./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eec49dc-7a63-4408-bbe6-e78b7f5c94e0/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eec49dc-7a63-4408-bbe6-e78b7f5c94e0/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eec49dc-7a63-4408-bbe6-e78b7f5c94e0/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eec49dc-7a63-4408-bbe6-e78b7f5c94e0/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eec49dc-7a63-4408-bbe6-e78b7f5c94e0/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eec49dc-7a63-4408-bbe6-e78b7f5c94e0/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 23d465ba9caf460ed15aca3aec6b262b1ee2c4f0003cc0e5fbc446c20cfe164a --- 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-6b4ec56 [2022-11-20 10:50:50,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:50:50,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:50:50,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:50:50,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:50:50,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:50:50,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:50:50,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:50:50,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:50:50,715 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:50:50,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:50:50,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:50:50,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:50:50,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:50:50,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:50:50,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:50:50,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:50:50,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:50:50,730 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:50:50,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:50:50,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:50:50,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:50:50,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:50:50,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:50:50,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:50:50,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:50:50,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:50:50,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:50:50,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:50:50,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:50:50,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:50:50,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:50:50,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:50:50,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:50:50,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:50:50,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:50:50,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:50:50,777 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:50:50,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:50:50,780 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:50:50,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:50:50,781 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eec49dc-7a63-4408-bbe6-e78b7f5c94e0/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 10:50:50,832 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:50:50,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:50:50,833 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:50:50,834 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:50:50,835 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:50:50,835 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:50:50,836 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:50:50,836 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:50:50,836 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:50:50,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:50:50,838 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:50:50,838 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:50:50,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:50:50,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:50:50,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:50:50,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:50:50,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:50:50,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:50:50,839 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 10:50:50,840 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:50:50,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:50:50,840 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:50:50,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:50:50,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:50:50,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:50:50,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:50:50,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:50:50,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:50:50,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:50:50,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:50:50,843 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:50:50,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:50:50,844 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:50:50,844 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:50:50,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:50:50,844 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_9eec49dc-7a63-4408-bbe6-e78b7f5c94e0/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eec49dc-7a63-4408-bbe6-e78b7f5c94e0/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23d465ba9caf460ed15aca3aec6b262b1ee2c4f0003cc0e5fbc446c20cfe164a [2022-11-20 10:50:51,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:50:51,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:50:51,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:50:51,159 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:50:51,159 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:50:51,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eec49dc-7a63-4408-bbe6-e78b7f5c94e0/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i [2022-11-20 10:50:54,162 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:50:54,513 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:50:54,514 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eec49dc-7a63-4408-bbe6-e78b7f5c94e0/sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i [2022-11-20 10:50:54,531 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eec49dc-7a63-4408-bbe6-e78b7f5c94e0/bin/uautomizer-ug76WZFUDN/data/2c8f65055/f16d3f10937542b1b92cf0279db1638d/FLAG2190c0488 [2022-11-20 10:50:54,546 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eec49dc-7a63-4408-bbe6-e78b7f5c94e0/bin/uautomizer-ug76WZFUDN/data/2c8f65055/f16d3f10937542b1b92cf0279db1638d [2022-11-20 10:50:54,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:50:54,550 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:50:54,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:50:54,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:50:54,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:50:54,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:50:54" (1/1) ... [2022-11-20 10:50:54,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35c91ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:54, skipping insertion in model container [2022-11-20 10:50:54,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:50:54" (1/1) ... [2022-11-20 10:50:54,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:50:54,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:50:55,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:50:55,473 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:50:55,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:50:55,639 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:50:55,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:55 WrapperNode [2022-11-20 10:50:55,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:50:55,641 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:50:55,641 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:50:55,641 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:50:55,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:55" (1/1) ... [2022-11-20 10:50:55,675 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:55" (1/1) ... [2022-11-20 10:50:55,701 INFO L138 Inliner]: procedures = 365, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 56 [2022-11-20 10:50:55,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:50:55,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:50:55,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:50:55,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:50:55,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:55" (1/1) ... [2022-11-20 10:50:55,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:55" (1/1) ... [2022-11-20 10:50:55,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:55" (1/1) ... [2022-11-20 10:50:55,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:55" (1/1) ... [2022-11-20 10:50:55,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:55" (1/1) ... [2022-11-20 10:50:55,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:55" (1/1) ... [2022-11-20 10:50:55,730 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:55" (1/1) ... [2022-11-20 10:50:55,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:55" (1/1) ... [2022-11-20 10:50:55,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:50:55,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:50:55,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:50:55,735 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:50:55,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:55" (1/1) ... [2022-11-20 10:50:55,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:50:55,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eec49dc-7a63-4408-bbe6-e78b7f5c94e0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:55,767 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eec49dc-7a63-4408-bbe6-e78b7f5c94e0/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:50:55,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9eec49dc-7a63-4408-bbe6-e78b7f5c94e0/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:50:55,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:50:55,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:50:55,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:50:55,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:50:55,875 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 10:50:55,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:50:55,875 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-20 10:50:55,876 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-20 10:50:55,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:50:55,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:50:55,877 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:50:56,015 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:50:56,017 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:50:56,270 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:50:56,278 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:50:56,278 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 10:50:56,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:50:56 BoogieIcfgContainer [2022-11-20 10:50:56,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:50:56,287 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:50:56,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:50:56,291 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:50:56,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:50:54" (1/3) ... [2022-11-20 10:50:56,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@725ac0b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:50:56, skipping insertion in model container [2022-11-20 10:50:56,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:55" (2/3) ... [2022-11-20 10:50:56,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@725ac0b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:50:56, skipping insertion in model container [2022-11-20 10:50:56,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:50:56" (3/3) ... [2022-11-20 10:50:56,297 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_15-list_entry_nr.i [2022-11-20 10:50:56,310 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:50:56,321 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:50:56,321 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-20 10:50:56,321 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:50:56,373 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 10:50:56,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 73 transitions, 151 flow [2022-11-20 10:50:56,458 INFO L130 PetriNetUnfolder]: 0/72 cut-off events. [2022-11-20 10:50:56,459 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:50:56,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 72 events. 0/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2022-11-20 10:50:56,462 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 73 transitions, 151 flow [2022-11-20 10:50:56,466 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 72 transitions, 147 flow [2022-11-20 10:50:56,478 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:50:56,485 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;@76a8b977, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:50:56,485 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-20 10:50:56,498 INFO L130 PetriNetUnfolder]: 0/45 cut-off events. [2022-11-20 10:50:56,499 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:50:56,499 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:50:56,500 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] [2022-11-20 10:50:56,500 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:50:56,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:56,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1780094849, now seen corresponding path program 1 times [2022-11-20 10:50:56,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:56,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214126666] [2022-11-20 10:50:56,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:56,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:56,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:58,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:58,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:58,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214126666] [2022-11-20 10:50:58,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214126666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:58,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:58,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 10:50:58,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888116989] [2022-11-20 10:50:58,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:58,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 10:50:58,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:58,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 10:50:58,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:50:58,270 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2022-11-20 10:50:58,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 72 transitions, 147 flow. Second operand has 16 states, 16 states have (on average 39.4375) internal successors, (631), 16 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:58,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:50:58,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2022-11-20 10:50:58,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:50:59,974 INFO L130 PetriNetUnfolder]: 84/383 cut-off events. [2022-11-20 10:50:59,975 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:50:59,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 383 events. 84/383 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1937 event pairs, 2 based on Foata normal form. 0/357 useless extension candidates. Maximal degree in co-relation 552. Up to 29 conditions per place. [2022-11-20 10:50:59,981 INFO L137 encePairwiseOnDemand]: 52/73 looper letters, 64 selfloop transitions, 36 changer transitions 24/161 dead transitions. [2022-11-20 10:50:59,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 161 transitions, 573 flow [2022-11-20 10:50:59,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 10:50:59,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-20 10:50:59,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1078 transitions. [2022-11-20 10:50:59,999 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5906849315068493 [2022-11-20 10:51:00,000 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1078 transitions. [2022-11-20 10:51:00,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1078 transitions. [2022-11-20 10:51:00,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:00,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1078 transitions. [2022-11-20 10:51:00,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 43.12) internal successors, (1078), 25 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:00,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 73.0) internal successors, (1898), 26 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) [2022-11-20 10:51:00,028 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 73.0) internal successors, (1898), 26 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) [2022-11-20 10:51:00,030 INFO L175 Difference]: Start difference. First operand has 76 places, 72 transitions, 147 flow. Second operand 25 states and 1078 transitions. [2022-11-20 10:51:00,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 161 transitions, 573 flow [2022-11-20 10:51:00,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 161 transitions, 572 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:51:00,044 INFO L231 Difference]: Finished difference. Result has 110 places, 96 transitions, 334 flow [2022-11-20 10:51:00,046 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=334, PETRI_PLACES=110, PETRI_TRANSITIONS=96} [2022-11-20 10:51:00,052 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 34 predicate places. [2022-11-20 10:51:00,053 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 96 transitions, 334 flow [2022-11-20 10:51:00,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 39.4375) internal successors, (631), 16 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:00,054 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:00,054 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] [2022-11-20 10:51:00,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:51:00,055 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:00,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:00,057 INFO L85 PathProgramCache]: Analyzing trace with hash -651634337, now seen corresponding path program 1 times [2022-11-20 10:51:00,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:00,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559135779] [2022-11-20 10:51:00,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:00,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:00,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:00,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:00,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:00,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559135779] [2022-11-20 10:51:00,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559135779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:00,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:00,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 10:51:00,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738953816] [2022-11-20 10:51:00,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:00,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 10:51:00,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:00,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 10:51:00,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:51:00,705 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2022-11-20 10:51:00,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 96 transitions, 334 flow. Second operand has 16 states, 16 states have (on average 39.5) internal successors, (632), 16 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:00,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:00,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2022-11-20 10:51:00,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:01,938 INFO L130 PetriNetUnfolder]: 62/289 cut-off events. [2022-11-20 10:51:01,938 INFO L131 PetriNetUnfolder]: For 154/170 co-relation queries the response was YES. [2022-11-20 10:51:01,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 289 events. 62/289 cut-off events. For 154/170 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1377 event pairs, 1 based on Foata normal form. 2/282 useless extension candidates. Maximal degree in co-relation 586. Up to 45 conditions per place. [2022-11-20 10:51:01,941 INFO L137 encePairwiseOnDemand]: 52/73 looper letters, 53 selfloop transitions, 25 changer transitions 17/132 dead transitions. [2022-11-20 10:51:01,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 132 transitions, 636 flow [2022-11-20 10:51:01,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 10:51:01,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 10:51:01,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 889 transitions. [2022-11-20 10:51:01,945 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5799086757990868 [2022-11-20 10:51:01,945 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 889 transitions. [2022-11-20 10:51:01,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 889 transitions. [2022-11-20 10:51:01,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:01,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 889 transitions. [2022-11-20 10:51:01,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 42.333333333333336) internal successors, (889), 21 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:01,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 73.0) internal successors, (1606), 22 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:01,952 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 73.0) internal successors, (1606), 22 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:01,952 INFO L175 Difference]: Start difference. First operand has 110 places, 96 transitions, 334 flow. Second operand 21 states and 889 transitions. [2022-11-20 10:51:01,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 132 transitions, 636 flow [2022-11-20 10:51:01,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 132 transitions, 612 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-20 10:51:01,964 INFO L231 Difference]: Finished difference. Result has 128 places, 89 transitions, 366 flow [2022-11-20 10:51:01,965 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=366, PETRI_PLACES=128, PETRI_TRANSITIONS=89} [2022-11-20 10:51:01,966 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 52 predicate places. [2022-11-20 10:51:01,966 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 89 transitions, 366 flow [2022-11-20 10:51:01,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 39.5) internal successors, (632), 16 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:01,967 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:01,967 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] [2022-11-20 10:51:01,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:51:01,968 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:01,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:01,970 INFO L85 PathProgramCache]: Analyzing trace with hash 654835029, now seen corresponding path program 1 times [2022-11-20 10:51:01,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:01,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814544177] [2022-11-20 10:51:01,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:01,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:02,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:02,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:02,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814544177] [2022-11-20 10:51:02,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814544177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:02,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:02,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 10:51:02,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983154050] [2022-11-20 10:51:02,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:02,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 10:51:02,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:02,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 10:51:02,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:51:02,549 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2022-11-20 10:51:02,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 89 transitions, 366 flow. Second operand has 16 states, 16 states have (on average 39.4375) internal successors, (631), 16 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:02,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:02,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2022-11-20 10:51:02,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:03,640 INFO L130 PetriNetUnfolder]: 47/272 cut-off events. [2022-11-20 10:51:03,640 INFO L131 PetriNetUnfolder]: For 335/343 co-relation queries the response was YES. [2022-11-20 10:51:03,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 272 events. 47/272 cut-off events. For 335/343 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1348 event pairs, 0 based on Foata normal form. 8/271 useless extension candidates. Maximal degree in co-relation 696. Up to 38 conditions per place. [2022-11-20 10:51:03,645 INFO L137 encePairwiseOnDemand]: 53/73 looper letters, 46 selfloop transitions, 30 changer transitions 2/124 dead transitions. [2022-11-20 10:51:03,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 124 transitions, 699 flow [2022-11-20 10:51:03,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:51:03,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 10:51:03,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 758 transitions. [2022-11-20 10:51:03,649 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5768645357686454 [2022-11-20 10:51:03,649 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 758 transitions. [2022-11-20 10:51:03,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 758 transitions. [2022-11-20 10:51:03,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:03,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 758 transitions. [2022-11-20 10:51:03,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 42.111111111111114) internal successors, (758), 18 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:03,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 73.0) internal successors, (1387), 19 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:03,659 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 73.0) internal successors, (1387), 19 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:03,659 INFO L175 Difference]: Start difference. First operand has 128 places, 89 transitions, 366 flow. Second operand 18 states and 758 transitions. [2022-11-20 10:51:03,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 124 transitions, 699 flow [2022-11-20 10:51:03,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 124 transitions, 584 flow, removed 10 selfloop flow, removed 21 redundant places. [2022-11-20 10:51:03,667 INFO L231 Difference]: Finished difference. Result has 123 places, 101 transitions, 447 flow [2022-11-20 10:51:03,668 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=447, PETRI_PLACES=123, PETRI_TRANSITIONS=101} [2022-11-20 10:51:03,671 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 47 predicate places. [2022-11-20 10:51:03,671 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 101 transitions, 447 flow [2022-11-20 10:51:03,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 39.4375) internal successors, (631), 16 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:03,672 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:03,672 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] [2022-11-20 10:51:03,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:51:03,672 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:03,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:03,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1174950429, now seen corresponding path program 1 times [2022-11-20 10:51:03,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:03,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323355776] [2022-11-20 10:51:03,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:03,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:03,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:04,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:04,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:04,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323355776] [2022-11-20 10:51:04,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323355776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:04,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:04,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 10:51:04,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353683334] [2022-11-20 10:51:04,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:04,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 10:51:04,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:04,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 10:51:04,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:51:04,265 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2022-11-20 10:51:04,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 101 transitions, 447 flow. Second operand has 16 states, 16 states have (on average 39.5) internal successors, (632), 16 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:04,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:04,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2022-11-20 10:51:04,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:05,334 INFO L130 PetriNetUnfolder]: 44/259 cut-off events. [2022-11-20 10:51:05,334 INFO L131 PetriNetUnfolder]: For 215/222 co-relation queries the response was YES. [2022-11-20 10:51:05,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 705 conditions, 259 events. 44/259 cut-off events. For 215/222 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1240 event pairs, 0 based on Foata normal form. 7/262 useless extension candidates. Maximal degree in co-relation 627. Up to 30 conditions per place. [2022-11-20 10:51:05,337 INFO L137 encePairwiseOnDemand]: 51/73 looper letters, 41 selfloop transitions, 29 changer transitions 8/124 dead transitions. [2022-11-20 10:51:05,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 124 transitions, 702 flow [2022-11-20 10:51:05,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 10:51:05,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-20 10:51:05,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 796 transitions. [2022-11-20 10:51:05,340 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5739005046863734 [2022-11-20 10:51:05,340 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 796 transitions. [2022-11-20 10:51:05,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 796 transitions. [2022-11-20 10:51:05,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:05,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 796 transitions. [2022-11-20 10:51:05,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 41.89473684210526) internal successors, (796), 19 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:05,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 73.0) internal successors, (1460), 20 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:05,347 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 73.0) internal successors, (1460), 20 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:05,347 INFO L175 Difference]: Start difference. First operand has 123 places, 101 transitions, 447 flow. Second operand 19 states and 796 transitions. [2022-11-20 10:51:05,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 124 transitions, 702 flow [2022-11-20 10:51:05,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 124 transitions, 676 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-20 10:51:05,353 INFO L231 Difference]: Finished difference. Result has 135 places, 98 transitions, 490 flow [2022-11-20 10:51:05,354 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=490, PETRI_PLACES=135, PETRI_TRANSITIONS=98} [2022-11-20 10:51:05,354 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 59 predicate places. [2022-11-20 10:51:05,355 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 98 transitions, 490 flow [2022-11-20 10:51:05,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 39.5) internal successors, (632), 16 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:05,355 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:05,356 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] [2022-11-20 10:51:05,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:51:05,356 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:05,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:05,357 INFO L85 PathProgramCache]: Analyzing trace with hash -740923633, now seen corresponding path program 1 times [2022-11-20 10:51:05,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:05,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396290567] [2022-11-20 10:51:05,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:05,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:05,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:05,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:05,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396290567] [2022-11-20 10:51:05,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396290567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:05,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:05,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 10:51:05,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698687939] [2022-11-20 10:51:05,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:05,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 10:51:05,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:05,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 10:51:05,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:51:05,945 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:05,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 98 transitions, 490 flow. Second operand has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:05,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:05,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:05,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:06,408 INFO L130 PetriNetUnfolder]: 76/369 cut-off events. [2022-11-20 10:51:06,408 INFO L131 PetriNetUnfolder]: For 715/723 co-relation queries the response was YES. [2022-11-20 10:51:06,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1090 conditions, 369 events. 76/369 cut-off events. For 715/723 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1824 event pairs, 9 based on Foata normal form. 11/376 useless extension candidates. Maximal degree in co-relation 1013. Up to 40 conditions per place. [2022-11-20 10:51:06,412 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 65 selfloop transitions, 21 changer transitions 0/146 dead transitions. [2022-11-20 10:51:06,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 146 transitions, 922 flow [2022-11-20 10:51:06,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:51:06,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:51:06,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 609 transitions. [2022-11-20 10:51:06,415 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7584059775840598 [2022-11-20 10:51:06,415 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 609 transitions. [2022-11-20 10:51:06,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 609 transitions. [2022-11-20 10:51:06,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:06,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 609 transitions. [2022-11-20 10:51:06,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 55.36363636363637) internal successors, (609), 11 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:06,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:06,419 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:06,419 INFO L175 Difference]: Start difference. First operand has 135 places, 98 transitions, 490 flow. Second operand 11 states and 609 transitions. [2022-11-20 10:51:06,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 146 transitions, 922 flow [2022-11-20 10:51:06,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 146 transitions, 803 flow, removed 3 selfloop flow, removed 20 redundant places. [2022-11-20 10:51:06,427 INFO L231 Difference]: Finished difference. Result has 127 places, 108 transitions, 530 flow [2022-11-20 10:51:06,427 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=530, PETRI_PLACES=127, PETRI_TRANSITIONS=108} [2022-11-20 10:51:06,428 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 51 predicate places. [2022-11-20 10:51:06,428 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 108 transitions, 530 flow [2022-11-20 10:51:06,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:06,429 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:06,429 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] [2022-11-20 10:51:06,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:51:06,430 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:06,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:06,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1973443087, now seen corresponding path program 2 times [2022-11-20 10:51:06,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:06,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311358793] [2022-11-20 10:51:06,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:06,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:06,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:06,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:06,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311358793] [2022-11-20 10:51:06,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311358793] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:06,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:06,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 10:51:06,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240059007] [2022-11-20 10:51:06,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:06,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 10:51:06,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:06,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 10:51:06,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:51:06,899 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:06,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 108 transitions, 530 flow. Second operand has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:06,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:06,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:06,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:07,405 INFO L130 PetriNetUnfolder]: 129/626 cut-off events. [2022-11-20 10:51:07,406 INFO L131 PetriNetUnfolder]: For 867/883 co-relation queries the response was YES. [2022-11-20 10:51:07,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1851 conditions, 626 events. 129/626 cut-off events. For 867/883 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3993 event pairs, 10 based on Foata normal form. 19/639 useless extension candidates. Maximal degree in co-relation 1777. Up to 119 conditions per place. [2022-11-20 10:51:07,412 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 84 selfloop transitions, 27 changer transitions 0/171 dead transitions. [2022-11-20 10:51:07,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 171 transitions, 1124 flow [2022-11-20 10:51:07,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:51:07,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:51:07,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 615 transitions. [2022-11-20 10:51:07,415 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7658779576587795 [2022-11-20 10:51:07,415 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 615 transitions. [2022-11-20 10:51:07,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 615 transitions. [2022-11-20 10:51:07,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:07,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 615 transitions. [2022-11-20 10:51:07,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 55.90909090909091) internal successors, (615), 11 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:07,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:07,422 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:07,422 INFO L175 Difference]: Start difference. First operand has 127 places, 108 transitions, 530 flow. Second operand 11 states and 615 transitions. [2022-11-20 10:51:07,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 171 transitions, 1124 flow [2022-11-20 10:51:07,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 171 transitions, 1063 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 10:51:07,433 INFO L231 Difference]: Finished difference. Result has 138 places, 124 transitions, 720 flow [2022-11-20 10:51:07,433 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=720, PETRI_PLACES=138, PETRI_TRANSITIONS=124} [2022-11-20 10:51:07,436 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 62 predicate places. [2022-11-20 10:51:07,436 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 124 transitions, 720 flow [2022-11-20 10:51:07,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:07,437 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:07,437 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] [2022-11-20 10:51:07,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:51:07,438 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:07,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:07,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1595994481, now seen corresponding path program 3 times [2022-11-20 10:51:07,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:07,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584153873] [2022-11-20 10:51:07,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:07,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:07,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:07,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:07,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584153873] [2022-11-20 10:51:07,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584153873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:07,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:07,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 10:51:07,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963911853] [2022-11-20 10:51:07,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:07,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 10:51:07,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:07,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 10:51:07,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:51:07,953 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:07,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 124 transitions, 720 flow. Second operand has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:07,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:07,955 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:07,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:08,545 INFO L130 PetriNetUnfolder]: 137/677 cut-off events. [2022-11-20 10:51:08,545 INFO L131 PetriNetUnfolder]: For 1337/1365 co-relation queries the response was YES. [2022-11-20 10:51:08,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2128 conditions, 677 events. 137/677 cut-off events. For 1337/1365 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4449 event pairs, 16 based on Foata normal form. 23/694 useless extension candidates. Maximal degree in co-relation 2047. Up to 84 conditions per place. [2022-11-20 10:51:08,553 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 72 selfloop transitions, 40 changer transitions 0/172 dead transitions. [2022-11-20 10:51:08,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 172 transitions, 1246 flow [2022-11-20 10:51:08,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:51:08,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:51:08,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 609 transitions. [2022-11-20 10:51:08,560 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7584059775840598 [2022-11-20 10:51:08,561 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 609 transitions. [2022-11-20 10:51:08,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 609 transitions. [2022-11-20 10:51:08,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:08,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 609 transitions. [2022-11-20 10:51:08,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 55.36363636363637) internal successors, (609), 11 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:08,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:08,567 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:08,567 INFO L175 Difference]: Start difference. First operand has 138 places, 124 transitions, 720 flow. Second operand 11 states and 609 transitions. [2022-11-20 10:51:08,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 172 transitions, 1246 flow [2022-11-20 10:51:08,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 172 transitions, 1229 flow, removed 7 selfloop flow, removed 2 redundant places. [2022-11-20 10:51:08,592 INFO L231 Difference]: Finished difference. Result has 150 places, 134 transitions, 893 flow [2022-11-20 10:51:08,593 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=703, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=893, PETRI_PLACES=150, PETRI_TRANSITIONS=134} [2022-11-20 10:51:08,594 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 74 predicate places. [2022-11-20 10:51:08,595 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 134 transitions, 893 flow [2022-11-20 10:51:08,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:08,595 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:08,596 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] [2022-11-20 10:51:08,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:51:08,599 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:08,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:08,599 INFO L85 PathProgramCache]: Analyzing trace with hash 66018381, now seen corresponding path program 4 times [2022-11-20 10:51:08,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:08,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843054204] [2022-11-20 10:51:08,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:08,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:09,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:09,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:09,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843054204] [2022-11-20 10:51:09,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843054204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:09,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:09,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:51:09,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014029126] [2022-11-20 10:51:09,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:09,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:51:09,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:09,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:51:09,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:51:09,163 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:09,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 134 transitions, 893 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:09,165 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:09,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:09,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:10,006 INFO L130 PetriNetUnfolder]: 169/894 cut-off events. [2022-11-20 10:51:10,007 INFO L131 PetriNetUnfolder]: For 2480/2505 co-relation queries the response was YES. [2022-11-20 10:51:10,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2978 conditions, 894 events. 169/894 cut-off events. For 2480/2505 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6637 event pairs, 9 based on Foata normal form. 25/910 useless extension candidates. Maximal degree in co-relation 2891. Up to 97 conditions per place. [2022-11-20 10:51:10,017 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 93 selfloop transitions, 64 changer transitions 0/217 dead transitions. [2022-11-20 10:51:10,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 217 transitions, 1910 flow [2022-11-20 10:51:10,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 10:51:10,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 10:51:10,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 924 transitions. [2022-11-20 10:51:10,020 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7445608380338437 [2022-11-20 10:51:10,020 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 924 transitions. [2022-11-20 10:51:10,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 924 transitions. [2022-11-20 10:51:10,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:10,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 924 transitions. [2022-11-20 10:51:10,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 54.35294117647059) internal successors, (924), 17 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:10,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:10,027 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:10,027 INFO L175 Difference]: Start difference. First operand has 150 places, 134 transitions, 893 flow. Second operand 17 states and 924 transitions. [2022-11-20 10:51:10,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 217 transitions, 1910 flow [2022-11-20 10:51:10,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 217 transitions, 1778 flow, removed 10 selfloop flow, removed 6 redundant places. [2022-11-20 10:51:10,049 INFO L231 Difference]: Finished difference. Result has 165 places, 162 transitions, 1260 flow [2022-11-20 10:51:10,049 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1260, PETRI_PLACES=165, PETRI_TRANSITIONS=162} [2022-11-20 10:51:10,050 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 89 predicate places. [2022-11-20 10:51:10,050 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 162 transitions, 1260 flow [2022-11-20 10:51:10,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:10,051 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:10,051 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] [2022-11-20 10:51:10,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:51:10,051 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:10,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:10,052 INFO L85 PathProgramCache]: Analyzing trace with hash -707654379, now seen corresponding path program 5 times [2022-11-20 10:51:10,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:10,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917348308] [2022-11-20 10:51:10,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:10,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:10,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:10,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:10,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:10,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917348308] [2022-11-20 10:51:10,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917348308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:10,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:10,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:51:10,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36597833] [2022-11-20 10:51:10,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:10,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:51:10,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:10,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:51:10,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:51:10,515 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:10,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 162 transitions, 1260 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:10,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:10,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:10,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:11,294 INFO L130 PetriNetUnfolder]: 185/990 cut-off events. [2022-11-20 10:51:11,295 INFO L131 PetriNetUnfolder]: For 3278/3327 co-relation queries the response was YES. [2022-11-20 10:51:11,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3431 conditions, 990 events. 185/990 cut-off events. For 3278/3327 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 7679 event pairs, 22 based on Foata normal form. 47/1029 useless extension candidates. Maximal degree in co-relation 3339. Up to 103 conditions per place. [2022-11-20 10:51:11,307 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 84 selfloop transitions, 77 changer transitions 0/221 dead transitions. [2022-11-20 10:51:11,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 221 transitions, 2103 flow [2022-11-20 10:51:11,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:51:11,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-20 10:51:11,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 767 transitions. [2022-11-20 10:51:11,310 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7504892367906066 [2022-11-20 10:51:11,310 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 767 transitions. [2022-11-20 10:51:11,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 767 transitions. [2022-11-20 10:51:11,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:11,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 767 transitions. [2022-11-20 10:51:11,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 54.785714285714285) internal successors, (767), 14 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:11,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 73.0) internal successors, (1095), 15 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:11,316 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 73.0) internal successors, (1095), 15 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:11,316 INFO L175 Difference]: Start difference. First operand has 165 places, 162 transitions, 1260 flow. Second operand 14 states and 767 transitions. [2022-11-20 10:51:11,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 221 transitions, 2103 flow [2022-11-20 10:51:11,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 221 transitions, 1869 flow, removed 79 selfloop flow, removed 5 redundant places. [2022-11-20 10:51:11,350 INFO L231 Difference]: Finished difference. Result has 180 places, 179 transitions, 1534 flow [2022-11-20 10:51:11,351 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1534, PETRI_PLACES=180, PETRI_TRANSITIONS=179} [2022-11-20 10:51:11,352 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 104 predicate places. [2022-11-20 10:51:11,354 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 179 transitions, 1534 flow [2022-11-20 10:51:11,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:11,354 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:11,355 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] [2022-11-20 10:51:11,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:51:11,355 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:11,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:11,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1884845749, now seen corresponding path program 6 times [2022-11-20 10:51:11,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:11,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687966946] [2022-11-20 10:51:11,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:11,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:11,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:11,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:11,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687966946] [2022-11-20 10:51:11,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687966946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:11,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:11,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:51:11,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309924538] [2022-11-20 10:51:11,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:11,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:51:11,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:11,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:51:11,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:51:11,870 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:11,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 179 transitions, 1534 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:11,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:11,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:11,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:12,806 INFO L130 PetriNetUnfolder]: 224/1211 cut-off events. [2022-11-20 10:51:12,807 INFO L131 PetriNetUnfolder]: For 5048/5090 co-relation queries the response was YES. [2022-11-20 10:51:12,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4339 conditions, 1211 events. 224/1211 cut-off events. For 5048/5090 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 10015 event pairs, 17 based on Foata normal form. 28/1228 useless extension candidates. Maximal degree in co-relation 4241. Up to 130 conditions per place. [2022-11-20 10:51:12,821 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 123 selfloop transitions, 79 changer transitions 0/262 dead transitions. [2022-11-20 10:51:12,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 262 transitions, 2711 flow [2022-11-20 10:51:12,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 10:51:12,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 10:51:12,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 932 transitions. [2022-11-20 10:51:12,824 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7510072522159549 [2022-11-20 10:51:12,824 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 932 transitions. [2022-11-20 10:51:12,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 932 transitions. [2022-11-20 10:51:12,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:12,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 932 transitions. [2022-11-20 10:51:12,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 54.8235294117647) internal successors, (932), 17 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:12,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:12,830 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:12,830 INFO L175 Difference]: Start difference. First operand has 180 places, 179 transitions, 1534 flow. Second operand 17 states and 932 transitions. [2022-11-20 10:51:12,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 262 transitions, 2711 flow [2022-11-20 10:51:12,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 262 transitions, 2587 flow, removed 24 selfloop flow, removed 6 redundant places. [2022-11-20 10:51:12,878 INFO L231 Difference]: Finished difference. Result has 197 places, 200 transitions, 1965 flow [2022-11-20 10:51:12,878 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1451, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1965, PETRI_PLACES=197, PETRI_TRANSITIONS=200} [2022-11-20 10:51:12,879 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 121 predicate places. [2022-11-20 10:51:12,879 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 200 transitions, 1965 flow [2022-11-20 10:51:12,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:12,880 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:12,880 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] [2022-11-20 10:51:12,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 10:51:12,880 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:12,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:12,881 INFO L85 PathProgramCache]: Analyzing trace with hash 152154035, now seen corresponding path program 7 times [2022-11-20 10:51:12,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:12,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525335047] [2022-11-20 10:51:12,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:12,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:13,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:13,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:13,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525335047] [2022-11-20 10:51:13,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525335047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:13,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:13,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:51:13,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723249192] [2022-11-20 10:51:13,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:13,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:51:13,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:13,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:51:13,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:51:13,322 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:13,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 200 transitions, 1965 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:13,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:13,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:13,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:14,225 INFO L130 PetriNetUnfolder]: 268/1491 cut-off events. [2022-11-20 10:51:14,225 INFO L131 PetriNetUnfolder]: For 7239/7304 co-relation queries the response was YES. [2022-11-20 10:51:14,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5509 conditions, 1491 events. 268/1491 cut-off events. For 7239/7304 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 13183 event pairs, 33 based on Foata normal form. 43/1521 useless extension candidates. Maximal degree in co-relation 5405. Up to 185 conditions per place. [2022-11-20 10:51:14,244 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 143 selfloop transitions, 90 changer transitions 0/293 dead transitions. [2022-11-20 10:51:14,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 293 transitions, 3326 flow [2022-11-20 10:51:14,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 10:51:14,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 10:51:14,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 834 transitions. [2022-11-20 10:51:14,247 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7616438356164383 [2022-11-20 10:51:14,247 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 834 transitions. [2022-11-20 10:51:14,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 834 transitions. [2022-11-20 10:51:14,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:14,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 834 transitions. [2022-11-20 10:51:14,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 55.6) internal successors, (834), 15 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:14,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:14,258 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:14,258 INFO L175 Difference]: Start difference. First operand has 197 places, 200 transitions, 1965 flow. Second operand 15 states and 834 transitions. [2022-11-20 10:51:14,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 293 transitions, 3326 flow [2022-11-20 10:51:14,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 293 transitions, 3187 flow, removed 39 selfloop flow, removed 6 redundant places. [2022-11-20 10:51:14,317 INFO L231 Difference]: Finished difference. Result has 213 places, 225 transitions, 2480 flow [2022-11-20 10:51:14,317 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1857, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2480, PETRI_PLACES=213, PETRI_TRANSITIONS=225} [2022-11-20 10:51:14,318 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 137 predicate places. [2022-11-20 10:51:14,318 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 225 transitions, 2480 flow [2022-11-20 10:51:14,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:14,319 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:14,319 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] [2022-11-20 10:51:14,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 10:51:14,320 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:14,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:14,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1540886853, now seen corresponding path program 8 times [2022-11-20 10:51:14,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:14,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38670813] [2022-11-20 10:51:14,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:14,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:14,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:14,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38670813] [2022-11-20 10:51:14,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38670813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:14,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:14,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:51:14,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533401012] [2022-11-20 10:51:14,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:14,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:51:14,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:14,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:51:14,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:51:14,779 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:14,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 225 transitions, 2480 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:14,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:14,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:14,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:15,806 INFO L130 PetriNetUnfolder]: 271/1513 cut-off events. [2022-11-20 10:51:15,807 INFO L131 PetriNetUnfolder]: For 9184/9246 co-relation queries the response was YES. [2022-11-20 10:51:15,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5854 conditions, 1513 events. 271/1513 cut-off events. For 9184/9246 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 13429 event pairs, 41 based on Foata normal form. 30/1529 useless extension candidates. Maximal degree in co-relation 5742. Up to 149 conditions per place. [2022-11-20 10:51:15,825 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 153 selfloop transitions, 88 changer transitions 0/301 dead transitions. [2022-11-20 10:51:15,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 301 transitions, 3672 flow [2022-11-20 10:51:15,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 10:51:15,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 10:51:15,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 937 transitions. [2022-11-20 10:51:15,828 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7550362610797744 [2022-11-20 10:51:15,828 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 937 transitions. [2022-11-20 10:51:15,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 937 transitions. [2022-11-20 10:51:15,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:15,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 937 transitions. [2022-11-20 10:51:15,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 55.11764705882353) internal successors, (937), 17 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:15,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:15,835 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:15,836 INFO L175 Difference]: Start difference. First operand has 213 places, 225 transitions, 2480 flow. Second operand 17 states and 937 transitions. [2022-11-20 10:51:15,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 301 transitions, 3672 flow [2022-11-20 10:51:15,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 301 transitions, 3558 flow, removed 39 selfloop flow, removed 4 redundant places. [2022-11-20 10:51:15,908 INFO L231 Difference]: Finished difference. Result has 232 places, 241 transitions, 2886 flow [2022-11-20 10:51:15,909 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2372, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2886, PETRI_PLACES=232, PETRI_TRANSITIONS=241} [2022-11-20 10:51:15,911 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 156 predicate places. [2022-11-20 10:51:15,911 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 241 transitions, 2886 flow [2022-11-20 10:51:15,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:15,912 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:15,912 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] [2022-11-20 10:51:15,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 10:51:15,912 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:15,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:15,913 INFO L85 PathProgramCache]: Analyzing trace with hash -751078267, now seen corresponding path program 9 times [2022-11-20 10:51:15,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:15,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606236806] [2022-11-20 10:51:15,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:15,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:16,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:16,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:16,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606236806] [2022-11-20 10:51:16,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606236806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:16,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:16,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:51:16,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542530746] [2022-11-20 10:51:16,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:16,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:51:16,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:16,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:51:16,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:51:16,395 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:16,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 241 transitions, 2886 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:16,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:16,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:16,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:17,610 INFO L130 PetriNetUnfolder]: 279/1595 cut-off events. [2022-11-20 10:51:17,611 INFO L131 PetriNetUnfolder]: For 11436/11506 co-relation queries the response was YES. [2022-11-20 10:51:17,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6393 conditions, 1595 events. 279/1595 cut-off events. For 11436/11506 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 14545 event pairs, 63 based on Foata normal form. 49/1632 useless extension candidates. Maximal degree in co-relation 6274. Up to 275 conditions per place. [2022-11-20 10:51:17,636 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 168 selfloop transitions, 74 changer transitions 0/302 dead transitions. [2022-11-20 10:51:17,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 302 transitions, 4009 flow [2022-11-20 10:51:17,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 10:51:17,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 10:51:17,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 721 transitions. [2022-11-20 10:51:17,638 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7597471022128557 [2022-11-20 10:51:17,638 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 721 transitions. [2022-11-20 10:51:17,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 721 transitions. [2022-11-20 10:51:17,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:17,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 721 transitions. [2022-11-20 10:51:17,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 55.46153846153846) internal successors, (721), 13 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:17,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:17,643 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:17,643 INFO L175 Difference]: Start difference. First operand has 232 places, 241 transitions, 2886 flow. Second operand 13 states and 721 transitions. [2022-11-20 10:51:17,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 302 transitions, 4009 flow [2022-11-20 10:51:17,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 302 transitions, 3688 flow, removed 128 selfloop flow, removed 6 redundant places. [2022-11-20 10:51:17,775 INFO L231 Difference]: Finished difference. Result has 243 places, 252 transitions, 3083 flow [2022-11-20 10:51:17,775 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2693, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3083, PETRI_PLACES=243, PETRI_TRANSITIONS=252} [2022-11-20 10:51:17,779 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 167 predicate places. [2022-11-20 10:51:17,779 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 252 transitions, 3083 flow [2022-11-20 10:51:17,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:17,780 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:17,780 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] [2022-11-20 10:51:17,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 10:51:17,781 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:17,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:17,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1898240491, now seen corresponding path program 10 times [2022-11-20 10:51:17,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:17,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57798446] [2022-11-20 10:51:17,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:17,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:18,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:18,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:18,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57798446] [2022-11-20 10:51:18,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57798446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:18,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:18,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:51:18,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031324593] [2022-11-20 10:51:18,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:18,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:51:18,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:18,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:51:18,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:51:18,338 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:18,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 252 transitions, 3083 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:18,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:18,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:18,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:19,412 INFO L130 PetriNetUnfolder]: 282/1629 cut-off events. [2022-11-20 10:51:19,413 INFO L131 PetriNetUnfolder]: For 11412/11473 co-relation queries the response was YES. [2022-11-20 10:51:19,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6489 conditions, 1629 events. 282/1629 cut-off events. For 11412/11473 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 14981 event pairs, 66 based on Foata normal form. 27/1644 useless extension candidates. Maximal degree in co-relation 6366. Up to 331 conditions per place. [2022-11-20 10:51:19,440 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 184 selfloop transitions, 60 changer transitions 0/304 dead transitions. [2022-11-20 10:51:19,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 304 transitions, 4044 flow [2022-11-20 10:51:19,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:51:19,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:51:19,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 615 transitions. [2022-11-20 10:51:19,443 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7658779576587795 [2022-11-20 10:51:19,443 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 615 transitions. [2022-11-20 10:51:19,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 615 transitions. [2022-11-20 10:51:19,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:19,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 615 transitions. [2022-11-20 10:51:19,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 55.90909090909091) internal successors, (615), 11 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:19,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:19,447 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:19,447 INFO L175 Difference]: Start difference. First operand has 243 places, 252 transitions, 3083 flow. Second operand 11 states and 615 transitions. [2022-11-20 10:51:19,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 304 transitions, 4044 flow [2022-11-20 10:51:19,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 304 transitions, 3937 flow, removed 4 selfloop flow, removed 7 redundant places. [2022-11-20 10:51:19,544 INFO L231 Difference]: Finished difference. Result has 253 places, 263 transitions, 3378 flow [2022-11-20 10:51:19,545 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2980, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3378, PETRI_PLACES=253, PETRI_TRANSITIONS=263} [2022-11-20 10:51:19,546 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 177 predicate places. [2022-11-20 10:51:19,546 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 263 transitions, 3378 flow [2022-11-20 10:51:19,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:19,547 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:19,547 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] [2022-11-20 10:51:19,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 10:51:19,547 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:19,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:19,548 INFO L85 PathProgramCache]: Analyzing trace with hash 2144773403, now seen corresponding path program 11 times [2022-11-20 10:51:19,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:19,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734762155] [2022-11-20 10:51:19,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:19,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:19,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:19,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:19,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:19,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734762155] [2022-11-20 10:51:19,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734762155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:19,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:19,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:51:19,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600862051] [2022-11-20 10:51:19,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:19,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:51:19,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:19,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:51:19,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:51:19,945 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:19,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 263 transitions, 3378 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:19,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:19,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:19,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:21,073 INFO L130 PetriNetUnfolder]: 343/2068 cut-off events. [2022-11-20 10:51:21,074 INFO L131 PetriNetUnfolder]: For 15282/15356 co-relation queries the response was YES. [2022-11-20 10:51:21,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8214 conditions, 2068 events. 343/2068 cut-off events. For 15282/15356 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 20615 event pairs, 97 based on Foata normal form. 19/2068 useless extension candidates. Maximal degree in co-relation 8084. Up to 284 conditions per place. [2022-11-20 10:51:21,109 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 254 selfloop transitions, 38 changer transitions 0/352 dead transitions. [2022-11-20 10:51:21,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 352 transitions, 4996 flow [2022-11-20 10:51:21,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:51:21,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:51:21,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 630 transitions. [2022-11-20 10:51:21,111 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7845579078455791 [2022-11-20 10:51:21,112 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 630 transitions. [2022-11-20 10:51:21,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 630 transitions. [2022-11-20 10:51:21,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:21,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 630 transitions. [2022-11-20 10:51:21,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 57.27272727272727) internal successors, (630), 11 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:21,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:21,116 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:21,116 INFO L175 Difference]: Start difference. First operand has 253 places, 263 transitions, 3378 flow. Second operand 11 states and 630 transitions. [2022-11-20 10:51:21,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 352 transitions, 4996 flow [2022-11-20 10:51:21,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 352 transitions, 4832 flow, removed 44 selfloop flow, removed 6 redundant places. [2022-11-20 10:51:21,236 INFO L231 Difference]: Finished difference. Result has 262 places, 278 transitions, 3648 flow [2022-11-20 10:51:21,236 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3239, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3648, PETRI_PLACES=262, PETRI_TRANSITIONS=278} [2022-11-20 10:51:21,237 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 186 predicate places. [2022-11-20 10:51:21,237 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 278 transitions, 3648 flow [2022-11-20 10:51:21,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:21,237 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:21,238 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] [2022-11-20 10:51:21,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 10:51:21,238 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:21,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:21,239 INFO L85 PathProgramCache]: Analyzing trace with hash 2143238203, now seen corresponding path program 12 times [2022-11-20 10:51:21,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:21,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128173067] [2022-11-20 10:51:21,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:21,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:21,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:21,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:21,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128173067] [2022-11-20 10:51:21,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128173067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:21,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:21,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:51:21,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978020866] [2022-11-20 10:51:21,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:21,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:51:21,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:21,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:51:21,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:51:21,625 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:21,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 278 transitions, 3648 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:21,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:21,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:21,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:22,771 INFO L130 PetriNetUnfolder]: 343/2075 cut-off events. [2022-11-20 10:51:22,771 INFO L131 PetriNetUnfolder]: For 15257/15348 co-relation queries the response was YES. [2022-11-20 10:51:22,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8210 conditions, 2075 events. 343/2075 cut-off events. For 15257/15348 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 20743 event pairs, 98 based on Foata normal form. 28/2084 useless extension candidates. Maximal degree in co-relation 8077. Up to 292 conditions per place. [2022-11-20 10:51:22,803 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 223 selfloop transitions, 53 changer transitions 0/336 dead transitions. [2022-11-20 10:51:22,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 336 transitions, 4836 flow [2022-11-20 10:51:22,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:51:22,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:51:22,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 617 transitions. [2022-11-20 10:51:22,808 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7683686176836861 [2022-11-20 10:51:22,809 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 617 transitions. [2022-11-20 10:51:22,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 617 transitions. [2022-11-20 10:51:22,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:22,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 617 transitions. [2022-11-20 10:51:22,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.09090909090909) internal successors, (617), 11 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:22,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:22,815 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:22,817 INFO L175 Difference]: Start difference. First operand has 262 places, 278 transitions, 3648 flow. Second operand 11 states and 617 transitions. [2022-11-20 10:51:22,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 336 transitions, 4836 flow [2022-11-20 10:51:22,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 336 transitions, 4758 flow, removed 20 selfloop flow, removed 5 redundant places. [2022-11-20 10:51:22,914 INFO L231 Difference]: Finished difference. Result has 272 places, 288 transitions, 3935 flow [2022-11-20 10:51:22,914 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3571, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3935, PETRI_PLACES=272, PETRI_TRANSITIONS=288} [2022-11-20 10:51:22,914 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 196 predicate places. [2022-11-20 10:51:22,915 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 288 transitions, 3935 flow [2022-11-20 10:51:22,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:22,915 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:22,915 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] [2022-11-20 10:51:22,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 10:51:22,916 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:22,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:22,916 INFO L85 PathProgramCache]: Analyzing trace with hash -684527419, now seen corresponding path program 13 times [2022-11-20 10:51:22,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:22,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802405124] [2022-11-20 10:51:22,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:22,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:23,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:23,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:23,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802405124] [2022-11-20 10:51:23,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802405124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:23,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:23,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:51:23,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357863600] [2022-11-20 10:51:23,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:23,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:51:23,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:23,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:51:23,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:51:23,309 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:23,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 288 transitions, 3935 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:23,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:23,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:23,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:24,473 INFO L130 PetriNetUnfolder]: 340/2084 cut-off events. [2022-11-20 10:51:24,473 INFO L131 PetriNetUnfolder]: For 16505/16600 co-relation queries the response was YES. [2022-11-20 10:51:24,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8363 conditions, 2084 events. 340/2084 cut-off events. For 16505/16600 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 20907 event pairs, 94 based on Foata normal form. 31/2097 useless extension candidates. Maximal degree in co-relation 8225. Up to 284 conditions per place. [2022-11-20 10:51:24,495 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 232 selfloop transitions, 52 changer transitions 0/344 dead transitions. [2022-11-20 10:51:24,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 344 transitions, 5103 flow [2022-11-20 10:51:24,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:51:24,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:51:24,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 623 transitions. [2022-11-20 10:51:24,499 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.775840597758406 [2022-11-20 10:51:24,500 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 623 transitions. [2022-11-20 10:51:24,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 623 transitions. [2022-11-20 10:51:24,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:24,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 623 transitions. [2022-11-20 10:51:24,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.63636363636363) internal successors, (623), 11 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:24,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:24,508 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:24,508 INFO L175 Difference]: Start difference. First operand has 272 places, 288 transitions, 3935 flow. Second operand 11 states and 623 transitions. [2022-11-20 10:51:24,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 344 transitions, 5103 flow [2022-11-20 10:51:24,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 344 transitions, 5018 flow, removed 20 selfloop flow, removed 5 redundant places. [2022-11-20 10:51:24,593 INFO L231 Difference]: Finished difference. Result has 281 places, 298 transitions, 4256 flow [2022-11-20 10:51:24,594 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3855, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4256, PETRI_PLACES=281, PETRI_TRANSITIONS=298} [2022-11-20 10:51:24,594 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 205 predicate places. [2022-11-20 10:51:24,594 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 298 transitions, 4256 flow [2022-11-20 10:51:24,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:24,595 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:24,595 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] [2022-11-20 10:51:24,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 10:51:24,596 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:24,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:24,596 INFO L85 PathProgramCache]: Analyzing trace with hash 42079407, now seen corresponding path program 14 times [2022-11-20 10:51:24,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:24,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90162321] [2022-11-20 10:51:24,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:24,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:25,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:25,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:25,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90162321] [2022-11-20 10:51:25,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90162321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:25,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:25,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:51:25,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134344792] [2022-11-20 10:51:25,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:25,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:51:25,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:25,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:51:25,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:51:25,028 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:25,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 298 transitions, 4256 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:25,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:25,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:25,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:26,250 INFO L130 PetriNetUnfolder]: 330/2006 cut-off events. [2022-11-20 10:51:26,250 INFO L131 PetriNetUnfolder]: For 16408/16498 co-relation queries the response was YES. [2022-11-20 10:51:26,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8193 conditions, 2006 events. 330/2006 cut-off events. For 16408/16498 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 19866 event pairs, 94 based on Foata normal form. 22/2012 useless extension candidates. Maximal degree in co-relation 8051. Up to 284 conditions per place. [2022-11-20 10:51:26,278 INFO L137 encePairwiseOnDemand]: 61/73 looper letters, 235 selfloop transitions, 48 changer transitions 0/343 dead transitions. [2022-11-20 10:51:26,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 343 transitions, 5169 flow [2022-11-20 10:51:26,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:51:26,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:51:26,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 621 transitions. [2022-11-20 10:51:26,287 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7733499377334994 [2022-11-20 10:51:26,287 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 621 transitions. [2022-11-20 10:51:26,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 621 transitions. [2022-11-20 10:51:26,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:26,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 621 transitions. [2022-11-20 10:51:26,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.45454545454545) internal successors, (621), 11 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:26,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:26,301 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:26,302 INFO L175 Difference]: Start difference. First operand has 281 places, 298 transitions, 4256 flow. Second operand 11 states and 621 transitions. [2022-11-20 10:51:26,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 343 transitions, 5169 flow [2022-11-20 10:51:26,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 343 transitions, 5048 flow, removed 31 selfloop flow, removed 6 redundant places. [2022-11-20 10:51:26,383 INFO L231 Difference]: Finished difference. Result has 287 places, 300 transitions, 4268 flow [2022-11-20 10:51:26,384 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4061, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4268, PETRI_PLACES=287, PETRI_TRANSITIONS=300} [2022-11-20 10:51:26,384 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 211 predicate places. [2022-11-20 10:51:26,384 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 300 transitions, 4268 flow [2022-11-20 10:51:26,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:26,384 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:26,384 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] [2022-11-20 10:51:26,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 10:51:26,385 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:26,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:26,385 INFO L85 PathProgramCache]: Analyzing trace with hash -820669375, now seen corresponding path program 15 times [2022-11-20 10:51:26,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:26,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186607095] [2022-11-20 10:51:26,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:26,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:26,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:26,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:26,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:26,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186607095] [2022-11-20 10:51:26,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186607095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:26,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:26,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:51:26,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512253910] [2022-11-20 10:51:26,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:26,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:51:26,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:26,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:51:26,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:51:26,753 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:26,754 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 300 transitions, 4268 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:26,754 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:26,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:26,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:27,835 INFO L130 PetriNetUnfolder]: 317/1945 cut-off events. [2022-11-20 10:51:27,836 INFO L131 PetriNetUnfolder]: For 15355/15436 co-relation queries the response was YES. [2022-11-20 10:51:27,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7937 conditions, 1945 events. 317/1945 cut-off events. For 15355/15436 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 19137 event pairs, 85 based on Foata normal form. 30/1961 useless extension candidates. Maximal degree in co-relation 7793. Up to 284 conditions per place. [2022-11-20 10:51:27,861 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 242 selfloop transitions, 53 changer transitions 0/355 dead transitions. [2022-11-20 10:51:27,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 355 transitions, 5356 flow [2022-11-20 10:51:27,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:51:27,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-20 10:51:27,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 676 transitions. [2022-11-20 10:51:27,863 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.771689497716895 [2022-11-20 10:51:27,864 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 676 transitions. [2022-11-20 10:51:27,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 676 transitions. [2022-11-20 10:51:27,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:27,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 676 transitions. [2022-11-20 10:51:27,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 56.333333333333336) internal successors, (676), 12 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:27,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 73.0) internal successors, (949), 13 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:27,868 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 73.0) internal successors, (949), 13 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:27,868 INFO L175 Difference]: Start difference. First operand has 287 places, 300 transitions, 4268 flow. Second operand 12 states and 676 transitions. [2022-11-20 10:51:27,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 355 transitions, 5356 flow [2022-11-20 10:51:27,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 355 transitions, 5246 flow, removed 15 selfloop flow, removed 7 redundant places. [2022-11-20 10:51:27,961 INFO L231 Difference]: Finished difference. Result has 296 places, 305 transitions, 4444 flow [2022-11-20 10:51:27,961 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4089, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4444, PETRI_PLACES=296, PETRI_TRANSITIONS=305} [2022-11-20 10:51:27,962 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 220 predicate places. [2022-11-20 10:51:27,962 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 305 transitions, 4444 flow [2022-11-20 10:51:27,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:27,963 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:27,963 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] [2022-11-20 10:51:27,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 10:51:27,963 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:27,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:27,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1942622669, now seen corresponding path program 16 times [2022-11-20 10:51:27,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:27,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671530460] [2022-11-20 10:51:27,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:27,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:27,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:28,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:28,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:28,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671530460] [2022-11-20 10:51:28,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671530460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:28,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:28,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:51:28,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230232191] [2022-11-20 10:51:28,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:28,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:51:28,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:28,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:51:28,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:51:28,328 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:28,329 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 305 transitions, 4444 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:28,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:28,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:28,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:29,253 INFO L130 PetriNetUnfolder]: 307/1889 cut-off events. [2022-11-20 10:51:29,253 INFO L131 PetriNetUnfolder]: For 14997/15071 co-relation queries the response was YES. [2022-11-20 10:51:29,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7774 conditions, 1889 events. 307/1889 cut-off events. For 14997/15071 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 18331 event pairs, 46 based on Foata normal form. 25/1902 useless extension candidates. Maximal degree in co-relation 7625. Up to 156 conditions per place. [2022-11-20 10:51:29,275 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 200 selfloop transitions, 107 changer transitions 0/367 dead transitions. [2022-11-20 10:51:29,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 367 transitions, 5485 flow [2022-11-20 10:51:29,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 10:51:29,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 10:51:29,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 939 transitions. [2022-11-20 10:51:29,284 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7566478646253022 [2022-11-20 10:51:29,284 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 939 transitions. [2022-11-20 10:51:29,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 939 transitions. [2022-11-20 10:51:29,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:29,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 939 transitions. [2022-11-20 10:51:29,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 55.23529411764706) internal successors, (939), 17 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:29,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:29,291 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:29,291 INFO L175 Difference]: Start difference. First operand has 296 places, 305 transitions, 4444 flow. Second operand 17 states and 939 transitions. [2022-11-20 10:51:29,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 367 transitions, 5485 flow [2022-11-20 10:51:29,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 367 transitions, 5394 flow, removed 21 selfloop flow, removed 6 redundant places. [2022-11-20 10:51:29,430 INFO L231 Difference]: Finished difference. Result has 308 places, 307 transitions, 4603 flow [2022-11-20 10:51:29,431 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4259, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4603, PETRI_PLACES=308, PETRI_TRANSITIONS=307} [2022-11-20 10:51:29,432 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 232 predicate places. [2022-11-20 10:51:29,432 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 307 transitions, 4603 flow [2022-11-20 10:51:29,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:29,433 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:29,433 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] [2022-11-20 10:51:29,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 10:51:29,433 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:29,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:29,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1935666979, now seen corresponding path program 17 times [2022-11-20 10:51:29,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:29,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413208168] [2022-11-20 10:51:29,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:29,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:29,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:29,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:29,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413208168] [2022-11-20 10:51:29,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413208168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:29,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:29,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:51:29,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155590504] [2022-11-20 10:51:29,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:29,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:51:29,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:29,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:51:29,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:51:29,772 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:29,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 307 transitions, 4603 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:29,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:29,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:29,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:30,783 INFO L130 PetriNetUnfolder]: 311/1952 cut-off events. [2022-11-20 10:51:30,783 INFO L131 PetriNetUnfolder]: For 16515/16586 co-relation queries the response was YES. [2022-11-20 10:51:30,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8115 conditions, 1952 events. 311/1952 cut-off events. For 16515/16586 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 19214 event pairs, 44 based on Foata normal form. 37/1977 useless extension candidates. Maximal degree in co-relation 7964. Up to 164 conditions per place. [2022-11-20 10:51:30,803 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 191 selfloop transitions, 118 changer transitions 0/369 dead transitions. [2022-11-20 10:51:30,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 369 transitions, 5744 flow [2022-11-20 10:51:30,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 10:51:30,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-20 10:51:30,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 888 transitions. [2022-11-20 10:51:30,807 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7602739726027398 [2022-11-20 10:51:30,807 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 888 transitions. [2022-11-20 10:51:30,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 888 transitions. [2022-11-20 10:51:30,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:30,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 888 transitions. [2022-11-20 10:51:30,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 55.5) internal successors, (888), 16 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:30,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:30,813 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:30,814 INFO L175 Difference]: Start difference. First operand has 308 places, 307 transitions, 4603 flow. Second operand 16 states and 888 transitions. [2022-11-20 10:51:30,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 369 transitions, 5744 flow [2022-11-20 10:51:30,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 369 transitions, 5541 flow, removed 25 selfloop flow, removed 10 redundant places. [2022-11-20 10:51:30,974 INFO L231 Difference]: Finished difference. Result has 316 places, 313 transitions, 4816 flow [2022-11-20 10:51:30,975 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4404, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4816, PETRI_PLACES=316, PETRI_TRANSITIONS=313} [2022-11-20 10:51:30,975 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 240 predicate places. [2022-11-20 10:51:30,976 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 313 transitions, 4816 flow [2022-11-20 10:51:30,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:30,976 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:30,976 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] [2022-11-20 10:51:30,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 10:51:30,977 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:30,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:30,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1029775799, now seen corresponding path program 18 times [2022-11-20 10:51:30,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:30,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633364167] [2022-11-20 10:51:30,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:30,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:31,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:31,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:31,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633364167] [2022-11-20 10:51:31,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633364167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:31,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:31,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:51:31,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745527422] [2022-11-20 10:51:31,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:31,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:51:31,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:31,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:51:31,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:51:31,377 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:31,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 313 transitions, 4816 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:31,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:31,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:31,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:32,504 INFO L130 PetriNetUnfolder]: 298/1862 cut-off events. [2022-11-20 10:51:32,504 INFO L131 PetriNetUnfolder]: For 15917/15985 co-relation queries the response was YES. [2022-11-20 10:51:32,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7867 conditions, 1862 events. 298/1862 cut-off events. For 15917/15985 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 18160 event pairs, 79 based on Foata normal form. 26/1878 useless extension candidates. Maximal degree in co-relation 7714. Up to 284 conditions per place. [2022-11-20 10:51:32,520 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 246 selfloop transitions, 51 changer transitions 0/357 dead transitions. [2022-11-20 10:51:32,520 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 357 transitions, 5674 flow [2022-11-20 10:51:32,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:51:32,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-20 10:51:32,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 671 transitions. [2022-11-20 10:51:32,532 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7659817351598174 [2022-11-20 10:51:32,532 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 671 transitions. [2022-11-20 10:51:32,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 671 transitions. [2022-11-20 10:51:32,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:32,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 671 transitions. [2022-11-20 10:51:32,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 55.916666666666664) internal successors, (671), 12 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:32,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 73.0) internal successors, (949), 13 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:32,536 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 73.0) internal successors, (949), 13 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:32,536 INFO L175 Difference]: Start difference. First operand has 316 places, 313 transitions, 4816 flow. Second operand 12 states and 671 transitions. [2022-11-20 10:51:32,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 357 transitions, 5674 flow [2022-11-20 10:51:32,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 357 transitions, 5459 flow, removed 25 selfloop flow, removed 10 redundant places. [2022-11-20 10:51:32,683 INFO L231 Difference]: Finished difference. Result has 320 places, 313 transitions, 4713 flow [2022-11-20 10:51:32,683 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4486, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4713, PETRI_PLACES=320, PETRI_TRANSITIONS=313} [2022-11-20 10:51:32,684 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 244 predicate places. [2022-11-20 10:51:32,684 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 313 transitions, 4713 flow [2022-11-20 10:51:32,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:32,685 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:32,685 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] [2022-11-20 10:51:32,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 10:51:32,685 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:32,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:32,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1618257, now seen corresponding path program 19 times [2022-11-20 10:51:32,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:32,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962051449] [2022-11-20 10:51:32,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:32,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:33,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:33,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:33,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962051449] [2022-11-20 10:51:33,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962051449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:33,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:33,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:51:33,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470890412] [2022-11-20 10:51:33,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:33,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:51:33,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:33,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:51:33,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:51:33,081 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:33,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 313 transitions, 4713 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:33,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:33,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:33,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:33,977 INFO L130 PetriNetUnfolder]: 295/1850 cut-off events. [2022-11-20 10:51:33,978 INFO L131 PetriNetUnfolder]: For 15117/15182 co-relation queries the response was YES. [2022-11-20 10:51:33,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7786 conditions, 1850 events. 295/1850 cut-off events. For 15117/15182 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 17956 event pairs, 25 based on Foata normal form. 41/1879 useless extension candidates. Maximal degree in co-relation 7629. Up to 273 conditions per place. [2022-11-20 10:51:34,001 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 150 selfloop transitions, 150 changer transitions 0/360 dead transitions. [2022-11-20 10:51:34,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 360 transitions, 5813 flow [2022-11-20 10:51:34,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 10:51:34,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 10:51:34,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 817 transitions. [2022-11-20 10:51:34,004 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7461187214611872 [2022-11-20 10:51:34,004 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 817 transitions. [2022-11-20 10:51:34,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 817 transitions. [2022-11-20 10:51:34,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:34,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 817 transitions. [2022-11-20 10:51:34,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 54.46666666666667) internal successors, (817), 15 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:34,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:34,009 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:34,009 INFO L175 Difference]: Start difference. First operand has 320 places, 313 transitions, 4713 flow. Second operand 15 states and 817 transitions. [2022-11-20 10:51:34,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 360 transitions, 5813 flow [2022-11-20 10:51:34,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 360 transitions, 5683 flow, removed 18 selfloop flow, removed 8 redundant places. [2022-11-20 10:51:34,156 INFO L231 Difference]: Finished difference. Result has 330 places, 318 transitions, 5054 flow [2022-11-20 10:51:34,157 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4584, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5054, PETRI_PLACES=330, PETRI_TRANSITIONS=318} [2022-11-20 10:51:34,157 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 254 predicate places. [2022-11-20 10:51:34,158 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 318 transitions, 5054 flow [2022-11-20 10:51:34,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:34,158 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:34,158 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] [2022-11-20 10:51:34,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 10:51:34,159 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:34,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:34,159 INFO L85 PathProgramCache]: Analyzing trace with hash 728225083, now seen corresponding path program 20 times [2022-11-20 10:51:34,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:34,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377823901] [2022-11-20 10:51:34,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:34,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:34,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:34,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:34,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377823901] [2022-11-20 10:51:34,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377823901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:34,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:34,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:51:34,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129358968] [2022-11-20 10:51:34,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:34,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:51:34,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:34,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:51:34,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:51:34,487 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:34,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 318 transitions, 5054 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:34,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:34,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:34,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:35,393 INFO L130 PetriNetUnfolder]: 285/1796 cut-off events. [2022-11-20 10:51:35,393 INFO L131 PetriNetUnfolder]: For 15668/15732 co-relation queries the response was YES. [2022-11-20 10:51:35,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7771 conditions, 1796 events. 285/1796 cut-off events. For 15668/15732 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 17302 event pairs, 26 based on Foata normal form. 37/1823 useless extension candidates. Maximal degree in co-relation 7611. Up to 273 conditions per place. [2022-11-20 10:51:35,408 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 153 selfloop transitions, 146 changer transitions 0/359 dead transitions. [2022-11-20 10:51:35,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 359 transitions, 6036 flow [2022-11-20 10:51:35,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 10:51:35,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-20 10:51:35,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 864 transitions. [2022-11-20 10:51:35,417 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7397260273972602 [2022-11-20 10:51:35,417 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 864 transitions. [2022-11-20 10:51:35,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 864 transitions. [2022-11-20 10:51:35,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:35,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 864 transitions. [2022-11-20 10:51:35,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 54.0) internal successors, (864), 16 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:35,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:35,422 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:35,422 INFO L175 Difference]: Start difference. First operand has 330 places, 318 transitions, 5054 flow. Second operand 16 states and 864 transitions. [2022-11-20 10:51:35,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 359 transitions, 6036 flow [2022-11-20 10:51:35,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 359 transitions, 5713 flow, removed 43 selfloop flow, removed 9 redundant places. [2022-11-20 10:51:35,576 INFO L231 Difference]: Finished difference. Result has 337 places, 320 transitions, 5069 flow [2022-11-20 10:51:35,576 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4682, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5069, PETRI_PLACES=337, PETRI_TRANSITIONS=320} [2022-11-20 10:51:35,577 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 261 predicate places. [2022-11-20 10:51:35,577 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 320 transitions, 5069 flow [2022-11-20 10:51:35,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:35,578 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:35,578 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] [2022-11-20 10:51:35,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-20 10:51:35,578 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:35,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:35,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1684303669, now seen corresponding path program 21 times [2022-11-20 10:51:35,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:35,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8484621] [2022-11-20 10:51:35,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:35,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:35,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:35,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:35,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:35,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8484621] [2022-11-20 10:51:35,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8484621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:35,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:35,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:51:35,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426590079] [2022-11-20 10:51:35,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:35,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:51:35,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:35,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:51:35,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:51:35,960 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:35,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 320 transitions, 5069 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:35,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:35,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:35,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:36,945 INFO L130 PetriNetUnfolder]: 289/1831 cut-off events. [2022-11-20 10:51:36,945 INFO L131 PetriNetUnfolder]: For 15674/15747 co-relation queries the response was YES. [2022-11-20 10:51:36,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7907 conditions, 1831 events. 289/1831 cut-off events. For 15674/15747 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 17772 event pairs, 32 based on Foata normal form. 45/1868 useless extension candidates. Maximal degree in co-relation 7745. Up to 252 conditions per place. [2022-11-20 10:51:36,961 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 181 selfloop transitions, 128 changer transitions 0/369 dead transitions. [2022-11-20 10:51:36,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 369 transitions, 6118 flow [2022-11-20 10:51:36,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 10:51:36,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 10:51:36,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 822 transitions. [2022-11-20 10:51:36,963 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7506849315068493 [2022-11-20 10:51:36,963 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 822 transitions. [2022-11-20 10:51:36,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 822 transitions. [2022-11-20 10:51:36,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:36,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 822 transitions. [2022-11-20 10:51:36,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 54.8) internal successors, (822), 15 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:36,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:36,968 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:36,968 INFO L175 Difference]: Start difference. First operand has 337 places, 320 transitions, 5069 flow. Second operand 15 states and 822 transitions. [2022-11-20 10:51:36,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 369 transitions, 6118 flow [2022-11-20 10:51:37,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 369 transitions, 5925 flow, removed 6 selfloop flow, removed 10 redundant places. [2022-11-20 10:51:37,094 INFO L231 Difference]: Finished difference. Result has 346 places, 327 transitions, 5352 flow [2022-11-20 10:51:37,095 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4882, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5352, PETRI_PLACES=346, PETRI_TRANSITIONS=327} [2022-11-20 10:51:37,095 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 270 predicate places. [2022-11-20 10:51:37,095 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 327 transitions, 5352 flow [2022-11-20 10:51:37,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:37,096 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:37,096 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] [2022-11-20 10:51:37,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-20 10:51:37,096 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:37,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:37,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1643361633, now seen corresponding path program 22 times [2022-11-20 10:51:37,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:37,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999206129] [2022-11-20 10:51:37,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:37,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:37,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:37,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:37,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:37,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999206129] [2022-11-20 10:51:37,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999206129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:37,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:37,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:51:37,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712290767] [2022-11-20 10:51:37,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:37,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:51:37,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:37,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:51:37,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:51:37,457 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:37,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 327 transitions, 5352 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:37,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:37,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:37,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:38,506 INFO L130 PetriNetUnfolder]: 310/2003 cut-off events. [2022-11-20 10:51:38,506 INFO L131 PetriNetUnfolder]: For 18598/18674 co-relation queries the response was YES. [2022-11-20 10:51:38,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8686 conditions, 2003 events. 310/2003 cut-off events. For 18598/18674 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 20063 event pairs, 69 based on Foata normal form. 21/2013 useless extension candidates. Maximal degree in co-relation 8519. Up to 401 conditions per place. [2022-11-20 10:51:38,523 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 273 selfloop transitions, 53 changer transitions 0/386 dead transitions. [2022-11-20 10:51:38,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 386 transitions, 6663 flow [2022-11-20 10:51:38,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:51:38,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:51:38,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 623 transitions. [2022-11-20 10:51:38,541 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.775840597758406 [2022-11-20 10:51:38,541 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 623 transitions. [2022-11-20 10:51:38,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 623 transitions. [2022-11-20 10:51:38,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:38,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 623 transitions. [2022-11-20 10:51:38,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.63636363636363) internal successors, (623), 11 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:38,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:38,544 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:38,544 INFO L175 Difference]: Start difference. First operand has 346 places, 327 transitions, 5352 flow. Second operand 11 states and 623 transitions. [2022-11-20 10:51:38,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 386 transitions, 6663 flow [2022-11-20 10:51:38,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 386 transitions, 6396 flow, removed 45 selfloop flow, removed 8 redundant places. [2022-11-20 10:51:38,671 INFO L231 Difference]: Finished difference. Result has 352 places, 336 transitions, 5456 flow [2022-11-20 10:51:38,671 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5146, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5456, PETRI_PLACES=352, PETRI_TRANSITIONS=336} [2022-11-20 10:51:38,672 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 276 predicate places. [2022-11-20 10:51:38,672 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 336 transitions, 5456 flow [2022-11-20 10:51:38,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:38,672 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:38,673 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] [2022-11-20 10:51:38,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-20 10:51:38,673 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:38,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:38,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1081385977, now seen corresponding path program 23 times [2022-11-20 10:51:38,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:38,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931040551] [2022-11-20 10:51:38,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:38,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:39,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:39,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:39,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931040551] [2022-11-20 10:51:39,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931040551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:39,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:39,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:51:39,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095166021] [2022-11-20 10:51:39,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:39,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:51:39,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:39,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:51:39,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:51:39,042 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:39,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 336 transitions, 5456 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:39,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:39,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:39,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:40,035 INFO L130 PetriNetUnfolder]: 310/2005 cut-off events. [2022-11-20 10:51:40,036 INFO L131 PetriNetUnfolder]: For 17848/17924 co-relation queries the response was YES. [2022-11-20 10:51:40,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8623 conditions, 2005 events. 310/2005 cut-off events. For 17848/17924 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 20101 event pairs, 71 based on Foata normal form. 24/2018 useless extension candidates. Maximal degree in co-relation 8452. Up to 401 conditions per place. [2022-11-20 10:51:40,052 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 258 selfloop transitions, 62 changer transitions 0/380 dead transitions. [2022-11-20 10:51:40,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 380 transitions, 6544 flow [2022-11-20 10:51:40,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:51:40,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:51:40,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 615 transitions. [2022-11-20 10:51:40,054 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7658779576587795 [2022-11-20 10:51:40,054 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 615 transitions. [2022-11-20 10:51:40,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 615 transitions. [2022-11-20 10:51:40,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:40,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 615 transitions. [2022-11-20 10:51:40,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 55.90909090909091) internal successors, (615), 11 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:40,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:40,058 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:40,058 INFO L175 Difference]: Start difference. First operand has 352 places, 336 transitions, 5456 flow. Second operand 11 states and 615 transitions. [2022-11-20 10:51:40,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 380 transitions, 6544 flow [2022-11-20 10:51:40,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 380 transitions, 6388 flow, removed 13 selfloop flow, removed 7 redundant places. [2022-11-20 10:51:40,208 INFO L231 Difference]: Finished difference. Result has 359 places, 342 transitions, 5572 flow [2022-11-20 10:51:40,208 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5301, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5572, PETRI_PLACES=359, PETRI_TRANSITIONS=342} [2022-11-20 10:51:40,209 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 283 predicate places. [2022-11-20 10:51:40,209 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 342 transitions, 5572 flow [2022-11-20 10:51:40,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:40,209 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:40,210 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] [2022-11-20 10:51:40,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-20 10:51:40,210 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:40,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:40,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1924998837, now seen corresponding path program 24 times [2022-11-20 10:51:40,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:40,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078183041] [2022-11-20 10:51:40,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:40,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:40,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:40,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:40,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078183041] [2022-11-20 10:51:40,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078183041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:40,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:40,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:51:40,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311885718] [2022-11-20 10:51:40,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:40,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:51:40,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:40,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:51:40,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:51:40,633 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:40,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 342 transitions, 5572 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:40,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:40,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:40,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:41,700 INFO L130 PetriNetUnfolder]: 297/1938 cut-off events. [2022-11-20 10:51:41,700 INFO L131 PetriNetUnfolder]: For 17166/17239 co-relation queries the response was YES. [2022-11-20 10:51:41,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8370 conditions, 1938 events. 297/1938 cut-off events. For 17166/17239 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 19251 event pairs, 65 based on Foata normal form. 27/1957 useless extension candidates. Maximal degree in co-relation 8195. Up to 401 conditions per place. [2022-11-20 10:51:41,716 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 268 selfloop transitions, 56 changer transitions 0/384 dead transitions. [2022-11-20 10:51:41,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 384 transitions, 6556 flow [2022-11-20 10:51:41,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:51:41,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:51:41,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 620 transitions. [2022-11-20 10:51:41,718 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.772104607721046 [2022-11-20 10:51:41,718 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 620 transitions. [2022-11-20 10:51:41,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 620 transitions. [2022-11-20 10:51:41,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:41,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 620 transitions. [2022-11-20 10:51:41,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.36363636363637) internal successors, (620), 11 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:41,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:41,721 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:41,721 INFO L175 Difference]: Start difference. First operand has 359 places, 342 transitions, 5572 flow. Second operand 11 states and 620 transitions. [2022-11-20 10:51:41,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 384 transitions, 6556 flow [2022-11-20 10:51:41,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 384 transitions, 6443 flow, removed 15 selfloop flow, removed 6 redundant places. [2022-11-20 10:51:41,843 INFO L231 Difference]: Finished difference. Result has 366 places, 345 transitions, 5658 flow [2022-11-20 10:51:41,844 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5384, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5658, PETRI_PLACES=366, PETRI_TRANSITIONS=345} [2022-11-20 10:51:41,844 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 290 predicate places. [2022-11-20 10:51:41,844 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 345 transitions, 5658 flow [2022-11-20 10:51:41,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:41,845 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:41,845 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] [2022-11-20 10:51:41,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-20 10:51:41,845 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:41,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:41,846 INFO L85 PathProgramCache]: Analyzing trace with hash 354779151, now seen corresponding path program 25 times [2022-11-20 10:51:41,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:41,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960693446] [2022-11-20 10:51:41,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:41,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:42,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:42,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:42,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960693446] [2022-11-20 10:51:42,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960693446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:42,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:42,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:51:42,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314818726] [2022-11-20 10:51:42,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:42,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:51:42,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:42,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:51:42,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:51:42,197 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:42,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 345 transitions, 5658 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:42,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:42,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:42,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:43,269 INFO L130 PetriNetUnfolder]: 284/1863 cut-off events. [2022-11-20 10:51:43,269 INFO L131 PetriNetUnfolder]: For 16240/16312 co-relation queries the response was YES. [2022-11-20 10:51:43,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8107 conditions, 1863 events. 284/1863 cut-off events. For 16240/16312 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 18349 event pairs, 63 based on Foata normal form. 29/1886 useless extension candidates. Maximal degree in co-relation 7929. Up to 401 conditions per place. [2022-11-20 10:51:43,289 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 259 selfloop transitions, 60 changer transitions 0/379 dead transitions. [2022-11-20 10:51:43,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 379 transitions, 6484 flow [2022-11-20 10:51:43,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:51:43,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:51:43,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 618 transitions. [2022-11-20 10:51:43,291 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7696139476961394 [2022-11-20 10:51:43,292 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 618 transitions. [2022-11-20 10:51:43,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 618 transitions. [2022-11-20 10:51:43,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:43,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 618 transitions. [2022-11-20 10:51:43,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.18181818181818) internal successors, (618), 11 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:43,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:43,295 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:43,295 INFO L175 Difference]: Start difference. First operand has 366 places, 345 transitions, 5658 flow. Second operand 11 states and 618 transitions. [2022-11-20 10:51:43,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 379 transitions, 6484 flow [2022-11-20 10:51:43,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 379 transitions, 6376 flow, removed 7 selfloop flow, removed 9 redundant places. [2022-11-20 10:51:43,492 INFO L231 Difference]: Finished difference. Result has 369 places, 344 transitions, 5642 flow [2022-11-20 10:51:43,493 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5443, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5642, PETRI_PLACES=369, PETRI_TRANSITIONS=344} [2022-11-20 10:51:43,493 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 293 predicate places. [2022-11-20 10:51:43,493 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 344 transitions, 5642 flow [2022-11-20 10:51:43,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:43,494 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:43,494 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] [2022-11-20 10:51:43,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-20 10:51:43,494 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:43,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:43,495 INFO L85 PathProgramCache]: Analyzing trace with hash -884975625, now seen corresponding path program 26 times [2022-11-20 10:51:43,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:43,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414004613] [2022-11-20 10:51:43,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:43,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:43,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:43,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:43,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414004613] [2022-11-20 10:51:43,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414004613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:43,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:43,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:51:43,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694078655] [2022-11-20 10:51:43,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:43,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:51:43,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:43,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:51:43,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:51:43,898 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:43,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 344 transitions, 5642 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:43,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:43,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:43,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:44,854 INFO L130 PetriNetUnfolder]: 292/1946 cut-off events. [2022-11-20 10:51:44,855 INFO L131 PetriNetUnfolder]: For 16725/16801 co-relation queries the response was YES. [2022-11-20 10:51:44,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8425 conditions, 1946 events. 292/1946 cut-off events. For 16725/16801 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 19440 event pairs, 42 based on Foata normal form. 27/1967 useless extension candidates. Maximal degree in co-relation 8246. Up to 303 conditions per place. [2022-11-20 10:51:44,875 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 253 selfloop transitions, 101 changer transitions 0/414 dead transitions. [2022-11-20 10:51:44,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 414 transitions, 7011 flow [2022-11-20 10:51:44,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 10:51:44,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 10:51:44,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 836 transitions. [2022-11-20 10:51:44,877 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7634703196347032 [2022-11-20 10:51:44,877 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 836 transitions. [2022-11-20 10:51:44,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 836 transitions. [2022-11-20 10:51:44,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:44,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 836 transitions. [2022-11-20 10:51:44,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 55.733333333333334) internal successors, (836), 15 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:44,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:44,881 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:44,881 INFO L175 Difference]: Start difference. First operand has 369 places, 344 transitions, 5642 flow. Second operand 15 states and 836 transitions. [2022-11-20 10:51:44,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 414 transitions, 7011 flow [2022-11-20 10:51:45,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 414 transitions, 6904 flow, removed 10 selfloop flow, removed 6 redundant places. [2022-11-20 10:51:45,029 INFO L231 Difference]: Finished difference. Result has 384 places, 357 transitions, 6045 flow [2022-11-20 10:51:45,030 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5539, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=6045, PETRI_PLACES=384, PETRI_TRANSITIONS=357} [2022-11-20 10:51:45,030 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 308 predicate places. [2022-11-20 10:51:45,030 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 357 transitions, 6045 flow [2022-11-20 10:51:45,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:45,031 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:45,031 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] [2022-11-20 10:51:45,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-20 10:51:45,031 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:45,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:45,032 INFO L85 PathProgramCache]: Analyzing trace with hash 897919359, now seen corresponding path program 27 times [2022-11-20 10:51:45,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:45,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894629053] [2022-11-20 10:51:45,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:45,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:45,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:45,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:45,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894629053] [2022-11-20 10:51:45,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894629053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:45,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:45,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:51:45,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002676268] [2022-11-20 10:51:45,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:45,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:51:45,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:45,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:51:45,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:51:45,365 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:45,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 357 transitions, 6045 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:45,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:45,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:45,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:46,439 INFO L130 PetriNetUnfolder]: 313/2082 cut-off events. [2022-11-20 10:51:46,439 INFO L131 PetriNetUnfolder]: For 19461/19540 co-relation queries the response was YES. [2022-11-20 10:51:46,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9200 conditions, 2082 events. 313/2082 cut-off events. For 19461/19540 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 21126 event pairs, 38 based on Foata normal form. 32/2105 useless extension candidates. Maximal degree in co-relation 9014. Up to 303 conditions per place. [2022-11-20 10:51:46,463 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 230 selfloop transitions, 131 changer transitions 0/421 dead transitions. [2022-11-20 10:51:46,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 421 transitions, 7394 flow [2022-11-20 10:51:46,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 10:51:46,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 10:51:46,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 931 transitions. [2022-11-20 10:51:46,465 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.750201450443191 [2022-11-20 10:51:46,465 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 931 transitions. [2022-11-20 10:51:46,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 931 transitions. [2022-11-20 10:51:46,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:46,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 931 transitions. [2022-11-20 10:51:46,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 54.76470588235294) internal successors, (931), 17 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:46,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:46,470 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:46,470 INFO L175 Difference]: Start difference. First operand has 384 places, 357 transitions, 6045 flow. Second operand 17 states and 931 transitions. [2022-11-20 10:51:46,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 421 transitions, 7394 flow [2022-11-20 10:51:46,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 421 transitions, 7209 flow, removed 44 selfloop flow, removed 8 redundant places. [2022-11-20 10:51:46,636 INFO L231 Difference]: Finished difference. Result has 396 places, 369 transitions, 6446 flow [2022-11-20 10:51:46,637 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5888, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6446, PETRI_PLACES=396, PETRI_TRANSITIONS=369} [2022-11-20 10:51:46,637 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 320 predicate places. [2022-11-20 10:51:46,637 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 369 transitions, 6446 flow [2022-11-20 10:51:46,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:46,638 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:46,638 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] [2022-11-20 10:51:46,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-20 10:51:46,638 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:46,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:46,638 INFO L85 PathProgramCache]: Analyzing trace with hash -173935847, now seen corresponding path program 28 times [2022-11-20 10:51:46,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:46,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566400996] [2022-11-20 10:51:46,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:46,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:46,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:46,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:46,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566400996] [2022-11-20 10:51:46,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566400996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:46,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:46,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:51:46,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187102899] [2022-11-20 10:51:46,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:46,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:51:46,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:46,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:51:46,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:51:46,953 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:46,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 369 transitions, 6446 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:46,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:46,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:46,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:48,189 INFO L130 PetriNetUnfolder]: 343/2313 cut-off events. [2022-11-20 10:51:48,190 INFO L131 PetriNetUnfolder]: For 23388/23470 co-relation queries the response was YES. [2022-11-20 10:51:48,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10284 conditions, 2313 events. 343/2313 cut-off events. For 23388/23470 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 24167 event pairs, 46 based on Foata normal form. 21/2322 useless extension candidates. Maximal degree in co-relation 10096. Up to 303 conditions per place. [2022-11-20 10:51:48,231 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 286 selfloop transitions, 114 changer transitions 0/460 dead transitions. [2022-11-20 10:51:48,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 460 transitions, 8287 flow [2022-11-20 10:51:48,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 10:51:48,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-20 10:51:48,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 898 transitions. [2022-11-20 10:51:48,234 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7688356164383562 [2022-11-20 10:51:48,234 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 898 transitions. [2022-11-20 10:51:48,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 898 transitions. [2022-11-20 10:51:48,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:48,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 898 transitions. [2022-11-20 10:51:48,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 56.125) internal successors, (898), 16 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:48,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:48,238 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:48,238 INFO L175 Difference]: Start difference. First operand has 396 places, 369 transitions, 6446 flow. Second operand 16 states and 898 transitions. [2022-11-20 10:51:48,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 460 transitions, 8287 flow [2022-11-20 10:51:48,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 460 transitions, 7921 flow, removed 31 selfloop flow, removed 10 redundant places. [2022-11-20 10:51:48,451 INFO L231 Difference]: Finished difference. Result has 407 places, 386 transitions, 6772 flow [2022-11-20 10:51:48,451 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6121, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6772, PETRI_PLACES=407, PETRI_TRANSITIONS=386} [2022-11-20 10:51:48,452 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 331 predicate places. [2022-11-20 10:51:48,452 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 386 transitions, 6772 flow [2022-11-20 10:51:48,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:48,453 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:48,453 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] [2022-11-20 10:51:48,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-20 10:51:48,453 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:48,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:48,454 INFO L85 PathProgramCache]: Analyzing trace with hash -954566733, now seen corresponding path program 29 times [2022-11-20 10:51:48,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:48,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674323556] [2022-11-20 10:51:48,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:48,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:48,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:48,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:48,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674323556] [2022-11-20 10:51:48,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674323556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:48,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:48,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:51:48,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240666776] [2022-11-20 10:51:48,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:48,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:51:48,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:48,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:51:48,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:51:48,792 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:48,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 386 transitions, 6772 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:48,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:48,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:48,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:50,035 INFO L130 PetriNetUnfolder]: 347/2377 cut-off events. [2022-11-20 10:51:50,035 INFO L131 PetriNetUnfolder]: For 23625/23715 co-relation queries the response was YES. [2022-11-20 10:51:50,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10484 conditions, 2377 events. 347/2377 cut-off events. For 23625/23715 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 25144 event pairs, 69 based on Foata normal form. 32/2399 useless extension candidates. Maximal degree in co-relation 10290. Up to 399 conditions per place. [2022-11-20 10:51:50,058 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 318 selfloop transitions, 62 changer transitions 0/440 dead transitions. [2022-11-20 10:51:50,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 440 transitions, 8146 flow [2022-11-20 10:51:50,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:51:50,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-20 10:51:50,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 672 transitions. [2022-11-20 10:51:50,060 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7671232876712328 [2022-11-20 10:51:50,060 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 672 transitions. [2022-11-20 10:51:50,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 672 transitions. [2022-11-20 10:51:50,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:50,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 672 transitions. [2022-11-20 10:51:50,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 56.0) internal successors, (672), 12 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:50,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 73.0) internal successors, (949), 13 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:50,061 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 73.0) internal successors, (949), 13 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:50,061 INFO L175 Difference]: Start difference. First operand has 407 places, 386 transitions, 6772 flow. Second operand 12 states and 672 transitions. [2022-11-20 10:51:50,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 440 transitions, 8146 flow [2022-11-20 10:51:50,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 440 transitions, 7875 flow, removed 30 selfloop flow, removed 8 redundant places. [2022-11-20 10:51:50,230 INFO L231 Difference]: Finished difference. Result has 416 places, 396 transitions, 6936 flow [2022-11-20 10:51:50,230 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6504, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6936, PETRI_PLACES=416, PETRI_TRANSITIONS=396} [2022-11-20 10:51:50,230 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 340 predicate places. [2022-11-20 10:51:50,230 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 396 transitions, 6936 flow [2022-11-20 10:51:50,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:50,231 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:50,231 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] [2022-11-20 10:51:50,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-20 10:51:50,231 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:50,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:50,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1306141661, now seen corresponding path program 30 times [2022-11-20 10:51:50,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:50,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754006327] [2022-11-20 10:51:50,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:50,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:50,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:50,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:50,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754006327] [2022-11-20 10:51:50,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754006327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:50,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:50,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:51:50,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941630696] [2022-11-20 10:51:50,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:50,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:51:50,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:50,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:51:50,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:51:50,597 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:50,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 396 transitions, 6936 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:50,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:50,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:50,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:51,810 INFO L130 PetriNetUnfolder]: 347/2380 cut-off events. [2022-11-20 10:51:51,810 INFO L131 PetriNetUnfolder]: For 23730/23818 co-relation queries the response was YES. [2022-11-20 10:51:51,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10539 conditions, 2380 events. 347/2380 cut-off events. For 23730/23818 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 25202 event pairs, 73 based on Foata normal form. 20/2390 useless extension candidates. Maximal degree in co-relation 10339. Up to 399 conditions per place. [2022-11-20 10:51:51,839 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 339 selfloop transitions, 47 changer transitions 0/446 dead transitions. [2022-11-20 10:51:51,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 446 transitions, 8210 flow [2022-11-20 10:51:51,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:51:51,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:51:51,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 622 transitions. [2022-11-20 10:51:51,841 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7745952677459527 [2022-11-20 10:51:51,841 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 622 transitions. [2022-11-20 10:51:51,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 622 transitions. [2022-11-20 10:51:51,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:51,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 622 transitions. [2022-11-20 10:51:51,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.54545454545455) internal successors, (622), 11 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:51,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:51,845 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:51,845 INFO L175 Difference]: Start difference. First operand has 416 places, 396 transitions, 6936 flow. Second operand 11 states and 622 transitions. [2022-11-20 10:51:51,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 446 transitions, 8210 flow [2022-11-20 10:51:52,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 446 transitions, 8096 flow, removed 33 selfloop flow, removed 5 redundant places. [2022-11-20 10:51:52,055 INFO L231 Difference]: Finished difference. Result has 425 places, 402 transitions, 7113 flow [2022-11-20 10:51:52,055 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6822, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7113, PETRI_PLACES=425, PETRI_TRANSITIONS=402} [2022-11-20 10:51:52,056 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 349 predicate places. [2022-11-20 10:51:52,056 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 402 transitions, 7113 flow [2022-11-20 10:51:52,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:52,056 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:52,056 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] [2022-11-20 10:51:52,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-20 10:51:52,057 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:52,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:52,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1983801265, now seen corresponding path program 31 times [2022-11-20 10:51:52,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:52,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204992316] [2022-11-20 10:51:52,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:52,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:52,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:52,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:52,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204992316] [2022-11-20 10:51:52,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204992316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:52,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:52,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 10:51:52,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931306150] [2022-11-20 10:51:52,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:52,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 10:51:52,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:52,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 10:51:52,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:51:52,360 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:52,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 402 transitions, 7113 flow. Second operand has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:52,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:52,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:52,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:53,468 INFO L130 PetriNetUnfolder]: 334/2306 cut-off events. [2022-11-20 10:51:53,468 INFO L131 PetriNetUnfolder]: For 23501/23586 co-relation queries the response was YES. [2022-11-20 10:51:53,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10284 conditions, 2306 events. 334/2306 cut-off events. For 23501/23586 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 24245 event pairs, 74 based on Foata normal form. 19/2317 useless extension candidates. Maximal degree in co-relation 10080. Up to 399 conditions per place. [2022-11-20 10:51:53,495 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 343 selfloop transitions, 44 changer transitions 0/447 dead transitions. [2022-11-20 10:51:53,495 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 447 transitions, 8252 flow [2022-11-20 10:51:53,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:51:53,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:51:53,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 625 transitions. [2022-11-20 10:51:53,497 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7783312577833126 [2022-11-20 10:51:53,497 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 625 transitions. [2022-11-20 10:51:53,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 625 transitions. [2022-11-20 10:51:53,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:53,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 625 transitions. [2022-11-20 10:51:53,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.81818181818182) internal successors, (625), 11 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:53,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:53,500 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:53,501 INFO L175 Difference]: Start difference. First operand has 425 places, 402 transitions, 7113 flow. Second operand 11 states and 625 transitions. [2022-11-20 10:51:53,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 447 transitions, 8252 flow [2022-11-20 10:51:53,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 447 transitions, 8095 flow, removed 54 selfloop flow, removed 6 redundant places. [2022-11-20 10:51:53,793 INFO L231 Difference]: Finished difference. Result has 432 places, 403 transitions, 7099 flow [2022-11-20 10:51:53,794 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6924, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7099, PETRI_PLACES=432, PETRI_TRANSITIONS=403} [2022-11-20 10:51:53,794 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 356 predicate places. [2022-11-20 10:51:53,794 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 403 transitions, 7099 flow [2022-11-20 10:51:53,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:53,795 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:53,795 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] [2022-11-20 10:51:53,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-20 10:51:53,795 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:53,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:53,795 INFO L85 PathProgramCache]: Analyzing trace with hash -818424777, now seen corresponding path program 32 times [2022-11-20 10:51:53,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:53,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797299272] [2022-11-20 10:51:53,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:53,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:53,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:54,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:54,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:54,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797299272] [2022-11-20 10:51:54,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797299272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:54,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:54,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:51:54,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404119085] [2022-11-20 10:51:54,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:54,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:51:54,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:54,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:51:54,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:51:54,222 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:54,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 403 transitions, 7099 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:54,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:54,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:54,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:55,422 INFO L130 PetriNetUnfolder]: 321/2227 cut-off events. [2022-11-20 10:51:55,423 INFO L131 PetriNetUnfolder]: For 21516/21602 co-relation queries the response was YES. [2022-11-20 10:51:55,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9954 conditions, 2227 events. 321/2227 cut-off events. For 21516/21602 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 23253 event pairs, 67 based on Foata normal form. 38/2259 useless extension candidates. Maximal degree in co-relation 9747. Up to 399 conditions per place. [2022-11-20 10:51:55,451 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 301 selfloop transitions, 73 changer transitions 0/434 dead transitions. [2022-11-20 10:51:55,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 434 transitions, 8013 flow [2022-11-20 10:51:55,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:51:55,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:51:55,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 617 transitions. [2022-11-20 10:51:55,453 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7683686176836861 [2022-11-20 10:51:55,453 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 617 transitions. [2022-11-20 10:51:55,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 617 transitions. [2022-11-20 10:51:55,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:55,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 617 transitions. [2022-11-20 10:51:55,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.09090909090909) internal successors, (617), 11 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:55,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:55,455 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:55,455 INFO L175 Difference]: Start difference. First operand has 432 places, 403 transitions, 7099 flow. Second operand 11 states and 617 transitions. [2022-11-20 10:51:55,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 434 transitions, 8013 flow [2022-11-20 10:51:55,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 434 transitions, 7934 flow, removed 8 selfloop flow, removed 7 redundant places. [2022-11-20 10:51:55,648 INFO L231 Difference]: Finished difference. Result has 437 places, 403 transitions, 7159 flow [2022-11-20 10:51:55,649 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6919, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7159, PETRI_PLACES=437, PETRI_TRANSITIONS=403} [2022-11-20 10:51:55,649 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 361 predicate places. [2022-11-20 10:51:55,649 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 403 transitions, 7159 flow [2022-11-20 10:51:55,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:55,650 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:55,650 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] [2022-11-20 10:51:55,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-20 10:51:55,650 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:55,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:55,651 INFO L85 PathProgramCache]: Analyzing trace with hash 392108323, now seen corresponding path program 33 times [2022-11-20 10:51:55,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:55,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980699881] [2022-11-20 10:51:55,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:55,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:56,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:56,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:56,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980699881] [2022-11-20 10:51:56,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980699881] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:56,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:56,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:51:56,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236051624] [2022-11-20 10:51:56,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:56,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:51:56,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:56,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:51:56,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:51:56,100 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:56,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 403 transitions, 7159 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:56,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:56,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:56,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:57,262 INFO L130 PetriNetUnfolder]: 321/2243 cut-off events. [2022-11-20 10:51:57,262 INFO L131 PetriNetUnfolder]: For 22045/22129 co-relation queries the response was YES. [2022-11-20 10:51:57,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10082 conditions, 2243 events. 321/2243 cut-off events. For 22045/22129 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 23446 event pairs, 61 based on Foata normal form. 21/2258 useless extension candidates. Maximal degree in co-relation 9872. Up to 399 conditions per place. [2022-11-20 10:51:57,291 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 338 selfloop transitions, 51 changer transitions 0/449 dead transitions. [2022-11-20 10:51:57,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 449 transitions, 8378 flow [2022-11-20 10:51:57,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:51:57,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:51:57,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 621 transitions. [2022-11-20 10:51:57,293 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7733499377334994 [2022-11-20 10:51:57,293 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 621 transitions. [2022-11-20 10:51:57,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 621 transitions. [2022-11-20 10:51:57,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:57,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 621 transitions. [2022-11-20 10:51:57,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.45454545454545) internal successors, (621), 11 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:57,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:57,295 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:57,295 INFO L175 Difference]: Start difference. First operand has 437 places, 403 transitions, 7159 flow. Second operand 11 states and 621 transitions. [2022-11-20 10:51:57,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 449 transitions, 8378 flow [2022-11-20 10:51:57,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 449 transitions, 8244 flow, removed 5 selfloop flow, removed 7 redundant places. [2022-11-20 10:51:57,486 INFO L231 Difference]: Finished difference. Result has 444 places, 409 transitions, 7330 flow [2022-11-20 10:51:57,487 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7033, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7330, PETRI_PLACES=444, PETRI_TRANSITIONS=409} [2022-11-20 10:51:57,487 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 368 predicate places. [2022-11-20 10:51:57,488 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 409 transitions, 7330 flow [2022-11-20 10:51:57,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:57,488 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:57,488 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] [2022-11-20 10:51:57,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-20 10:51:57,488 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:57,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:57,489 INFO L85 PathProgramCache]: Analyzing trace with hash 109912489, now seen corresponding path program 34 times [2022-11-20 10:51:57,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:57,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552265862] [2022-11-20 10:51:57,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:57,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:57,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:57,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:57,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:57,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552265862] [2022-11-20 10:51:57,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552265862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:57,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:57,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 10:51:57,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909472364] [2022-11-20 10:51:57,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:57,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 10:51:57,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:57,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 10:51:57,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:51:57,927 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:57,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 409 transitions, 7330 flow. Second operand has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:57,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:57,927 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:57,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:59,055 INFO L130 PetriNetUnfolder]: 308/2169 cut-off events. [2022-11-20 10:51:59,055 INFO L131 PetriNetUnfolder]: For 21700/21781 co-relation queries the response was YES. [2022-11-20 10:51:59,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9791 conditions, 2169 events. 308/2169 cut-off events. For 21700/21781 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 22532 event pairs, 61 based on Foata normal form. 22/2187 useless extension candidates. Maximal degree in co-relation 9577. Up to 399 conditions per place. [2022-11-20 10:51:59,084 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 340 selfloop transitions, 50 changer transitions 0/450 dead transitions. [2022-11-20 10:51:59,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 450 transitions, 8377 flow [2022-11-20 10:51:59,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:51:59,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:51:59,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 624 transitions. [2022-11-20 10:51:59,086 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7770859277708593 [2022-11-20 10:51:59,086 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 624 transitions. [2022-11-20 10:51:59,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 624 transitions. [2022-11-20 10:51:59,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:59,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 624 transitions. [2022-11-20 10:51:59,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.72727272727273) internal successors, (624), 11 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:59,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:59,089 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:59,089 INFO L175 Difference]: Start difference. First operand has 444 places, 409 transitions, 7330 flow. Second operand 11 states and 624 transitions. [2022-11-20 10:51:59,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 450 transitions, 8377 flow [2022-11-20 10:51:59,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 450 transitions, 8184 flow, removed 62 selfloop flow, removed 6 redundant places. [2022-11-20 10:51:59,429 INFO L231 Difference]: Finished difference. Result has 451 places, 410 transitions, 7282 flow [2022-11-20 10:51:59,430 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7101, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7282, PETRI_PLACES=451, PETRI_TRANSITIONS=410} [2022-11-20 10:51:59,431 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 375 predicate places. [2022-11-20 10:51:59,431 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 410 transitions, 7282 flow [2022-11-20 10:51:59,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:59,431 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:59,431 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] [2022-11-20 10:51:59,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-20 10:51:59,432 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:51:59,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:59,432 INFO L85 PathProgramCache]: Analyzing trace with hash -729461189, now seen corresponding path program 35 times [2022-11-20 10:51:59,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:59,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870289405] [2022-11-20 10:51:59,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:59,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:59,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:59,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:59,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870289405] [2022-11-20 10:51:59,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870289405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:59,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:59,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:51:59,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162258578] [2022-11-20 10:51:59,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:59,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:51:59,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:59,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:51:59,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:51:59,793 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:51:59,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 410 transitions, 7282 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:59,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:59,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:51:59,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:52:01,271 INFO L130 PetriNetUnfolder]: 308/2177 cut-off events. [2022-11-20 10:52:01,271 INFO L131 PetriNetUnfolder]: For 20818/20901 co-relation queries the response was YES. [2022-11-20 10:52:01,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9799 conditions, 2177 events. 308/2177 cut-off events. For 20818/20901 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 22601 event pairs, 50 based on Foata normal form. 33/2206 useless extension candidates. Maximal degree in co-relation 9582. Up to 507 conditions per place. [2022-11-20 10:52:01,294 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 307 selfloop transitions, 75 changer transitions 0/442 dead transitions. [2022-11-20 10:52:01,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 442 transitions, 8380 flow [2022-11-20 10:52:01,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:52:01,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:52:01,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 611 transitions. [2022-11-20 10:52:01,296 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7608966376089664 [2022-11-20 10:52:01,296 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 611 transitions. [2022-11-20 10:52:01,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 611 transitions. [2022-11-20 10:52:01,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:52:01,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 611 transitions. [2022-11-20 10:52:01,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 55.54545454545455) internal successors, (611), 11 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:01,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:01,299 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:01,300 INFO L175 Difference]: Start difference. First operand has 451 places, 410 transitions, 7282 flow. Second operand 11 states and 611 transitions. [2022-11-20 10:52:01,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 442 transitions, 8380 flow [2022-11-20 10:52:01,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 442 transitions, 8285 flow, removed 7 selfloop flow, removed 7 redundant places. [2022-11-20 10:52:01,563 INFO L231 Difference]: Finished difference. Result has 459 places, 417 transitions, 7593 flow [2022-11-20 10:52:01,563 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7189, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7593, PETRI_PLACES=459, PETRI_TRANSITIONS=417} [2022-11-20 10:52:01,564 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 383 predicate places. [2022-11-20 10:52:01,564 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 417 transitions, 7593 flow [2022-11-20 10:52:01,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:01,564 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:52:01,565 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] [2022-11-20 10:52:01,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-20 10:52:01,565 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:52:01,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:01,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1277722933, now seen corresponding path program 36 times [2022-11-20 10:52:01,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:01,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221630125] [2022-11-20 10:52:01,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:01,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:01,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:52:01,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:01,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221630125] [2022-11-20 10:52:01,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221630125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:01,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:01,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 10:52:01,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54618499] [2022-11-20 10:52:01,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:01,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 10:52:01,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:01,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 10:52:01,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:52:01,859 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:52:01,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 417 transitions, 7593 flow. Second operand has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:01,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:52:01,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:52:01,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:52:02,787 INFO L130 PetriNetUnfolder]: 322/2310 cut-off events. [2022-11-20 10:52:02,787 INFO L131 PetriNetUnfolder]: For 23859/23945 co-relation queries the response was YES. [2022-11-20 10:52:02,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10428 conditions, 2310 events. 322/2310 cut-off events. For 23859/23945 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 24424 event pairs, 58 based on Foata normal form. 31/2334 useless extension candidates. Maximal degree in co-relation 10206. Up to 507 conditions per place. [2022-11-20 10:52:02,818 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 336 selfloop transitions, 64 changer transitions 0/460 dead transitions. [2022-11-20 10:52:02,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 460 transitions, 8888 flow [2022-11-20 10:52:02,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:52:02,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:52:02,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 619 transitions. [2022-11-20 10:52:02,820 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7708592777085927 [2022-11-20 10:52:02,820 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 619 transitions. [2022-11-20 10:52:02,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 619 transitions. [2022-11-20 10:52:02,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:52:02,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 619 transitions. [2022-11-20 10:52:02,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.27272727272727) internal successors, (619), 11 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:02,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:02,822 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:02,822 INFO L175 Difference]: Start difference. First operand has 459 places, 417 transitions, 7593 flow. Second operand 11 states and 619 transitions. [2022-11-20 10:52:02,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 460 transitions, 8888 flow [2022-11-20 10:52:03,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 460 transitions, 8670 flow, removed 78 selfloop flow, removed 7 redundant places. [2022-11-20 10:52:03,043 INFO L231 Difference]: Finished difference. Result has 466 places, 425 transitions, 7806 flow [2022-11-20 10:52:03,043 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7437, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7806, PETRI_PLACES=466, PETRI_TRANSITIONS=425} [2022-11-20 10:52:03,043 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 390 predicate places. [2022-11-20 10:52:03,044 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 425 transitions, 7806 flow [2022-11-20 10:52:03,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:03,044 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:52:03,044 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] [2022-11-20 10:52:03,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-20 10:52:03,044 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:52:03,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:03,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1456068015, now seen corresponding path program 37 times [2022-11-20 10:52:03,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:03,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286802596] [2022-11-20 10:52:03,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:03,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:03,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:52:03,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:03,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286802596] [2022-11-20 10:52:03,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286802596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:03,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:03,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:52:03,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331447027] [2022-11-20 10:52:03,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:03,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:52:03,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:03,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:52:03,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:52:03,378 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-20 10:52:03,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 425 transitions, 7806 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:03,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:52:03,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-20 10:52:03,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:52:04,523 INFO L130 PetriNetUnfolder]: 309/2246 cut-off events. [2022-11-20 10:52:04,523 INFO L131 PetriNetUnfolder]: For 22518/22607 co-relation queries the response was YES. [2022-11-20 10:52:04,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10103 conditions, 2246 events. 309/2246 cut-off events. For 22518/22607 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 23641 event pairs, 53 based on Foata normal form. 38/2279 useless extension candidates. Maximal degree in co-relation 9880. Up to 507 conditions per place. [2022-11-20 10:52:04,555 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 318 selfloop transitions, 73 changer transitions 0/451 dead transitions. [2022-11-20 10:52:04,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 451 transitions, 8753 flow [2022-11-20 10:52:04,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:52:04,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:52:04,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 614 transitions. [2022-11-20 10:52:04,556 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7646326276463262 [2022-11-20 10:52:04,556 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 614 transitions. [2022-11-20 10:52:04,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 614 transitions. [2022-11-20 10:52:04,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:52:04,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 614 transitions. [2022-11-20 10:52:04,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 55.81818181818182) internal successors, (614), 11 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:04,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:04,559 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:04,559 INFO L175 Difference]: Start difference. First operand has 466 places, 425 transitions, 7806 flow. Second operand 11 states and 614 transitions. [2022-11-20 10:52:04,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 451 transitions, 8753 flow [2022-11-20 10:52:04,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 451 transitions, 8615 flow, removed 16 selfloop flow, removed 8 redundant places. [2022-11-20 10:52:04,777 INFO L231 Difference]: Finished difference. Result has 471 places, 427 transitions, 7881 flow [2022-11-20 10:52:04,777 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7604, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7881, PETRI_PLACES=471, PETRI_TRANSITIONS=427} [2022-11-20 10:52:04,778 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 395 predicate places. [2022-11-20 10:52:04,778 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 427 transitions, 7881 flow [2022-11-20 10:52:04,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:04,778 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:52:04,779 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] [2022-11-20 10:52:04,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-20 10:52:04,779 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:52:04,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:04,779 INFO L85 PathProgramCache]: Analyzing trace with hash -460313033, now seen corresponding path program 38 times [2022-11-20 10:52:04,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:04,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991811423] [2022-11-20 10:52:04,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:04,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:04,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:05,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:52:05,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:05,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991811423] [2022-11-20 10:52:05,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991811423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:05,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:05,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 10:52:05,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555381814] [2022-11-20 10:52:05,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:05,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 10:52:05,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:05,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 10:52:05,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:52:05,171 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 73 [2022-11-20 10:52:05,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 427 transitions, 7881 flow. Second operand has 13 states, 13 states have (on average 47.84615384615385) internal successors, (622), 13 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:05,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:52:05,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 73 [2022-11-20 10:52:05,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:52:06,354 INFO L130 PetriNetUnfolder]: 299/2167 cut-off events. [2022-11-20 10:52:06,354 INFO L131 PetriNetUnfolder]: For 21248/21330 co-relation queries the response was YES. [2022-11-20 10:52:06,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9851 conditions, 2167 events. 299/2167 cut-off events. For 21248/21330 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 22585 event pairs, 50 based on Foata normal form. 27/2192 useless extension candidates. Maximal degree in co-relation 9624. Up to 507 conditions per place. [2022-11-20 10:52:06,380 INFO L137 encePairwiseOnDemand]: 59/73 looper letters, 326 selfloop transitions, 66 changer transitions 0/449 dead transitions. [2022-11-20 10:52:06,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 449 transitions, 8740 flow [2022-11-20 10:52:06,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 10:52:06,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 10:52:06,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 672 transitions. [2022-11-20 10:52:06,381 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.708113804004215 [2022-11-20 10:52:06,382 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 672 transitions. [2022-11-20 10:52:06,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 672 transitions. [2022-11-20 10:52:06,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:52:06,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 672 transitions. [2022-11-20 10:52:06,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 51.69230769230769) internal successors, (672), 13 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:06,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:06,385 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:06,385 INFO L175 Difference]: Start difference. First operand has 471 places, 427 transitions, 7881 flow. Second operand 13 states and 672 transitions. [2022-11-20 10:52:06,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 449 transitions, 8740 flow [2022-11-20 10:52:06,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 449 transitions, 8565 flow, removed 30 selfloop flow, removed 7 redundant places. [2022-11-20 10:52:06,598 INFO L231 Difference]: Finished difference. Result has 477 places, 425 transitions, 7775 flow [2022-11-20 10:52:06,599 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7638, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7775, PETRI_PLACES=477, PETRI_TRANSITIONS=425} [2022-11-20 10:52:06,599 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 401 predicate places. [2022-11-20 10:52:06,599 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 425 transitions, 7775 flow [2022-11-20 10:52:06,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 47.84615384615385) internal successors, (622), 13 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:06,599 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:52:06,600 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] [2022-11-20 10:52:06,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-20 10:52:06,600 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:52:06,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:06,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1085029204, now seen corresponding path program 1 times [2022-11-20 10:52:06,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:06,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216616833] [2022-11-20 10:52:06,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:06,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:06,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:07,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:52:07,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:07,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216616833] [2022-11-20 10:52:07,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216616833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:07,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:07,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:52:07,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973487418] [2022-11-20 10:52:07,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:07,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:52:07,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:07,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:52:07,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:52:07,486 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:52:07,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 425 transitions, 7775 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:07,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:52:07,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:52:07,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:52:11,255 INFO L130 PetriNetUnfolder]: 726/2965 cut-off events. [2022-11-20 10:52:11,256 INFO L131 PetriNetUnfolder]: For 36964/36968 co-relation queries the response was YES. [2022-11-20 10:52:11,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15652 conditions, 2965 events. 726/2965 cut-off events. For 36964/36968 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 28574 event pairs, 117 based on Foata normal form. 3/2948 useless extension candidates. Maximal degree in co-relation 15418. Up to 814 conditions per place. [2022-11-20 10:52:11,298 INFO L137 encePairwiseOnDemand]: 47/73 looper letters, 523 selfloop transitions, 72 changer transitions 0/620 dead transitions. [2022-11-20 10:52:11,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 620 transitions, 11882 flow [2022-11-20 10:52:11,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-20 10:52:11,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-20 10:52:11,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 895 transitions. [2022-11-20 10:52:11,300 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.437866927592955 [2022-11-20 10:52:11,301 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 895 transitions. [2022-11-20 10:52:11,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 895 transitions. [2022-11-20 10:52:11,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:52:11,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 895 transitions. [2022-11-20 10:52:11,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 31.964285714285715) internal successors, (895), 28 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:11,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 73.0) internal successors, (2117), 29 states have internal predecessors, (2117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:11,306 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 73.0) internal successors, (2117), 29 states have internal predecessors, (2117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:11,306 INFO L175 Difference]: Start difference. First operand has 477 places, 425 transitions, 7775 flow. Second operand 28 states and 895 transitions. [2022-11-20 10:52:11,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 620 transitions, 11882 flow [2022-11-20 10:52:11,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 620 transitions, 11753 flow, removed 2 selfloop flow, removed 9 redundant places. [2022-11-20 10:52:11,596 INFO L231 Difference]: Finished difference. Result has 506 places, 453 transitions, 8168 flow [2022-11-20 10:52:11,597 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7662, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=8168, PETRI_PLACES=506, PETRI_TRANSITIONS=453} [2022-11-20 10:52:11,597 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 430 predicate places. [2022-11-20 10:52:11,597 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 453 transitions, 8168 flow [2022-11-20 10:52:11,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:11,598 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:52:11,598 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] [2022-11-20 10:52:11,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-20 10:52:11,598 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:52:11,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:11,599 INFO L85 PathProgramCache]: Analyzing trace with hash 632861442, now seen corresponding path program 2 times [2022-11-20 10:52:11,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:11,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080556334] [2022-11-20 10:52:11,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:11,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:12,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:52:12,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:12,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080556334] [2022-11-20 10:52:12,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080556334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:12,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:12,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:52:12,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812592180] [2022-11-20 10:52:12,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:12,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:52:12,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:12,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:52:12,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:52:12,406 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:52:12,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 453 transitions, 8168 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:12,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:52:12,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:52:12,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:52:16,051 INFO L130 PetriNetUnfolder]: 725/3008 cut-off events. [2022-11-20 10:52:16,051 INFO L131 PetriNetUnfolder]: For 38873/38877 co-relation queries the response was YES. [2022-11-20 10:52:16,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16767 conditions, 3008 events. 725/3008 cut-off events. For 38873/38877 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 29464 event pairs, 185 based on Foata normal form. 3/2991 useless extension candidates. Maximal degree in co-relation 16518. Up to 1139 conditions per place. [2022-11-20 10:52:16,098 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 487 selfloop transitions, 79 changer transitions 0/591 dead transitions. [2022-11-20 10:52:16,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 591 transitions, 11233 flow [2022-11-20 10:52:16,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 10:52:16,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-20 10:52:16,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 862 transitions. [2022-11-20 10:52:16,100 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43734145104008115 [2022-11-20 10:52:16,100 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 862 transitions. [2022-11-20 10:52:16,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 862 transitions. [2022-11-20 10:52:16,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:52:16,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 862 transitions. [2022-11-20 10:52:16,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 31.925925925925927) internal successors, (862), 27 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:16,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 73.0) internal successors, (2044), 28 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:16,102 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 73.0) internal successors, (2044), 28 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:16,102 INFO L175 Difference]: Start difference. First operand has 506 places, 453 transitions, 8168 flow. Second operand 27 states and 862 transitions. [2022-11-20 10:52:16,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 591 transitions, 11233 flow [2022-11-20 10:52:16,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 591 transitions, 11193 flow, removed 6 selfloop flow, removed 9 redundant places. [2022-11-20 10:52:16,577 INFO L231 Difference]: Finished difference. Result has 534 places, 468 transitions, 8491 flow [2022-11-20 10:52:16,577 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8130, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=8491, PETRI_PLACES=534, PETRI_TRANSITIONS=468} [2022-11-20 10:52:16,578 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 458 predicate places. [2022-11-20 10:52:16,578 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 468 transitions, 8491 flow [2022-11-20 10:52:16,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:16,578 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:52:16,578 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] [2022-11-20 10:52:16,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-20 10:52:16,578 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:52:16,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:16,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1413720348, now seen corresponding path program 3 times [2022-11-20 10:52:16,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:16,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451223827] [2022-11-20 10:52:16,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:16,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:17,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:52:17,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:17,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451223827] [2022-11-20 10:52:17,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451223827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:17,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:17,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:52:17,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120626219] [2022-11-20 10:52:17,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:17,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:52:17,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:17,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:52:17,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:52:17,403 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:52:17,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 468 transitions, 8491 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:17,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:52:17,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:52:17,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:52:21,795 INFO L130 PetriNetUnfolder]: 725/3005 cut-off events. [2022-11-20 10:52:21,795 INFO L131 PetriNetUnfolder]: For 41929/41933 co-relation queries the response was YES. [2022-11-20 10:52:21,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17496 conditions, 3005 events. 725/3005 cut-off events. For 41929/41933 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 29185 event pairs, 125 based on Foata normal form. 3/2988 useless extension candidates. Maximal degree in co-relation 17234. Up to 832 conditions per place. [2022-11-20 10:52:21,846 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 525 selfloop transitions, 100 changer transitions 0/650 dead transitions. [2022-11-20 10:52:21,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 650 transitions, 12562 flow [2022-11-20 10:52:21,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 10:52:21,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 10:52:21,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1066 transitions. [2022-11-20 10:52:21,849 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42949234488315874 [2022-11-20 10:52:21,849 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1066 transitions. [2022-11-20 10:52:21,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1066 transitions. [2022-11-20 10:52:21,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:52:21,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1066 transitions. [2022-11-20 10:52:21,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 31.352941176470587) internal successors, (1066), 34 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:21,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 73.0) internal successors, (2555), 35 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:21,855 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 73.0) internal successors, (2555), 35 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:21,855 INFO L175 Difference]: Start difference. First operand has 534 places, 468 transitions, 8491 flow. Second operand 34 states and 1066 transitions. [2022-11-20 10:52:21,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 650 transitions, 12562 flow [2022-11-20 10:52:22,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 650 transitions, 12478 flow, removed 7 selfloop flow, removed 11 redundant places. [2022-11-20 10:52:22,366 INFO L231 Difference]: Finished difference. Result has 563 places, 488 transitions, 9006 flow [2022-11-20 10:52:22,366 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8411, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=9006, PETRI_PLACES=563, PETRI_TRANSITIONS=488} [2022-11-20 10:52:22,367 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 487 predicate places. [2022-11-20 10:52:22,367 INFO L495 AbstractCegarLoop]: Abstraction has has 563 places, 488 transitions, 9006 flow [2022-11-20 10:52:22,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:22,367 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:52:22,368 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] [2022-11-20 10:52:22,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-20 10:52:22,368 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:52:22,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:22,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1466061754, now seen corresponding path program 4 times [2022-11-20 10:52:22,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:22,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726606005] [2022-11-20 10:52:22,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:22,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:23,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:52:23,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:23,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726606005] [2022-11-20 10:52:23,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726606005] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:23,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:23,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:52:23,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404072485] [2022-11-20 10:52:23,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:23,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:52:23,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:23,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:52:23,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:52:23,184 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:52:23,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 488 transitions, 9006 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:23,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:52:23,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:52:23,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:52:27,641 INFO L130 PetriNetUnfolder]: 725/3042 cut-off events. [2022-11-20 10:52:27,641 INFO L131 PetriNetUnfolder]: For 46058/46062 co-relation queries the response was YES. [2022-11-20 10:52:27,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18403 conditions, 3042 events. 725/3042 cut-off events. For 46058/46062 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 29985 event pairs, 185 based on Foata normal form. 3/3025 useless extension candidates. Maximal degree in co-relation 18133. Up to 1123 conditions per place. [2022-11-20 10:52:27,686 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 488 selfloop transitions, 103 changer transitions 0/616 dead transitions. [2022-11-20 10:52:27,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 616 transitions, 12105 flow [2022-11-20 10:52:27,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 10:52:27,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-20 10:52:27,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1004 transitions. [2022-11-20 10:52:27,689 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4297945205479452 [2022-11-20 10:52:27,689 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1004 transitions. [2022-11-20 10:52:27,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1004 transitions. [2022-11-20 10:52:27,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:52:27,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1004 transitions. [2022-11-20 10:52:27,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 31.375) internal successors, (1004), 32 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:27,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 73.0) internal successors, (2409), 33 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:27,694 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 73.0) internal successors, (2409), 33 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:27,694 INFO L175 Difference]: Start difference. First operand has 563 places, 488 transitions, 9006 flow. Second operand 32 states and 1004 transitions. [2022-11-20 10:52:27,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 616 transitions, 12105 flow [2022-11-20 10:52:28,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 616 transitions, 11952 flow, removed 30 selfloop flow, removed 17 redundant places. [2022-11-20 10:52:28,235 INFO L231 Difference]: Finished difference. Result has 582 places, 493 transitions, 9202 flow [2022-11-20 10:52:28,235 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8858, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=9202, PETRI_PLACES=582, PETRI_TRANSITIONS=493} [2022-11-20 10:52:28,236 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 506 predicate places. [2022-11-20 10:52:28,236 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 493 transitions, 9202 flow [2022-11-20 10:52:28,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:28,236 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:52:28,236 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] [2022-11-20 10:52:28,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-20 10:52:28,237 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:52:28,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:28,237 INFO L85 PathProgramCache]: Analyzing trace with hash -994901186, now seen corresponding path program 5 times [2022-11-20 10:52:28,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:28,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620780633] [2022-11-20 10:52:28,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:28,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:29,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:52:29,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:29,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620780633] [2022-11-20 10:52:29,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620780633] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:29,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:29,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:52:29,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720596887] [2022-11-20 10:52:29,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:29,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:52:29,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:29,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:52:29,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:52:29,027 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:52:29,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 493 transitions, 9202 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:29,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:52:29,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:52:29,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:52:33,018 INFO L130 PetriNetUnfolder]: 729/3048 cut-off events. [2022-11-20 10:52:33,018 INFO L131 PetriNetUnfolder]: For 48163/48167 co-relation queries the response was YES. [2022-11-20 10:52:33,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18705 conditions, 3048 events. 729/3048 cut-off events. For 48163/48167 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 29812 event pairs, 121 based on Foata normal form. 3/3031 useless extension candidates. Maximal degree in co-relation 18462. Up to 824 conditions per place. [2022-11-20 10:52:33,067 INFO L137 encePairwiseOnDemand]: 47/73 looper letters, 548 selfloop transitions, 105 changer transitions 0/678 dead transitions. [2022-11-20 10:52:33,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 678 transitions, 13515 flow [2022-11-20 10:52:33,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 10:52:33,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-20 10:52:33,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 978 transitions. [2022-11-20 10:52:33,070 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4321696862571807 [2022-11-20 10:52:33,070 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 978 transitions. [2022-11-20 10:52:33,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 978 transitions. [2022-11-20 10:52:33,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:52:33,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 978 transitions. [2022-11-20 10:52:33,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 31.548387096774192) internal successors, (978), 31 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:33,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 73.0) internal successors, (2336), 32 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:33,074 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 73.0) internal successors, (2336), 32 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:33,074 INFO L175 Difference]: Start difference. First operand has 582 places, 493 transitions, 9202 flow. Second operand 31 states and 978 transitions. [2022-11-20 10:52:33,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 678 transitions, 13515 flow [2022-11-20 10:52:33,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 678 transitions, 13334 flow, removed 18 selfloop flow, removed 26 redundant places. [2022-11-20 10:52:33,478 INFO L231 Difference]: Finished difference. Result has 596 places, 511 transitions, 9658 flow [2022-11-20 10:52:33,479 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9034, PETRI_DIFFERENCE_MINUEND_PLACES=556, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=9658, PETRI_PLACES=596, PETRI_TRANSITIONS=511} [2022-11-20 10:52:33,479 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 520 predicate places. [2022-11-20 10:52:33,479 INFO L495 AbstractCegarLoop]: Abstraction has has 596 places, 511 transitions, 9658 flow [2022-11-20 10:52:33,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:33,480 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:52:33,480 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] [2022-11-20 10:52:33,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-20 10:52:33,480 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:52:33,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:33,480 INFO L85 PathProgramCache]: Analyzing trace with hash 246125894, now seen corresponding path program 6 times [2022-11-20 10:52:33,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:33,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866422964] [2022-11-20 10:52:33,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:33,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:34,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:52:34,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:34,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866422964] [2022-11-20 10:52:34,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866422964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:34,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:34,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:52:34,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025711263] [2022-11-20 10:52:34,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:34,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:52:34,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:34,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:52:34,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:52:34,258 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:52:34,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 596 places, 511 transitions, 9658 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:34,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:52:34,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:52:34,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:52:38,360 INFO L130 PetriNetUnfolder]: 728/3060 cut-off events. [2022-11-20 10:52:38,360 INFO L131 PetriNetUnfolder]: For 51186/51190 co-relation queries the response was YES. [2022-11-20 10:52:38,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19401 conditions, 3060 events. 728/3060 cut-off events. For 51186/51190 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 29983 event pairs, 121 based on Foata normal form. 3/3043 useless extension candidates. Maximal degree in co-relation 19145. Up to 854 conditions per place. [2022-11-20 10:52:38,412 INFO L137 encePairwiseOnDemand]: 47/73 looper letters, 557 selfloop transitions, 102 changer transitions 0/684 dead transitions. [2022-11-20 10:52:38,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 684 transitions, 13714 flow [2022-11-20 10:52:38,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 10:52:38,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-20 10:52:38,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1008 transitions. [2022-11-20 10:52:38,414 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4315068493150685 [2022-11-20 10:52:38,415 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1008 transitions. [2022-11-20 10:52:38,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1008 transitions. [2022-11-20 10:52:38,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:52:38,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1008 transitions. [2022-11-20 10:52:38,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 31.5) internal successors, (1008), 32 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:38,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 73.0) internal successors, (2409), 33 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:38,418 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 73.0) internal successors, (2409), 33 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:38,418 INFO L175 Difference]: Start difference. First operand has 596 places, 511 transitions, 9658 flow. Second operand 32 states and 1008 transitions. [2022-11-20 10:52:38,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 684 transitions, 13714 flow [2022-11-20 10:52:38,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 614 places, 684 transitions, 13580 flow, removed 23 selfloop flow, removed 13 redundant places. [2022-11-20 10:52:38,840 INFO L231 Difference]: Finished difference. Result has 620 places, 521 transitions, 9973 flow [2022-11-20 10:52:38,841 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9528, PETRI_DIFFERENCE_MINUEND_PLACES=583, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=9973, PETRI_PLACES=620, PETRI_TRANSITIONS=521} [2022-11-20 10:52:38,841 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 544 predicate places. [2022-11-20 10:52:38,842 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 521 transitions, 9973 flow [2022-11-20 10:52:38,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:38,842 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:52:38,842 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] [2022-11-20 10:52:38,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-20 10:52:38,843 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:52:38,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:38,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1609922464, now seen corresponding path program 7 times [2022-11-20 10:52:38,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:38,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136997638] [2022-11-20 10:52:38,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:38,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:38,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:39,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:52:39,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:39,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136997638] [2022-11-20 10:52:39,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136997638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:39,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:39,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:52:39,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098559314] [2022-11-20 10:52:39,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:39,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:52:39,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:39,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:52:39,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:52:39,588 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:52:39,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 521 transitions, 9973 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:39,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:52:39,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:52:39,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:52:45,085 INFO L130 PetriNetUnfolder]: 730/3097 cut-off events. [2022-11-20 10:52:45,085 INFO L131 PetriNetUnfolder]: For 54356/54360 co-relation queries the response was YES. [2022-11-20 10:52:45,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19903 conditions, 3097 events. 730/3097 cut-off events. For 54356/54360 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 30711 event pairs, 177 based on Foata normal form. 3/3080 useless extension candidates. Maximal degree in co-relation 19637. Up to 1079 conditions per place. [2022-11-20 10:52:45,131 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 489 selfloop transitions, 147 changer transitions 0/661 dead transitions. [2022-11-20 10:52:45,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 657 places, 661 transitions, 13410 flow [2022-11-20 10:52:45,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 10:52:45,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-20 10:52:45,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1170 transitions. [2022-11-20 10:52:45,134 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42177361211247294 [2022-11-20 10:52:45,134 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1170 transitions. [2022-11-20 10:52:45,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1170 transitions. [2022-11-20 10:52:45,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:52:45,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1170 transitions. [2022-11-20 10:52:45,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 30.789473684210527) internal successors, (1170), 38 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:45,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 73.0) internal successors, (2847), 39 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:45,139 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 73.0) internal successors, (2847), 39 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:45,139 INFO L175 Difference]: Start difference. First operand has 620 places, 521 transitions, 9973 flow. Second operand 38 states and 1170 transitions. [2022-11-20 10:52:45,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 657 places, 661 transitions, 13410 flow [2022-11-20 10:52:45,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 633 places, 661 transitions, 13150 flow, removed 27 selfloop flow, removed 24 redundant places. [2022-11-20 10:52:45,617 INFO L231 Difference]: Finished difference. Result has 640 places, 532 transitions, 10313 flow [2022-11-20 10:52:45,617 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9723, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=10313, PETRI_PLACES=640, PETRI_TRANSITIONS=532} [2022-11-20 10:52:45,617 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 564 predicate places. [2022-11-20 10:52:45,618 INFO L495 AbstractCegarLoop]: Abstraction has has 640 places, 532 transitions, 10313 flow [2022-11-20 10:52:45,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:45,618 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:52:45,618 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] [2022-11-20 10:52:45,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-11-20 10:52:45,618 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:52:45,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:45,619 INFO L85 PathProgramCache]: Analyzing trace with hash -2046666050, now seen corresponding path program 8 times [2022-11-20 10:52:45,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:45,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718298221] [2022-11-20 10:52:45,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:45,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:46,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:52:46,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:46,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718298221] [2022-11-20 10:52:46,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718298221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:46,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:46,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:52:46,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427282806] [2022-11-20 10:52:46,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:46,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:52:46,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:46,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:52:46,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:52:46,368 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:52:46,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 640 places, 532 transitions, 10313 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:46,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:52:46,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:52:46,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:52:53,910 INFO L130 PetriNetUnfolder]: 730/3088 cut-off events. [2022-11-20 10:52:53,910 INFO L131 PetriNetUnfolder]: For 55188/55192 co-relation queries the response was YES. [2022-11-20 10:52:53,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20077 conditions, 3088 events. 730/3088 cut-off events. For 55188/55192 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 30583 event pairs, 72 based on Foata normal form. 8/3076 useless extension candidates. Maximal degree in co-relation 19805. Up to 877 conditions per place. [2022-11-20 10:52:53,967 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 501 selfloop transitions, 245 changer transitions 0/771 dead transitions. [2022-11-20 10:52:53,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 771 transitions, 15673 flow [2022-11-20 10:52:53,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-11-20 10:52:53,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-11-20 10:52:53,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 1672 transitions. [2022-11-20 10:52:53,970 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41643835616438357 [2022-11-20 10:52:53,970 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 1672 transitions. [2022-11-20 10:52:53,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 1672 transitions. [2022-11-20 10:52:53,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:52:53,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 1672 transitions. [2022-11-20 10:52:53,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 30.4) internal successors, (1672), 55 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:53,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 73.0) internal successors, (4088), 56 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:53,978 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 73.0) internal successors, (4088), 56 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:53,978 INFO L175 Difference]: Start difference. First operand has 640 places, 532 transitions, 10313 flow. Second operand 55 states and 1672 transitions. [2022-11-20 10:52:53,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 771 transitions, 15673 flow [2022-11-20 10:52:54,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 656 places, 771 transitions, 15203 flow, removed 53 selfloop flow, removed 38 redundant places. [2022-11-20 10:52:54,580 INFO L231 Difference]: Finished difference. Result has 660 places, 571 transitions, 11143 flow [2022-11-20 10:52:54,581 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9940, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=11143, PETRI_PLACES=660, PETRI_TRANSITIONS=571} [2022-11-20 10:52:54,581 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 584 predicate places. [2022-11-20 10:52:54,581 INFO L495 AbstractCegarLoop]: Abstraction has has 660 places, 571 transitions, 11143 flow [2022-11-20 10:52:54,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:54,581 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:52:54,582 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] [2022-11-20 10:52:54,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-20 10:52:54,582 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:52:54,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:54,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1809555833, now seen corresponding path program 1 times [2022-11-20 10:52:54,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:54,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134303415] [2022-11-20 10:52:54,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:54,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:55,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:52:55,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:55,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134303415] [2022-11-20 10:52:55,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134303415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:55,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:55,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:52:55,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654741741] [2022-11-20 10:52:55,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:55,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:52:55,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:55,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:52:55,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:52:55,389 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:52:55,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 660 places, 571 transitions, 11143 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:55,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:52:55,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:52:55,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:53:00,244 INFO L130 PetriNetUnfolder]: 728/3085 cut-off events. [2022-11-20 10:53:00,245 INFO L131 PetriNetUnfolder]: For 56244/56248 co-relation queries the response was YES. [2022-11-20 10:53:00,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20347 conditions, 3085 events. 728/3085 cut-off events. For 56244/56248 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 30577 event pairs, 187 based on Foata normal form. 5/3070 useless extension candidates. Maximal degree in co-relation 20078. Up to 1085 conditions per place. [2022-11-20 10:53:00,298 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 526 selfloop transitions, 149 changer transitions 0/700 dead transitions. [2022-11-20 10:53:00,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 700 transitions, 14394 flow [2022-11-20 10:53:00,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 10:53:00,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 10:53:00,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1094 transitions. [2022-11-20 10:53:00,300 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42818003913894326 [2022-11-20 10:53:00,300 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1094 transitions. [2022-11-20 10:53:00,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1094 transitions. [2022-11-20 10:53:00,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:53:00,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1094 transitions. [2022-11-20 10:53:00,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 31.257142857142856) internal successors, (1094), 35 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:00,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 73.0) internal successors, (2628), 36 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:00,303 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 73.0) internal successors, (2628), 36 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:00,304 INFO L175 Difference]: Start difference. First operand has 660 places, 571 transitions, 11143 flow. Second operand 35 states and 1094 transitions. [2022-11-20 10:53:00,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 700 transitions, 14394 flow [2022-11-20 10:53:00,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 645 places, 700 transitions, 12860 flow, removed 68 selfloop flow, removed 49 redundant places. [2022-11-20 10:53:00,749 INFO L231 Difference]: Finished difference. Result has 653 places, 583 transitions, 10189 flow [2022-11-20 10:53:00,750 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9692, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=10189, PETRI_PLACES=653, PETRI_TRANSITIONS=583} [2022-11-20 10:53:00,750 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 577 predicate places. [2022-11-20 10:53:00,750 INFO L495 AbstractCegarLoop]: Abstraction has has 653 places, 583 transitions, 10189 flow [2022-11-20 10:53:00,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:00,750 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:53:00,750 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] [2022-11-20 10:53:00,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-20 10:53:00,751 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:53:00,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:00,751 INFO L85 PathProgramCache]: Analyzing trace with hash 453672061, now seen corresponding path program 2 times [2022-11-20 10:53:00,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:00,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624605199] [2022-11-20 10:53:00,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:00,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:01,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:53:01,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:01,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624605199] [2022-11-20 10:53:01,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624605199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:53:01,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:53:01,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:53:01,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782730339] [2022-11-20 10:53:01,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:53:01,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:53:01,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:01,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:53:01,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:53:01,552 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:53:01,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 653 places, 583 transitions, 10189 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:01,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:53:01,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:53:01,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:53:07,067 INFO L130 PetriNetUnfolder]: 737/3139 cut-off events. [2022-11-20 10:53:07,067 INFO L131 PetriNetUnfolder]: For 49534/49536 co-relation queries the response was YES. [2022-11-20 10:53:07,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20089 conditions, 3139 events. 737/3139 cut-off events. For 49534/49536 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 31164 event pairs, 189 based on Foata normal form. 5/3123 useless extension candidates. Maximal degree in co-relation 19842. Up to 1102 conditions per place. [2022-11-20 10:53:07,118 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 545 selfloop transitions, 176 changer transitions 0/746 dead transitions. [2022-11-20 10:53:07,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 692 places, 746 transitions, 13914 flow [2022-11-20 10:53:07,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-20 10:53:07,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-20 10:53:07,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 1249 transitions. [2022-11-20 10:53:07,120 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42773972602739724 [2022-11-20 10:53:07,120 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 1249 transitions. [2022-11-20 10:53:07,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 1249 transitions. [2022-11-20 10:53:07,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:53:07,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 1249 transitions. [2022-11-20 10:53:07,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 31.225) internal successors, (1249), 40 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:07,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 73.0) internal successors, (2993), 41 states have internal predecessors, (2993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:07,126 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 73.0) internal successors, (2993), 41 states have internal predecessors, (2993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:07,126 INFO L175 Difference]: Start difference. First operand has 653 places, 583 transitions, 10189 flow. Second operand 40 states and 1249 transitions. [2022-11-20 10:53:07,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 692 places, 746 transitions, 13914 flow [2022-11-20 10:53:07,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 746 transitions, 13594 flow, removed 7 selfloop flow, removed 26 redundant places. [2022-11-20 10:53:07,612 INFO L231 Difference]: Finished difference. Result has 678 places, 614 transitions, 10809 flow [2022-11-20 10:53:07,613 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9907, PETRI_DIFFERENCE_MINUEND_PLACES=627, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=10809, PETRI_PLACES=678, PETRI_TRANSITIONS=614} [2022-11-20 10:53:07,613 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 602 predicate places. [2022-11-20 10:53:07,613 INFO L495 AbstractCegarLoop]: Abstraction has has 678 places, 614 transitions, 10809 flow [2022-11-20 10:53:07,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:07,613 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:53:07,613 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] [2022-11-20 10:53:07,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-20 10:53:07,614 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:53:07,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:07,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1774231985, now seen corresponding path program 3 times [2022-11-20 10:53:07,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:07,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513987469] [2022-11-20 10:53:07,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:07,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:08,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:53:08,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:08,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513987469] [2022-11-20 10:53:08,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513987469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:53:08,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:53:08,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:53:08,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628962468] [2022-11-20 10:53:08,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:53:08,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:53:08,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:08,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:53:08,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:53:08,392 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:53:08,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 678 places, 614 transitions, 10809 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:08,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:53:08,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:53:08,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:53:13,722 INFO L130 PetriNetUnfolder]: 735/3142 cut-off events. [2022-11-20 10:53:13,723 INFO L131 PetriNetUnfolder]: For 54207/54209 co-relation queries the response was YES. [2022-11-20 10:53:13,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20874 conditions, 3142 events. 735/3142 cut-off events. For 54207/54209 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 31213 event pairs, 188 based on Foata normal form. 5/3126 useless extension candidates. Maximal degree in co-relation 20615. Up to 1099 conditions per place. [2022-11-20 10:53:13,777 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 560 selfloop transitions, 172 changer transitions 0/757 dead transitions. [2022-11-20 10:53:13,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 716 places, 757 transitions, 14246 flow [2022-11-20 10:53:13,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 10:53:13,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-20 10:53:13,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1227 transitions. [2022-11-20 10:53:13,779 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4309799789251844 [2022-11-20 10:53:13,779 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 1227 transitions. [2022-11-20 10:53:13,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 1227 transitions. [2022-11-20 10:53:13,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:53:13,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 1227 transitions. [2022-11-20 10:53:13,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 31.46153846153846) internal successors, (1227), 39 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:13,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:13,782 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:13,782 INFO L175 Difference]: Start difference. First operand has 678 places, 614 transitions, 10809 flow. Second operand 39 states and 1227 transitions. [2022-11-20 10:53:13,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 716 places, 757 transitions, 14246 flow [2022-11-20 10:53:14,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 705 places, 757 transitions, 14089 flow, removed 19 selfloop flow, removed 11 redundant places. [2022-11-20 10:53:14,280 INFO L231 Difference]: Finished difference. Result has 717 places, 630 transitions, 11347 flow [2022-11-20 10:53:14,281 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10653, PETRI_DIFFERENCE_MINUEND_PLACES=667, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=11347, PETRI_PLACES=717, PETRI_TRANSITIONS=630} [2022-11-20 10:53:14,282 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 641 predicate places. [2022-11-20 10:53:14,282 INFO L495 AbstractCegarLoop]: Abstraction has has 717 places, 630 transitions, 11347 flow [2022-11-20 10:53:14,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:14,282 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:53:14,282 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] [2022-11-20 10:53:14,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-20 10:53:14,283 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:53:14,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:14,283 INFO L85 PathProgramCache]: Analyzing trace with hash -733061095, now seen corresponding path program 4 times [2022-11-20 10:53:14,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:14,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742520330] [2022-11-20 10:53:14,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:14,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:14,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:15,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:53:15,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:15,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742520330] [2022-11-20 10:53:15,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742520330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:53:15,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:53:15,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:53:15,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665975049] [2022-11-20 10:53:15,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:53:15,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:53:15,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:15,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:53:15,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:53:15,018 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:53:15,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 630 transitions, 11347 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:15,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:53:15,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:53:15,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:53:22,686 INFO L130 PetriNetUnfolder]: 744/3146 cut-off events. [2022-11-20 10:53:22,686 INFO L131 PetriNetUnfolder]: For 61765/61767 co-relation queries the response was YES. [2022-11-20 10:53:22,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22047 conditions, 3146 events. 744/3146 cut-off events. For 61765/61767 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 31014 event pairs, 125 based on Foata normal form. 5/3129 useless extension candidates. Maximal degree in co-relation 21777. Up to 823 conditions per place. [2022-11-20 10:53:22,734 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 574 selfloop transitions, 234 changer transitions 0/833 dead transitions. [2022-11-20 10:53:22,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 780 places, 833 transitions, 15938 flow [2022-11-20 10:53:22,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-20 10:53:22,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2022-11-20 10:53:22,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 1917 transitions. [2022-11-20 10:53:22,737 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4103167808219178 [2022-11-20 10:53:22,738 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 1917 transitions. [2022-11-20 10:53:22,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 1917 transitions. [2022-11-20 10:53:22,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:53:22,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 1917 transitions. [2022-11-20 10:53:22,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 29.953125) internal successors, (1917), 64 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:22,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 73.0) internal successors, (4745), 65 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:22,746 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 73.0) internal successors, (4745), 65 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:22,746 INFO L175 Difference]: Start difference. First operand has 717 places, 630 transitions, 11347 flow. Second operand 64 states and 1917 transitions. [2022-11-20 10:53:22,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 780 places, 833 transitions, 15938 flow [2022-11-20 10:53:23,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 757 places, 833 transitions, 15634 flow, removed 31 selfloop flow, removed 23 redundant places. [2022-11-20 10:53:23,503 INFO L231 Difference]: Finished difference. Result has 772 places, 667 transitions, 12190 flow [2022-11-20 10:53:23,503 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11053, PETRI_DIFFERENCE_MINUEND_PLACES=694, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=12190, PETRI_PLACES=772, PETRI_TRANSITIONS=667} [2022-11-20 10:53:23,504 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 696 predicate places. [2022-11-20 10:53:23,504 INFO L495 AbstractCegarLoop]: Abstraction has has 772 places, 667 transitions, 12190 flow [2022-11-20 10:53:23,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:23,504 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:53:23,504 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] [2022-11-20 10:53:23,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-11-20 10:53:23,505 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:53:23,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:23,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1273542449, now seen corresponding path program 5 times [2022-11-20 10:53:23,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:23,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402191776] [2022-11-20 10:53:23,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:23,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:23,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:24,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:53:24,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:24,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402191776] [2022-11-20 10:53:24,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402191776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:53:24,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:53:24,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:53:24,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161082865] [2022-11-20 10:53:24,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:53:24,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:53:24,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:24,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:53:24,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:53:24,267 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:53:24,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 772 places, 667 transitions, 12190 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:24,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:53:24,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:53:24,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:53:31,739 INFO L130 PetriNetUnfolder]: 742/3174 cut-off events. [2022-11-20 10:53:31,739 INFO L131 PetriNetUnfolder]: For 71633/71635 co-relation queries the response was YES. [2022-11-20 10:53:31,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23321 conditions, 3174 events. 742/3174 cut-off events. For 71633/71635 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 31679 event pairs, 181 based on Foata normal form. 5/3157 useless extension candidates. Maximal degree in co-relation 23036. Up to 1035 conditions per place. [2022-11-20 10:53:31,800 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 545 selfloop transitions, 237 changer transitions 0/807 dead transitions. [2022-11-20 10:53:31,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 827 places, 807 transitions, 15857 flow [2022-11-20 10:53:31,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-20 10:53:31,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-11-20 10:53:31,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 1691 transitions. [2022-11-20 10:53:31,803 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41364970645792565 [2022-11-20 10:53:31,803 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 1691 transitions. [2022-11-20 10:53:31,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 1691 transitions. [2022-11-20 10:53:31,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:53:31,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 1691 transitions. [2022-11-20 10:53:31,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 30.196428571428573) internal successors, (1691), 56 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:31,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 73.0) internal successors, (4161), 57 states have internal predecessors, (4161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:31,809 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 73.0) internal successors, (4161), 57 states have internal predecessors, (4161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:31,809 INFO L175 Difference]: Start difference. First operand has 772 places, 667 transitions, 12190 flow. Second operand 56 states and 1691 transitions. [2022-11-20 10:53:31,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 827 places, 807 transitions, 15857 flow [2022-11-20 10:53:32,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 792 places, 807 transitions, 15457 flow, removed 62 selfloop flow, removed 35 redundant places. [2022-11-20 10:53:32,830 INFO L231 Difference]: Finished difference. Result has 800 places, 682 transitions, 12736 flow [2022-11-20 10:53:32,831 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11792, PETRI_DIFFERENCE_MINUEND_PLACES=737, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=12736, PETRI_PLACES=800, PETRI_TRANSITIONS=682} [2022-11-20 10:53:32,832 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 724 predicate places. [2022-11-20 10:53:32,832 INFO L495 AbstractCegarLoop]: Abstraction has has 800 places, 682 transitions, 12736 flow [2022-11-20 10:53:32,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:32,832 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:53:32,832 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] [2022-11-20 10:53:32,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-11-20 10:53:32,832 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:53:32,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:32,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1872077933, now seen corresponding path program 6 times [2022-11-20 10:53:32,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:32,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925762384] [2022-11-20 10:53:32,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:32,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:33,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:53:33,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:33,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925762384] [2022-11-20 10:53:33,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925762384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:53:33,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:53:33,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:53:33,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424285546] [2022-11-20 10:53:33,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:53:33,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:53:33,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:33,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:53:33,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:53:33,599 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:53:33,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 800 places, 682 transitions, 12736 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:33,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:53:33,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:53:33,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:53:38,079 INFO L130 PetriNetUnfolder]: 751/3206 cut-off events. [2022-11-20 10:53:38,079 INFO L131 PetriNetUnfolder]: For 78958/78960 co-relation queries the response was YES. [2022-11-20 10:53:38,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24257 conditions, 3206 events. 751/3206 cut-off events. For 78958/78960 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 31910 event pairs, 106 based on Foata normal form. 5/3188 useless extension candidates. Maximal degree in co-relation 23968. Up to 927 conditions per place. [2022-11-20 10:53:38,148 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 654 selfloop transitions, 197 changer transitions 0/876 dead transitions. [2022-11-20 10:53:38,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 835 places, 876 transitions, 17652 flow [2022-11-20 10:53:38,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 10:53:38,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-20 10:53:38,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1119 transitions. [2022-11-20 10:53:38,151 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4257990867579909 [2022-11-20 10:53:38,151 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1119 transitions. [2022-11-20 10:53:38,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1119 transitions. [2022-11-20 10:53:38,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:53:38,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1119 transitions. [2022-11-20 10:53:38,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 31.083333333333332) internal successors, (1119), 36 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:38,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 73.0) internal successors, (2701), 37 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:38,154 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 73.0) internal successors, (2701), 37 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:38,154 INFO L175 Difference]: Start difference. First operand has 800 places, 682 transitions, 12736 flow. Second operand 36 states and 1119 transitions. [2022-11-20 10:53:38,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 835 places, 876 transitions, 17652 flow [2022-11-20 10:53:39,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 789 places, 876 transitions, 17190 flow, removed 57 selfloop flow, removed 46 redundant places. [2022-11-20 10:53:39,039 INFO L231 Difference]: Finished difference. Result has 808 places, 719 transitions, 13678 flow [2022-11-20 10:53:39,039 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12328, PETRI_DIFFERENCE_MINUEND_PLACES=754, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=13678, PETRI_PLACES=808, PETRI_TRANSITIONS=719} [2022-11-20 10:53:39,039 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 732 predicate places. [2022-11-20 10:53:39,040 INFO L495 AbstractCegarLoop]: Abstraction has has 808 places, 719 transitions, 13678 flow [2022-11-20 10:53:39,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:39,040 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:53:39,040 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] [2022-11-20 10:53:39,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-11-20 10:53:39,040 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:53:39,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:39,041 INFO L85 PathProgramCache]: Analyzing trace with hash 71690769, now seen corresponding path program 7 times [2022-11-20 10:53:39,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:39,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680140233] [2022-11-20 10:53:39,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:39,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:39,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:53:39,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:39,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680140233] [2022-11-20 10:53:39,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680140233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:53:39,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:53:39,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:53:39,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145732508] [2022-11-20 10:53:39,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:53:39,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:53:39,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:39,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:53:39,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:53:39,751 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:53:39,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 808 places, 719 transitions, 13678 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:39,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:53:39,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:53:39,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:53:45,167 INFO L130 PetriNetUnfolder]: 765/3299 cut-off events. [2022-11-20 10:53:45,167 INFO L131 PetriNetUnfolder]: For 90315/90317 co-relation queries the response was YES. [2022-11-20 10:53:45,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25894 conditions, 3299 events. 765/3299 cut-off events. For 90315/90317 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 33069 event pairs, 104 based on Foata normal form. 5/3280 useless extension candidates. Maximal degree in co-relation 25594. Up to 926 conditions per place. [2022-11-20 10:53:45,280 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 661 selfloop transitions, 226 changer transitions 0/912 dead transitions. [2022-11-20 10:53:45,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 846 places, 912 transitions, 18675 flow [2022-11-20 10:53:45,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 10:53:45,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-20 10:53:45,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1208 transitions. [2022-11-20 10:53:45,283 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42430628731998593 [2022-11-20 10:53:45,283 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 1208 transitions. [2022-11-20 10:53:45,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 1208 transitions. [2022-11-20 10:53:45,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:53:45,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 1208 transitions. [2022-11-20 10:53:45,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 30.974358974358974) internal successors, (1208), 39 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:45,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:45,286 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:45,286 INFO L175 Difference]: Start difference. First operand has 808 places, 719 transitions, 13678 flow. Second operand 39 states and 1208 transitions. [2022-11-20 10:53:45,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 846 places, 912 transitions, 18675 flow [2022-11-20 10:53:46,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 836 places, 912 transitions, 18407 flow, removed 81 selfloop flow, removed 10 redundant places. [2022-11-20 10:53:46,713 INFO L231 Difference]: Finished difference. Result has 852 places, 751 transitions, 14891 flow [2022-11-20 10:53:46,714 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13450, PETRI_DIFFERENCE_MINUEND_PLACES=798, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=719, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=14891, PETRI_PLACES=852, PETRI_TRANSITIONS=751} [2022-11-20 10:53:46,714 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 776 predicate places. [2022-11-20 10:53:46,714 INFO L495 AbstractCegarLoop]: Abstraction has has 852 places, 751 transitions, 14891 flow [2022-11-20 10:53:46,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:46,715 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:53:46,715 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] [2022-11-20 10:53:46,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-11-20 10:53:46,715 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:53:46,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:46,715 INFO L85 PathProgramCache]: Analyzing trace with hash -900938735, now seen corresponding path program 8 times [2022-11-20 10:53:46,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:46,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159119377] [2022-11-20 10:53:46,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:46,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:47,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:53:47,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:47,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159119377] [2022-11-20 10:53:47,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159119377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:53:47,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:53:47,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:53:47,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953308349] [2022-11-20 10:53:47,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:53:47,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:53:47,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:47,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:53:47,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:53:47,493 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:53:47,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 852 places, 751 transitions, 14891 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:47,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:53:47,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:53:47,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:53:53,442 INFO L130 PetriNetUnfolder]: 775/3344 cut-off events. [2022-11-20 10:53:53,442 INFO L131 PetriNetUnfolder]: For 102605/102607 co-relation queries the response was YES. [2022-11-20 10:53:53,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27575 conditions, 3344 events. 775/3344 cut-off events. For 102605/102607 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 33681 event pairs, 104 based on Foata normal form. 5/3324 useless extension candidates. Maximal degree in co-relation 27257. Up to 923 conditions per place. [2022-11-20 10:53:53,541 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 661 selfloop transitions, 249 changer transitions 0/935 dead transitions. [2022-11-20 10:53:53,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 893 places, 935 transitions, 19810 flow [2022-11-20 10:53:53,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-20 10:53:53,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-11-20 10:53:53,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 1287 transitions. [2022-11-20 10:53:53,544 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4197651663405088 [2022-11-20 10:53:53,545 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 1287 transitions. [2022-11-20 10:53:53,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 1287 transitions. [2022-11-20 10:53:53,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:53:53,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 1287 transitions. [2022-11-20 10:53:53,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 30.642857142857142) internal successors, (1287), 42 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:53,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 73.0) internal successors, (3139), 43 states have internal predecessors, (3139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:53,551 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 73.0) internal successors, (3139), 43 states have internal predecessors, (3139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:53,552 INFO L175 Difference]: Start difference. First operand has 852 places, 751 transitions, 14891 flow. Second operand 42 states and 1287 transitions. [2022-11-20 10:53:53,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 893 places, 935 transitions, 19810 flow [2022-11-20 10:53:55,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 876 places, 935 transitions, 19524 flow, removed 72 selfloop flow, removed 17 redundant places. [2022-11-20 10:53:55,026 INFO L231 Difference]: Finished difference. Result has 890 places, 777 transitions, 16020 flow [2022-11-20 10:53:55,027 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=14627, PETRI_DIFFERENCE_MINUEND_PLACES=835, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=16020, PETRI_PLACES=890, PETRI_TRANSITIONS=777} [2022-11-20 10:53:55,028 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 814 predicate places. [2022-11-20 10:53:55,028 INFO L495 AbstractCegarLoop]: Abstraction has has 890 places, 777 transitions, 16020 flow [2022-11-20 10:53:55,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:55,029 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:53:55,029 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] [2022-11-20 10:53:55,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-11-20 10:53:55,029 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:53:55,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:55,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1931636571, now seen corresponding path program 9 times [2022-11-20 10:53:55,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:55,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633269612] [2022-11-20 10:53:55,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:55,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:55,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:53:55,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:55,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633269612] [2022-11-20 10:53:55,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633269612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:53:55,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:53:55,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:53:55,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906811494] [2022-11-20 10:53:55,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:53:55,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:53:55,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:55,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:53:55,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:53:55,857 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:53:55,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 890 places, 777 transitions, 16020 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:55,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:53:55,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:53:55,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:02,235 INFO L130 PetriNetUnfolder]: 787/3392 cut-off events. [2022-11-20 10:54:02,235 INFO L131 PetriNetUnfolder]: For 118679/118681 co-relation queries the response was YES. [2022-11-20 10:54:02,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29278 conditions, 3392 events. 787/3392 cut-off events. For 118679/118681 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 34307 event pairs, 104 based on Foata normal form. 5/3371 useless extension candidates. Maximal degree in co-relation 28947. Up to 916 conditions per place. [2022-11-20 10:54:02,313 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 663 selfloop transitions, 272 changer transitions 0/960 dead transitions. [2022-11-20 10:54:02,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 932 places, 960 transitions, 21118 flow [2022-11-20 10:54:02,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-20 10:54:02,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-11-20 10:54:02,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 1317 transitions. [2022-11-20 10:54:02,316 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4195603695444409 [2022-11-20 10:54:02,316 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 1317 transitions. [2022-11-20 10:54:02,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 1317 transitions. [2022-11-20 10:54:02,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:02,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 1317 transitions. [2022-11-20 10:54:02,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 30.627906976744185) internal successors, (1317), 43 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:02,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 73.0) internal successors, (3212), 44 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:02,320 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 73.0) internal successors, (3212), 44 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:02,321 INFO L175 Difference]: Start difference. First operand has 890 places, 777 transitions, 16020 flow. Second operand 43 states and 1317 transitions. [2022-11-20 10:54:02,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 932 places, 960 transitions, 21118 flow [2022-11-20 10:54:03,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 911 places, 960 transitions, 20668 flow, removed 91 selfloop flow, removed 21 redundant places. [2022-11-20 10:54:03,870 INFO L231 Difference]: Finished difference. Result has 926 places, 802 transitions, 17197 flow [2022-11-20 10:54:03,870 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=15610, PETRI_DIFFERENCE_MINUEND_PLACES=869, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=777, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=17197, PETRI_PLACES=926, PETRI_TRANSITIONS=802} [2022-11-20 10:54:03,871 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 850 predicate places. [2022-11-20 10:54:03,871 INFO L495 AbstractCegarLoop]: Abstraction has has 926 places, 802 transitions, 17197 flow [2022-11-20 10:54:03,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:03,871 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:03,871 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] [2022-11-20 10:54:03,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-11-20 10:54:03,872 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:54:03,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:03,872 INFO L85 PathProgramCache]: Analyzing trace with hash -839170485, now seen corresponding path program 10 times [2022-11-20 10:54:03,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:03,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863247389] [2022-11-20 10:54:03,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:03,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:04,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:04,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:04,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863247389] [2022-11-20 10:54:04,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863247389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:04,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:04,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:54:04,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424380823] [2022-11-20 10:54:04,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:04,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:54:04,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:04,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:54:04,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:54:04,730 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:54:04,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 926 places, 802 transitions, 17197 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:04,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:04,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:54:04,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:10,704 INFO L130 PetriNetUnfolder]: 801/3471 cut-off events. [2022-11-20 10:54:10,705 INFO L131 PetriNetUnfolder]: For 133335/133337 co-relation queries the response was YES. [2022-11-20 10:54:10,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30849 conditions, 3471 events. 801/3471 cut-off events. For 133335/133337 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 35320 event pairs, 108 based on Foata normal form. 5/3449 useless extension candidates. Maximal degree in co-relation 30506. Up to 912 conditions per place. [2022-11-20 10:54:10,818 INFO L137 encePairwiseOnDemand]: 47/73 looper letters, 679 selfloop transitions, 293 changer transitions 0/997 dead transitions. [2022-11-20 10:54:10,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 964 places, 997 transitions, 22652 flow [2022-11-20 10:54:10,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 10:54:10,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-20 10:54:10,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1199 transitions. [2022-11-20 10:54:10,821 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42114506498068144 [2022-11-20 10:54:10,821 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 1199 transitions. [2022-11-20 10:54:10,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 1199 transitions. [2022-11-20 10:54:10,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:10,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 1199 transitions. [2022-11-20 10:54:10,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 30.743589743589745) internal successors, (1199), 39 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:10,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:10,825 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:10,825 INFO L175 Difference]: Start difference. First operand has 926 places, 802 transitions, 17197 flow. Second operand 39 states and 1199 transitions. [2022-11-20 10:54:10,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 964 places, 997 transitions, 22652 flow [2022-11-20 10:54:12,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 937 places, 997 transitions, 22199 flow, removed 86 selfloop flow, removed 27 redundant places. [2022-11-20 10:54:12,512 INFO L231 Difference]: Finished difference. Result has 952 places, 836 transitions, 18569 flow [2022-11-20 10:54:12,512 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=16788, PETRI_DIFFERENCE_MINUEND_PLACES=899, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=802, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=18569, PETRI_PLACES=952, PETRI_TRANSITIONS=836} [2022-11-20 10:54:12,513 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 876 predicate places. [2022-11-20 10:54:12,513 INFO L495 AbstractCegarLoop]: Abstraction has has 952 places, 836 transitions, 18569 flow [2022-11-20 10:54:12,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:12,513 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:12,514 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] [2022-11-20 10:54:12,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-11-20 10:54:12,514 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:54:12,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:12,514 INFO L85 PathProgramCache]: Analyzing trace with hash -672298257, now seen corresponding path program 11 times [2022-11-20 10:54:12,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:12,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796083596] [2022-11-20 10:54:12,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:12,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:13,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:13,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:13,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796083596] [2022-11-20 10:54:13,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796083596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:13,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:13,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:54:13,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771355698] [2022-11-20 10:54:13,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:13,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:54:13,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:13,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:54:13,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:54:13,318 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:54:13,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 952 places, 836 transitions, 18569 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:13,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:13,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:54:13,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:19,954 INFO L130 PetriNetUnfolder]: 815/3558 cut-off events. [2022-11-20 10:54:19,954 INFO L131 PetriNetUnfolder]: For 160150/160152 co-relation queries the response was YES. [2022-11-20 10:54:20,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32649 conditions, 3558 events. 815/3558 cut-off events. For 160150/160152 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 36622 event pairs, 169 based on Foata normal form. 5/3535 useless extension candidates. Maximal degree in co-relation 32294. Up to 1139 conditions per place. [2022-11-20 10:54:20,023 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 653 selfloop transitions, 317 changer transitions 0/995 dead transitions. [2022-11-20 10:54:20,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 994 places, 995 transitions, 23422 flow [2022-11-20 10:54:20,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-20 10:54:20,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-11-20 10:54:20,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 1310 transitions. [2022-11-20 10:54:20,026 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4173303599872571 [2022-11-20 10:54:20,026 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 1310 transitions. [2022-11-20 10:54:20,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 1310 transitions. [2022-11-20 10:54:20,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:20,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 1310 transitions. [2022-11-20 10:54:20,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 30.46511627906977) internal successors, (1310), 43 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:20,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 73.0) internal successors, (3212), 44 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:20,029 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 73.0) internal successors, (3212), 44 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:20,029 INFO L175 Difference]: Start difference. First operand has 952 places, 836 transitions, 18569 flow. Second operand 43 states and 1310 transitions. [2022-11-20 10:54:20,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 994 places, 995 transitions, 23422 flow [2022-11-20 10:54:22,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 982 places, 995 transitions, 23026 flow, removed 109 selfloop flow, removed 12 redundant places. [2022-11-20 10:54:22,039 INFO L231 Difference]: Finished difference. Result has 994 places, 867 transitions, 19982 flow [2022-11-20 10:54:22,040 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=18229, PETRI_DIFFERENCE_MINUEND_PLACES=940, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=836, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=287, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=19982, PETRI_PLACES=994, PETRI_TRANSITIONS=867} [2022-11-20 10:54:22,041 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 918 predicate places. [2022-11-20 10:54:22,041 INFO L495 AbstractCegarLoop]: Abstraction has has 994 places, 867 transitions, 19982 flow [2022-11-20 10:54:22,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:22,041 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:22,042 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] [2022-11-20 10:54:22,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-11-20 10:54:22,042 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:54:22,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:22,042 INFO L85 PathProgramCache]: Analyzing trace with hash -477116039, now seen corresponding path program 12 times [2022-11-20 10:54:22,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:22,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940127138] [2022-11-20 10:54:22,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:22,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:22,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:22,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:22,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940127138] [2022-11-20 10:54:22,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940127138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:22,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:22,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:54:22,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132893503] [2022-11-20 10:54:22,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:22,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:54:22,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:22,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:54:22,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:54:22,645 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:54:22,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 994 places, 867 transitions, 19982 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:22,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:22,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:54:22,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:31,582 INFO L130 PetriNetUnfolder]: 801/3433 cut-off events. [2022-11-20 10:54:31,582 INFO L131 PetriNetUnfolder]: For 160433/160435 co-relation queries the response was YES. [2022-11-20 10:54:31,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32807 conditions, 3433 events. 801/3433 cut-off events. For 160433/160435 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 34878 event pairs, 23 based on Foata normal form. 23/3429 useless extension candidates. Maximal degree in co-relation 32440. Up to 568 conditions per place. [2022-11-20 10:54:31,682 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 557 selfloop transitions, 558 changer transitions 0/1140 dead transitions. [2022-11-20 10:54:31,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1055 places, 1140 transitions, 27217 flow [2022-11-20 10:54:31,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-20 10:54:31,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2022-11-20 10:54:31,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 1861 transitions. [2022-11-20 10:54:31,685 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4111798497569598 [2022-11-20 10:54:31,685 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 1861 transitions. [2022-11-20 10:54:31,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 1861 transitions. [2022-11-20 10:54:31,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:31,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 1861 transitions. [2022-11-20 10:54:31,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 30.016129032258064) internal successors, (1861), 62 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:31,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 73.0) internal successors, (4599), 63 states have internal predecessors, (4599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:31,692 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 73.0) internal successors, (4599), 63 states have internal predecessors, (4599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:31,692 INFO L175 Difference]: Start difference. First operand has 994 places, 867 transitions, 19982 flow. Second operand 62 states and 1861 transitions. [2022-11-20 10:54:31,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1055 places, 1140 transitions, 27217 flow [2022-11-20 10:54:34,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1033 places, 1140 transitions, 26702 flow, removed 104 selfloop flow, removed 22 redundant places. [2022-11-20 10:54:34,173 INFO L231 Difference]: Finished difference. Result has 1045 places, 942 transitions, 22950 flow [2022-11-20 10:54:34,174 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=19557, PETRI_DIFFERENCE_MINUEND_PLACES=972, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=867, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=483, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=22950, PETRI_PLACES=1045, PETRI_TRANSITIONS=942} [2022-11-20 10:54:34,174 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 969 predicate places. [2022-11-20 10:54:34,175 INFO L495 AbstractCegarLoop]: Abstraction has has 1045 places, 942 transitions, 22950 flow [2022-11-20 10:54:34,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:34,175 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:34,175 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] [2022-11-20 10:54:34,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-11-20 10:54:34,175 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:54:34,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:34,176 INFO L85 PathProgramCache]: Analyzing trace with hash 221570866, now seen corresponding path program 9 times [2022-11-20 10:54:34,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:34,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326083014] [2022-11-20 10:54:34,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:34,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:35,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:35,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:35,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326083014] [2022-11-20 10:54:35,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326083014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:35,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:35,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:54:35,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558786137] [2022-11-20 10:54:35,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:35,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:54:35,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:35,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:54:35,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:54:35,047 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:54:35,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1045 places, 942 transitions, 22950 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:35,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:35,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:54:35,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:40,915 INFO L130 PetriNetUnfolder]: 828/3544 cut-off events. [2022-11-20 10:54:40,915 INFO L131 PetriNetUnfolder]: For 188444/188448 co-relation queries the response was YES. [2022-11-20 10:54:40,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35171 conditions, 3544 events. 828/3544 cut-off events. For 188444/188448 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 36366 event pairs, 131 based on Foata normal form. 3/3520 useless extension candidates. Maximal degree in co-relation 34799. Up to 1358 conditions per place. [2022-11-20 10:54:41,009 INFO L137 encePairwiseOnDemand]: 48/73 looper letters, 834 selfloop transitions, 240 changer transitions 0/1099 dead transitions. [2022-11-20 10:54:41,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1074 places, 1099 transitions, 27747 flow [2022-11-20 10:54:41,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 10:54:41,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 10:54:41,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 938 transitions. [2022-11-20 10:54:41,011 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.428310502283105 [2022-11-20 10:54:41,011 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 938 transitions. [2022-11-20 10:54:41,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 938 transitions. [2022-11-20 10:54:41,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:41,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 938 transitions. [2022-11-20 10:54:41,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 31.266666666666666) internal successors, (938), 30 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:41,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 73.0) internal successors, (2263), 31 states have internal predecessors, (2263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:41,015 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 73.0) internal successors, (2263), 31 states have internal predecessors, (2263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:41,015 INFO L175 Difference]: Start difference. First operand has 1045 places, 942 transitions, 22950 flow. Second operand 30 states and 938 transitions. [2022-11-20 10:54:41,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1074 places, 1099 transitions, 27747 flow [2022-11-20 10:54:44,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1043 places, 1099 transitions, 26449 flow, removed 138 selfloop flow, removed 31 redundant places. [2022-11-20 10:54:44,071 INFO L231 Difference]: Finished difference. Result has 1053 places, 979 transitions, 23303 flow [2022-11-20 10:54:44,072 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=21824, PETRI_DIFFERENCE_MINUEND_PLACES=1014, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=721, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=23303, PETRI_PLACES=1053, PETRI_TRANSITIONS=979} [2022-11-20 10:54:44,072 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 977 predicate places. [2022-11-20 10:54:44,072 INFO L495 AbstractCegarLoop]: Abstraction has has 1053 places, 979 transitions, 23303 flow [2022-11-20 10:54:44,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:44,073 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:44,073 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] [2022-11-20 10:54:44,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-11-20 10:54:44,073 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:54:44,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:44,074 INFO L85 PathProgramCache]: Analyzing trace with hash -399715382, now seen corresponding path program 10 times [2022-11-20 10:54:44,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:44,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135430000] [2022-11-20 10:54:44,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:44,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:45,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:45,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:45,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135430000] [2022-11-20 10:54:45,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135430000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:45,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:45,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:54:45,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10662083] [2022-11-20 10:54:45,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:45,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:54:45,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:45,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:54:45,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:54:45,067 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:54:45,067 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1053 places, 979 transitions, 23303 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:45,067 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:45,067 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:54:45,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:51,230 INFO L130 PetriNetUnfolder]: 832/3543 cut-off events. [2022-11-20 10:54:51,230 INFO L131 PetriNetUnfolder]: For 177205/177209 co-relation queries the response was YES. [2022-11-20 10:54:51,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34986 conditions, 3543 events. 832/3543 cut-off events. For 177205/177209 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 36149 event pairs, 104 based on Foata normal form. 3/3519 useless extension candidates. Maximal degree in co-relation 34617. Up to 1016 conditions per place. [2022-11-20 10:54:51,320 INFO L137 encePairwiseOnDemand]: 47/73 looper letters, 874 selfloop transitions, 245 changer transitions 0/1144 dead transitions. [2022-11-20 10:54:51,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1083 places, 1144 transitions, 28069 flow [2022-11-20 10:54:51,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 10:54:51,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-20 10:54:51,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 976 transitions. [2022-11-20 10:54:51,323 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43128590366769776 [2022-11-20 10:54:51,323 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 976 transitions. [2022-11-20 10:54:51,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 976 transitions. [2022-11-20 10:54:51,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:51,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 976 transitions. [2022-11-20 10:54:51,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 31.483870967741936) internal successors, (976), 31 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:51,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 73.0) internal successors, (2336), 32 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:51,327 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 73.0) internal successors, (2336), 32 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:51,327 INFO L175 Difference]: Start difference. First operand has 1053 places, 979 transitions, 23303 flow. Second operand 31 states and 976 transitions. [2022-11-20 10:54:51,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1083 places, 1144 transitions, 28069 flow [2022-11-20 10:54:54,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1073 places, 1144 transitions, 27797 flow, removed 43 selfloop flow, removed 10 redundant places. [2022-11-20 10:54:54,394 INFO L231 Difference]: Finished difference. Result has 1081 places, 1000 transitions, 24051 flow [2022-11-20 10:54:54,395 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=23047, PETRI_DIFFERENCE_MINUEND_PLACES=1043, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=979, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=744, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=24051, PETRI_PLACES=1081, PETRI_TRANSITIONS=1000} [2022-11-20 10:54:54,395 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1005 predicate places. [2022-11-20 10:54:54,396 INFO L495 AbstractCegarLoop]: Abstraction has has 1081 places, 1000 transitions, 24051 flow [2022-11-20 10:54:54,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:54,396 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:54,396 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] [2022-11-20 10:54:54,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-11-20 10:54:54,397 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:54:54,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:54,397 INFO L85 PathProgramCache]: Analyzing trace with hash 118263444, now seen corresponding path program 11 times [2022-11-20 10:54:54,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:54,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302606775] [2022-11-20 10:54:54,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:54,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:54,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:55,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:55,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:55,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302606775] [2022-11-20 10:54:55,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302606775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:55,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:55,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:54:55,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419963939] [2022-11-20 10:54:55,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:55,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:54:55,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:55,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:54:55,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:54:55,230 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:54:55,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1081 places, 1000 transitions, 24051 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:55,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:55,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:54:55,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:02,931 INFO L130 PetriNetUnfolder]: 837/3574 cut-off events. [2022-11-20 10:55:02,931 INFO L131 PetriNetUnfolder]: For 186342/186346 co-relation queries the response was YES. [2022-11-20 10:55:03,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35777 conditions, 3574 events. 837/3574 cut-off events. For 186342/186346 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 36628 event pairs, 75 based on Foata normal form. 3/3550 useless extension candidates. Maximal degree in co-relation 35396. Up to 990 conditions per place. [2022-11-20 10:55:03,019 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 819 selfloop transitions, 332 changer transitions 0/1176 dead transitions. [2022-11-20 10:55:03,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1119 places, 1176 transitions, 28932 flow [2022-11-20 10:55:03,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 10:55:03,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-20 10:55:03,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1199 transitions. [2022-11-20 10:55:03,022 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42114506498068144 [2022-11-20 10:55:03,022 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 1199 transitions. [2022-11-20 10:55:03,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 1199 transitions. [2022-11-20 10:55:03,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:03,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 1199 transitions. [2022-11-20 10:55:03,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 30.743589743589745) internal successors, (1199), 39 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:03,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:03,027 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:03,028 INFO L175 Difference]: Start difference. First operand has 1081 places, 1000 transitions, 24051 flow. Second operand 39 states and 1199 transitions. [2022-11-20 10:55:03,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1119 places, 1176 transitions, 28932 flow [2022-11-20 10:55:05,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1105 places, 1176 transitions, 28420 flow, removed 43 selfloop flow, removed 14 redundant places. [2022-11-20 10:55:06,026 INFO L231 Difference]: Finished difference. Result has 1116 places, 1031 transitions, 24874 flow [2022-11-20 10:55:06,027 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=23539, PETRI_DIFFERENCE_MINUEND_PLACES=1067, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1000, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=303, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=685, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=24874, PETRI_PLACES=1116, PETRI_TRANSITIONS=1031} [2022-11-20 10:55:06,028 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1040 predicate places. [2022-11-20 10:55:06,028 INFO L495 AbstractCegarLoop]: Abstraction has has 1116 places, 1031 transitions, 24874 flow [2022-11-20 10:55:06,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:06,028 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:06,029 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] [2022-11-20 10:55:06,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-11-20 10:55:06,030 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:55:06,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:06,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1274672912, now seen corresponding path program 12 times [2022-11-20 10:55:06,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:06,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129944824] [2022-11-20 10:55:06,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:06,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:06,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:06,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:06,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129944824] [2022-11-20 10:55:06,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129944824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:06,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:06,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:55:06,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971586125] [2022-11-20 10:55:06,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:06,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:55:06,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:06,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:55:06,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:55:06,819 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:55:06,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1116 places, 1031 transitions, 24874 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:06,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:06,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:55:06,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:15,198 INFO L130 PetriNetUnfolder]: 839/3624 cut-off events. [2022-11-20 10:55:15,198 INFO L131 PetriNetUnfolder]: For 206430/206434 co-relation queries the response was YES. [2022-11-20 10:55:15,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36400 conditions, 3624 events. 839/3624 cut-off events. For 206430/206434 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 37414 event pairs, 149 based on Foata normal form. 3/3600 useless extension candidates. Maximal degree in co-relation 36007. Up to 1398 conditions per place. [2022-11-20 10:55:15,320 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 906 selfloop transitions, 238 changer transitions 0/1169 dead transitions. [2022-11-20 10:55:15,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1153 places, 1169 transitions, 29212 flow [2022-11-20 10:55:15,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 10:55:15,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-20 10:55:15,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1168 transitions. [2022-11-20 10:55:15,323 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2022-11-20 10:55:15,323 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1168 transitions. [2022-11-20 10:55:15,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1168 transitions. [2022-11-20 10:55:15,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:15,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1168 transitions. [2022-11-20 10:55:15,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 30.736842105263158) internal successors, (1168), 38 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:15,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 73.0) internal successors, (2847), 39 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:15,329 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 73.0) internal successors, (2847), 39 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:15,329 INFO L175 Difference]: Start difference. First operand has 1116 places, 1031 transitions, 24874 flow. Second operand 38 states and 1168 transitions. [2022-11-20 10:55:15,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1153 places, 1169 transitions, 29212 flow [2022-11-20 10:55:17,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1137 places, 1169 transitions, 28723 flow, removed 37 selfloop flow, removed 16 redundant places. [2022-11-20 10:55:17,823 INFO L231 Difference]: Finished difference. Result has 1148 places, 1061 transitions, 25596 flow [2022-11-20 10:55:17,823 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=24392, PETRI_DIFFERENCE_MINUEND_PLACES=1100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1031, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=812, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=25596, PETRI_PLACES=1148, PETRI_TRANSITIONS=1061} [2022-11-20 10:55:17,824 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1072 predicate places. [2022-11-20 10:55:17,824 INFO L495 AbstractCegarLoop]: Abstraction has has 1148 places, 1061 transitions, 25596 flow [2022-11-20 10:55:17,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:17,824 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:17,824 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] [2022-11-20 10:55:17,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-11-20 10:55:17,825 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:55:17,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:17,825 INFO L85 PathProgramCache]: Analyzing trace with hash -830193998, now seen corresponding path program 13 times [2022-11-20 10:55:17,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:17,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540765345] [2022-11-20 10:55:17,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:17,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:18,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:18,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:18,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540765345] [2022-11-20 10:55:18,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540765345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:18,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:18,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:55:18,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864820546] [2022-11-20 10:55:18,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:18,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:55:18,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:18,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:55:18,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:55:18,669 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:55:18,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1148 places, 1061 transitions, 25596 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:18,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:18,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:55:18,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:30,032 INFO L130 PetriNetUnfolder]: 841/3617 cut-off events. [2022-11-20 10:55:30,033 INFO L131 PetriNetUnfolder]: For 200997/201001 co-relation queries the response was YES. [2022-11-20 10:55:30,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36679 conditions, 3617 events. 841/3617 cut-off events. For 200997/201001 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 37236 event pairs, 2 based on Foata normal form. 3/3593 useless extension candidates. Maximal degree in co-relation 36280. Up to 823 conditions per place. [2022-11-20 10:55:30,137 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 733 selfloop transitions, 520 changer transitions 0/1278 dead transitions. [2022-11-20 10:55:30,137 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1205 places, 1278 transitions, 31377 flow [2022-11-20 10:55:30,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-11-20 10:55:30,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-11-20 10:55:30,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 1736 transitions. [2022-11-20 10:55:30,140 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41001417099669346 [2022-11-20 10:55:30,140 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 1736 transitions. [2022-11-20 10:55:30,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 1736 transitions. [2022-11-20 10:55:30,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:30,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 1736 transitions. [2022-11-20 10:55:30,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 29.93103448275862) internal successors, (1736), 58 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:30,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 73.0) internal successors, (4307), 59 states have internal predecessors, (4307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:30,148 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 73.0) internal successors, (4307), 59 states have internal predecessors, (4307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:30,149 INFO L175 Difference]: Start difference. First operand has 1148 places, 1061 transitions, 25596 flow. Second operand 58 states and 1736 transitions. [2022-11-20 10:55:30,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1205 places, 1278 transitions, 31377 flow [2022-11-20 10:55:33,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1191 places, 1278 transitions, 31083 flow, removed 29 selfloop flow, removed 14 redundant places. [2022-11-20 10:55:33,261 INFO L231 Difference]: Finished difference. Result has 1197 places, 1094 transitions, 27152 flow [2022-11-20 10:55:33,262 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=25322, PETRI_DIFFERENCE_MINUEND_PLACES=1134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1061, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=487, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=27152, PETRI_PLACES=1197, PETRI_TRANSITIONS=1094} [2022-11-20 10:55:33,263 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1121 predicate places. [2022-11-20 10:55:33,263 INFO L495 AbstractCegarLoop]: Abstraction has has 1197 places, 1094 transitions, 27152 flow [2022-11-20 10:55:33,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:33,263 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:33,263 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] [2022-11-20 10:55:33,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-11-20 10:55:33,264 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:55:33,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:33,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1451480246, now seen corresponding path program 14 times [2022-11-20 10:55:33,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:33,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613774893] [2022-11-20 10:55:33,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:33,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:34,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:34,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:34,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613774893] [2022-11-20 10:55:34,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613774893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:34,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:34,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:55:34,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818532181] [2022-11-20 10:55:34,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:34,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:55:34,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:34,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:55:34,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:55:34,014 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:55:34,014 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1197 places, 1094 transitions, 27152 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:34,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:34,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:55:34,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:45,219 INFO L130 PetriNetUnfolder]: 841/3647 cut-off events. [2022-11-20 10:55:45,219 INFO L131 PetriNetUnfolder]: For 223288/223292 co-relation queries the response was YES. [2022-11-20 10:55:45,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37835 conditions, 3647 events. 841/3647 cut-off events. For 223288/223292 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 37832 event pairs, 71 based on Foata normal form. 5/3625 useless extension candidates. Maximal degree in co-relation 37427. Up to 1207 conditions per place. [2022-11-20 10:55:45,319 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 802 selfloop transitions, 423 changer transitions 0/1250 dead transitions. [2022-11-20 10:55:45,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1252 places, 1250 transitions, 31768 flow [2022-11-20 10:55:45,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-20 10:55:45,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-11-20 10:55:45,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 1684 transitions. [2022-11-20 10:55:45,322 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41193737769080235 [2022-11-20 10:55:45,322 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 1684 transitions. [2022-11-20 10:55:45,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 1684 transitions. [2022-11-20 10:55:45,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:45,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 1684 transitions. [2022-11-20 10:55:45,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 30.071428571428573) internal successors, (1684), 56 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:45,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 73.0) internal successors, (4161), 57 states have internal predecessors, (4161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:45,328 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 73.0) internal successors, (4161), 57 states have internal predecessors, (4161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:45,329 INFO L175 Difference]: Start difference. First operand has 1197 places, 1094 transitions, 27152 flow. Second operand 56 states and 1684 transitions. [2022-11-20 10:55:45,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1252 places, 1250 transitions, 31768 flow [2022-11-20 10:55:48,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1193 places, 1250 transitions, 30496 flow, removed 61 selfloop flow, removed 59 redundant places. [2022-11-20 10:55:48,909 INFO L231 Difference]: Finished difference. Result has 1197 places, 1103 transitions, 27207 flow [2022-11-20 10:55:48,910 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=26057, PETRI_DIFFERENCE_MINUEND_PLACES=1138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1094, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=414, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=677, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=27207, PETRI_PLACES=1197, PETRI_TRANSITIONS=1103} [2022-11-20 10:55:48,910 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1121 predicate places. [2022-11-20 10:55:48,910 INFO L495 AbstractCegarLoop]: Abstraction has has 1197 places, 1103 transitions, 27207 flow [2022-11-20 10:55:48,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:48,910 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:48,911 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] [2022-11-20 10:55:48,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-11-20 10:55:48,911 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:55:48,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:48,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1094530554, now seen corresponding path program 15 times [2022-11-20 10:55:48,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:48,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131146138] [2022-11-20 10:55:48,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:48,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:49,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:49,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:49,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131146138] [2022-11-20 10:55:49,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131146138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:49,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:49,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:55:49,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341286663] [2022-11-20 10:55:49,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:49,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:55:49,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:49,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:55:49,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:55:49,899 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:55:49,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1197 places, 1103 transitions, 27207 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:49,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:49,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:55:49,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:56,877 INFO L130 PetriNetUnfolder]: 860/3677 cut-off events. [2022-11-20 10:55:56,877 INFO L131 PetriNetUnfolder]: For 219472/219478 co-relation queries the response was YES. [2022-11-20 10:55:56,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38309 conditions, 3677 events. 860/3677 cut-off events. For 219472/219478 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 37864 event pairs, 64 based on Foata normal form. 3/3654 useless extension candidates. Maximal degree in co-relation 37924. Up to 999 conditions per place. [2022-11-20 10:55:56,980 INFO L137 encePairwiseOnDemand]: 47/73 looper letters, 884 selfloop transitions, 369 changer transitions 0/1278 dead transitions. [2022-11-20 10:55:56,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1229 places, 1278 transitions, 32626 flow [2022-11-20 10:55:56,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 10:55:56,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-20 10:55:56,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1026 transitions. [2022-11-20 10:55:56,982 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4259028642590286 [2022-11-20 10:55:56,982 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1026 transitions. [2022-11-20 10:55:56,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1026 transitions. [2022-11-20 10:55:56,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:56,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1026 transitions. [2022-11-20 10:55:56,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 31.09090909090909) internal successors, (1026), 33 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:56,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 73.0) internal successors, (2482), 34 states have internal predecessors, (2482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:56,985 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 73.0) internal successors, (2482), 34 states have internal predecessors, (2482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:56,986 INFO L175 Difference]: Start difference. First operand has 1197 places, 1103 transitions, 27207 flow. Second operand 33 states and 1026 transitions. [2022-11-20 10:55:56,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1229 places, 1278 transitions, 32626 flow [2022-11-20 10:56:00,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1198 places, 1278 transitions, 31987 flow, removed 20 selfloop flow, removed 31 redundant places. [2022-11-20 10:56:00,768 INFO L231 Difference]: Finished difference. Result has 1209 places, 1127 transitions, 28229 flow [2022-11-20 10:56:00,769 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=26600, PETRI_DIFFERENCE_MINUEND_PLACES=1166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=346, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=749, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=28229, PETRI_PLACES=1209, PETRI_TRANSITIONS=1127} [2022-11-20 10:56:00,769 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1133 predicate places. [2022-11-20 10:56:00,769 INFO L495 AbstractCegarLoop]: Abstraction has has 1209 places, 1127 transitions, 28229 flow [2022-11-20 10:56:00,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:00,769 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:00,769 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] [2022-11-20 10:56:00,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-11-20 10:56:00,769 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:56:00,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:00,770 INFO L85 PathProgramCache]: Analyzing trace with hash 294027366, now seen corresponding path program 16 times [2022-11-20 10:56:00,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:00,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920038010] [2022-11-20 10:56:00,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:00,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:01,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:01,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:01,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920038010] [2022-11-20 10:56:01,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920038010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:01,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:01,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:56:01,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138070757] [2022-11-20 10:56:01,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:01,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:56:01,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:01,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:56:01,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:56:01,596 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:56:01,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1209 places, 1127 transitions, 28229 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:01,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:01,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:56:01,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:07,804 INFO L130 PetriNetUnfolder]: 862/3708 cut-off events. [2022-11-20 10:56:07,805 INFO L131 PetriNetUnfolder]: For 246171/246177 co-relation queries the response was YES. [2022-11-20 10:56:07,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39174 conditions, 3708 events. 862/3708 cut-off events. For 246171/246177 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 38570 event pairs, 108 based on Foata normal form. 3/3685 useless extension candidates. Maximal degree in co-relation 38779. Up to 1367 conditions per place. [2022-11-20 10:56:07,886 INFO L137 encePairwiseOnDemand]: 48/73 looper letters, 898 selfloop transitions, 342 changer transitions 0/1265 dead transitions. [2022-11-20 10:56:07,886 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1243 places, 1265 transitions, 32785 flow [2022-11-20 10:56:07,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 10:56:07,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 10:56:07,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1077 transitions. [2022-11-20 10:56:07,888 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4215264187866928 [2022-11-20 10:56:07,888 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1077 transitions. [2022-11-20 10:56:07,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1077 transitions. [2022-11-20 10:56:07,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:07,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1077 transitions. [2022-11-20 10:56:07,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 30.771428571428572) internal successors, (1077), 35 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:07,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 73.0) internal successors, (2628), 36 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:07,890 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 73.0) internal successors, (2628), 36 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:07,890 INFO L175 Difference]: Start difference. First operand has 1209 places, 1127 transitions, 28229 flow. Second operand 35 states and 1077 transitions. [2022-11-20 10:56:07,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1243 places, 1265 transitions, 32785 flow [2022-11-20 10:56:10,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1225 places, 1265 transitions, 31995 flow, removed 95 selfloop flow, removed 18 redundant places. [2022-11-20 10:56:10,273 INFO L231 Difference]: Finished difference. Result has 1232 places, 1146 transitions, 28708 flow [2022-11-20 10:56:10,274 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=27511, PETRI_DIFFERENCE_MINUEND_PLACES=1191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=325, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=796, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=28708, PETRI_PLACES=1232, PETRI_TRANSITIONS=1146} [2022-11-20 10:56:10,274 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1156 predicate places. [2022-11-20 10:56:10,274 INFO L495 AbstractCegarLoop]: Abstraction has has 1232 places, 1146 transitions, 28708 flow [2022-11-20 10:56:10,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:10,275 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:10,275 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] [2022-11-20 10:56:10,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-11-20 10:56:10,275 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:56:10,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:10,275 INFO L85 PathProgramCache]: Analyzing trace with hash -699250246, now seen corresponding path program 17 times [2022-11-20 10:56:10,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:10,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947391891] [2022-11-20 10:56:10,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:10,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:10,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:10,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:10,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947391891] [2022-11-20 10:56:10,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947391891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:10,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:10,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:56:10,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859834950] [2022-11-20 10:56:10,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:10,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:56:10,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:10,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:56:10,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:56:10,926 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:56:10,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1232 places, 1146 transitions, 28708 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:10,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:10,927 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:56:10,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:16,792 INFO L130 PetriNetUnfolder]: 861/3718 cut-off events. [2022-11-20 10:56:16,792 INFO L131 PetriNetUnfolder]: For 251302/251308 co-relation queries the response was YES. [2022-11-20 10:56:16,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39429 conditions, 3718 events. 861/3718 cut-off events. For 251302/251308 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 38754 event pairs, 112 based on Foata normal form. 3/3695 useless extension candidates. Maximal degree in co-relation 39030. Up to 1254 conditions per place. [2022-11-20 10:56:16,902 INFO L137 encePairwiseOnDemand]: 48/73 looper letters, 861 selfloop transitions, 397 changer transitions 0/1283 dead transitions. [2022-11-20 10:56:16,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1263 places, 1283 transitions, 33367 flow [2022-11-20 10:56:16,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 10:56:16,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-20 10:56:16,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 984 transitions. [2022-11-20 10:56:16,903 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4212328767123288 [2022-11-20 10:56:16,903 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 984 transitions. [2022-11-20 10:56:16,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 984 transitions. [2022-11-20 10:56:16,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:16,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 984 transitions. [2022-11-20 10:56:16,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 30.75) internal successors, (984), 32 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:16,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 73.0) internal successors, (2409), 33 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:16,906 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 73.0) internal successors, (2409), 33 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:16,906 INFO L175 Difference]: Start difference. First operand has 1232 places, 1146 transitions, 28708 flow. Second operand 32 states and 984 transitions. [2022-11-20 10:56:16,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1263 places, 1283 transitions, 33367 flow [2022-11-20 10:56:20,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1244 places, 1283 transitions, 32804 flow, removed 41 selfloop flow, removed 19 redundant places. [2022-11-20 10:56:20,179 INFO L231 Difference]: Finished difference. Result has 1250 places, 1160 transitions, 29500 flow [2022-11-20 10:56:20,180 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=28156, PETRI_DIFFERENCE_MINUEND_PLACES=1213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=384, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=757, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=29500, PETRI_PLACES=1250, PETRI_TRANSITIONS=1160} [2022-11-20 10:56:20,180 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1174 predicate places. [2022-11-20 10:56:20,181 INFO L495 AbstractCegarLoop]: Abstraction has has 1250 places, 1160 transitions, 29500 flow [2022-11-20 10:56:20,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:20,181 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:20,181 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] [2022-11-20 10:56:20,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-11-20 10:56:20,182 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:56:20,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:20,182 INFO L85 PathProgramCache]: Analyzing trace with hash -2146295418, now seen corresponding path program 18 times [2022-11-20 10:56:20,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:20,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413369075] [2022-11-20 10:56:20,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:20,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:20,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:20,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:20,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:20,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413369075] [2022-11-20 10:56:20,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413369075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:20,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:20,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:56:20,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883864698] [2022-11-20 10:56:20,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:20,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:56:20,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:20,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:56:20,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:56:20,809 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:56:20,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1250 places, 1160 transitions, 29500 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:20,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:20,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:56:20,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:31,288 INFO L130 PetriNetUnfolder]: 863/3722 cut-off events. [2022-11-20 10:56:31,288 INFO L131 PetriNetUnfolder]: For 247809/247815 co-relation queries the response was YES. [2022-11-20 10:56:31,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40211 conditions, 3722 events. 863/3722 cut-off events. For 247809/247815 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 38618 event pairs, 2 based on Foata normal form. 3/3699 useless extension candidates. Maximal degree in co-relation 39807. Up to 737 conditions per place. [2022-11-20 10:56:31,397 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 715 selfloop transitions, 626 changer transitions 0/1366 dead transitions. [2022-11-20 10:56:31,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1313 places, 1366 transitions, 35005 flow [2022-11-20 10:56:31,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-20 10:56:31,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2022-11-20 10:56:31,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 1901 transitions. [2022-11-20 10:56:31,400 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4068921232876712 [2022-11-20 10:56:31,400 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 1901 transitions. [2022-11-20 10:56:31,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 1901 transitions. [2022-11-20 10:56:31,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:31,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 1901 transitions. [2022-11-20 10:56:31,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 29.703125) internal successors, (1901), 64 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:31,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 73.0) internal successors, (4745), 65 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:31,404 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 73.0) internal successors, (4745), 65 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:31,404 INFO L175 Difference]: Start difference. First operand has 1250 places, 1160 transitions, 29500 flow. Second operand 64 states and 1901 transitions. [2022-11-20 10:56:31,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1313 places, 1366 transitions, 35005 flow [2022-11-20 10:56:34,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1292 places, 1366 transitions, 34167 flow, removed 55 selfloop flow, removed 21 redundant places. [2022-11-20 10:56:35,022 INFO L231 Difference]: Finished difference. Result has 1298 places, 1176 transitions, 30447 flow [2022-11-20 10:56:35,023 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=28678, PETRI_DIFFERENCE_MINUEND_PLACES=1229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=610, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=30447, PETRI_PLACES=1298, PETRI_TRANSITIONS=1176} [2022-11-20 10:56:35,023 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1222 predicate places. [2022-11-20 10:56:35,023 INFO L495 AbstractCegarLoop]: Abstraction has has 1298 places, 1176 transitions, 30447 flow [2022-11-20 10:56:35,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:35,024 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:35,024 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] [2022-11-20 10:56:35,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-11-20 10:56:35,024 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:56:35,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:35,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1999101956, now seen corresponding path program 19 times [2022-11-20 10:56:35,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:35,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941351651] [2022-11-20 10:56:35,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:35,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:35,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:35,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:35,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941351651] [2022-11-20 10:56:35,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941351651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:35,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:35,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:56:35,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427442738] [2022-11-20 10:56:35,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:35,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:56:35,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:35,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:56:35,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:56:35,679 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:56:35,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1298 places, 1176 transitions, 30447 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:35,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:35,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:56:35,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:41,872 INFO L130 PetriNetUnfolder]: 865/3754 cut-off events. [2022-11-20 10:56:41,872 INFO L131 PetriNetUnfolder]: For 256129/256135 co-relation queries the response was YES. [2022-11-20 10:56:41,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41196 conditions, 3754 events. 865/3754 cut-off events. For 256129/256135 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 39108 event pairs, 64 based on Foata normal form. 3/3731 useless extension candidates. Maximal degree in co-relation 40788. Up to 898 conditions per place. [2022-11-20 10:56:41,960 INFO L137 encePairwiseOnDemand]: 47/73 looper letters, 858 selfloop transitions, 455 changer transitions 0/1338 dead transitions. [2022-11-20 10:56:41,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1331 places, 1338 transitions, 35529 flow [2022-11-20 10:56:41,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 10:56:41,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 10:56:41,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1050 transitions. [2022-11-20 10:56:41,962 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42304593070104757 [2022-11-20 10:56:41,962 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1050 transitions. [2022-11-20 10:56:41,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1050 transitions. [2022-11-20 10:56:41,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:41,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1050 transitions. [2022-11-20 10:56:41,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 30.88235294117647) internal successors, (1050), 34 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:41,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 73.0) internal successors, (2555), 35 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:41,964 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 73.0) internal successors, (2555), 35 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:41,964 INFO L175 Difference]: Start difference. First operand has 1298 places, 1176 transitions, 30447 flow. Second operand 34 states and 1050 transitions. [2022-11-20 10:56:41,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1331 places, 1338 transitions, 35529 flow [2022-11-20 10:56:45,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1273 places, 1338 transitions, 34290 flow, removed 34 selfloop flow, removed 58 redundant places. [2022-11-20 10:56:45,487 INFO L231 Difference]: Finished difference. Result has 1280 places, 1187 transitions, 30515 flow [2022-11-20 10:56:45,488 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=29237, PETRI_DIFFERENCE_MINUEND_PLACES=1240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=444, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=725, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=30515, PETRI_PLACES=1280, PETRI_TRANSITIONS=1187} [2022-11-20 10:56:45,489 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1204 predicate places. [2022-11-20 10:56:45,489 INFO L495 AbstractCegarLoop]: Abstraction has has 1280 places, 1187 transitions, 30515 flow [2022-11-20 10:56:45,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:45,489 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:45,489 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] [2022-11-20 10:56:45,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-11-20 10:56:45,489 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:56:45,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:45,490 INFO L85 PathProgramCache]: Analyzing trace with hash -430287818, now seen corresponding path program 20 times [2022-11-20 10:56:45,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:45,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095751854] [2022-11-20 10:56:45,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:45,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:46,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:46,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:46,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095751854] [2022-11-20 10:56:46,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095751854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:46,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:46,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:56:46,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366795916] [2022-11-20 10:56:46,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:46,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:56:46,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:46,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:56:46,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:56:46,097 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:56:46,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1280 places, 1187 transitions, 30515 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:46,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:46,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:56:46,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:58,183 INFO L130 PetriNetUnfolder]: 873/3763 cut-off events. [2022-11-20 10:56:58,183 INFO L131 PetriNetUnfolder]: For 263927/263933 co-relation queries the response was YES. [2022-11-20 10:56:58,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41392 conditions, 3763 events. 873/3763 cut-off events. For 263927/263933 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 39135 event pairs, 2 based on Foata normal form. 13/3750 useless extension candidates. Maximal degree in co-relation 41001. Up to 374 conditions per place. [2022-11-20 10:56:58,285 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 584 selfloop transitions, 805 changer transitions 0/1414 dead transitions. [2022-11-20 10:56:58,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1360 places, 1414 transitions, 36549 flow [2022-11-20 10:56:58,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-11-20 10:56:58,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2022-11-20 10:56:58,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 2364 transitions. [2022-11-20 10:56:58,288 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3997970573313039 [2022-11-20 10:56:58,289 INFO L72 ComplementDD]: Start complementDD. Operand 81 states and 2364 transitions. [2022-11-20 10:56:58,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 81 states and 2364 transitions. [2022-11-20 10:56:58,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:58,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 81 states and 2364 transitions. [2022-11-20 10:56:58,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 82 states, 81 states have (on average 29.185185185185187) internal successors, (2364), 81 states have internal predecessors, (2364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:58,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 82 states, 82 states have (on average 73.0) internal successors, (5986), 82 states have internal predecessors, (5986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:58,294 INFO L81 ComplementDD]: Finished complementDD. Result has 82 states, 82 states have (on average 73.0) internal successors, (5986), 82 states have internal predecessors, (5986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:58,294 INFO L175 Difference]: Start difference. First operand has 1280 places, 1187 transitions, 30515 flow. Second operand 81 states and 2364 transitions. [2022-11-20 10:56:58,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1360 places, 1414 transitions, 36549 flow [2022-11-20 10:57:01,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1339 places, 1414 transitions, 35766 flow, removed 24 selfloop flow, removed 21 redundant places. [2022-11-20 10:57:01,447 INFO L231 Difference]: Finished difference. Result has 1348 places, 1233 transitions, 32436 flow [2022-11-20 10:57:01,448 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=29760, PETRI_DIFFERENCE_MINUEND_PLACES=1259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=761, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=81, PETRI_FLOW=32436, PETRI_PLACES=1348, PETRI_TRANSITIONS=1233} [2022-11-20 10:57:01,448 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1272 predicate places. [2022-11-20 10:57:01,448 INFO L495 AbstractCegarLoop]: Abstraction has has 1348 places, 1233 transitions, 32436 flow [2022-11-20 10:57:01,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:01,449 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:57:01,449 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] [2022-11-20 10:57:01,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-11-20 10:57:01,449 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:57:01,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:01,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1393496830, now seen corresponding path program 21 times [2022-11-20 10:57:01,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:01,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827015646] [2022-11-20 10:57:01,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:01,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:02,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:02,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:02,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827015646] [2022-11-20 10:57:02,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827015646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:02,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:02,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:57:02,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718933581] [2022-11-20 10:57:02,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:02,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:57:02,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:02,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:57:02,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:57:02,024 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:57:02,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1348 places, 1233 transitions, 32436 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:02,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:57:02,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:57:02,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:57:10,938 INFO L130 PetriNetUnfolder]: 873/3772 cut-off events. [2022-11-20 10:57:10,938 INFO L131 PetriNetUnfolder]: For 269957/269963 co-relation queries the response was YES. [2022-11-20 10:57:11,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42444 conditions, 3772 events. 873/3772 cut-off events. For 269957/269963 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 39219 event pairs, 2 based on Foata normal form. 3/3749 useless extension candidates. Maximal degree in co-relation 42023. Up to 374 conditions per place. [2022-11-20 10:57:11,035 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 548 selfloop transitions, 816 changer transitions 0/1389 dead transitions. [2022-11-20 10:57:11,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1404 places, 1389 transitions, 37384 flow [2022-11-20 10:57:11,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-11-20 10:57:11,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-11-20 10:57:11,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 1692 transitions. [2022-11-20 10:57:11,038 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3996221067548418 [2022-11-20 10:57:11,038 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 1692 transitions. [2022-11-20 10:57:11,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 1692 transitions. [2022-11-20 10:57:11,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:57:11,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 1692 transitions. [2022-11-20 10:57:11,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 29.17241379310345) internal successors, (1692), 58 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:11,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 73.0) internal successors, (4307), 59 states have internal predecessors, (4307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:11,042 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 73.0) internal successors, (4307), 59 states have internal predecessors, (4307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:11,042 INFO L175 Difference]: Start difference. First operand has 1348 places, 1233 transitions, 32436 flow. Second operand 58 states and 1692 transitions. [2022-11-20 10:57:11,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1404 places, 1389 transitions, 37384 flow [2022-11-20 10:57:14,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1343 places, 1389 transitions, 35650 flow, removed 73 selfloop flow, removed 61 redundant places. [2022-11-20 10:57:14,363 INFO L231 Difference]: Finished difference. Result has 1343 places, 1232 transitions, 32318 flow [2022-11-20 10:57:14,364 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=30686, PETRI_DIFFERENCE_MINUEND_PLACES=1286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=816, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=32318, PETRI_PLACES=1343, PETRI_TRANSITIONS=1232} [2022-11-20 10:57:14,364 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1267 predicate places. [2022-11-20 10:57:14,364 INFO L495 AbstractCegarLoop]: Abstraction has has 1343 places, 1232 transitions, 32318 flow [2022-11-20 10:57:14,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:14,364 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:57:14,364 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] [2022-11-20 10:57:14,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-11-20 10:57:14,364 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:57:14,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:14,365 INFO L85 PathProgramCache]: Analyzing trace with hash 956608903, now seen corresponding path program 13 times [2022-11-20 10:57:14,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:14,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970643616] [2022-11-20 10:57:14,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:14,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:14,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:14,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:14,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970643616] [2022-11-20 10:57:14,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970643616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:14,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:14,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:57:14,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421522963] [2022-11-20 10:57:14,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:14,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:57:14,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:14,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:57:14,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:57:14,979 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:57:14,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1343 places, 1232 transitions, 32318 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:14,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:57:14,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:57:14,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:57:20,847 INFO L130 PetriNetUnfolder]: 887/3860 cut-off events. [2022-11-20 10:57:20,848 INFO L131 PetriNetUnfolder]: For 289735/289739 co-relation queries the response was YES. [2022-11-20 10:57:20,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43204 conditions, 3860 events. 887/3860 cut-off events. For 289735/289739 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 40568 event pairs, 150 based on Foata normal form. 3/3835 useless extension candidates. Maximal degree in co-relation 42790. Up to 1502 conditions per place. [2022-11-20 10:57:20,934 INFO L137 encePairwiseOnDemand]: 48/73 looper letters, 1113 selfloop transitions, 253 changer transitions 0/1391 dead transitions. [2022-11-20 10:57:20,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1376 places, 1391 transitions, 38161 flow [2022-11-20 10:57:20,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 10:57:20,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 10:57:20,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1059 transitions. [2022-11-20 10:57:20,936 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4266720386784851 [2022-11-20 10:57:20,936 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1059 transitions. [2022-11-20 10:57:20,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1059 transitions. [2022-11-20 10:57:20,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:57:20,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1059 transitions. [2022-11-20 10:57:20,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 31.147058823529413) internal successors, (1059), 34 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:20,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 73.0) internal successors, (2555), 35 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:20,938 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 73.0) internal successors, (2555), 35 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:20,938 INFO L175 Difference]: Start difference. First operand has 1343 places, 1232 transitions, 32318 flow. Second operand 34 states and 1059 transitions. [2022-11-20 10:57:20,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1376 places, 1391 transitions, 38161 flow [2022-11-20 10:57:23,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1320 places, 1391 transitions, 36303 flow, removed 12 selfloop flow, removed 56 redundant places. [2022-11-20 10:57:23,793 INFO L231 Difference]: Finished difference. Result has 1333 places, 1271 transitions, 32596 flow [2022-11-20 10:57:23,794 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=30537, PETRI_DIFFERENCE_MINUEND_PLACES=1287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1000, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=32596, PETRI_PLACES=1333, PETRI_TRANSITIONS=1271} [2022-11-20 10:57:23,794 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1257 predicate places. [2022-11-20 10:57:23,794 INFO L495 AbstractCegarLoop]: Abstraction has has 1333 places, 1271 transitions, 32596 flow [2022-11-20 10:57:23,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:23,794 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:57:23,795 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] [2022-11-20 10:57:23,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-11-20 10:57:23,795 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:57:23,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:23,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1160116575, now seen corresponding path program 14 times [2022-11-20 10:57:23,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:23,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328970056] [2022-11-20 10:57:23,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:23,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:24,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:24,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:24,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328970056] [2022-11-20 10:57:24,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328970056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:24,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:24,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:57:24,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483685747] [2022-11-20 10:57:24,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:24,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:57:24,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:24,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:57:24,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:57:24,462 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:57:24,463 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1333 places, 1271 transitions, 32596 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:24,463 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:57:24,463 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:57:24,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:57:30,966 INFO L130 PetriNetUnfolder]: 901/3891 cut-off events. [2022-11-20 10:57:30,966 INFO L131 PetriNetUnfolder]: For 289237/289241 co-relation queries the response was YES. [2022-11-20 10:57:31,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43175 conditions, 3891 events. 901/3891 cut-off events. For 289237/289241 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 40762 event pairs, 96 based on Foata normal form. 3/3865 useless extension candidates. Maximal degree in co-relation 42754. Up to 1233 conditions per place. [2022-11-20 10:57:31,052 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 1114 selfloop transitions, 322 changer transitions 0/1461 dead transitions. [2022-11-20 10:57:31,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1371 places, 1461 transitions, 39011 flow [2022-11-20 10:57:31,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 10:57:31,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-20 10:57:31,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1214 transitions. [2022-11-20 10:57:31,054 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4264137688795223 [2022-11-20 10:57:31,054 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 1214 transitions. [2022-11-20 10:57:31,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 1214 transitions. [2022-11-20 10:57:31,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:57:31,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 1214 transitions. [2022-11-20 10:57:31,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 31.128205128205128) internal successors, (1214), 39 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:31,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:31,056 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:31,056 INFO L175 Difference]: Start difference. First operand has 1333 places, 1271 transitions, 32596 flow. Second operand 39 states and 1214 transitions. [2022-11-20 10:57:31,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1371 places, 1461 transitions, 39011 flow [2022-11-20 10:57:34,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1363 places, 1461 transitions, 38759 flow, removed 81 selfloop flow, removed 8 redundant places. [2022-11-20 10:57:34,157 INFO L231 Difference]: Finished difference. Result has 1383 places, 1310 transitions, 34922 flow [2022-11-20 10:57:34,157 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=32386, PETRI_DIFFERENCE_MINUEND_PLACES=1325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=284, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=971, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=34922, PETRI_PLACES=1383, PETRI_TRANSITIONS=1310} [2022-11-20 10:57:34,158 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1307 predicate places. [2022-11-20 10:57:34,158 INFO L495 AbstractCegarLoop]: Abstraction has has 1383 places, 1310 transitions, 34922 flow [2022-11-20 10:57:34,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:34,158 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:57:34,158 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] [2022-11-20 10:57:34,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-11-20 10:57:34,159 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:57:34,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:34,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1323712833, now seen corresponding path program 15 times [2022-11-20 10:57:34,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:34,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256475348] [2022-11-20 10:57:34,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:34,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:34,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:34,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:34,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:34,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256475348] [2022-11-20 10:57:34,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256475348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:34,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:34,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:57:34,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453716754] [2022-11-20 10:57:34,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:34,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:57:34,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:34,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:57:34,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:57:34,943 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:57:34,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1383 places, 1310 transitions, 34922 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:34,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:57:34,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:57:34,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:57:41,542 INFO L130 PetriNetUnfolder]: 911/3954 cut-off events. [2022-11-20 10:57:41,542 INFO L131 PetriNetUnfolder]: For 340945/340949 co-relation queries the response was YES. [2022-11-20 10:57:41,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45271 conditions, 3954 events. 911/3954 cut-off events. For 340945/340949 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 41896 event pairs, 148 based on Foata normal form. 3/3927 useless extension candidates. Maximal degree in co-relation 44828. Up to 1556 conditions per place. [2022-11-20 10:57:41,642 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 1135 selfloop transitions, 287 changer transitions 0/1447 dead transitions. [2022-11-20 10:57:41,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1419 places, 1447 transitions, 40289 flow [2022-11-20 10:57:41,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 10:57:41,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-20 10:57:41,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1147 transitions. [2022-11-20 10:57:41,644 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4246575342465753 [2022-11-20 10:57:41,644 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1147 transitions. [2022-11-20 10:57:41,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1147 transitions. [2022-11-20 10:57:41,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:57:41,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1147 transitions. [2022-11-20 10:57:41,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 31.0) internal successors, (1147), 37 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:41,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 73.0) internal successors, (2774), 38 states have internal predecessors, (2774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:41,647 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 73.0) internal successors, (2774), 38 states have internal predecessors, (2774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:41,647 INFO L175 Difference]: Start difference. First operand has 1383 places, 1310 transitions, 34922 flow. Second operand 37 states and 1147 transitions. [2022-11-20 10:57:41,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1419 places, 1447 transitions, 40289 flow [2022-11-20 10:57:45,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1410 places, 1447 transitions, 40069 flow, removed 56 selfloop flow, removed 9 redundant places. [2022-11-20 10:57:45,252 INFO L231 Difference]: Finished difference. Result has 1420 places, 1329 transitions, 36320 flow [2022-11-20 10:57:45,253 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=34702, PETRI_DIFFERENCE_MINUEND_PLACES=1374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1032, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=36320, PETRI_PLACES=1420, PETRI_TRANSITIONS=1329} [2022-11-20 10:57:45,254 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1344 predicate places. [2022-11-20 10:57:45,254 INFO L495 AbstractCegarLoop]: Abstraction has has 1420 places, 1329 transitions, 36320 flow [2022-11-20 10:57:45,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:45,255 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:57:45,255 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] [2022-11-20 10:57:45,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-11-20 10:57:45,255 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:57:45,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:45,256 INFO L85 PathProgramCache]: Analyzing trace with hash 783231479, now seen corresponding path program 16 times [2022-11-20 10:57:45,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:45,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374606379] [2022-11-20 10:57:45,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:45,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:46,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:46,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:46,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374606379] [2022-11-20 10:57:46,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374606379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:46,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:46,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:57:46,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021554331] [2022-11-20 10:57:46,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:46,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:57:46,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:46,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:57:46,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:57:46,155 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:57:46,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1420 places, 1329 transitions, 36320 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:46,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:57:46,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:57:46,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:57:53,259 INFO L130 PetriNetUnfolder]: 923/4017 cut-off events. [2022-11-20 10:57:53,259 INFO L131 PetriNetUnfolder]: For 371967/371971 co-relation queries the response was YES. [2022-11-20 10:57:53,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47007 conditions, 4017 events. 923/4017 cut-off events. For 371967/371971 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 42645 event pairs, 148 based on Foata normal form. 3/3990 useless extension candidates. Maximal degree in co-relation 46552. Up to 1554 conditions per place. [2022-11-20 10:57:53,363 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 1140 selfloop transitions, 301 changer transitions 0/1466 dead transitions. [2022-11-20 10:57:53,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1456 places, 1466 transitions, 41893 flow [2022-11-20 10:57:53,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 10:57:53,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-20 10:57:53,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1150 transitions. [2022-11-20 10:57:53,365 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4257682339874121 [2022-11-20 10:57:53,365 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1150 transitions. [2022-11-20 10:57:53,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1150 transitions. [2022-11-20 10:57:53,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:57:53,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1150 transitions. [2022-11-20 10:57:53,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 31.08108108108108) internal successors, (1150), 37 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:53,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 73.0) internal successors, (2774), 38 states have internal predecessors, (2774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:53,367 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 73.0) internal successors, (2774), 38 states have internal predecessors, (2774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:53,368 INFO L175 Difference]: Start difference. First operand has 1420 places, 1329 transitions, 36320 flow. Second operand 37 states and 1150 transitions. [2022-11-20 10:57:53,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1456 places, 1466 transitions, 41893 flow [2022-11-20 10:57:56,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1436 places, 1466 transitions, 41603 flow, removed 54 selfloop flow, removed 20 redundant places. [2022-11-20 10:57:57,018 INFO L231 Difference]: Finished difference. Result has 1446 places, 1346 transitions, 37784 flow [2022-11-20 10:57:57,018 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=36036, PETRI_DIFFERENCE_MINUEND_PLACES=1400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=284, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1036, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=37784, PETRI_PLACES=1446, PETRI_TRANSITIONS=1346} [2022-11-20 10:57:57,019 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1370 predicate places. [2022-11-20 10:57:57,019 INFO L495 AbstractCegarLoop]: Abstraction has has 1446 places, 1346 transitions, 37784 flow [2022-11-20 10:57:57,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:57,019 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:57:57,019 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] [2022-11-20 10:57:57,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-11-20 10:57:57,019 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 10:57:57,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:57,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1062136829, now seen corresponding path program 17 times [2022-11-20 10:57:57,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:57,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145041102] [2022-11-20 10:57:57,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:57,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:57,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:57,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:57,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145041102] [2022-11-20 10:57:57,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145041102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:57,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:57,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 10:57:57,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889710398] [2022-11-20 10:57:57,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:57,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:57:57,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:57,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:57:57,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:57:57,763 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-20 10:57:57,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1446 places, 1346 transitions, 37784 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:57,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:57:57,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-20 10:57:57,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand