-11-21 16:33:02,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1755 transitions. [2022-11-21 16:33:02,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:02,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1755 transitions. [2022-11-21 16:33:02,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 125.35714285714286) internal successors, (1755), 14 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:02,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 166.0) internal successors, (2490), 15 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:02,181 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 166.0) internal successors, (2490), 15 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:02,181 INFO L175 Difference]: Start difference. First operand has 233 places, 215 transitions, 1359 flow. Second operand 14 states and 1755 transitions. [2022-11-21 16:33:02,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 270 transitions, 1924 flow [2022-11-21 16:33:02,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 270 transitions, 1836 flow, removed 28 selfloop flow, removed 9 redundant places. [2022-11-21 16:33:02,214 INFO L231 Difference]: Finished difference. Result has 235 places, 204 transitions, 1161 flow [2022-11-21 16:33:02,215 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1291, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1161, PETRI_PLACES=235, PETRI_TRANSITIONS=204} [2022-11-21 16:33:02,215 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 84 predicate places. [2022-11-21 16:33:02,215 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 204 transitions, 1161 flow [2022-11-21 16:33:02,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:02,216 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:02,216 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] [2022-11-21 16:33:02,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 16:33:02,216 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:02,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:02,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1712376670, now seen corresponding path program 1 times [2022-11-21 16:33:02,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:02,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510368285] [2022-11-21 16:33:02,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:02,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:02,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:02,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:02,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:02,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510368285] [2022-11-21 16:33:02,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510368285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:02,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:02,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:33:02,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599734410] [2022-11-21 16:33:02,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:02,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:33:02,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:02,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:33:02,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:33:02,471 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-21 16:33:02,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 204 transitions, 1161 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:02,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:02,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-21 16:33:02,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:03,096 INFO L130 PetriNetUnfolder]: 219/1284 cut-off events. [2022-11-21 16:33:03,096 INFO L131 PetriNetUnfolder]: For 5423/5511 co-relation queries the response was YES. [2022-11-21 16:33:03,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3779 conditions, 1284 events. 219/1284 cut-off events. For 5423/5511 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 8393 event pairs, 69 based on Foata normal form. 43/1285 useless extension candidates. Maximal degree in co-relation 3735. Up to 236 conditions per place. [2022-11-21 16:33:03,112 INFO L137 encePairwiseOnDemand]: 151/166 looper letters, 143 selfloop transitions, 12 changer transitions 34/304 dead transitions. [2022-11-21 16:33:03,112 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 304 transitions, 2317 flow [2022-11-21 16:33:03,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 16:33:03,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-21 16:33:03,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2414 transitions. [2022-11-21 16:33:03,117 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7653772986683577 [2022-11-21 16:33:03,117 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2414 transitions. [2022-11-21 16:33:03,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2414 transitions. [2022-11-21 16:33:03,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:03,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2414 transitions. [2022-11-21 16:33:03,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 127.05263157894737) internal successors, (2414), 19 states have internal predecessors, (2414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:03,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 166.0) internal successors, (3320), 20 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:03,128 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 166.0) internal successors, (3320), 20 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:03,129 INFO L175 Difference]: Start difference. First operand has 235 places, 204 transitions, 1161 flow. Second operand 19 states and 2414 transitions. [2022-11-21 16:33:03,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 304 transitions, 2317 flow [2022-11-21 16:33:03,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 304 transitions, 2044 flow, removed 102 selfloop flow, removed 19 redundant places. [2022-11-21 16:33:03,152 INFO L231 Difference]: Finished difference. Result has 221 places, 184 transitions, 876 flow [2022-11-21 16:33:03,152 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=876, PETRI_PLACES=221, PETRI_TRANSITIONS=184} [2022-11-21 16:33:03,155 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 70 predicate places. [2022-11-21 16:33:03,155 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 184 transitions, 876 flow [2022-11-21 16:33:03,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:03,156 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:03,156 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] [2022-11-21 16:33:03,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 16:33:03,157 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:03,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:03,157 INFO L85 PathProgramCache]: Analyzing trace with hash -189804866, now seen corresponding path program 2 times [2022-11-21 16:33:03,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:03,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480683780] [2022-11-21 16:33:03,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:03,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:03,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:03,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:03,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480683780] [2022-11-21 16:33:03,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480683780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:03,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:03,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:33:03,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386323784] [2022-11-21 16:33:03,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:03,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:33:03,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:03,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:33:03,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:33:03,411 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-21 16:33:03,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 184 transitions, 876 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:03,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:03,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-21 16:33:03,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:04,027 INFO L130 PetriNetUnfolder]: 228/1479 cut-off events. [2022-11-21 16:33:04,027 INFO L131 PetriNetUnfolder]: For 5959/6022 co-relation queries the response was YES. [2022-11-21 16:33:04,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4517 conditions, 1479 events. 228/1479 cut-off events. For 5959/6022 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 10404 event pairs, 100 based on Foata normal form. 18/1430 useless extension candidates. Maximal degree in co-relation 4471. Up to 435 conditions per place. [2022-11-21 16:33:04,044 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 99 selfloop transitions, 20 changer transitions 20/254 dead transitions. [2022-11-21 16:33:04,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 254 transitions, 1830 flow [2022-11-21 16:33:04,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 16:33:04,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 16:33:04,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1897 transitions. [2022-11-21 16:33:04,051 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.761847389558233 [2022-11-21 16:33:04,051 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1897 transitions. [2022-11-21 16:33:04,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1897 transitions. [2022-11-21 16:33:04,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:04,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1897 transitions. [2022-11-21 16:33:04,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 126.46666666666667) internal successors, (1897), 15 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:04,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:04,063 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:04,063 INFO L175 Difference]: Start difference. First operand has 221 places, 184 transitions, 876 flow. Second operand 15 states and 1897 transitions. [2022-11-21 16:33:04,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 254 transitions, 1830 flow [2022-11-21 16:33:04,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 254 transitions, 1698 flow, removed 62 selfloop flow, removed 10 redundant places. [2022-11-21 16:33:04,094 INFO L231 Difference]: Finished difference. Result has 226 places, 197 transitions, 1105 flow [2022-11-21 16:33:04,095 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1105, PETRI_PLACES=226, PETRI_TRANSITIONS=197} [2022-11-21 16:33:04,096 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 75 predicate places. [2022-11-21 16:33:04,097 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 197 transitions, 1105 flow [2022-11-21 16:33:04,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:04,097 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:04,098 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] [2022-11-21 16:33:04,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 16:33:04,098 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:04,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:04,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1963263380, now seen corresponding path program 3 times [2022-11-21 16:33:04,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:04,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059218411] [2022-11-21 16:33:04,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:04,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:04,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:04,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:04,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059218411] [2022-11-21 16:33:04,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059218411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:04,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:04,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:33:04,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531324963] [2022-11-21 16:33:04,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:04,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:33:04,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:04,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:33:04,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:33:04,361 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-21 16:33:04,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 197 transitions, 1105 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:04,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:04,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-21 16:33:04,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:04,946 INFO L130 PetriNetUnfolder]: 226/1387 cut-off events. [2022-11-21 16:33:04,947 INFO L131 PetriNetUnfolder]: For 6505/6572 co-relation queries the response was YES. [2022-11-21 16:33:04,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4579 conditions, 1387 events. 226/1387 cut-off events. For 6505/6572 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 9431 event pairs, 78 based on Foata normal form. 20/1353 useless extension candidates. Maximal degree in co-relation 4529. Up to 362 conditions per place. [2022-11-21 16:33:04,958 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 118 selfloop transitions, 23 changer transitions 15/271 dead transitions. [2022-11-21 16:33:04,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 271 transitions, 2223 flow [2022-11-21 16:33:04,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:33:04,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 16:33:04,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1775 transitions. [2022-11-21 16:33:04,962 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7637693631669535 [2022-11-21 16:33:04,962 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1775 transitions. [2022-11-21 16:33:04,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1775 transitions. [2022-11-21 16:33:04,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:04,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1775 transitions. [2022-11-21 16:33:04,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 126.78571428571429) internal successors, (1775), 14 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:04,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 166.0) internal successors, (2490), 15 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:04,971 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 166.0) internal successors, (2490), 15 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:04,971 INFO L175 Difference]: Start difference. First operand has 226 places, 197 transitions, 1105 flow. Second operand 14 states and 1775 transitions. [2022-11-21 16:33:04,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 271 transitions, 2223 flow [2022-11-21 16:33:05,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 271 transitions, 2135 flow, removed 40 selfloop flow, removed 7 redundant places. [2022-11-21 16:33:05,004 INFO L231 Difference]: Finished difference. Result has 234 places, 206 transitions, 1296 flow [2022-11-21 16:33:05,005 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1296, PETRI_PLACES=234, PETRI_TRANSITIONS=206} [2022-11-21 16:33:05,006 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 83 predicate places. [2022-11-21 16:33:05,006 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 206 transitions, 1296 flow [2022-11-21 16:33:05,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:05,007 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:05,007 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] [2022-11-21 16:33:05,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 16:33:05,008 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:05,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:05,008 INFO L85 PathProgramCache]: Analyzing trace with hash 228209688, now seen corresponding path program 4 times [2022-11-21 16:33:05,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:05,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265276585] [2022-11-21 16:33:05,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:05,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:05,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:05,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:05,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265276585] [2022-11-21 16:33:05,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265276585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:05,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:05,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:33:05,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668399004] [2022-11-21 16:33:05,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:05,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:33:05,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:05,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:33:05,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:33:05,246 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-21 16:33:05,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 206 transitions, 1296 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:05,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:05,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-21 16:33:05,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:05,791 INFO L130 PetriNetUnfolder]: 229/1403 cut-off events. [2022-11-21 16:33:05,791 INFO L131 PetriNetUnfolder]: For 7617/7684 co-relation queries the response was YES. [2022-11-21 16:33:05,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4863 conditions, 1403 events. 229/1403 cut-off events. For 7617/7684 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 9584 event pairs, 81 based on Foata normal form. 19/1366 useless extension candidates. Maximal degree in co-relation 4811. Up to 364 conditions per place. [2022-11-21 16:33:05,831 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 115 selfloop transitions, 27 changer transitions 20/277 dead transitions. [2022-11-21 16:33:05,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 277 transitions, 2459 flow [2022-11-21 16:33:05,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 16:33:05,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-21 16:33:05,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2021 transitions. [2022-11-21 16:33:05,837 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7609186746987951 [2022-11-21 16:33:05,837 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2021 transitions. [2022-11-21 16:33:05,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2021 transitions. [2022-11-21 16:33:05,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:05,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2021 transitions. [2022-11-21 16:33:05,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 126.3125) internal successors, (2021), 16 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:05,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 166.0) internal successors, (2822), 17 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:05,849 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 166.0) internal successors, (2822), 17 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:05,849 INFO L175 Difference]: Start difference. First operand has 234 places, 206 transitions, 1296 flow. Second operand 16 states and 2021 transitions. [2022-11-21 16:33:05,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 277 transitions, 2459 flow [2022-11-21 16:33:05,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 277 transitions, 2316 flow, removed 51 selfloop flow, removed 8 redundant places. [2022-11-21 16:33:05,889 INFO L231 Difference]: Finished difference. Result has 245 places, 219 transitions, 1533 flow [2022-11-21 16:33:05,890 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1193, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1533, PETRI_PLACES=245, PETRI_TRANSITIONS=219} [2022-11-21 16:33:05,891 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 94 predicate places. [2022-11-21 16:33:05,891 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 219 transitions, 1533 flow [2022-11-21 16:33:05,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:05,892 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:05,892 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] [2022-11-21 16:33:05,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 16:33:05,893 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:05,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:05,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1524180720, now seen corresponding path program 5 times [2022-11-21 16:33:05,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:05,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257206625] [2022-11-21 16:33:05,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:05,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:06,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:06,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:06,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257206625] [2022-11-21 16:33:06,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257206625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:06,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:06,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:33:06,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483199368] [2022-11-21 16:33:06,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:06,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:33:06,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:06,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:33:06,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:33:06,172 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-21 16:33:06,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 219 transitions, 1533 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:06,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:06,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-21 16:33:06,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:06,780 INFO L130 PetriNetUnfolder]: 222/1547 cut-off events. [2022-11-21 16:33:06,780 INFO L131 PetriNetUnfolder]: For 8960/9029 co-relation queries the response was YES. [2022-11-21 16:33:06,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5140 conditions, 1547 events. 222/1547 cut-off events. For 8960/9029 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 11235 event pairs, 101 based on Foata normal form. 18/1502 useless extension candidates. Maximal degree in co-relation 5083. Up to 395 conditions per place. [2022-11-21 16:33:06,794 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 130 selfloop transitions, 33 changer transitions 21/299 dead transitions. [2022-11-21 16:33:06,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 299 transitions, 2512 flow [2022-11-21 16:33:06,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 16:33:06,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 16:33:06,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2275 transitions. [2022-11-21 16:33:06,801 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7613788487282463 [2022-11-21 16:33:06,802 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2275 transitions. [2022-11-21 16:33:06,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2275 transitions. [2022-11-21 16:33:06,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:06,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2275 transitions. [2022-11-21 16:33:06,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 126.38888888888889) internal successors, (2275), 18 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:06,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 166.0) internal successors, (3154), 19 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:06,814 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 166.0) internal successors, (3154), 19 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:06,815 INFO L175 Difference]: Start difference. First operand has 245 places, 219 transitions, 1533 flow. Second operand 18 states and 2275 transitions. [2022-11-21 16:33:06,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 299 transitions, 2512 flow [2022-11-21 16:33:06,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 299 transitions, 2391 flow, removed 55 selfloop flow, removed 7 redundant places. [2022-11-21 16:33:06,870 INFO L231 Difference]: Finished difference. Result has 262 places, 222 transitions, 1637 flow [2022-11-21 16:33:06,870 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1446, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1637, PETRI_PLACES=262, PETRI_TRANSITIONS=222} [2022-11-21 16:33:06,871 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 111 predicate places. [2022-11-21 16:33:06,873 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 222 transitions, 1637 flow [2022-11-21 16:33:06,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:06,874 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:06,874 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] [2022-11-21 16:33:06,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 16:33:06,877 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:06,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:06,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1517750586, now seen corresponding path program 1 times [2022-11-21 16:33:06,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:06,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911374687] [2022-11-21 16:33:06,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:06,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:07,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:07,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:07,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911374687] [2022-11-21 16:33:07,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911374687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:07,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:07,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:33:07,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505701961] [2022-11-21 16:33:07,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:07,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:33:07,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:07,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:33:07,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:33:07,095 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-21 16:33:07,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 222 transitions, 1637 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:07,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:07,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-21 16:33:07,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:07,668 INFO L130 PetriNetUnfolder]: 197/1281 cut-off events. [2022-11-21 16:33:07,668 INFO L131 PetriNetUnfolder]: For 7105/7157 co-relation queries the response was YES. [2022-11-21 16:33:07,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4144 conditions, 1281 events. 197/1281 cut-off events. For 7105/7157 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 8688 event pairs, 82 based on Foata normal form. 33/1264 useless extension candidates. Maximal degree in co-relation 4079. Up to 256 conditions per place. [2022-11-21 16:33:07,684 INFO L137 encePairwiseOnDemand]: 151/166 looper letters, 140 selfloop transitions, 9 changer transitions 28/301 dead transitions. [2022-11-21 16:33:07,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 301 transitions, 2452 flow [2022-11-21 16:33:07,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 16:33:07,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 16:33:07,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2279 transitions. [2022-11-21 16:33:07,699 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7627175368139224 [2022-11-21 16:33:07,700 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2279 transitions. [2022-11-21 16:33:07,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2279 transitions. [2022-11-21 16:33:07,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:07,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2279 transitions. [2022-11-21 16:33:07,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 126.61111111111111) internal successors, (2279), 18 states have internal predecessors, (2279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:07,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 166.0) internal successors, (3154), 19 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:07,717 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 166.0) internal successors, (3154), 19 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:07,718 INFO L175 Difference]: Start difference. First operand has 262 places, 222 transitions, 1637 flow. Second operand 18 states and 2279 transitions. [2022-11-21 16:33:07,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 301 transitions, 2452 flow [2022-11-21 16:33:07,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 301 transitions, 2350 flow, removed 48 selfloop flow, removed 13 redundant places. [2022-11-21 16:33:07,767 INFO L231 Difference]: Finished difference. Result has 271 places, 226 transitions, 1690 flow [2022-11-21 16:33:07,767 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1531, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1690, PETRI_PLACES=271, PETRI_TRANSITIONS=226} [2022-11-21 16:33:07,768 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 120 predicate places. [2022-11-21 16:33:07,768 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 226 transitions, 1690 flow [2022-11-21 16:33:07,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:07,769 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:07,769 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] [2022-11-21 16:33:07,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 16:33:07,769 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:07,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:07,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1751370832, now seen corresponding path program 2 times [2022-11-21 16:33:07,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:07,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114920641] [2022-11-21 16:33:07,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:07,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:08,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:08,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:08,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114920641] [2022-11-21 16:33:08,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114920641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:08,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:08,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:33:08,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523933095] [2022-11-21 16:33:08,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:08,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:33:08,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:08,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:33:08,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:33:08,028 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-21 16:33:08,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 226 transitions, 1690 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:08,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:08,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-21 16:33:08,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:08,874 INFO L130 PetriNetUnfolder]: 196/1314 cut-off events. [2022-11-21 16:33:08,875 INFO L131 PetriNetUnfolder]: For 7378/7429 co-relation queries the response was YES. [2022-11-21 16:33:08,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4426 conditions, 1314 events. 196/1314 cut-off events. For 7378/7429 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 9009 event pairs, 69 based on Foata normal form. 17/1291 useless extension candidates. Maximal degree in co-relation 4357. Up to 418 conditions per place. [2022-11-21 16:33:08,888 INFO L137 encePairwiseOnDemand]: 154/166 looper letters, 123 selfloop transitions, 9 changer transitions 34/290 dead transitions. [2022-11-21 16:33:08,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 290 transitions, 2564 flow [2022-11-21 16:33:08,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 16:33:08,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-21 16:33:08,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2383 transitions. [2022-11-21 16:33:08,892 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7555485098287889 [2022-11-21 16:33:08,893 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2383 transitions. [2022-11-21 16:33:08,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2383 transitions. [2022-11-21 16:33:08,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:08,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2383 transitions. [2022-11-21 16:33:08,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 125.42105263157895) internal successors, (2383), 19 states have internal predecessors, (2383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:08,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 166.0) internal successors, (3320), 20 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:08,909 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 166.0) internal successors, (3320), 20 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:08,909 INFO L175 Difference]: Start difference. First operand has 271 places, 226 transitions, 1690 flow. Second operand 19 states and 2383 transitions. [2022-11-21 16:33:08,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 290 transitions, 2564 flow [2022-11-21 16:33:08,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 290 transitions, 2460 flow, removed 52 selfloop flow, removed 10 redundant places. [2022-11-21 16:33:08,962 INFO L231 Difference]: Finished difference. Result has 282 places, 226 transitions, 1724 flow [2022-11-21 16:33:08,963 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1668, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1724, PETRI_PLACES=282, PETRI_TRANSITIONS=226} [2022-11-21 16:33:08,965 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 131 predicate places. [2022-11-21 16:33:08,965 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 226 transitions, 1724 flow [2022-11-21 16:33:08,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:08,966 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:08,966 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] [2022-11-21 16:33:08,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 16:33:08,966 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:08,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:08,967 INFO L85 PathProgramCache]: Analyzing trace with hash 200295352, now seen corresponding path program 3 times [2022-11-21 16:33:08,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:08,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452440504] [2022-11-21 16:33:08,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:08,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:09,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:09,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:09,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452440504] [2022-11-21 16:33:09,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452440504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:09,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:09,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:33:09,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178547880] [2022-11-21 16:33:09,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:09,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:33:09,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:09,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:33:09,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:33:09,183 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-21 16:33:09,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 226 transitions, 1724 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:09,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:09,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-21 16:33:09,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:09,729 INFO L130 PetriNetUnfolder]: 194/1314 cut-off events. [2022-11-21 16:33:09,729 INFO L131 PetriNetUnfolder]: For 8126/8176 co-relation queries the response was YES. [2022-11-21 16:33:09,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4610 conditions, 1314 events. 194/1314 cut-off events. For 8126/8176 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9059 event pairs, 56 based on Foata normal form. 13/1280 useless extension candidates. Maximal degree in co-relation 4535. Up to 431 conditions per place. [2022-11-21 16:33:09,742 INFO L137 encePairwiseOnDemand]: 149/166 looper letters, 111 selfloop transitions, 28 changer transitions 25/288 dead transitions. [2022-11-21 16:33:09,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 288 transitions, 2853 flow [2022-11-21 16:33:09,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 16:33:09,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 16:33:09,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1884 transitions. [2022-11-21 16:33:09,746 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7566265060240964 [2022-11-21 16:33:09,746 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1884 transitions. [2022-11-21 16:33:09,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1884 transitions. [2022-11-21 16:33:09,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:09,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1884 transitions. [2022-11-21 16:33:09,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 125.6) internal successors, (1884), 15 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:09,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:09,755 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:09,755 INFO L175 Difference]: Start difference. First operand has 282 places, 226 transitions, 1724 flow. Second operand 15 states and 1884 transitions. [2022-11-21 16:33:09,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 288 transitions, 2853 flow [2022-11-21 16:33:09,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 288 transitions, 2718 flow, removed 51 selfloop flow, removed 16 redundant places. [2022-11-21 16:33:09,808 INFO L231 Difference]: Finished difference. Result has 277 places, 242 transitions, 2006 flow [2022-11-21 16:33:09,808 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1682, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2006, PETRI_PLACES=277, PETRI_TRANSITIONS=242} [2022-11-21 16:33:09,809 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 126 predicate places. [2022-11-21 16:33:09,809 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 242 transitions, 2006 flow [2022-11-21 16:33:09,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:09,810 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:09,810 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] [2022-11-21 16:33:09,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 16:33:09,811 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:09,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:09,812 INFO L85 PathProgramCache]: Analyzing trace with hash 2082000630, now seen corresponding path program 4 times [2022-11-21 16:33:09,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:09,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351055949] [2022-11-21 16:33:09,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:09,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:09,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:10,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:10,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:10,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351055949] [2022-11-21 16:33:10,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351055949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:10,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:10,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:33:10,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548887686] [2022-11-21 16:33:10,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:10,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:33:10,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:10,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:33:10,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:33:10,044 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-21 16:33:10,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 242 transitions, 2006 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:10,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:10,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-21 16:33:10,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:10,624 INFO L130 PetriNetUnfolder]: 192/1324 cut-off events. [2022-11-21 16:33:10,624 INFO L131 PetriNetUnfolder]: For 8537/8586 co-relation queries the response was YES. [2022-11-21 16:33:10,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4727 conditions, 1324 events. 192/1324 cut-off events. For 8537/8586 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9193 event pairs, 51 based on Foata normal form. 13/1297 useless extension candidates. Maximal degree in co-relation 4655. Up to 387 conditions per place. [2022-11-21 16:33:10,638 INFO L137 encePairwiseOnDemand]: 149/166 looper letters, 133 selfloop transitions, 24 changer transitions 31/312 dead transitions. [2022-11-21 16:33:10,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 312 transitions, 3137 flow [2022-11-21 16:33:10,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 16:33:10,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 16:33:10,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2267 transitions. [2022-11-21 16:33:10,642 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7587014725568942 [2022-11-21 16:33:10,643 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2267 transitions. [2022-11-21 16:33:10,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2267 transitions. [2022-11-21 16:33:10,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:10,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2267 transitions. [2022-11-21 16:33:10,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 125.94444444444444) internal successors, (2267), 18 states have internal predecessors, (2267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:10,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 166.0) internal successors, (3154), 19 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:10,654 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 166.0) internal successors, (3154), 19 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:10,654 INFO L175 Difference]: Start difference. First operand has 277 places, 242 transitions, 2006 flow. Second operand 18 states and 2267 transitions. [2022-11-21 16:33:10,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 312 transitions, 3137 flow [2022-11-21 16:33:10,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 312 transitions, 2884 flow, removed 119 selfloop flow, removed 8 redundant places. [2022-11-21 16:33:10,722 INFO L231 Difference]: Finished difference. Result has 292 places, 242 transitions, 1969 flow [2022-11-21 16:33:10,722 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1884, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1969, PETRI_PLACES=292, PETRI_TRANSITIONS=242} [2022-11-21 16:33:10,724 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 141 predicate places. [2022-11-21 16:33:10,724 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 242 transitions, 1969 flow [2022-11-21 16:33:10,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:10,725 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:10,725 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] [2022-11-21 16:33:10,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-21 16:33:10,725 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:10,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:10,726 INFO L85 PathProgramCache]: Analyzing trace with hash 737918398, now seen corresponding path program 5 times [2022-11-21 16:33:10,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:10,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710199421] [2022-11-21 16:33:10,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:10,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:10,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:10,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:10,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710199421] [2022-11-21 16:33:10,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710199421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:10,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:10,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:33:10,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395556259] [2022-11-21 16:33:10,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:10,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:33:10,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:10,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:33:10,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:33:10,988 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-21 16:33:11,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 242 transitions, 1969 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:11,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:11,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-21 16:33:11,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:11,599 INFO L130 PetriNetUnfolder]: 181/1276 cut-off events. [2022-11-21 16:33:11,599 INFO L131 PetriNetUnfolder]: For 7861/7908 co-relation queries the response was YES. [2022-11-21 16:33:11,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4499 conditions, 1276 events. 181/1276 cut-off events. For 7861/7908 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 8700 event pairs, 50 based on Foata normal form. 13/1249 useless extension candidates. Maximal degree in co-relation 4421. Up to 406 conditions per place. [2022-11-21 16:33:11,614 INFO L137 encePairwiseOnDemand]: 149/166 looper letters, 111 selfloop transitions, 26 changer transitions 28/289 dead transitions. [2022-11-21 16:33:11,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 289 transitions, 2835 flow [2022-11-21 16:33:11,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 16:33:11,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-21 16:33:11,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2128 transitions. [2022-11-21 16:33:11,618 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7540751240255138 [2022-11-21 16:33:11,619 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2128 transitions. [2022-11-21 16:33:11,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2128 transitions. [2022-11-21 16:33:11,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:11,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2128 transitions. [2022-11-21 16:33:11,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 125.17647058823529) internal successors, (2128), 17 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:11,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:11,629 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:11,629 INFO L175 Difference]: Start difference. First operand has 292 places, 242 transitions, 1969 flow. Second operand 17 states and 2128 transitions. [2022-11-21 16:33:11,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 289 transitions, 2835 flow [2022-11-21 16:33:11,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 289 transitions, 2696 flow, removed 44 selfloop flow, removed 17 redundant places. [2022-11-21 16:33:11,687 INFO L231 Difference]: Finished difference. Result has 290 places, 243 transitions, 1973 flow [2022-11-21 16:33:11,687 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1892, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1973, PETRI_PLACES=290, PETRI_TRANSITIONS=243} [2022-11-21 16:33:11,688 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 139 predicate places. [2022-11-21 16:33:11,688 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 243 transitions, 1973 flow [2022-11-21 16:33:11,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:11,689 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:11,689 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] [2022-11-21 16:33:11,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-21 16:33:11,689 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:11,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:11,690 INFO L85 PathProgramCache]: Analyzing trace with hash -396530844, now seen corresponding path program 6 times [2022-11-21 16:33:11,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:11,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211337974] [2022-11-21 16:33:11,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:11,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:11,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:11,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:11,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211337974] [2022-11-21 16:33:11,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211337974] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:11,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:11,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:33:11,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952466612] [2022-11-21 16:33:11,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:11,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:33:11,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:11,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:33:11,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:33:11,901 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-21 16:33:11,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 243 transitions, 1973 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:11,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:11,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-21 16:33:11,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:12,415 INFO L130 PetriNetUnfolder]: 172/1196 cut-off events. [2022-11-21 16:33:12,415 INFO L131 PetriNetUnfolder]: For 7296/7344 co-relation queries the response was YES. [2022-11-21 16:33:12,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4225 conditions, 1196 events. 172/1196 cut-off events. For 7296/7344 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 7860 event pairs, 53 based on Foata normal form. 14/1171 useless extension candidates. Maximal degree in co-relation 4150. Up to 387 conditions per place. [2022-11-21 16:33:12,428 INFO L137 encePairwiseOnDemand]: 149/166 looper letters, 103 selfloop transitions, 15 changer transitions 29/271 dead transitions. [2022-11-21 16:33:12,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 271 transitions, 2576 flow [2022-11-21 16:33:12,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 16:33:12,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 16:33:12,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1874 transitions. [2022-11-21 16:33:12,433 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7526104417670683 [2022-11-21 16:33:12,433 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1874 transitions. [2022-11-21 16:33:12,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1874 transitions. [2022-11-21 16:33:12,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:12,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1874 transitions. [2022-11-21 16:33:12,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 124.93333333333334) internal successors, (1874), 15 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:12,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:12,443 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:12,443 INFO L175 Difference]: Start difference. First operand has 290 places, 243 transitions, 1973 flow. Second operand 15 states and 1874 transitions. [2022-11-21 16:33:12,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 271 transitions, 2576 flow [2022-11-21 16:33:12,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 271 transitions, 2476 flow, removed 23 selfloop flow, removed 15 redundant places. [2022-11-21 16:33:12,494 INFO L231 Difference]: Finished difference. Result has 283 places, 227 transitions, 1779 flow [2022-11-21 16:33:12,495 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1889, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1779, PETRI_PLACES=283, PETRI_TRANSITIONS=227} [2022-11-21 16:33:12,495 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 132 predicate places. [2022-11-21 16:33:12,495 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 227 transitions, 1779 flow [2022-11-21 16:33:12,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:12,496 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:12,496 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] [2022-11-21 16:33:12,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-21 16:33:12,497 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:12,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:12,497 INFO L85 PathProgramCache]: Analyzing trace with hash -185259020, now seen corresponding path program 7 times [2022-11-21 16:33:12,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:12,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505838399] [2022-11-21 16:33:12,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:12,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:12,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:12,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:12,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505838399] [2022-11-21 16:33:12,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505838399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:12,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:12,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:33:12,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75446916] [2022-11-21 16:33:12,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:12,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:33:12,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:12,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:33:12,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:33:12,723 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-21 16:33:12,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 227 transitions, 1779 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:12,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:12,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-21 16:33:12,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:13,311 INFO L130 PetriNetUnfolder]: 177/1194 cut-off events. [2022-11-21 16:33:13,312 INFO L131 PetriNetUnfolder]: For 6848/6895 co-relation queries the response was YES. [2022-11-21 16:33:13,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4173 conditions, 1194 events. 177/1194 cut-off events. For 6848/6895 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 7922 event pairs, 71 based on Foata normal form. 17/1171 useless extension candidates. Maximal degree in co-relation 4106. Up to 260 conditions per place. [2022-11-21 16:33:13,324 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 126 selfloop transitions, 16 changer transitions 21/287 dead transitions. [2022-11-21 16:33:13,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 287 transitions, 2601 flow [2022-11-21 16:33:13,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:33:13,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 16:33:13,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1777 transitions. [2022-11-21 16:33:13,328 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7646299483648882 [2022-11-21 16:33:13,328 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1777 transitions. [2022-11-21 16:33:13,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1777 transitions. [2022-11-21 16:33:13,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:13,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1777 transitions. [2022-11-21 16:33:13,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 126.92857142857143) internal successors, (1777), 14 states have internal predecessors, (1777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:13,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 166.0) internal successors, (2490), 15 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:13,339 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 166.0) internal successors, (2490), 15 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:13,339 INFO L175 Difference]: Start difference. First operand has 283 places, 227 transitions, 1779 flow. Second operand 14 states and 1777 transitions. [2022-11-21 16:33:13,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 287 transitions, 2601 flow [2022-11-21 16:33:13,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 287 transitions, 2468 flow, removed 22 selfloop flow, removed 11 redundant places. [2022-11-21 16:33:13,387 INFO L231 Difference]: Finished difference. Result has 272 places, 236 transitions, 1883 flow [2022-11-21 16:33:13,388 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1710, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1883, PETRI_PLACES=272, PETRI_TRANSITIONS=236} [2022-11-21 16:33:13,389 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 121 predicate places. [2022-11-21 16:33:13,389 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 236 transitions, 1883 flow [2022-11-21 16:33:13,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:13,389 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:13,390 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] [2022-11-21 16:33:13,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-21 16:33:13,390 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:13,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:13,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1269702676, now seen corresponding path program 8 times [2022-11-21 16:33:13,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:13,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753017805] [2022-11-21 16:33:13,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:13,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:13,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:13,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:13,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753017805] [2022-11-21 16:33:13,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753017805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:13,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:13,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:33:13,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131172935] [2022-11-21 16:33:13,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:13,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:33:13,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:13,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:33:13,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:33:13,594 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-21 16:33:13,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 236 transitions, 1883 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:13,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:13,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-21 16:33:13,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:14,228 INFO L130 PetriNetUnfolder]: 187/1230 cut-off events. [2022-11-21 16:33:14,229 INFO L131 PetriNetUnfolder]: For 7676/7721 co-relation queries the response was YES. [2022-11-21 16:33:14,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4391 conditions, 1230 events. 187/1230 cut-off events. For 7676/7721 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 8282 event pairs, 75 based on Foata normal form. 14/1201 useless extension candidates. Maximal degree in co-relation 4322. Up to 260 conditions per place. [2022-11-21 16:33:14,242 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 131 selfloop transitions, 17 changer transitions 24/296 dead transitions. [2022-11-21 16:33:14,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 296 transitions, 2759 flow [2022-11-21 16:33:14,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 16:33:14,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-21 16:33:14,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2143 transitions. [2022-11-21 16:33:14,249 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7593905031892275 [2022-11-21 16:33:14,249 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2143 transitions. [2022-11-21 16:33:14,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2143 transitions. [2022-11-21 16:33:14,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:14,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2143 transitions. [2022-11-21 16:33:14,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 126.05882352941177) internal successors, (2143), 17 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:14,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:14,261 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:14,262 INFO L175 Difference]: Start difference. First operand has 272 places, 236 transitions, 1883 flow. Second operand 17 states and 2143 transitions. [2022-11-21 16:33:14,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 296 transitions, 2759 flow [2022-11-21 16:33:14,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 296 transitions, 2649 flow, removed 52 selfloop flow, removed 7 redundant places. [2022-11-21 16:33:14,315 INFO L231 Difference]: Finished difference. Result has 286 places, 244 transitions, 1974 flow [2022-11-21 16:33:14,316 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1829, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1974, PETRI_PLACES=286, PETRI_TRANSITIONS=244} [2022-11-21 16:33:14,317 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 135 predicate places. [2022-11-21 16:33:14,317 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 244 transitions, 1974 flow [2022-11-21 16:33:14,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:14,318 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:14,318 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] [2022-11-21 16:33:14,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-21 16:33:14,318 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:14,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:14,319 INFO L85 PathProgramCache]: Analyzing trace with hash 588239554, now seen corresponding path program 9 times [2022-11-21 16:33:14,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:14,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073476277] [2022-11-21 16:33:14,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:14,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:14,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:14,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:14,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073476277] [2022-11-21 16:33:14,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073476277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:14,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:14,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:33:14,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006619285] [2022-11-21 16:33:14,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:14,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:33:14,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:14,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:33:14,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:33:14,567 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-21 16:33:14,569 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 244 transitions, 1974 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:14,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:14,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-21 16:33:14,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:15,157 INFO L130 PetriNetUnfolder]: 187/1232 cut-off events. [2022-11-21 16:33:15,158 INFO L131 PetriNetUnfolder]: For 7977/8021 co-relation queries the response was YES. [2022-11-21 16:33:15,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4439 conditions, 1232 events. 187/1232 cut-off events. For 7977/8021 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 8322 event pairs, 73 based on Foata normal form. 14/1202 useless extension candidates. Maximal degree in co-relation 4365. Up to 260 conditions per place. [2022-11-21 16:33:15,172 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 132 selfloop transitions, 22 changer transitions 25/303 dead transitions. [2022-11-21 16:33:15,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 303 transitions, 2900 flow [2022-11-21 16:33:15,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 16:33:15,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-21 16:33:15,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2024 transitions. [2022-11-21 16:33:15,176 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7620481927710844 [2022-11-21 16:33:15,176 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2024 transitions. [2022-11-21 16:33:15,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2024 transitions. [2022-11-21 16:33:15,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:15,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2024 transitions. [2022-11-21 16:33:15,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 126.5) internal successors, (2024), 16 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:15,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 166.0) internal successors, (2822), 17 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:15,185 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 166.0) internal successors, (2822), 17 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:15,185 INFO L175 Difference]: Start difference. First operand has 286 places, 244 transitions, 1974 flow. Second operand 16 states and 2024 transitions. [2022-11-21 16:33:15,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 303 transitions, 2900 flow [2022-11-21 16:33:15,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 303 transitions, 2827 flow, removed 32 selfloop flow, removed 9 redundant places. [2022-11-21 16:33:15,239 INFO L231 Difference]: Finished difference. Result has 294 places, 250 transitions, 2126 flow [2022-11-21 16:33:15,240 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1945, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2126, PETRI_PLACES=294, PETRI_TRANSITIONS=250} [2022-11-21 16:33:15,240 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 143 predicate places. [2022-11-21 16:33:15,240 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 250 transitions, 2126 flow [2022-11-21 16:33:15,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:15,241 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:15,241 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] [2022-11-21 16:33:15,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-21 16:33:15,242 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:15,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:15,242 INFO L85 PathProgramCache]: Analyzing trace with hash 391829636, now seen corresponding path program 10 times [2022-11-21 16:33:15,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:15,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82818492] [2022-11-21 16:33:15,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:15,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:15,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:15,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:15,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82818492] [2022-11-21 16:33:15,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82818492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:15,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:15,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:33:15,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192069752] [2022-11-21 16:33:15,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:15,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:33:15,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:15,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:33:15,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:33:15,470 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-21 16:33:15,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 250 transitions, 2126 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:15,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:15,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-21 16:33:15,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:16,074 INFO L130 PetriNetUnfolder]: 178/1229 cut-off events. [2022-11-21 16:33:16,074 INFO L131 PetriNetUnfolder]: For 7769/7820 co-relation queries the response was YES. [2022-11-21 16:33:16,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4391 conditions, 1229 events. 178/1229 cut-off events. For 7769/7820 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 8288 event pairs, 69 based on Foata normal form. 16/1204 useless extension candidates. Maximal degree in co-relation 4313. Up to 260 conditions per place. [2022-11-21 16:33:16,084 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 130 selfloop transitions, 23 changer transitions 21/298 dead transitions. [2022-11-21 16:33:16,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 298 transitions, 2923 flow [2022-11-21 16:33:16,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 16:33:16,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 16:33:16,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1896 transitions. [2022-11-21 16:33:16,096 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7614457831325301 [2022-11-21 16:33:16,097 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1896 transitions. [2022-11-21 16:33:16,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1896 transitions. [2022-11-21 16:33:16,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:16,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1896 transitions. [2022-11-21 16:33:16,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 126.4) internal successors, (1896), 15 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:16,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:16,121 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:16,121 INFO L175 Difference]: Start difference. First operand has 294 places, 250 transitions, 2126 flow. Second operand 15 states and 1896 transitions. [2022-11-21 16:33:16,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 298 transitions, 2923 flow [2022-11-21 16:33:16,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 298 transitions, 2790 flow, removed 41 selfloop flow, removed 13 redundant places. [2022-11-21 16:33:16,178 INFO L231 Difference]: Finished difference. Result has 294 places, 255 transitions, 2202 flow [2022-11-21 16:33:16,179 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=2051, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2202, PETRI_PLACES=294, PETRI_TRANSITIONS=255} [2022-11-21 16:33:16,179 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 143 predicate places. [2022-11-21 16:33:16,179 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 255 transitions, 2202 flow [2022-11-21 16:33:16,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:16,180 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:16,180 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] [2022-11-21 16:33:16,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-21 16:33:16,181 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:16,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:16,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1709104262, now seen corresponding path program 6 times [2022-11-21 16:33:16,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:16,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464481364] [2022-11-21 16:33:16,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:16,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:16,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:16,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:16,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:16,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464481364] [2022-11-21 16:33:16,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464481364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:16,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:16,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:33:16,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865840172] [2022-11-21 16:33:16,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:16,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:33:16,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:16,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:33:16,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:33:16,416 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-21 16:33:16,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 255 transitions, 2202 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:16,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:16,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-21 16:33:16,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:16,943 INFO L130 PetriNetUnfolder]: 142/1074 cut-off events. [2022-11-21 16:33:16,944 INFO L131 PetriNetUnfolder]: For 7061/7137 co-relation queries the response was YES. [2022-11-21 16:33:16,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3903 conditions, 1074 events. 142/1074 cut-off events. For 7061/7137 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 6849 event pairs, 38 based on Foata normal form. 27/1072 useless extension candidates. Maximal degree in co-relation 3828. Up to 240 conditions per place. [2022-11-21 16:33:16,955 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 122 selfloop transitions, 17 changer transitions 31/297 dead transitions. [2022-11-21 16:33:16,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 297 transitions, 2926 flow [2022-11-21 16:33:16,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 16:33:16,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-21 16:33:16,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2132 transitions. [2022-11-21 16:33:16,960 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7554925584691708 [2022-11-21 16:33:16,960 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2132 transitions. [2022-11-21 16:33:16,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2132 transitions. [2022-11-21 16:33:16,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:16,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2132 transitions. [2022-11-21 16:33:16,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 125.41176470588235) internal successors, (2132), 17 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:16,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:16,971 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:16,971 INFO L175 Difference]: Start difference. First operand has 294 places, 255 transitions, 2202 flow. Second operand 17 states and 2132 transitions. [2022-11-21 16:33:16,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 297 transitions, 2926 flow [2022-11-21 16:33:17,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 297 transitions, 2814 flow, removed 35 selfloop flow, removed 10 redundant places. [2022-11-21 16:33:17,024 INFO L231 Difference]: Finished difference. Result has 299 places, 239 transitions, 1913 flow [2022-11-21 16:33:17,024 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=2108, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1913, PETRI_PLACES=299, PETRI_TRANSITIONS=239} [2022-11-21 16:33:17,025 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 148 predicate places. [2022-11-21 16:33:17,025 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 239 transitions, 1913 flow [2022-11-21 16:33:17,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:17,025 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:17,026 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] [2022-11-21 16:33:17,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-21 16:33:17,026 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:17,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:17,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1754777480, now seen corresponding path program 7 times [2022-11-21 16:33:17,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:17,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895435851] [2022-11-21 16:33:17,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:17,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:17,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:17,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:17,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:17,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895435851] [2022-11-21 16:33:17,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895435851] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:17,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:17,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:33:17,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785756005] [2022-11-21 16:33:17,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:17,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:33:17,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:17,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:33:17,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:33:17,207 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-21 16:33:17,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 239 transitions, 1913 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:17,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:17,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-21 16:33:17,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:17,721 INFO L130 PetriNetUnfolder]: 130/1062 cut-off events. [2022-11-21 16:33:17,721 INFO L131 PetriNetUnfolder]: For 5910/5969 co-relation queries the response was YES. [2022-11-21 16:33:17,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3713 conditions, 1062 events. 130/1062 cut-off events. For 5910/5969 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 6844 event pairs, 45 based on Foata normal form. 14/1044 useless extension candidates. Maximal degree in co-relation 3639. Up to 241 conditions per place. [2022-11-21 16:33:17,732 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 118 selfloop transitions, 20 changer transitions 18/283 dead transitions. [2022-11-21 16:33:17,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 283 transitions, 2670 flow [2022-11-21 16:33:17,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 16:33:17,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-21 16:33:17,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2014 transitions. [2022-11-21 16:33:17,736 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7582831325301205 [2022-11-21 16:33:17,736 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2014 transitions. [2022-11-21 16:33:17,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2014 transitions. [2022-11-21 16:33:17,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:17,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2014 transitions. [2022-11-21 16:33:17,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 125.875) internal successors, (2014), 16 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:17,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 166.0) internal successors, (2822), 17 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:17,746 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 166.0) internal successors, (2822), 17 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:17,746 INFO L175 Difference]: Start difference. First operand has 299 places, 239 transitions, 1913 flow. Second operand 16 states and 2014 transitions. [2022-11-21 16:33:17,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 283 transitions, 2670 flow [2022-11-21 16:33:17,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 283 transitions, 2538 flow, removed 25 selfloop flow, removed 14 redundant places. [2022-11-21 16:33:17,791 INFO L231 Difference]: Finished difference. Result has 295 places, 241 transitions, 1922 flow [2022-11-21 16:33:17,792 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1830, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1922, PETRI_PLACES=295, PETRI_TRANSITIONS=241} [2022-11-21 16:33:17,792 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 144 predicate places. [2022-11-21 16:33:17,792 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 241 transitions, 1922 flow [2022-11-21 16:33:17,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:17,793 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:17,793 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] [2022-11-21 16:33:17,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-21 16:33:17,794 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:17,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:17,794 INFO L85 PathProgramCache]: Analyzing trace with hash -573603260, now seen corresponding path program 8 times [2022-11-21 16:33:17,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:17,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002977370] [2022-11-21 16:33:17,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:17,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:17,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:17,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:17,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002977370] [2022-11-21 16:33:17,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002977370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:17,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:17,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:33:17,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834792572] [2022-11-21 16:33:17,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:17,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:33:17,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:17,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:33:17,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:33:17,978 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-21 16:33:17,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 241 transitions, 1922 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:17,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:17,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-21 16:33:17,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:18,443 INFO L130 PetriNetUnfolder]: 124/1020 cut-off events. [2022-11-21 16:33:18,444 INFO L131 PetriNetUnfolder]: For 5232/5297 co-relation queries the response was YES. [2022-11-21 16:33:18,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3493 conditions, 1020 events. 124/1020 cut-off events. For 5232/5297 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 6399 event pairs, 41 based on Foata normal form. 17/1007 useless extension candidates. Maximal degree in co-relation 3417. Up to 236 conditions per place. [2022-11-21 16:33:18,454 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 111 selfloop transitions, 10 changer transitions 24/272 dead transitions. [2022-11-21 16:33:18,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 272 transitions, 2444 flow [2022-11-21 16:33:18,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 16:33:18,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 16:33:18,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1886 transitions. [2022-11-21 16:33:18,458 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.757429718875502 [2022-11-21 16:33:18,458 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1886 transitions. [2022-11-21 16:33:18,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1886 transitions. [2022-11-21 16:33:18,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:18,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1886 transitions. [2022-11-21 16:33:18,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 125.73333333333333) internal successors, (1886), 15 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:18,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:18,467 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:18,467 INFO L175 Difference]: Start difference. First operand has 295 places, 241 transitions, 1922 flow. Second operand 15 states and 1886 transitions. [2022-11-21 16:33:18,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 272 transitions, 2444 flow [2022-11-21 16:33:18,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 272 transitions, 2379 flow, removed 16 selfloop flow, removed 11 redundant places. [2022-11-21 16:33:18,511 INFO L231 Difference]: Finished difference. Result has 294 places, 227 transitions, 1640 flow [2022-11-21 16:33:18,511 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1871, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1640, PETRI_PLACES=294, PETRI_TRANSITIONS=227} [2022-11-21 16:33:18,512 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 143 predicate places. [2022-11-21 16:33:18,512 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 227 transitions, 1640 flow [2022-11-21 16:33:18,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:18,513 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:18,513 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] [2022-11-21 16:33:18,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-21 16:33:18,513 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:18,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:18,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1678375658, now seen corresponding path program 9 times [2022-11-21 16:33:18,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:18,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371315634] [2022-11-21 16:33:18,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:18,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:18,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:18,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:18,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371315634] [2022-11-21 16:33:18,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371315634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:18,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:18,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:33:18,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594160691] [2022-11-21 16:33:18,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:18,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:33:18,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:18,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:33:18,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:33:18,697 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-21 16:33:18,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 227 transitions, 1640 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:18,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:18,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-21 16:33:18,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:19,156 INFO L130 PetriNetUnfolder]: 120/1015 cut-off events. [2022-11-21 16:33:19,156 INFO L131 PetriNetUnfolder]: For 4686/4745 co-relation queries the response was YES. [2022-11-21 16:33:19,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3373 conditions, 1015 events. 120/1015 cut-off events. For 4686/4745 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 6399 event pairs, 51 based on Foata normal form. 10/994 useless extension candidates. Maximal degree in co-relation 3300. Up to 276 conditions per place. [2022-11-21 16:33:19,166 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 102 selfloop transitions, 19 changer transitions 19/267 dead transitions. [2022-11-21 16:33:19,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 267 transitions, 2258 flow [2022-11-21 16:33:19,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 16:33:19,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-21 16:33:19,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2131 transitions. [2022-11-21 16:33:19,170 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7551381998582566 [2022-11-21 16:33:19,170 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2131 transitions. [2022-11-21 16:33:19,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2131 transitions. [2022-11-21 16:33:19,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:19,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2131 transitions. [2022-11-21 16:33:19,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 125.3529411764706) internal successors, (2131), 17 states have internal predecessors, (2131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:19,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:19,179 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:19,179 INFO L175 Difference]: Start difference. First operand has 294 places, 227 transitions, 1640 flow. Second operand 17 states and 2131 transitions. [2022-11-21 16:33:19,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 267 transitions, 2258 flow [2022-11-21 16:33:19,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 267 transitions, 2150 flow, removed 33 selfloop flow, removed 14 redundant places. [2022-11-21 16:33:19,215 INFO L231 Difference]: Finished difference. Result has 288 places, 229 transitions, 1675 flow [2022-11-21 16:33:19,215 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1675, PETRI_PLACES=288, PETRI_TRANSITIONS=229} [2022-11-21 16:33:19,216 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 137 predicate places. [2022-11-21 16:33:19,216 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 229 transitions, 1675 flow [2022-11-21 16:33:19,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:19,216 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:19,216 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] [2022-11-21 16:33:19,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-21 16:33:19,217 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:19,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:19,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1466754202, now seen corresponding path program 11 times [2022-11-21 16:33:19,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:19,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677389671] [2022-11-21 16:33:19,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:19,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:19,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:19,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:19,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677389671] [2022-11-21 16:33:19,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677389671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:19,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:19,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:33:19,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119679121] [2022-11-21 16:33:19,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:19,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:33:19,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:19,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:33:19,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:33:19,399 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-21 16:33:19,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 229 transitions, 1675 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:19,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:19,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-21 16:33:19,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:19,844 INFO L130 PetriNetUnfolder]: 135/1081 cut-off events. [2022-11-21 16:33:19,844 INFO L131 PetriNetUnfolder]: For 4184/4229 co-relation queries the response was YES. [2022-11-21 16:33:19,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3399 conditions, 1081 events. 135/1081 cut-off events. For 4184/4229 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 6912 event pairs, 60 based on Foata normal form. 12/1054 useless extension candidates. Maximal degree in co-relation 3325. Up to 206 conditions per place. [2022-11-21 16:33:19,855 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 98 selfloop transitions, 12 changer transitions 28/261 dead transitions. [2022-11-21 16:33:19,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 261 transitions, 2127 flow [2022-11-21 16:33:19,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 16:33:19,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 16:33:19,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1889 transitions. [2022-11-21 16:33:19,859 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7586345381526104 [2022-11-21 16:33:19,859 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1889 transitions. [2022-11-21 16:33:19,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1889 transitions. [2022-11-21 16:33:19,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:19,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1889 transitions. [2022-11-21 16:33:19,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 125.93333333333334) internal successors, (1889), 15 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:19,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:19,872 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:19,873 INFO L175 Difference]: Start difference. First operand has 288 places, 229 transitions, 1675 flow. Second operand 15 states and 1889 transitions. [2022-11-21 16:33:19,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 261 transitions, 2127 flow [2022-11-21 16:33:19,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 261 transitions, 2059 flow, removed 16 selfloop flow, removed 12 redundant places. [2022-11-21 16:33:19,908 INFO L231 Difference]: Finished difference. Result has 285 places, 213 transitions, 1453 flow [2022-11-21 16:33:19,908 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1619, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1453, PETRI_PLACES=285, PETRI_TRANSITIONS=213} [2022-11-21 16:33:19,909 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 134 predicate places. [2022-11-21 16:33:19,909 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 213 transitions, 1453 flow [2022-11-21 16:33:19,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:19,909 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:19,910 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] [2022-11-21 16:33:19,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-21 16:33:19,910 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:19,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:19,911 INFO L85 PathProgramCache]: Analyzing trace with hash 482428932, now seen corresponding path program 10 times [2022-11-21 16:33:19,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:19,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92278792] [2022-11-21 16:33:19,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:19,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:20,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:20,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:20,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92278792] [2022-11-21 16:33:20,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92278792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:20,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:20,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:33:20,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313733980] [2022-11-21 16:33:20,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:20,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:33:20,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:20,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:33:20,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:33:20,112 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-21 16:33:20,113 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 213 transitions, 1453 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:20,113 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:20,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-21 16:33:20,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:20,530 INFO L130 PetriNetUnfolder]: 106/911 cut-off events. [2022-11-21 16:33:20,530 INFO L131 PetriNetUnfolder]: For 3748/3807 co-relation queries the response was YES. [2022-11-21 16:33:20,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2889 conditions, 911 events. 106/911 cut-off events. For 3748/3807 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 5383 event pairs, 48 based on Foata normal form. 9/888 useless extension candidates. Maximal degree in co-relation 2818. Up to 257 conditions per place. [2022-11-21 16:33:20,539 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 85 selfloop transitions, 5 changer transitions 29/239 dead transitions. [2022-11-21 16:33:20,539 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 239 transitions, 1818 flow [2022-11-21 16:33:20,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 16:33:20,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 16:33:20,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1880 transitions. [2022-11-21 16:33:20,543 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7550200803212851 [2022-11-21 16:33:20,543 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1880 transitions. [2022-11-21 16:33:20,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1880 transitions. [2022-11-21 16:33:20,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:20,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1880 transitions. [2022-11-21 16:33:20,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 125.33333333333333) internal successors, (1880), 15 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:20,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:20,550 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:20,551 INFO L175 Difference]: Start difference. First operand has 285 places, 213 transitions, 1453 flow. Second operand 15 states and 1880 transitions. [2022-11-21 16:33:20,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 239 transitions, 1818 flow [2022-11-21 16:33:20,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 239 transitions, 1720 flow, removed 17 selfloop flow, removed 17 redundant places. [2022-11-21 16:33:20,581 INFO L231 Difference]: Finished difference. Result has 269 places, 194 transitions, 1110 flow [2022-11-21 16:33:20,581 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1369, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1110, PETRI_PLACES=269, PETRI_TRANSITIONS=194} [2022-11-21 16:33:20,582 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 118 predicate places. [2022-11-21 16:33:20,582 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 194 transitions, 1110 flow [2022-11-21 16:33:20,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:20,582 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:20,583 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] [2022-11-21 16:33:20,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-21 16:33:20,583 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:20,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:20,583 INFO L85 PathProgramCache]: Analyzing trace with hash 910658172, now seen corresponding path program 12 times [2022-11-21 16:33:20,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:20,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224983493] [2022-11-21 16:33:20,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:20,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:20,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:20,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:20,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224983493] [2022-11-21 16:33:20,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224983493] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:20,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:20,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:33:20,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041571257] [2022-11-21 16:33:20,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:20,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:33:20,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:20,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:33:20,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:33:20,764 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-21 16:33:20,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 194 transitions, 1110 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:20,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:20,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-21 16:33:20,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:21,185 INFO L130 PetriNetUnfolder]: 110/895 cut-off events. [2022-11-21 16:33:21,185 INFO L131 PetriNetUnfolder]: For 2726/2750 co-relation queries the response was YES. [2022-11-21 16:33:21,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2559 conditions, 895 events. 110/895 cut-off events. For 2726/2750 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5154 event pairs, 54 based on Foata normal form. 8/869 useless extension candidates. Maximal degree in co-relation 2495. Up to 189 conditions per place. [2022-11-21 16:33:21,194 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 79 selfloop transitions, 21 changer transitions 22/241 dead transitions. [2022-11-21 16:33:21,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 241 transitions, 1691 flow [2022-11-21 16:33:21,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 16:33:21,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 16:33:21,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1898 transitions. [2022-11-21 16:33:21,197 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7622489959839357 [2022-11-21 16:33:21,197 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1898 transitions. [2022-11-21 16:33:21,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1898 transitions. [2022-11-21 16:33:21,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:21,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1898 transitions. [2022-11-21 16:33:21,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 126.53333333333333) internal successors, (1898), 15 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:21,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:21,204 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:21,204 INFO L175 Difference]: Start difference. First operand has 269 places, 194 transitions, 1110 flow. Second operand 15 states and 1898 transitions. [2022-11-21 16:33:21,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 241 transitions, 1691 flow [2022-11-21 16:33:21,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 241 transitions, 1572 flow, removed 25 selfloop flow, removed 18 redundant places. [2022-11-21 16:33:21,225 INFO L231 Difference]: Finished difference. Result has 251 places, 198 transitions, 1148 flow [2022-11-21 16:33:21,226 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1148, PETRI_PLACES=251, PETRI_TRANSITIONS=198} [2022-11-21 16:33:21,226 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 100 predicate places. [2022-11-21 16:33:21,226 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 198 transitions, 1148 flow [2022-11-21 16:33:21,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:21,227 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:21,227 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] [2022-11-21 16:33:21,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-21 16:33:21,227 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:21,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:21,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1352951982, now seen corresponding path program 13 times [2022-11-21 16:33:21,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:21,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719805173] [2022-11-21 16:33:21,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:21,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:21,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:21,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:21,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719805173] [2022-11-21 16:33:21,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719805173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:21,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:21,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:33:21,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359402020] [2022-11-21 16:33:21,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:21,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:33:21,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:21,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:33:21,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:33:21,445 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-21 16:33:21,446 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 198 transitions, 1148 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:21,446 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:21,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-21 16:33:21,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:21,946 INFO L130 PetriNetUnfolder]: 108/885 cut-off events. [2022-11-21 16:33:21,946 INFO L131 PetriNetUnfolder]: For 2599/2621 co-relation queries the response was YES. [2022-11-21 16:33:21,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2453 conditions, 885 events. 108/885 cut-off events. For 2599/2621 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5021 event pairs, 51 based on Foata normal form. 6/856 useless extension candidates. Maximal degree in co-relation 2395. Up to 166 conditions per place. [2022-11-21 16:33:21,955 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 90 selfloop transitions, 17 changer transitions 29/255 dead transitions. [2022-11-21 16:33:21,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 255 transitions, 1708 flow [2022-11-21 16:33:21,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 16:33:21,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-21 16:33:21,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2392 transitions. [2022-11-21 16:33:21,960 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7584020291693088 [2022-11-21 16:33:21,960 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2392 transitions. [2022-11-21 16:33:21,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2392 transitions. [2022-11-21 16:33:21,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:21,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2392 transitions. [2022-11-21 16:33:21,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 125.89473684210526) internal successors, (2392), 19 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:21,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 166.0) internal successors, (3320), 20 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:21,971 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 166.0) internal successors, (3320), 20 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:21,971 INFO L175 Difference]: Start difference. First operand has 251 places, 198 transitions, 1148 flow. Second operand 19 states and 2392 transitions. [2022-11-21 16:33:21,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 255 transitions, 1708 flow [2022-11-21 16:33:21,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 255 transitions, 1607 flow, removed 35 selfloop flow, removed 9 redundant places. [2022-11-21 16:33:21,994 INFO L231 Difference]: Finished difference. Result has 262 places, 192 transitions, 1049 flow [2022-11-21 16:33:21,995 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1075, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1049, PETRI_PLACES=262, PETRI_TRANSITIONS=192} [2022-11-21 16:33:21,995 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 111 predicate places. [2022-11-21 16:33:21,995 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 192 transitions, 1049 flow [2022-11-21 16:33:21,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:21,996 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:21,996 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] [2022-11-21 16:33:21,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-21 16:33:21,997 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:21,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:21,997 INFO L85 PathProgramCache]: Analyzing trace with hash -659620502, now seen corresponding path program 14 times [2022-11-21 16:33:21,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:21,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556610128] [2022-11-21 16:33:21,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:21,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:22,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:22,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:22,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556610128] [2022-11-21 16:33:22,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556610128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:22,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:22,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:33:22,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239323356] [2022-11-21 16:33:22,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:22,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:33:22,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:22,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:33:22,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:33:22,205 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-21 16:33:22,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 192 transitions, 1049 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:22,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:22,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-21 16:33:22,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:22,624 INFO L130 PetriNetUnfolder]: 100/852 cut-off events. [2022-11-21 16:33:22,625 INFO L131 PetriNetUnfolder]: For 2040/2062 co-relation queries the response was YES. [2022-11-21 16:33:22,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2279 conditions, 852 events. 100/852 cut-off events. For 2040/2062 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4800 event pairs, 51 based on Foata normal form. 6/823 useless extension candidates. Maximal degree in co-relation 2219. Up to 186 conditions per place. [2022-11-21 16:33:22,632 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 74 selfloop transitions, 12 changer transitions 26/231 dead transitions. [2022-11-21 16:33:22,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 231 transitions, 1486 flow [2022-11-21 16:33:22,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 16:33:22,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-21 16:33:22,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2134 transitions. [2022-11-21 16:33:22,636 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7562012756909993 [2022-11-21 16:33:22,636 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2134 transitions. [2022-11-21 16:33:22,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2134 transitions. [2022-11-21 16:33:22,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:22,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2134 transitions. [2022-11-21 16:33:22,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 125.52941176470588) internal successors, (2134), 17 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:22,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:22,643 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:22,643 INFO L175 Difference]: Start difference. First operand has 262 places, 192 transitions, 1049 flow. Second operand 17 states and 2134 transitions. [2022-11-21 16:33:22,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 231 transitions, 1486 flow [2022-11-21 16:33:22,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 231 transitions, 1379 flow, removed 27 selfloop flow, removed 19 redundant places. [2022-11-21 16:33:22,661 INFO L231 Difference]: Finished difference. Result has 256 places, 185 transitions, 934 flow [2022-11-21 16:33:22,661 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=971, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=934, PETRI_PLACES=256, PETRI_TRANSITIONS=185} [2022-11-21 16:33:22,662 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 105 predicate places. [2022-11-21 16:33:22,662 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 185 transitions, 934 flow [2022-11-21 16:33:22,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:22,662 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:22,662 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] [2022-11-21 16:33:22,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-21 16:33:22,663 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:22,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:22,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1936508524, now seen corresponding path program 15 times [2022-11-21 16:33:22,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:22,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704644171] [2022-11-21 16:33:22,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:22,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:22,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:22,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:22,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704644171] [2022-11-21 16:33:22,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704644171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:22,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:22,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:33:22,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768820784] [2022-11-21 16:33:22,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:22,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:33:22,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:22,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:33:22,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:33:22,843 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-21 16:33:22,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 185 transitions, 934 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:22,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:22,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-21 16:33:22,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:23,221 INFO L130 PetriNetUnfolder]: 93/791 cut-off events. [2022-11-21 16:33:23,221 INFO L131 PetriNetUnfolder]: For 1825/1845 co-relation queries the response was YES. [2022-11-21 16:33:23,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2060 conditions, 791 events. 93/791 cut-off events. For 1825/1845 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4195 event pairs, 52 based on Foata normal form. 6/761 useless extension candidates. Maximal degree in co-relation 2004. Up to 166 conditions per place. [2022-11-21 16:33:23,228 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 64 selfloop transitions, 4 changer transitions 30/213 dead transitions. [2022-11-21 16:33:23,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 213 transitions, 1226 flow [2022-11-21 16:33:23,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 16:33:23,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-21 16:33:23,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2003 transitions. [2022-11-21 16:33:23,231 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7541415662650602 [2022-11-21 16:33:23,231 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2003 transitions. [2022-11-21 16:33:23,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2003 transitions. [2022-11-21 16:33:23,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:23,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2003 transitions. [2022-11-21 16:33:23,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 125.1875) internal successors, (2003), 16 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:23,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 166.0) internal successors, (2822), 17 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:23,237 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 166.0) internal successors, (2822), 17 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:23,237 INFO L175 Difference]: Start difference. First operand has 256 places, 185 transitions, 934 flow. Second operand 16 states and 2003 transitions. [2022-11-21 16:33:23,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 213 transitions, 1226 flow [2022-11-21 16:33:23,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 213 transitions, 1153 flow, removed 16 selfloop flow, removed 18 redundant places. [2022-11-21 16:33:23,252 INFO L231 Difference]: Finished difference. Result has 241 places, 165 transitions, 706 flow [2022-11-21 16:33:23,252 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=871, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=706, PETRI_PLACES=241, PETRI_TRANSITIONS=165} [2022-11-21 16:33:23,253 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 90 predicate places. [2022-11-21 16:33:23,253 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 165 transitions, 706 flow [2022-11-21 16:33:23,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:23,254 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:23,254 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] [2022-11-21 16:33:23,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-21 16:33:23,254 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:23,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:23,255 INFO L85 PathProgramCache]: Analyzing trace with hash 804288182, now seen corresponding path program 11 times [2022-11-21 16:33:23,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:23,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630395950] [2022-11-21 16:33:23,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:23,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:23,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:23,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:23,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:23,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630395950] [2022-11-21 16:33:23,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630395950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:23,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:23,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:33:23,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693011222] [2022-11-21 16:33:23,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:23,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:33:23,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:23,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:33:23,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:33:23,446 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-21 16:33:23,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 165 transitions, 706 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:23,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:23,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-21 16:33:23,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:23,897 INFO L130 PetriNetUnfolder]: 73/686 cut-off events. [2022-11-21 16:33:23,898 INFO L131 PetriNetUnfolder]: For 1703/1722 co-relation queries the response was YES. [2022-11-21 16:33:23,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1806 conditions, 686 events. 73/686 cut-off events. For 1703/1722 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3429 event pairs, 34 based on Foata normal form. 3/660 useless extension candidates. Maximal degree in co-relation 1759. Up to 155 conditions per place. [2022-11-21 16:33:23,903 INFO L137 encePairwiseOnDemand]: 151/166 looper letters, 66 selfloop transitions, 7 changer transitions 26/214 dead transitions. [2022-11-21 16:33:23,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 214 transitions, 1211 flow [2022-11-21 16:33:23,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 16:33:23,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-21 16:33:23,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2370 transitions. [2022-11-21 16:33:23,907 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.75142675967026 [2022-11-21 16:33:23,907 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2370 transitions. [2022-11-21 16:33:23,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2370 transitions. [2022-11-21 16:33:23,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:23,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2370 transitions. [2022-11-21 16:33:23,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 124.73684210526316) internal successors, (2370), 19 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:23,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 166.0) internal successors, (3320), 20 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:23,915 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 166.0) internal successors, (3320), 20 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:23,915 INFO L175 Difference]: Start difference. First operand has 241 places, 165 transitions, 706 flow. Second operand 19 states and 2370 transitions. [2022-11-21 16:33:23,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 214 transitions, 1211 flow [2022-11-21 16:33:23,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 214 transitions, 1157 flow, removed 18 selfloop flow, removed 8 redundant places. [2022-11-21 16:33:23,927 INFO L231 Difference]: Finished difference. Result has 231 places, 163 transitions, 698 flow [2022-11-21 16:33:23,927 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=698, PETRI_PLACES=231, PETRI_TRANSITIONS=163} [2022-11-21 16:33:23,928 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 80 predicate places. [2022-11-21 16:33:23,928 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 163 transitions, 698 flow [2022-11-21 16:33:23,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:23,928 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:23,929 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] [2022-11-21 16:33:23,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-21 16:33:23,929 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:23,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:23,929 INFO L85 PathProgramCache]: Analyzing trace with hash 2009109288, now seen corresponding path program 12 times [2022-11-21 16:33:23,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:23,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833633019] [2022-11-21 16:33:23,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:23,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:24,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:24,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:24,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833633019] [2022-11-21 16:33:24,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833633019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:24,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:24,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:33:24,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731211751] [2022-11-21 16:33:24,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:24,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:33:24,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:24,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:33:24,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:33:24,105 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-21 16:33:24,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 163 transitions, 698 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:24,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:24,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-21 16:33:24,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:24,445 INFO L130 PetriNetUnfolder]: 71/670 cut-off events. [2022-11-21 16:33:24,445 INFO L131 PetriNetUnfolder]: For 1760/1774 co-relation queries the response was YES. [2022-11-21 16:33:24,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1772 conditions, 670 events. 71/670 cut-off events. For 1760/1774 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3280 event pairs, 34 based on Foata normal form. 2/643 useless extension candidates. Maximal degree in co-relation 1717. Up to 182 conditions per place. [2022-11-21 16:33:24,450 INFO L137 encePairwiseOnDemand]: 152/166 looper letters, 47 selfloop transitions, 15 changer transitions 16/193 dead transitions. [2022-11-21 16:33:24,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 193 transitions, 1195 flow [2022-11-21 16:33:24,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 16:33:24,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 16:33:24,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1864 transitions. [2022-11-21 16:33:24,453 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7485943775100402 [2022-11-21 16:33:24,453 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1864 transitions. [2022-11-21 16:33:24,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1864 transitions. [2022-11-21 16:33:24,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:24,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1864 transitions. [2022-11-21 16:33:24,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 124.26666666666667) internal successors, (1864), 15 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:24,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:24,459 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:24,460 INFO L175 Difference]: Start difference. First operand has 231 places, 163 transitions, 698 flow. Second operand 15 states and 1864 transitions. [2022-11-21 16:33:24,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 193 transitions, 1195 flow [2022-11-21 16:33:24,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 193 transitions, 1060 flow, removed 63 selfloop flow, removed 16 redundant places. [2022-11-21 16:33:24,472 INFO L231 Difference]: Finished difference. Result has 224 places, 173 transitions, 824 flow [2022-11-21 16:33:24,473 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=824, PETRI_PLACES=224, PETRI_TRANSITIONS=173} [2022-11-21 16:33:24,473 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 73 predicate places. [2022-11-21 16:33:24,473 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 173 transitions, 824 flow [2022-11-21 16:33:24,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:24,474 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:24,474 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] [2022-11-21 16:33:24,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-21 16:33:24,474 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:24,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:24,475 INFO L85 PathProgramCache]: Analyzing trace with hash -806170450, now seen corresponding path program 13 times [2022-11-21 16:33:24,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:24,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059901203] [2022-11-21 16:33:24,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:24,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:24,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:24,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:24,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059901203] [2022-11-21 16:33:24,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059901203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:24,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:24,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:33:24,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324061629] [2022-11-21 16:33:24,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:24,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:33:24,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:24,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:33:24,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:33:24,656 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-21 16:33:24,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 173 transitions, 824 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:24,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:24,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-21 16:33:24,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:25,105 INFO L130 PetriNetUnfolder]: 71/658 cut-off events. [2022-11-21 16:33:25,106 INFO L131 PetriNetUnfolder]: For 1542/1556 co-relation queries the response was YES. [2022-11-21 16:33:25,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1754 conditions, 658 events. 71/658 cut-off events. For 1542/1556 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3167 event pairs, 34 based on Foata normal form. 2/631 useless extension candidates. Maximal degree in co-relation 1704. Up to 158 conditions per place. [2022-11-21 16:33:25,110 INFO L137 encePairwiseOnDemand]: 154/166 looper letters, 68 selfloop transitions, 9 changer transitions 21/213 dead transitions. [2022-11-21 16:33:25,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 213 transitions, 1311 flow [2022-11-21 16:33:25,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 16:33:25,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 16:33:25,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2245 transitions. [2022-11-21 16:33:25,112 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.751338688085676 [2022-11-21 16:33:25,113 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2245 transitions. [2022-11-21 16:33:25,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2245 transitions. [2022-11-21 16:33:25,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:25,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2245 transitions. [2022-11-21 16:33:25,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 124.72222222222223) internal successors, (2245), 18 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:25,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 166.0) internal successors, (3154), 19 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:25,120 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 166.0) internal successors, (3154), 19 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:25,120 INFO L175 Difference]: Start difference. First operand has 224 places, 173 transitions, 824 flow. Second operand 18 states and 2245 transitions. [2022-11-21 16:33:25,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 213 transitions, 1311 flow [2022-11-21 16:33:25,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 213 transitions, 1204 flow, removed 43 selfloop flow, removed 9 redundant places. [2022-11-21 16:33:25,133 INFO L231 Difference]: Finished difference. Result has 237 places, 172 transitions, 807 flow [2022-11-21 16:33:25,133 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=807, PETRI_PLACES=237, PETRI_TRANSITIONS=172} [2022-11-21 16:33:25,134 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 86 predicate places. [2022-11-21 16:33:25,134 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 172 transitions, 807 flow [2022-11-21 16:33:25,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:25,134 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:25,135 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] [2022-11-21 16:33:25,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-21 16:33:25,135 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:25,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:25,136 INFO L85 PathProgramCache]: Analyzing trace with hash 985576502, now seen corresponding path program 14 times [2022-11-21 16:33:25,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:25,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038840444] [2022-11-21 16:33:25,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:25,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:25,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:25,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:25,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038840444] [2022-11-21 16:33:25,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038840444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:25,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:25,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:33:25,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442494127] [2022-11-21 16:33:25,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:25,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:33:25,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:25,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:33:25,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:33:25,352 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-21 16:33:25,353 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 172 transitions, 807 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:25,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:25,354 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-21 16:33:25,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:25,755 INFO L130 PetriNetUnfolder]: 66/636 cut-off events. [2022-11-21 16:33:25,755 INFO L131 PetriNetUnfolder]: For 1290/1304 co-relation queries the response was YES. [2022-11-21 16:33:25,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1669 conditions, 636 events. 66/636 cut-off events. For 1290/1304 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2995 event pairs, 35 based on Foata normal form. 2/608 useless extension candidates. Maximal degree in co-relation 1613. Up to 176 conditions per place. [2022-11-21 16:33:25,758 INFO L137 encePairwiseOnDemand]: 154/166 looper letters, 44 selfloop transitions, 11 changer transitions 20/190 dead transitions. [2022-11-21 16:33:25,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 190 transitions, 1136 flow [2022-11-21 16:33:25,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 16:33:25,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-21 16:33:25,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2105 transitions. [2022-11-21 16:33:25,761 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7459248759744862 [2022-11-21 16:33:25,761 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2105 transitions. [2022-11-21 16:33:25,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2105 transitions. [2022-11-21 16:33:25,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:25,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2105 transitions. [2022-11-21 16:33:25,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 123.82352941176471) internal successors, (2105), 17 states have internal predecessors, (2105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:25,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:25,768 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:25,768 INFO L175 Difference]: Start difference. First operand has 237 places, 172 transitions, 807 flow. Second operand 17 states and 2105 transitions. [2022-11-21 16:33:25,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 190 transitions, 1136 flow [2022-11-21 16:33:25,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 190 transitions, 1044 flow, removed 30 selfloop flow, removed 18 redundant places. [2022-11-21 16:33:25,781 INFO L231 Difference]: Finished difference. Result has 229 places, 169 transitions, 763 flow [2022-11-21 16:33:25,781 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=763, PETRI_PLACES=229, PETRI_TRANSITIONS=169} [2022-11-21 16:33:25,782 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 78 predicate places. [2022-11-21 16:33:25,782 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 169 transitions, 763 flow [2022-11-21 16:33:25,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:25,782 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:25,782 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] [2022-11-21 16:33:25,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-21 16:33:25,783 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:25,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:25,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1239501808, now seen corresponding path program 15 times [2022-11-21 16:33:25,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:25,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114132940] [2022-11-21 16:33:25,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:25,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:25,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:25,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:25,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114132940] [2022-11-21 16:33:25,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114132940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:25,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:25,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:33:25,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646035472] [2022-11-21 16:33:25,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:25,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:33:25,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:25,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:33:25,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:33:25,976 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-21 16:33:25,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 169 transitions, 763 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:25,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:25,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-21 16:33:25,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:26,358 INFO L130 PetriNetUnfolder]: 61/576 cut-off events. [2022-11-21 16:33:26,359 INFO L131 PetriNetUnfolder]: For 997/1011 co-relation queries the response was YES. [2022-11-21 16:33:26,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1430 conditions, 576 events. 61/576 cut-off events. For 997/1011 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2513 event pairs, 34 based on Foata normal form. 2/549 useless extension candidates. Maximal degree in co-relation 1382. Up to 158 conditions per place. [2022-11-21 16:33:26,364 INFO L137 encePairwiseOnDemand]: 154/166 looper letters, 37 selfloop transitions, 0 changer transitions 26/176 dead transitions. [2022-11-21 16:33:26,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 176 transitions, 907 flow [2022-11-21 16:33:26,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 16:33:26,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 16:33:26,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1855 transitions. [2022-11-21 16:33:26,367 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7449799196787149 [2022-11-21 16:33:26,367 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1855 transitions. [2022-11-21 16:33:26,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1855 transitions. [2022-11-21 16:33:26,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:26,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1855 transitions. [2022-11-21 16:33:26,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 123.66666666666667) internal successors, (1855), 15 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:26,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:26,374 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:26,374 INFO L175 Difference]: Start difference. First operand has 229 places, 169 transitions, 763 flow. Second operand 15 states and 1855 transitions. [2022-11-21 16:33:26,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 176 transitions, 907 flow [2022-11-21 16:33:26,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 176 transitions, 854 flow, removed 15 selfloop flow, removed 9 redundant places. [2022-11-21 16:33:26,384 INFO L231 Difference]: Finished difference. Result has 227 places, 150 transitions, 524 flow [2022-11-21 16:33:26,385 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=524, PETRI_PLACES=227, PETRI_TRANSITIONS=150} [2022-11-21 16:33:26,387 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 76 predicate places. [2022-11-21 16:33:26,387 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 150 transitions, 524 flow [2022-11-21 16:33:26,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:26,387 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:26,388 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] [2022-11-21 16:33:26,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-21 16:33:26,388 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:26,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:26,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1682798381, now seen corresponding path program 1 times [2022-11-21 16:33:26,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:26,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304758841] [2022-11-21 16:33:26,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:26,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:27,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:27,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:27,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304758841] [2022-11-21 16:33:27,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304758841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:27,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:27,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-21 16:33:27,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113729001] [2022-11-21 16:33:27,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:27,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 16:33:27,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:27,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 16:33:27,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2022-11-21 16:33:27,392 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-21 16:33:27,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 150 transitions, 524 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:27,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:27,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-21 16:33:27,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:31,239 INFO L130 PetriNetUnfolder]: 451/1722 cut-off events. [2022-11-21 16:33:31,239 INFO L131 PetriNetUnfolder]: For 2129/2139 co-relation queries the response was YES. [2022-11-21 16:33:31,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4035 conditions, 1722 events. 451/1722 cut-off events. For 2129/2139 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 10737 event pairs, 44 based on Foata normal form. 3/1647 useless extension candidates. Maximal degree in co-relation 3990. Up to 177 conditions per place. [2022-11-21 16:33:31,248 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 192 selfloop transitions, 35 changer transitions 39/358 dead transitions. [2022-11-21 16:33:31,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 358 transitions, 2130 flow [2022-11-21 16:33:31,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-21 16:33:31,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-21 16:33:31,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3838 transitions. [2022-11-21 16:33:31,253 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6248778899381309 [2022-11-21 16:33:31,253 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3838 transitions. [2022-11-21 16:33:31,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3838 transitions. [2022-11-21 16:33:31,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:31,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3838 transitions. [2022-11-21 16:33:31,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 103.72972972972973) internal successors, (3838), 37 states have internal predecessors, (3838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:31,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 166.0) internal successors, (6308), 38 states have internal predecessors, (6308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:31,267 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 166.0) internal successors, (6308), 38 states have internal predecessors, (6308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:31,267 INFO L175 Difference]: Start difference. First operand has 227 places, 150 transitions, 524 flow. Second operand 37 states and 3838 transitions. [2022-11-21 16:33:31,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 358 transitions, 2130 flow [2022-11-21 16:33:31,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 358 transitions, 1852 flow, removed 134 selfloop flow, removed 14 redundant places. [2022-11-21 16:33:31,280 INFO L231 Difference]: Finished difference. Result has 243 places, 177 transitions, 777 flow [2022-11-21 16:33:31,280 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=777, PETRI_PLACES=243, PETRI_TRANSITIONS=177} [2022-11-21 16:33:31,281 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 92 predicate places. [2022-11-21 16:33:31,281 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 177 transitions, 777 flow [2022-11-21 16:33:31,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:31,281 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:31,282 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] [2022-11-21 16:33:31,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-21 16:33:31,282 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:31,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:31,283 INFO L85 PathProgramCache]: Analyzing trace with hash 564312921, now seen corresponding path program 2 times [2022-11-21 16:33:31,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:31,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25238459] [2022-11-21 16:33:31,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:31,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:32,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:32,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:32,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25238459] [2022-11-21 16:33:32,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25238459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:32,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:32,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-21 16:33:32,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673288039] [2022-11-21 16:33:32,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:32,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 16:33:32,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:32,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 16:33:32,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-21 16:33:32,224 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-21 16:33:32,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 177 transitions, 777 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:32,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:32,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-21 16:33:32,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:36,495 INFO L130 PetriNetUnfolder]: 711/2528 cut-off events. [2022-11-21 16:33:36,495 INFO L131 PetriNetUnfolder]: For 7057/7067 co-relation queries the response was YES. [2022-11-21 16:33:36,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7243 conditions, 2528 events. 711/2528 cut-off events. For 7057/7067 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 18152 event pairs, 46 based on Foata normal form. 4/2416 useless extension candidates. Maximal degree in co-relation 7181. Up to 773 conditions per place. [2022-11-21 16:33:36,511 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 231 selfloop transitions, 46 changer transitions 39/408 dead transitions. [2022-11-21 16:33:36,511 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 408 transitions, 2902 flow [2022-11-21 16:33:36,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:33:36,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:33:36,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3674 transitions. [2022-11-21 16:33:36,516 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6323580034423408 [2022-11-21 16:33:36,516 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3674 transitions. [2022-11-21 16:33:36,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3674 transitions. [2022-11-21 16:33:36,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:36,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3674 transitions. [2022-11-21 16:33:36,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 104.97142857142858) internal successors, (3674), 35 states have internal predecessors, (3674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:36,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:36,529 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:36,529 INFO L175 Difference]: Start difference. First operand has 243 places, 177 transitions, 777 flow. Second operand 35 states and 3674 transitions. [2022-11-21 16:33:36,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 408 transitions, 2902 flow [2022-11-21 16:33:36,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 408 transitions, 2467 flow, removed 179 selfloop flow, removed 21 redundant places. [2022-11-21 16:33:36,561 INFO L231 Difference]: Finished difference. Result has 271 places, 208 transitions, 1257 flow [2022-11-21 16:33:36,562 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1257, PETRI_PLACES=271, PETRI_TRANSITIONS=208} [2022-11-21 16:33:36,562 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 120 predicate places. [2022-11-21 16:33:36,563 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 208 transitions, 1257 flow [2022-11-21 16:33:36,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:36,563 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:36,563 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] [2022-11-21 16:33:36,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-21 16:33:36,564 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:36,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:36,564 INFO L85 PathProgramCache]: Analyzing trace with hash 328974259, now seen corresponding path program 3 times [2022-11-21 16:33:36,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:36,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837985166] [2022-11-21 16:33:36,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:36,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:37,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:37,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:37,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837985166] [2022-11-21 16:33:37,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837985166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:37,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:37,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-21 16:33:37,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174845492] [2022-11-21 16:33:37,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:37,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 16:33:37,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:37,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 16:33:37,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-21 16:33:37,497 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-21 16:33:37,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 208 transitions, 1257 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:37,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:37,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-21 16:33:37,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:44,836 INFO L130 PetriNetUnfolder]: 754/2713 cut-off events. [2022-11-21 16:33:44,836 INFO L131 PetriNetUnfolder]: For 8220/8233 co-relation queries the response was YES. [2022-11-21 16:33:44,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8460 conditions, 2713 events. 754/2713 cut-off events. For 8220/8233 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 20068 event pairs, 34 based on Foata normal form. 9/2603 useless extension candidates. Maximal degree in co-relation 8382. Up to 240 conditions per place. [2022-11-21 16:33:44,855 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 385 selfloop transitions, 34 changer transitions 124/635 dead transitions. [2022-11-21 16:33:44,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 635 transitions, 5705 flow [2022-11-21 16:33:44,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-11-21 16:33:44,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2022-11-21 16:33:44,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 6663 transitions. [2022-11-21 16:33:44,863 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.617516218721038 [2022-11-21 16:33:44,863 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 6663 transitions. [2022-11-21 16:33:44,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 6663 transitions. [2022-11-21 16:33:44,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:44,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 6663 transitions. [2022-11-21 16:33:44,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 102.50769230769231) internal successors, (6663), 65 states have internal predecessors, (6663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:44,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 166.0) internal successors, (10956), 66 states have internal predecessors, (10956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:44,886 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 166.0) internal successors, (10956), 66 states have internal predecessors, (10956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:44,886 INFO L175 Difference]: Start difference. First operand has 271 places, 208 transitions, 1257 flow. Second operand 65 states and 6663 transitions. [2022-11-21 16:33:44,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 635 transitions, 5705 flow [2022-11-21 16:33:44,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 635 transitions, 5065 flow, removed 319 selfloop flow, removed 15 redundant places. [2022-11-21 16:33:44,957 INFO L231 Difference]: Finished difference. Result has 358 places, 208 transitions, 1205 flow [2022-11-21 16:33:44,958 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=995, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=1205, PETRI_PLACES=358, PETRI_TRANSITIONS=208} [2022-11-21 16:33:44,958 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 207 predicate places. [2022-11-21 16:33:44,958 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 208 transitions, 1205 flow [2022-11-21 16:33:44,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:44,959 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:44,959 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] [2022-11-21 16:33:44,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-21 16:33:44,960 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:44,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:44,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1696038817, now seen corresponding path program 4 times [2022-11-21 16:33:44,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:44,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341753456] [2022-11-21 16:33:44,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:44,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:45,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:45,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:45,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341753456] [2022-11-21 16:33:45,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341753456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:45,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:45,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-21 16:33:45,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605456230] [2022-11-21 16:33:45,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:45,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 16:33:45,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:45,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 16:33:45,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-21 16:33:45,936 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-21 16:33:45,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 208 transitions, 1205 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:45,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:45,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-21 16:33:45,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:49,996 INFO L130 PetriNetUnfolder]: 737/2692 cut-off events. [2022-11-21 16:33:49,997 INFO L131 PetriNetUnfolder]: For 9876/9895 co-relation queries the response was YES. [2022-11-21 16:33:50,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8958 conditions, 2692 events. 737/2692 cut-off events. For 9876/9895 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 19631 event pairs, 80 based on Foata normal form. 5/2577 useless extension candidates. Maximal degree in co-relation 8841. Up to 268 conditions per place. [2022-11-21 16:33:50,020 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 203 selfloop transitions, 80 changer transitions 43/418 dead transitions. [2022-11-21 16:33:50,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 418 transitions, 3522 flow [2022-11-21 16:33:50,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:33:50,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:33:50,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3641 transitions. [2022-11-21 16:33:50,024 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6266781411359724 [2022-11-21 16:33:50,025 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3641 transitions. [2022-11-21 16:33:50,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3641 transitions. [2022-11-21 16:33:50,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:50,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3641 transitions. [2022-11-21 16:33:50,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 104.02857142857142) internal successors, (3641), 35 states have internal predecessors, (3641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:50,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:50,037 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:50,038 INFO L175 Difference]: Start difference. First operand has 358 places, 208 transitions, 1205 flow. Second operand 35 states and 3641 transitions. [2022-11-21 16:33:50,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 418 transitions, 3522 flow [2022-11-21 16:33:50,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 418 transitions, 3117 flow, removed 73 selfloop flow, removed 60 redundant places. [2022-11-21 16:33:50,102 INFO L231 Difference]: Finished difference. Result has 304 places, 241 transitions, 1688 flow [2022-11-21 16:33:50,102 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1042, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1688, PETRI_PLACES=304, PETRI_TRANSITIONS=241} [2022-11-21 16:33:50,104 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 153 predicate places. [2022-11-21 16:33:50,105 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 241 transitions, 1688 flow [2022-11-21 16:33:50,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:50,106 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:50,106 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] [2022-11-21 16:33:50,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-21 16:33:50,107 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:50,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:50,107 INFO L85 PathProgramCache]: Analyzing trace with hash 643487425, now seen corresponding path program 5 times [2022-11-21 16:33:50,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:50,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071315561] [2022-11-21 16:33:50,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:50,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:51,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:51,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:51,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071315561] [2022-11-21 16:33:51,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071315561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:51,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:51,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-21 16:33:51,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981299904] [2022-11-21 16:33:51,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:51,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 16:33:51,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:51,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 16:33:51,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-11-21 16:33:51,035 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-21 16:33:51,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 241 transitions, 1688 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:51,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:51,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-21 16:33:51,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:55,165 INFO L130 PetriNetUnfolder]: 852/2917 cut-off events. [2022-11-21 16:33:55,165 INFO L131 PetriNetUnfolder]: For 13180/13199 co-relation queries the response was YES. [2022-11-21 16:33:55,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10747 conditions, 2917 events. 852/2917 cut-off events. For 13180/13199 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 21495 event pairs, 107 based on Foata normal form. 10/2803 useless extension candidates. Maximal degree in co-relation 10655. Up to 564 conditions per place. [2022-11-21 16:33:55,189 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 312 selfloop transitions, 45 changer transitions 36/485 dead transitions. [2022-11-21 16:33:55,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 485 transitions, 4780 flow [2022-11-21 16:33:55,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:33:55,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:33:55,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3654 transitions. [2022-11-21 16:33:55,193 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6289156626506024 [2022-11-21 16:33:55,193 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3654 transitions. [2022-11-21 16:33:55,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3654 transitions. [2022-11-21 16:33:55,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:55,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3654 transitions. [2022-11-21 16:33:55,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 104.4) internal successors, (3654), 35 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:55,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:55,204 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:55,204 INFO L175 Difference]: Start difference. First operand has 304 places, 241 transitions, 1688 flow. Second operand 35 states and 3654 transitions. [2022-11-21 16:33:55,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 485 transitions, 4780 flow [2022-11-21 16:33:55,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 485 transitions, 4149 flow, removed 151 selfloop flow, removed 20 redundant places. [2022-11-21 16:33:55,302 INFO L231 Difference]: Finished difference. Result has 330 places, 268 transitions, 1910 flow [2022-11-21 16:33:55,303 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1356, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1910, PETRI_PLACES=330, PETRI_TRANSITIONS=268} [2022-11-21 16:33:55,303 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 179 predicate places. [2022-11-21 16:33:55,303 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 268 transitions, 1910 flow [2022-11-21 16:33:55,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:55,304 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:55,304 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] [2022-11-21 16:33:55,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-21 16:33:55,305 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:33:55,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:55,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1884614171, now seen corresponding path program 6 times [2022-11-21 16:33:55,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:55,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969536453] [2022-11-21 16:33:55,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:55,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:56,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:56,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:56,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969536453] [2022-11-21 16:33:56,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969536453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:56,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:56,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-21 16:33:56,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081423474] [2022-11-21 16:33:56,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:56,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 16:33:56,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:56,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 16:33:56,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-11-21 16:33:56,251 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-21 16:33:56,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 268 transitions, 1910 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:56,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:56,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-21 16:33:56,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:34:00,593 INFO L130 PetriNetUnfolder]: 938/3315 cut-off events. [2022-11-21 16:34:00,593 INFO L131 PetriNetUnfolder]: For 17819/17841 co-relation queries the response was YES. [2022-11-21 16:34:00,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12353 conditions, 3315 events. 938/3315 cut-off events. For 17819/17841 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 25607 event pairs, 114 based on Foata normal form. 6/3172 useless extension candidates. Maximal degree in co-relation 12247. Up to 435 conditions per place. [2022-11-21 16:34:00,622 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 322 selfloop transitions, 57 changer transitions 39/510 dead transitions. [2022-11-21 16:34:00,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 510 transitions, 5193 flow [2022-11-21 16:34:00,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:34:00,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:34:00,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3657 transitions. [2022-11-21 16:34:00,628 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6294320137693632 [2022-11-21 16:34:00,628 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3657 transitions. [2022-11-21 16:34:00,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3657 transitions. [2022-11-21 16:34:00,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:34:00,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3657 transitions. [2022-11-21 16:34:00,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 104.48571428571428) internal successors, (3657), 35 states have internal predecessors, (3657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:00,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:00,641 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:00,642 INFO L175 Difference]: Start difference. First operand has 330 places, 268 transitions, 1910 flow. Second operand 35 states and 3657 transitions. [2022-11-21 16:34:00,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 510 transitions, 5193 flow [2022-11-21 16:34:00,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 510 transitions, 4766 flow, removed 152 selfloop flow, removed 19 redundant places. [2022-11-21 16:34:00,772 INFO L231 Difference]: Finished difference. Result has 355 places, 292 transitions, 2246 flow [2022-11-21 16:34:00,773 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1686, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2246, PETRI_PLACES=355, PETRI_TRANSITIONS=292} [2022-11-21 16:34:00,773 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 204 predicate places. [2022-11-21 16:34:00,773 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 292 transitions, 2246 flow [2022-11-21 16:34:00,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:00,774 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:34:00,774 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] [2022-11-21 16:34:00,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-21 16:34:00,774 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:34:00,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:34:00,775 INFO L85 PathProgramCache]: Analyzing trace with hash -980646707, now seen corresponding path program 7 times [2022-11-21 16:34:00,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:34:00,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400182496] [2022-11-21 16:34:00,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:34:00,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:34:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:34:01,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:34:01,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:34:01,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400182496] [2022-11-21 16:34:01,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400182496] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:34:01,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:34:01,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-21 16:34:01,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752187946] [2022-11-21 16:34:01,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:34:01,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 16:34:01,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:34:01,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 16:34:01,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-21 16:34:01,836 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-21 16:34:01,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 292 transitions, 2246 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:01,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:34:01,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-21 16:34:01,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:34:06,961 INFO L130 PetriNetUnfolder]: 1091/3749 cut-off events. [2022-11-21 16:34:06,961 INFO L131 PetriNetUnfolder]: For 27270/27291 co-relation queries the response was YES. [2022-11-21 16:34:06,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15685 conditions, 3749 events. 1091/3749 cut-off events. For 27270/27291 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 29776 event pairs, 216 based on Foata normal form. 7/3590 useless extension candidates. Maximal degree in co-relation 15568. Up to 948 conditions per place. [2022-11-21 16:34:06,998 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 377 selfloop transitions, 44 changer transitions 36/549 dead transitions. [2022-11-21 16:34:06,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 549 transitions, 5944 flow [2022-11-21 16:34:06,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:34:06,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:34:07,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3670 transitions. [2022-11-21 16:34:07,004 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6316695352839932 [2022-11-21 16:34:07,004 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3670 transitions. [2022-11-21 16:34:07,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3670 transitions. [2022-11-21 16:34:07,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:34:07,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3670 transitions. [2022-11-21 16:34:07,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 104.85714285714286) internal successors, (3670), 35 states have internal predecessors, (3670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:07,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:07,018 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:07,018 INFO L175 Difference]: Start difference. First operand has 355 places, 292 transitions, 2246 flow. Second operand 35 states and 3670 transitions. [2022-11-21 16:34:07,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 549 transitions, 5944 flow [2022-11-21 16:34:07,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 549 transitions, 5374 flow, removed 174 selfloop flow, removed 19 redundant places. [2022-11-21 16:34:07,234 INFO L231 Difference]: Finished difference. Result has 384 places, 319 transitions, 2592 flow [2022-11-21 16:34:07,235 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1945, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2592, PETRI_PLACES=384, PETRI_TRANSITIONS=319} [2022-11-21 16:34:07,235 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 233 predicate places. [2022-11-21 16:34:07,235 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 319 transitions, 2592 flow [2022-11-21 16:34:07,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:07,236 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:34:07,236 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:34:07,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-21 16:34:07,237 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:34:07,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:34:07,237 INFO L85 PathProgramCache]: Analyzing trace with hash 974376259, now seen corresponding path program 8 times [2022-11-21 16:34:07,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:34:07,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695721311] [2022-11-21 16:34:07,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:34:07,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:34:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:34:08,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:34:08,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:34:08,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695721311] [2022-11-21 16:34:08,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695721311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:34:08,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:34:08,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-21 16:34:08,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958073973] [2022-11-21 16:34:08,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:34:08,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 16:34:08,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:34:08,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 16:34:08,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-11-21 16:34:08,395 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-21 16:34:08,398 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 319 transitions, 2592 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:08,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:34:08,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-21 16:34:08,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:34:13,355 INFO L130 PetriNetUnfolder]: 1163/3954 cut-off events. [2022-11-21 16:34:13,355 INFO L131 PetriNetUnfolder]: For 37770/37793 co-relation queries the response was YES. [2022-11-21 16:34:13,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17744 conditions, 3954 events. 1163/3954 cut-off events. For 37770/37793 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 32055 event pairs, 184 based on Foata normal form. 7/3780 useless extension candidates. Maximal degree in co-relation 17611. Up to 995 conditions per place. [2022-11-21 16:34:13,391 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 423 selfloop transitions, 58 changer transitions 39/612 dead transitions. [2022-11-21 16:34:13,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 612 transitions, 7290 flow [2022-11-21 16:34:13,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:34:13,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:34:13,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3687 transitions. [2022-11-21 16:34:13,395 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6345955249569707 [2022-11-21 16:34:13,395 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3687 transitions. [2022-11-21 16:34:13,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3687 transitions. [2022-11-21 16:34:13,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:34:13,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3687 transitions. [2022-11-21 16:34:13,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 105.34285714285714) internal successors, (3687), 35 states have internal predecessors, (3687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:13,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:13,402 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:13,402 INFO L175 Difference]: Start difference. First operand has 384 places, 319 transitions, 2592 flow. Second operand 35 states and 3687 transitions. [2022-11-21 16:34:13,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 612 transitions, 7290 flow [2022-11-21 16:34:13,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 612 transitions, 6679 flow, removed 273 selfloop flow, removed 19 redundant places. [2022-11-21 16:34:13,582 INFO L231 Difference]: Finished difference. Result has 408 places, 341 transitions, 2979 flow [2022-11-21 16:34:13,582 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=2290, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2979, PETRI_PLACES=408, PETRI_TRANSITIONS=341} [2022-11-21 16:34:13,583 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 257 predicate places. [2022-11-21 16:34:13,583 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 341 transitions, 2979 flow [2022-11-21 16:34:13,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:13,583 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:34:13,583 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] [2022-11-21 16:34:13,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-11-21 16:34:13,584 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:34:13,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:34:13,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1736285473, now seen corresponding path program 9 times [2022-11-21 16:34:13,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:34:13,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196984763] [2022-11-21 16:34:13,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:34:13,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:34:13,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:34:14,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:34:14,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:34:14,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196984763] [2022-11-21 16:34:14,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196984763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:34:14,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:34:14,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-21 16:34:14,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143006151] [2022-11-21 16:34:14,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:34:14,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 16:34:14,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:34:14,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 16:34:14,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-21 16:34:14,541 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-21 16:34:14,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 341 transitions, 2979 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:14,543 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:34:14,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-21 16:34:14,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:34:22,716 INFO L130 PetriNetUnfolder]: 1373/4610 cut-off events. [2022-11-21 16:34:22,716 INFO L131 PetriNetUnfolder]: For 52804/52827 co-relation queries the response was YES. [2022-11-21 16:34:22,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22022 conditions, 4610 events. 1373/4610 cut-off events. For 52804/52827 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 39006 event pairs, 345 based on Foata normal form. 7/4421 useless extension candidates. Maximal degree in co-relation 21880. Up to 1377 conditions per place. [2022-11-21 16:34:22,760 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 467 selfloop transitions, 26 changer transitions 112/697 dead transitions. [2022-11-21 16:34:22,761 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 697 transitions, 8481 flow [2022-11-21 16:34:22,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-21 16:34:22,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2022-11-21 16:34:22,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 6402 transitions. [2022-11-21 16:34:22,767 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.622036533229693 [2022-11-21 16:34:22,767 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 6402 transitions. [2022-11-21 16:34:22,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 6402 transitions. [2022-11-21 16:34:22,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:34:22,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 6402 transitions. [2022-11-21 16:34:22,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 103.25806451612904) internal successors, (6402), 62 states have internal predecessors, (6402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:22,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 166.0) internal successors, (10458), 63 states have internal predecessors, (10458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:22,787 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 166.0) internal successors, (10458), 63 states have internal predecessors, (10458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:22,787 INFO L175 Difference]: Start difference. First operand has 408 places, 341 transitions, 2979 flow. Second operand 62 states and 6402 transitions. [2022-11-21 16:34:22,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 697 transitions, 8481 flow [2022-11-21 16:34:23,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 697 transitions, 7765 flow, removed 237 selfloop flow, removed 20 redundant places. [2022-11-21 16:34:23,179 INFO L231 Difference]: Finished difference. Result has 492 places, 351 transitions, 3033 flow [2022-11-21 16:34:23,180 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=2590, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=3033, PETRI_PLACES=492, PETRI_TRANSITIONS=351} [2022-11-21 16:34:23,180 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 341 predicate places. [2022-11-21 16:34:23,180 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 351 transitions, 3033 flow [2022-11-21 16:34:23,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:23,180 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:34:23,180 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] [2022-11-21 16:34:23,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-21 16:34:23,181 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:34:23,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:34:23,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1971752081, now seen corresponding path program 10 times [2022-11-21 16:34:23,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:34:23,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413028016] [2022-11-21 16:34:23,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:34:23,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:34:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:34:24,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:34:24,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:34:24,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413028016] [2022-11-21 16:34:24,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413028016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:34:24,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:34:24,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-21 16:34:24,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045938975] [2022-11-21 16:34:24,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:34:24,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 16:34:24,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:34:24,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 16:34:24,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-21 16:34:24,095 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-21 16:34:24,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 351 transitions, 3033 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:24,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:34:24,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-21 16:34:24,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:34:30,251 INFO L130 PetriNetUnfolder]: 1447/4925 cut-off events. [2022-11-21 16:34:30,251 INFO L131 PetriNetUnfolder]: For 103555/103585 co-relation queries the response was YES. [2022-11-21 16:34:30,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27622 conditions, 4925 events. 1447/4925 cut-off events. For 103555/103585 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 42723 event pairs, 234 based on Foata normal form. 11/4708 useless extension candidates. Maximal degree in co-relation 27435. Up to 995 conditions per place. [2022-11-21 16:34:30,303 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 477 selfloop transitions, 54 changer transitions 43/666 dead transitions. [2022-11-21 16:34:30,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 666 transitions, 9658 flow [2022-11-21 16:34:30,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:34:30,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:34:30,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3689 transitions. [2022-11-21 16:34:30,307 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6349397590361445 [2022-11-21 16:34:30,307 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3689 transitions. [2022-11-21 16:34:30,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3689 transitions. [2022-11-21 16:34:30,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:34:30,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3689 transitions. [2022-11-21 16:34:30,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 105.4) internal successors, (3689), 35 states have internal predecessors, (3689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:30,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:30,313 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:30,313 INFO L175 Difference]: Start difference. First operand has 492 places, 351 transitions, 3033 flow. Second operand 35 states and 3689 transitions. [2022-11-21 16:34:30,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 666 transitions, 9658 flow [2022-11-21 16:34:30,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 666 transitions, 8895 flow, removed 362 selfloop flow, removed 28 redundant places. [2022-11-21 16:34:30,768 INFO L231 Difference]: Finished difference. Result has 476 places, 375 transitions, 3777 flow [2022-11-21 16:34:30,769 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=2884, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3777, PETRI_PLACES=476, PETRI_TRANSITIONS=375} [2022-11-21 16:34:30,769 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 325 predicate places. [2022-11-21 16:34:30,769 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 375 transitions, 3777 flow [2022-11-21 16:34:30,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:30,770 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:34:30,770 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] [2022-11-21 16:34:30,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-21 16:34:30,771 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:34:30,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:34:30,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1596263431, now seen corresponding path program 11 times [2022-11-21 16:34:30,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:34:30,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275703635] [2022-11-21 16:34:30,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:34:30,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:34:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:34:31,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:34:31,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:34:31,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275703635] [2022-11-21 16:34:31,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275703635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:34:31,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:34:31,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-21 16:34:31,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78035283] [2022-11-21 16:34:31,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:34:31,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 16:34:31,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:34:31,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 16:34:31,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2022-11-21 16:34:31,849 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-21 16:34:31,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 375 transitions, 3777 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:31,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:34:31,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-21 16:34:31,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:34:39,325 INFO L130 PetriNetUnfolder]: 1562/5437 cut-off events. [2022-11-21 16:34:39,325 INFO L131 PetriNetUnfolder]: For 111557/111587 co-relation queries the response was YES. [2022-11-21 16:34:39,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29688 conditions, 5437 events. 1562/5437 cut-off events. For 111557/111587 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 48297 event pairs, 290 based on Foata normal form. 8/5194 useless extension candidates. Maximal degree in co-relation 29500. Up to 1411 conditions per place. [2022-11-21 16:34:39,398 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 485 selfloop transitions, 77 changer transitions 68/722 dead transitions. [2022-11-21 16:34:39,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 722 transitions, 10111 flow [2022-11-21 16:34:39,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-21 16:34:39,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-11-21 16:34:39,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 4848 transitions. [2022-11-21 16:34:39,405 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6213791335554986 [2022-11-21 16:34:39,405 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 4848 transitions. [2022-11-21 16:34:39,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 4848 transitions. [2022-11-21 16:34:39,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:34:39,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 4848 transitions. [2022-11-21 16:34:39,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 103.14893617021276) internal successors, (4848), 47 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:39,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 166.0) internal successors, (7968), 48 states have internal predecessors, (7968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:39,423 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 166.0) internal successors, (7968), 48 states have internal predecessors, (7968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:39,424 INFO L175 Difference]: Start difference. First operand has 476 places, 375 transitions, 3777 flow. Second operand 47 states and 4848 transitions. [2022-11-21 16:34:39,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 722 transitions, 10111 flow [2022-11-21 16:34:40,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 722 transitions, 9474 flow, removed 288 selfloop flow, removed 20 redundant places. [2022-11-21 16:34:40,063 INFO L231 Difference]: Finished difference. Result has 527 places, 398 transitions, 3937 flow [2022-11-21 16:34:40,064 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=3254, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=3937, PETRI_PLACES=527, PETRI_TRANSITIONS=398} [2022-11-21 16:34:40,064 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 376 predicate places. [2022-11-21 16:34:40,065 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 398 transitions, 3937 flow [2022-11-21 16:34:40,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:40,065 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:34:40,066 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] [2022-11-21 16:34:40,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-21 16:34:40,066 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:34:40,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:34:40,067 INFO L85 PathProgramCache]: Analyzing trace with hash -2122653639, now seen corresponding path program 12 times [2022-11-21 16:34:40,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:34:40,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629822898] [2022-11-21 16:34:40,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:34:40,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:34:40,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:34:41,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:34:41,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:34:41,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629822898] [2022-11-21 16:34:41,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629822898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:34:41,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:34:41,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-21 16:34:41,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129320417] [2022-11-21 16:34:41,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:34:41,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 16:34:41,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:34:41,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 16:34:41,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-21 16:34:41,049 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-21 16:34:41,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 398 transitions, 3937 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:41,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:34:41,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-21 16:34:41,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:34:47,258 INFO L130 PetriNetUnfolder]: 1573/5235 cut-off events. [2022-11-21 16:34:47,258 INFO L131 PetriNetUnfolder]: For 131317/131347 co-relation queries the response was YES. [2022-11-21 16:34:47,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31602 conditions, 5235 events. 1573/5235 cut-off events. For 131317/131347 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 45565 event pairs, 383 based on Foata normal form. 11/5023 useless extension candidates. Maximal degree in co-relation 31388. Up to 1776 conditions per place. [2022-11-21 16:34:47,332 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 480 selfloop transitions, 49 changer transitions 36/657 dead transitions. [2022-11-21 16:34:47,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 657 transitions, 8932 flow [2022-11-21 16:34:47,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:34:47,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:34:47,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3686 transitions. [2022-11-21 16:34:47,336 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6344234079173838 [2022-11-21 16:34:47,336 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3686 transitions. [2022-11-21 16:34:47,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3686 transitions. [2022-11-21 16:34:47,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:34:47,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3686 transitions. [2022-11-21 16:34:47,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 105.31428571428572) internal successors, (3686), 35 states have internal predecessors, (3686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:47,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:47,344 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:47,344 INFO L175 Difference]: Start difference. First operand has 527 places, 398 transitions, 3937 flow. Second operand 35 states and 3686 transitions. [2022-11-21 16:34:47,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 657 transitions, 8932 flow [2022-11-21 16:34:48,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 657 transitions, 8411 flow, removed 182 selfloop flow, removed 25 redundant places. [2022-11-21 16:34:48,280 INFO L231 Difference]: Finished difference. Result has 530 places, 418 transitions, 4281 flow [2022-11-21 16:34:48,280 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=3641, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4281, PETRI_PLACES=530, PETRI_TRANSITIONS=418} [2022-11-21 16:34:48,281 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 379 predicate places. [2022-11-21 16:34:48,281 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 418 transitions, 4281 flow [2022-11-21 16:34:48,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:48,281 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:34:48,281 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] [2022-11-21 16:34:48,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-21 16:34:48,282 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:34:48,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:34:48,282 INFO L85 PathProgramCache]: Analyzing trace with hash 326623145, now seen corresponding path program 13 times [2022-11-21 16:34:48,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:34:48,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752270121] [2022-11-21 16:34:48,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:34:48,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:34:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:34:49,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:34:49,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:34:49,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752270121] [2022-11-21 16:34:49,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752270121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:34:49,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:34:49,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-21 16:34:49,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080238286] [2022-11-21 16:34:49,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:34:49,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 16:34:49,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:34:49,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 16:34:49,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-21 16:34:49,372 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-21 16:34:49,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 418 transitions, 4281 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:49,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:34:49,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-21 16:34:49,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:34:55,869 INFO L130 PetriNetUnfolder]: 1722/5897 cut-off events. [2022-11-21 16:34:55,870 INFO L131 PetriNetUnfolder]: For 128478/128508 co-relation queries the response was YES. [2022-11-21 16:34:55,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33451 conditions, 5897 events. 1722/5897 cut-off events. For 128478/128508 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 53099 event pairs, 405 based on Foata normal form. 8/5639 useless extension candidates. Maximal degree in co-relation 33234. Up to 1787 conditions per place. [2022-11-21 16:34:55,957 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 522 selfloop transitions, 54 changer transitions 43/711 dead transitions. [2022-11-21 16:34:55,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 711 transitions, 10508 flow [2022-11-21 16:34:55,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:34:55,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:34:55,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3677 transitions. [2022-11-21 16:34:55,962 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6328743545611015 [2022-11-21 16:34:55,963 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3677 transitions. [2022-11-21 16:34:55,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3677 transitions. [2022-11-21 16:34:55,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:34:55,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3677 transitions. [2022-11-21 16:34:55,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 105.05714285714286) internal successors, (3677), 35 states have internal predecessors, (3677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:55,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:55,973 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:55,973 INFO L175 Difference]: Start difference. First operand has 530 places, 418 transitions, 4281 flow. Second operand 35 states and 3677 transitions. [2022-11-21 16:34:55,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 711 transitions, 10508 flow [2022-11-21 16:34:57,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 711 transitions, 10030 flow, removed 176 selfloop flow, removed 20 redundant places. [2022-11-21 16:34:57,096 INFO L231 Difference]: Finished difference. Result has 558 places, 446 transitions, 4774 flow [2022-11-21 16:34:57,097 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=3906, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4774, PETRI_PLACES=558, PETRI_TRANSITIONS=446} [2022-11-21 16:34:57,097 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 407 predicate places. [2022-11-21 16:34:57,098 INFO L495 AbstractCegarLoop]: Abstraction has has 558 places, 446 transitions, 4774 flow [2022-11-21 16:34:57,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:57,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:34:57,099 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] [2022-11-21 16:34:57,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-11-21 16:34:57,099 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:34:57,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:34:57,100 INFO L85 PathProgramCache]: Analyzing trace with hash -214107227, now seen corresponding path program 14 times [2022-11-21 16:34:57,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:34:57,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809087164] [2022-11-21 16:34:57,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:34:57,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:34:57,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:34:58,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:34:58,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:34:58,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809087164] [2022-11-21 16:34:58,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809087164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:34:58,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:34:58,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-21 16:34:58,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616010793] [2022-11-21 16:34:58,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:34:58,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 16:34:58,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:34:58,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 16:34:58,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-11-21 16:34:58,041 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-21 16:34:58,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 446 transitions, 4774 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:58,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:34:58,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-21 16:34:58,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:35:04,560 INFO L130 PetriNetUnfolder]: 1787/5972 cut-off events. [2022-11-21 16:35:04,560 INFO L131 PetriNetUnfolder]: For 147301/147332 co-relation queries the response was YES. [2022-11-21 16:35:04,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35965 conditions, 5972 events. 1787/5972 cut-off events. For 147301/147332 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 53687 event pairs, 437 based on Foata normal form. 9/5724 useless extension candidates. Maximal degree in co-relation 35732. Up to 2052 conditions per place. [2022-11-21 16:35:04,662 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 551 selfloop transitions, 53 changer transitions 36/732 dead transitions. [2022-11-21 16:35:04,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 732 transitions, 10741 flow [2022-11-21 16:35:04,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:35:04,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:35:04,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3698 transitions. [2022-11-21 16:35:04,668 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6364888123924268 [2022-11-21 16:35:04,668 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3698 transitions. [2022-11-21 16:35:04,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3698 transitions. [2022-11-21 16:35:04,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:35:04,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3698 transitions. [2022-11-21 16:35:04,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 105.65714285714286) internal successors, (3698), 35 states have internal predecessors, (3698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:04,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:04,678 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:04,678 INFO L175 Difference]: Start difference. First operand has 558 places, 446 transitions, 4774 flow. Second operand 35 states and 3698 transitions. [2022-11-21 16:35:04,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 732 transitions, 10741 flow [2022-11-21 16:35:05,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 732 transitions, 10039 flow, removed 296 selfloop flow, removed 20 redundant places. [2022-11-21 16:35:05,893 INFO L231 Difference]: Finished difference. Result has 581 places, 468 transitions, 4994 flow [2022-11-21 16:35:05,894 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=4248, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4994, PETRI_PLACES=581, PETRI_TRANSITIONS=468} [2022-11-21 16:35:05,894 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 430 predicate places. [2022-11-21 16:35:05,895 INFO L495 AbstractCegarLoop]: Abstraction has has 581 places, 468 transitions, 4994 flow [2022-11-21 16:35:05,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:05,895 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:35:05,896 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] [2022-11-21 16:35:05,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-11-21 16:35:05,896 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:35:05,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:05,896 INFO L85 PathProgramCache]: Analyzing trace with hash -617758707, now seen corresponding path program 15 times [2022-11-21 16:35:05,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:35:05,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96903000] [2022-11-21 16:35:05,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:05,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:35:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:06,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:35:06,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:35:06,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96903000] [2022-11-21 16:35:06,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96903000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:06,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:06,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-21 16:35:06,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816803093] [2022-11-21 16:35:06,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:06,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 16:35:06,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:35:06,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 16:35:06,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-11-21 16:35:06,800 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-21 16:35:06,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 468 transitions, 4994 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:06,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:35:06,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-21 16:35:06,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:35:13,913 INFO L130 PetriNetUnfolder]: 1910/6349 cut-off events. [2022-11-21 16:35:13,913 INFO L131 PetriNetUnfolder]: For 176362/176393 co-relation queries the response was YES. [2022-11-21 16:35:14,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40235 conditions, 6349 events. 1910/6349 cut-off events. For 176362/176393 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 57809 event pairs, 560 based on Foata normal form. 9/6080 useless extension candidates. Maximal degree in co-relation 39993. Up to 1558 conditions per place. [2022-11-21 16:35:14,030 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 589 selfloop transitions, 56 changer transitions 43/780 dead transitions. [2022-11-21 16:35:14,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 780 transitions, 12169 flow [2022-11-21 16:35:14,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:35:14,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:35:14,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3703 transitions. [2022-11-21 16:35:14,037 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6373493975903615 [2022-11-21 16:35:14,037 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3703 transitions. [2022-11-21 16:35:14,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3703 transitions. [2022-11-21 16:35:14,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:35:14,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3703 transitions. [2022-11-21 16:35:14,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 105.8) internal successors, (3703), 35 states have internal predecessors, (3703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:14,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:14,052 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:14,052 INFO L175 Difference]: Start difference. First operand has 581 places, 468 transitions, 4994 flow. Second operand 35 states and 3703 transitions. [2022-11-21 16:35:14,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 780 transitions, 12169 flow [2022-11-21 16:35:15,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 780 transitions, 11642 flow, removed 208 selfloop flow, removed 20 redundant places. [2022-11-21 16:35:15,407 INFO L231 Difference]: Finished difference. Result has 608 places, 493 transitions, 5673 flow [2022-11-21 16:35:15,407 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=4605, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5673, PETRI_PLACES=608, PETRI_TRANSITIONS=493} [2022-11-21 16:35:15,408 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 457 predicate places. [2022-11-21 16:35:15,408 INFO L495 AbstractCegarLoop]: Abstraction has has 608 places, 493 transitions, 5673 flow [2022-11-21 16:35:15,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:15,409 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:35:15,409 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] [2022-11-21 16:35:15,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-11-21 16:35:15,409 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:35:15,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:15,410 INFO L85 PathProgramCache]: Analyzing trace with hash 307557093, now seen corresponding path program 16 times [2022-11-21 16:35:15,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:35:15,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929355631] [2022-11-21 16:35:15,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:15,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:35:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:16,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:35:16,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:35:16,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929355631] [2022-11-21 16:35:16,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929355631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:16,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:16,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-21 16:35:16,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899569410] [2022-11-21 16:35:16,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:16,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 16:35:16,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:35:16,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 16:35:16,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-21 16:35:16,252 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-21 16:35:16,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 493 transitions, 5673 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:16,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:35:16,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-21 16:35:16,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:35:23,441 INFO L130 PetriNetUnfolder]: 2011/6591 cut-off events. [2022-11-21 16:35:23,441 INFO L131 PetriNetUnfolder]: For 208111/208149 co-relation queries the response was YES. [2022-11-21 16:35:23,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43666 conditions, 6591 events. 2011/6591 cut-off events. For 208111/208149 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 60610 event pairs, 590 based on Foata normal form. 11/6322 useless extension candidates. Maximal degree in co-relation 43409. Up to 2326 conditions per place. [2022-11-21 16:35:23,557 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 602 selfloop transitions, 56 changer transitions 36/786 dead transitions. [2022-11-21 16:35:23,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 786 transitions, 12447 flow [2022-11-21 16:35:23,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:35:23,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:35:23,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3700 transitions. [2022-11-21 16:35:23,560 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6368330464716007 [2022-11-21 16:35:23,560 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3700 transitions. [2022-11-21 16:35:23,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3700 transitions. [2022-11-21 16:35:23,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:35:23,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3700 transitions. [2022-11-21 16:35:23,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 105.71428571428571) internal successors, (3700), 35 states have internal predecessors, (3700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:23,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:23,566 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:23,566 INFO L175 Difference]: Start difference. First operand has 608 places, 493 transitions, 5673 flow. Second operand 35 states and 3700 transitions. [2022-11-21 16:35:23,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 786 transitions, 12447 flow [2022-11-21 16:35:25,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 786 transitions, 11562 flow, removed 398 selfloop flow, removed 20 redundant places. [2022-11-21 16:35:25,248 INFO L231 Difference]: Finished difference. Result has 633 places, 517 transitions, 5866 flow [2022-11-21 16:35:25,249 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=5007, PETRI_DIFFERENCE_MINUEND_PLACES=573, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5866, PETRI_PLACES=633, PETRI_TRANSITIONS=517} [2022-11-21 16:35:25,250 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 482 predicate places. [2022-11-21 16:35:25,250 INFO L495 AbstractCegarLoop]: Abstraction has has 633 places, 517 transitions, 5866 flow [2022-11-21 16:35:25,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:25,250 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:35:25,251 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] [2022-11-21 16:35:25,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-11-21 16:35:25,251 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:35:25,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:25,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1896115577, now seen corresponding path program 17 times [2022-11-21 16:35:25,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:35:25,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337158823] [2022-11-21 16:35:25,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:25,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:35:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:26,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:35:26,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:35:26,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337158823] [2022-11-21 16:35:26,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337158823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:26,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:26,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-21 16:35:26,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372161994] [2022-11-21 16:35:26,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:26,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 16:35:26,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:35:26,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 16:35:26,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2022-11-21 16:35:26,210 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-21 16:35:26,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 517 transitions, 5866 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:26,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:35:26,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-21 16:35:26,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:35:34,082 INFO L130 PetriNetUnfolder]: 2208/7358 cut-off events. [2022-11-21 16:35:34,083 INFO L131 PetriNetUnfolder]: For 230808/230842 co-relation queries the response was YES. [2022-11-21 16:35:34,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48242 conditions, 7358 events. 2208/7358 cut-off events. For 230808/230842 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 69808 event pairs, 645 based on Foata normal form. 8/7040 useless extension candidates. Maximal degree in co-relation 47974. Up to 2850 conditions per place. [2022-11-21 16:35:34,223 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 624 selfloop transitions, 54 changer transitions 43/813 dead transitions. [2022-11-21 16:35:34,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 652 places, 813 transitions, 12878 flow [2022-11-21 16:35:34,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:35:34,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:35:34,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3693 transitions. [2022-11-21 16:35:34,227 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6356282271944923 [2022-11-21 16:35:34,227 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3693 transitions. [2022-11-21 16:35:34,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3693 transitions. [2022-11-21 16:35:34,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:35:34,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3693 transitions. [2022-11-21 16:35:34,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 105.51428571428572) internal successors, (3693), 35 states have internal predecessors, (3693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:34,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:34,234 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:34,234 INFO L175 Difference]: Start difference. First operand has 633 places, 517 transitions, 5866 flow. Second operand 35 states and 3693 transitions. [2022-11-21 16:35:34,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 652 places, 813 transitions, 12878 flow [2022-11-21 16:35:36,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 633 places, 813 transitions, 12344 flow, removed 223 selfloop flow, removed 19 redundant places. [2022-11-21 16:35:36,238 INFO L231 Difference]: Finished difference. Result has 663 places, 545 transitions, 6362 flow [2022-11-21 16:35:36,239 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=5432, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=6362, PETRI_PLACES=663, PETRI_TRANSITIONS=545} [2022-11-21 16:35:36,239 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 512 predicate places. [2022-11-21 16:35:36,239 INFO L495 AbstractCegarLoop]: Abstraction has has 663 places, 545 transitions, 6362 flow [2022-11-21 16:35:36,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:36,240 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:35:36,240 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] [2022-11-21 16:35:36,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-11-21 16:35:36,240 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:35:36,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:36,241 INFO L85 PathProgramCache]: Analyzing trace with hash 115844357, now seen corresponding path program 18 times [2022-11-21 16:35:36,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:35:36,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080440005] [2022-11-21 16:35:36,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:36,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:35:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:37,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:35:37,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:35:37,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080440005] [2022-11-21 16:35:37,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080440005] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:37,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:37,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-21 16:35:37,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460288227] [2022-11-21 16:35:37,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:37,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 16:35:37,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:35:37,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 16:35:37,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-21 16:35:37,051 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-21 16:35:37,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 663 places, 545 transitions, 6362 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:37,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:35:37,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-21 16:35:37,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:35:45,718 INFO L130 PetriNetUnfolder]: 2332/7688 cut-off events. [2022-11-21 16:35:45,718 INFO L131 PetriNetUnfolder]: For 266447/266490 co-relation queries the response was YES. [2022-11-21 16:35:45,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52784 conditions, 7688 events. 2332/7688 cut-off events. For 266447/266490 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 73586 event pairs, 731 based on Foata normal form. 11/7367 useless extension candidates. Maximal degree in co-relation 52500. Up to 2680 conditions per place. [2022-11-21 16:35:45,863 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 678 selfloop transitions, 59 changer transitions 36/865 dead transitions. [2022-11-21 16:35:45,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 682 places, 865 transitions, 13859 flow [2022-11-21 16:35:45,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:35:45,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:35:45,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3715 transitions. [2022-11-21 16:35:45,867 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6394148020654045 [2022-11-21 16:35:45,867 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3715 transitions. [2022-11-21 16:35:45,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3715 transitions. [2022-11-21 16:35:45,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:35:45,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3715 transitions. [2022-11-21 16:35:45,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 106.14285714285714) internal successors, (3715), 35 states have internal predecessors, (3715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:45,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:45,873 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:45,873 INFO L175 Difference]: Start difference. First operand has 663 places, 545 transitions, 6362 flow. Second operand 35 states and 3715 transitions. [2022-11-21 16:35:45,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 682 places, 865 transitions, 13859 flow [2022-11-21 16:35:48,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 664 places, 865 transitions, 13088 flow, removed 353 selfloop flow, removed 18 redundant places. [2022-11-21 16:35:48,462 INFO L231 Difference]: Finished difference. Result has 692 places, 570 transitions, 6724 flow [2022-11-21 16:35:48,463 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=5782, PETRI_DIFFERENCE_MINUEND_PLACES=630, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=6724, PETRI_PLACES=692, PETRI_TRANSITIONS=570} [2022-11-21 16:35:48,464 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 541 predicate places. [2022-11-21 16:35:48,464 INFO L495 AbstractCegarLoop]: Abstraction has has 692 places, 570 transitions, 6724 flow [2022-11-21 16:35:48,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:48,464 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:35:48,465 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] [2022-11-21 16:35:48,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-11-21 16:35:48,465 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:35:48,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:48,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1188824047, now seen corresponding path program 19 times [2022-11-21 16:35:48,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:35:48,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943699553] [2022-11-21 16:35:48,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:48,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:35:48,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:49,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:35:49,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:35:49,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943699553] [2022-11-21 16:35:49,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943699553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:49,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:49,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-21 16:35:49,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889795557] [2022-11-21 16:35:49,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:49,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 16:35:49,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:35:49,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 16:35:49,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-21 16:35:49,369 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-21 16:35:49,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 692 places, 570 transitions, 6724 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:49,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:35:49,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-21 16:35:49,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand