./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60437341-5121-4068-9cc4-31b79d5e4f97/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60437341-5121-4068-9cc4-31b79d5e4f97/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_60437341-5121-4068-9cc4-31b79d5e4f97/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60437341-5121-4068-9cc4-31b79d5e4f97/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60437341-5121-4068-9cc4-31b79d5e4f97/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60437341-5121-4068-9cc4-31b79d5e4f97/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db --- 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 11:08:53,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:08:53,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:08:53,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:08:53,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:08:53,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:08:53,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:08:53,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:08:53,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:08:53,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:08:53,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:08:53,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:08:53,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:08:53,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:08:53,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:08:53,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:08:53,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:08:53,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:08:53,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:08:53,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:08:53,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:08:53,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:08:53,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:08:53,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:08:53,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:08:53,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:08:53,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:08:53,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:08:53,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:08:53,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:08:53,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:08:53,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:08:53,619 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:08:53,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:08:53,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:08:53,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:08:53,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:08:53,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:08:53,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:08:53,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:08:53,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:08:53,631 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60437341-5121-4068-9cc4-31b79d5e4f97/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:08:53,675 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:08:53,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:08:53,676 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:08:53,676 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:08:53,677 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:08:53,677 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:08:53,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:08:53,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:08:53,684 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:08:53,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:08:53,686 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:08:53,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:08:53,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:08:53,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:08:53,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:08:53,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:08:53,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:08:53,687 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:08:53,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:08:53,688 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:08:53,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:08:53,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:08:53,689 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:08:53,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:08:53,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:08:53,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:08:53,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:08:53,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:08:53,691 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:08:53,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:08:53,692 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:08:53,692 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:08:53,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:08:53,692 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_60437341-5121-4068-9cc4-31b79d5e4f97/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60437341-5121-4068-9cc4-31b79d5e4f97/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db [2022-11-20 11:08:54,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:08:54,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:08:54,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:08:54,114 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:08:54,115 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:08:54,116 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60437341-5121-4068-9cc4-31b79d5e4f97/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2022-11-20 11:08:57,445 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:08:57,921 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:08:57,921 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60437341-5121-4068-9cc4-31b79d5e4f97/sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2022-11-20 11:08:57,955 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60437341-5121-4068-9cc4-31b79d5e4f97/bin/uautomizer-ug76WZFUDN/data/9ef829d27/7331e05da15b4c6ba4edb4963e0f9367/FLAG1957e3178 [2022-11-20 11:08:57,974 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60437341-5121-4068-9cc4-31b79d5e4f97/bin/uautomizer-ug76WZFUDN/data/9ef829d27/7331e05da15b4c6ba4edb4963e0f9367 [2022-11-20 11:08:57,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:08:57,985 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:08:57,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:08:57,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:08:57,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:08:57,993 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:08:57" (1/1) ... [2022-11-20 11:08:57,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d2f6504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:57, skipping insertion in model container [2022-11-20 11:08:57,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:08:57" (1/1) ... [2022-11-20 11:08:58,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:08:58,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:08:59,149 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60437341-5121-4068-9cc4-31b79d5e4f97/sv-benchmarks/c/ldv-races/race-2_1-container_of.i[76077,76090] [2022-11-20 11:08:59,226 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:08:59,243 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:08:59,328 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60437341-5121-4068-9cc4-31b79d5e4f97/sv-benchmarks/c/ldv-races/race-2_1-container_of.i[76077,76090] [2022-11-20 11:08:59,342 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:08:59,470 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:08:59,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:59 WrapperNode [2022-11-20 11:08:59,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:08:59,473 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:08:59,473 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:08:59,473 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:08:59,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:59" (1/1) ... [2022-11-20 11:08:59,538 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:59" (1/1) ... [2022-11-20 11:08:59,602 INFO L138 Inliner]: procedures = 482, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 133 [2022-11-20 11:08:59,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:08:59,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:08:59,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:08:59,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:08:59,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:59" (1/1) ... [2022-11-20 11:08:59,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:59" (1/1) ... [2022-11-20 11:08:59,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:59" (1/1) ... [2022-11-20 11:08:59,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:59" (1/1) ... [2022-11-20 11:08:59,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:59" (1/1) ... [2022-11-20 11:08:59,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:59" (1/1) ... [2022-11-20 11:08:59,687 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:59" (1/1) ... [2022-11-20 11:08:59,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:59" (1/1) ... [2022-11-20 11:08:59,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:08:59,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:08:59,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:08:59,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:08:59,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:59" (1/1) ... [2022-11-20 11:08:59,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:08:59,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60437341-5121-4068-9cc4-31b79d5e4f97/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:08:59,766 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60437341-5121-4068-9cc4-31b79d5e4f97/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:08:59,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60437341-5121-4068-9cc4-31b79d5e4f97/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:08:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:08:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:08:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 11:08:59,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:08:59,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 11:08:59,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:08:59,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:08:59,855 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-11-20 11:08:59,855 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-11-20 11:08:59,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:08:59,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:08:59,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:08:59,858 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 11:09:00,371 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:09:00,373 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:09:00,660 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:09:00,670 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:09:00,670 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 11:09:00,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:09:00 BoogieIcfgContainer [2022-11-20 11:09:00,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:09:00,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:09:00,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:09:00,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:09:00,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:08:57" (1/3) ... [2022-11-20 11:09:00,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12341b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:09:00, skipping insertion in model container [2022-11-20 11:09:00,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:59" (2/3) ... [2022-11-20 11:09:00,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12341b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:09:00, skipping insertion in model container [2022-11-20 11:09:00,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:09:00" (3/3) ... [2022-11-20 11:09:00,683 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_1-container_of.i [2022-11-20 11:09:00,694 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:09:00,707 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:09:00,707 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-20 11:09:00,707 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:09:00,854 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 11:09:00,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 195 transitions, 406 flow [2022-11-20 11:09:01,013 INFO L130 PetriNetUnfolder]: 10/240 cut-off events. [2022-11-20 11:09:01,014 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:09:01,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 240 events. 10/240 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 405 event pairs, 0 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 141. Up to 4 conditions per place. [2022-11-20 11:09:01,021 INFO L82 GeneralOperation]: Start removeDead. Operand has 193 places, 195 transitions, 406 flow [2022-11-20 11:09:01,028 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 181 transitions, 374 flow [2022-11-20 11:09:01,041 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:09:01,049 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;@2eed582f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:09:01,049 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-20 11:09:01,063 INFO L130 PetriNetUnfolder]: 0/46 cut-off events. [2022-11-20 11:09:01,063 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:09:01,064 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:09:01,065 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] [2022-11-20 11:09:01,065 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-20 11:09:01,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:01,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1888391755, now seen corresponding path program 1 times [2022-11-20 11:09:01,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:01,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476472619] [2022-11-20 11:09:01,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:01,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:02,033 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 11:09:02,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:02,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476472619] [2022-11-20 11:09:02,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476472619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:02,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:02,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:09:02,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220102181] [2022-11-20 11:09:02,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:02,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:09:02,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:02,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:09:02,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:09:02,109 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 195 [2022-11-20 11:09:02,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 181 transitions, 374 flow. Second operand has 6 states, 6 states have (on average 120.5) internal successors, (723), 6 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:02,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:09:02,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 195 [2022-11-20 11:09:02,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:09:02,842 INFO L130 PetriNetUnfolder]: 361/1046 cut-off events. [2022-11-20 11:09:02,843 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-20 11:09:02,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1737 conditions, 1046 events. 361/1046 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6142 event pairs, 216 based on Foata normal form. 20/1013 useless extension candidates. Maximal degree in co-relation 1489. Up to 397 conditions per place. [2022-11-20 11:09:02,863 INFO L137 encePairwiseOnDemand]: 173/195 looper letters, 53 selfloop transitions, 17 changer transitions 1/177 dead transitions. [2022-11-20 11:09:02,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 177 transitions, 508 flow [2022-11-20 11:09:02,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:09:02,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:09:02,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1138 transitions. [2022-11-20 11:09:02,894 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6484330484330484 [2022-11-20 11:09:02,895 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1138 transitions. [2022-11-20 11:09:02,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1138 transitions. [2022-11-20 11:09:02,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:09:02,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1138 transitions. [2022-11-20 11:09:02,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.44444444444444) internal successors, (1138), 9 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:02,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 195.0) internal successors, (1950), 10 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:02,928 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 195.0) internal successors, (1950), 10 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:02,931 INFO L175 Difference]: Start difference. First operand has 181 places, 181 transitions, 374 flow. Second operand 9 states and 1138 transitions. [2022-11-20 11:09:02,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 177 transitions, 508 flow [2022-11-20 11:09:02,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 177 transitions, 500 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:09:02,947 INFO L231 Difference]: Finished difference. Result has 179 places, 170 transitions, 385 flow [2022-11-20 11:09:02,949 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=385, PETRI_PLACES=179, PETRI_TRANSITIONS=170} [2022-11-20 11:09:02,956 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, -2 predicate places. [2022-11-20 11:09:02,957 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 170 transitions, 385 flow [2022-11-20 11:09:02,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.5) internal successors, (723), 6 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:02,959 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:09:02,959 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:02,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:09:02,961 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-20 11:09:02,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:02,963 INFO L85 PathProgramCache]: Analyzing trace with hash -57843741, now seen corresponding path program 1 times [2022-11-20 11:09:02,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:02,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780476720] [2022-11-20 11:09:02,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:02,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:03,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:03,497 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 11:09:03,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:03,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780476720] [2022-11-20 11:09:03,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780476720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:03,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:03,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:09:03,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670917764] [2022-11-20 11:09:03,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:03,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:09:03,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:03,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:09:03,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:09:03,515 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 195 [2022-11-20 11:09:03,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 170 transitions, 385 flow. Second operand has 6 states, 6 states have (on average 121.33333333333333) internal successors, (728), 6 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:03,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:09:03,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 195 [2022-11-20 11:09:03,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:09:04,001 INFO L130 PetriNetUnfolder]: 361/1016 cut-off events. [2022-11-20 11:09:04,008 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-11-20 11:09:04,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1784 conditions, 1016 events. 361/1016 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5868 event pairs, 120 based on Foata normal form. 1/984 useless extension candidates. Maximal degree in co-relation 882. Up to 262 conditions per place. [2022-11-20 11:09:04,018 INFO L137 encePairwiseOnDemand]: 176/195 looper letters, 61 selfloop transitions, 18 changer transitions 1/185 dead transitions. [2022-11-20 11:09:04,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 185 transitions, 577 flow [2022-11-20 11:09:04,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:09:04,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 11:09:04,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1261 transitions. [2022-11-20 11:09:04,023 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6466666666666666 [2022-11-20 11:09:04,023 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1261 transitions. [2022-11-20 11:09:04,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1261 transitions. [2022-11-20 11:09:04,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:09:04,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1261 transitions. [2022-11-20 11:09:04,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 126.1) internal successors, (1261), 10 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:04,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 195.0) internal successors, (2145), 11 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:04,035 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 195.0) internal successors, (2145), 11 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:04,036 INFO L175 Difference]: Start difference. First operand has 179 places, 170 transitions, 385 flow. Second operand 10 states and 1261 transitions. [2022-11-20 11:09:04,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 185 transitions, 577 flow [2022-11-20 11:09:04,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 185 transitions, 548 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-20 11:09:04,048 INFO L231 Difference]: Finished difference. Result has 180 places, 169 transitions, 396 flow [2022-11-20 11:09:04,049 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=396, PETRI_PLACES=180, PETRI_TRANSITIONS=169} [2022-11-20 11:09:04,050 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, -1 predicate places. [2022-11-20 11:09:04,050 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 169 transitions, 396 flow [2022-11-20 11:09:04,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 121.33333333333333) internal successors, (728), 6 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:04,051 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:09:04,052 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:04,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:09:04,054 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-20 11:09:04,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:04,057 INFO L85 PathProgramCache]: Analyzing trace with hash 5829728, now seen corresponding path program 1 times [2022-11-20 11:09:04,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:04,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879781453] [2022-11-20 11:09:04,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:04,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:04,656 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 11:09:04,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:04,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879781453] [2022-11-20 11:09:04,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879781453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:04,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:04,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:09:04,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324441584] [2022-11-20 11:09:04,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:04,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:09:04,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:04,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:09:04,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:09:04,662 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 195 [2022-11-20 11:09:04,664 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 169 transitions, 396 flow. Second operand has 6 states, 6 states have (on average 120.33333333333333) internal successors, (722), 6 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:04,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:09:04,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 195 [2022-11-20 11:09:04,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:09:05,532 INFO L130 PetriNetUnfolder]: 832/2093 cut-off events. [2022-11-20 11:09:05,532 INFO L131 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2022-11-20 11:09:05,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3836 conditions, 2093 events. 832/2093 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 14040 event pairs, 169 based on Foata normal form. 32/2097 useless extension candidates. Maximal degree in co-relation 1029. Up to 499 conditions per place. [2022-11-20 11:09:05,551 INFO L137 encePairwiseOnDemand]: 174/195 looper letters, 100 selfloop transitions, 49 changer transitions 0/254 dead transitions. [2022-11-20 11:09:05,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 254 transitions, 880 flow [2022-11-20 11:09:05,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:09:05,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 11:09:05,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1657 transitions. [2022-11-20 11:09:05,559 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6536489151873768 [2022-11-20 11:09:05,559 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1657 transitions. [2022-11-20 11:09:05,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1657 transitions. [2022-11-20 11:09:05,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:09:05,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1657 transitions. [2022-11-20 11:09:05,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 127.46153846153847) internal successors, (1657), 13 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:05,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:05,579 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:05,579 INFO L175 Difference]: Start difference. First operand has 180 places, 169 transitions, 396 flow. Second operand 13 states and 1657 transitions. [2022-11-20 11:09:05,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 254 transitions, 880 flow [2022-11-20 11:09:05,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 254 transitions, 834 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-20 11:09:05,596 INFO L231 Difference]: Finished difference. Result has 192 places, 206 transitions, 666 flow [2022-11-20 11:09:05,596 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=666, PETRI_PLACES=192, PETRI_TRANSITIONS=206} [2022-11-20 11:09:05,599 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 11 predicate places. [2022-11-20 11:09:05,599 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 206 transitions, 666 flow [2022-11-20 11:09:05,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.33333333333333) internal successors, (722), 6 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:05,600 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:09:05,601 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:05,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:09:05,601 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-20 11:09:05,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:05,603 INFO L85 PathProgramCache]: Analyzing trace with hash -2139572029, now seen corresponding path program 1 times [2022-11-20 11:09:05,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:05,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113473645] [2022-11-20 11:09:05,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:05,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:06,156 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 11:09:06,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:06,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113473645] [2022-11-20 11:09:06,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113473645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:06,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:06,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:09:06,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649363538] [2022-11-20 11:09:06,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:06,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:09:06,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:06,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:09:06,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:09:06,168 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 195 [2022-11-20 11:09:06,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 206 transitions, 666 flow. Second operand has 6 states, 6 states have (on average 121.16666666666667) internal successors, (727), 6 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:06,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:09:06,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 195 [2022-11-20 11:09:06,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:09:07,194 INFO L130 PetriNetUnfolder]: 1084/2667 cut-off events. [2022-11-20 11:09:07,194 INFO L131 PetriNetUnfolder]: For 10874/10936 co-relation queries the response was YES. [2022-11-20 11:09:07,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9161 conditions, 2667 events. 1084/2667 cut-off events. For 10874/10936 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 19335 event pairs, 218 based on Foata normal form. 47/2686 useless extension candidates. Maximal degree in co-relation 7852. Up to 732 conditions per place. [2022-11-20 11:09:07,225 INFO L137 encePairwiseOnDemand]: 176/195 looper letters, 74 selfloop transitions, 48 changer transitions 69/295 dead transitions. [2022-11-20 11:09:07,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 295 transitions, 1750 flow [2022-11-20 11:09:07,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:09:07,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 11:09:07,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1406 transitions. [2022-11-20 11:09:07,230 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6554778554778555 [2022-11-20 11:09:07,230 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1406 transitions. [2022-11-20 11:09:07,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1406 transitions. [2022-11-20 11:09:07,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:09:07,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1406 transitions. [2022-11-20 11:09:07,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 127.81818181818181) internal successors, (1406), 11 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:07,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 195.0) internal successors, (2340), 12 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:07,247 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 195.0) internal successors, (2340), 12 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:07,247 INFO L175 Difference]: Start difference. First operand has 192 places, 206 transitions, 666 flow. Second operand 11 states and 1406 transitions. [2022-11-20 11:09:07,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 295 transitions, 1750 flow [2022-11-20 11:09:07,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 295 transitions, 1750 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:09:07,274 INFO L231 Difference]: Finished difference. Result has 210 places, 212 transitions, 979 flow [2022-11-20 11:09:07,274 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=979, PETRI_PLACES=210, PETRI_TRANSITIONS=212} [2022-11-20 11:09:07,276 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 29 predicate places. [2022-11-20 11:09:07,276 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 212 transitions, 979 flow [2022-11-20 11:09:07,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 121.16666666666667) internal successors, (727), 6 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:07,280 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:09:07,280 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:07,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:09:07,281 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-20 11:09:07,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:07,281 INFO L85 PathProgramCache]: Analyzing trace with hash -902131826, now seen corresponding path program 1 times [2022-11-20 11:09:07,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:07,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291162194] [2022-11-20 11:09:07,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:07,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:07,494 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 11:09:07,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:07,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291162194] [2022-11-20 11:09:07,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291162194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:07,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:07,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:09:07,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836427343] [2022-11-20 11:09:07,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:07,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:09:07,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:07,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:09:07,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:09:07,498 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 195 [2022-11-20 11:09:07,499 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 212 transitions, 979 flow. Second operand has 5 states, 5 states have (on average 170.2) internal successors, (851), 5 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:07,499 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:09:07,499 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 195 [2022-11-20 11:09:07,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:09:07,598 INFO L130 PetriNetUnfolder]: 4/168 cut-off events. [2022-11-20 11:09:07,598 INFO L131 PetriNetUnfolder]: For 459/531 co-relation queries the response was YES. [2022-11-20 11:09:07,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 168 events. 4/168 cut-off events. For 459/531 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 191 event pairs, 4 based on Foata normal form. 8/174 useless extension candidates. Maximal degree in co-relation 337. Up to 13 conditions per place. [2022-11-20 11:09:07,599 INFO L137 encePairwiseOnDemand]: 190/195 looper letters, 9 selfloop transitions, 4 changer transitions 0/140 dead transitions. [2022-11-20 11:09:07,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 140 transitions, 438 flow [2022-11-20 11:09:07,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:09:07,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:09:07,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1022 transitions. [2022-11-20 11:09:07,603 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8735042735042735 [2022-11-20 11:09:07,603 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1022 transitions. [2022-11-20 11:09:07,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1022 transitions. [2022-11-20 11:09:07,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:09:07,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1022 transitions. [2022-11-20 11:09:07,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 170.33333333333334) internal successors, (1022), 6 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 11:09:07,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 195.0) internal successors, (1365), 7 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:07,610 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 195.0) internal successors, (1365), 7 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:07,610 INFO L175 Difference]: Start difference. First operand has 210 places, 212 transitions, 979 flow. Second operand 6 states and 1022 transitions. [2022-11-20 11:09:07,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 140 transitions, 438 flow [2022-11-20 11:09:07,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 140 transitions, 318 flow, removed 40 selfloop flow, removed 19 redundant places. [2022-11-20 11:09:07,616 INFO L231 Difference]: Finished difference. Result has 153 places, 140 transitions, 300 flow [2022-11-20 11:09:07,616 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=300, PETRI_PLACES=153, PETRI_TRANSITIONS=140} [2022-11-20 11:09:07,619 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, -28 predicate places. [2022-11-20 11:09:07,619 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 140 transitions, 300 flow [2022-11-20 11:09:07,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 170.2) internal successors, (851), 5 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:07,620 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:09:07,620 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:07,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:09:07,621 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-20 11:09:07,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:07,622 INFO L85 PathProgramCache]: Analyzing trace with hash -971686872, now seen corresponding path program 1 times [2022-11-20 11:09:07,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:07,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139302588] [2022-11-20 11:09:07,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:07,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:09,238 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 11:09:09,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:09,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139302588] [2022-11-20 11:09:09,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139302588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:09,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:09,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 11:09:09,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737061195] [2022-11-20 11:09:09,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:09,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:09:09,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:09,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:09:09,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:09:09,246 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 195 [2022-11-20 11:09:09,251 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 140 transitions, 300 flow. Second operand has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:09,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:09:09,252 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 195 [2022-11-20 11:09:09,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:09:10,809 INFO L130 PetriNetUnfolder]: 140/655 cut-off events. [2022-11-20 11:09:10,810 INFO L131 PetriNetUnfolder]: For 60/116 co-relation queries the response was YES. [2022-11-20 11:09:10,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1096 conditions, 655 events. 140/655 cut-off events. For 60/116 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3348 event pairs, 2 based on Foata normal form. 9/650 useless extension candidates. Maximal degree in co-relation 1088. Up to 84 conditions per place. [2022-11-20 11:09:10,816 INFO L137 encePairwiseOnDemand]: 181/195 looper letters, 99 selfloop transitions, 17 changer transitions 0/229 dead transitions. [2022-11-20 11:09:10,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 229 transitions, 759 flow [2022-11-20 11:09:10,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:09:10,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 11:09:10,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2145 transitions. [2022-11-20 11:09:10,823 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8461538461538461 [2022-11-20 11:09:10,823 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2145 transitions. [2022-11-20 11:09:10,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2145 transitions. [2022-11-20 11:09:10,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:09:10,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2145 transitions. [2022-11-20 11:09:10,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 165.0) internal successors, (2145), 13 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:10,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:10,837 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:10,838 INFO L175 Difference]: Start difference. First operand has 153 places, 140 transitions, 300 flow. Second operand 13 states and 2145 transitions. [2022-11-20 11:09:10,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 229 transitions, 759 flow [2022-11-20 11:09:10,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 229 transitions, 752 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:09:10,844 INFO L231 Difference]: Finished difference. Result has 166 places, 150 transitions, 376 flow [2022-11-20 11:09:10,845 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=376, PETRI_PLACES=166, PETRI_TRANSITIONS=150} [2022-11-20 11:09:10,845 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, -15 predicate places. [2022-11-20 11:09:10,846 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 150 transitions, 376 flow [2022-11-20 11:09:10,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:10,847 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:09:10,848 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:10,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:09:10,848 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-20 11:09:10,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:10,849 INFO L85 PathProgramCache]: Analyzing trace with hash -239241560, now seen corresponding path program 2 times [2022-11-20 11:09:10,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:10,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231945816] [2022-11-20 11:09:10,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:10,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:14,136 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 11:09:14,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:14,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231945816] [2022-11-20 11:09:14,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231945816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:14,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:14,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-20 11:09:14,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11465486] [2022-11-20 11:09:14,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:14,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 11:09:14,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:14,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 11:09:14,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2022-11-20 11:09:14,147 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 195 [2022-11-20 11:09:14,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 150 transitions, 376 flow. Second operand has 24 states, 24 states have (on average 91.83333333333333) internal successors, (2204), 24 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:14,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:09:14,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 195 [2022-11-20 11:09:14,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:09:28,126 INFO L130 PetriNetUnfolder]: 1471/3064 cut-off events. [2022-11-20 11:09:28,127 INFO L131 PetriNetUnfolder]: For 1329/1339 co-relation queries the response was YES. [2022-11-20 11:09:28,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7272 conditions, 3064 events. 1471/3064 cut-off events. For 1329/1339 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 19435 event pairs, 39 based on Foata normal form. 10/3035 useless extension candidates. Maximal degree in co-relation 7259. Up to 426 conditions per place. [2022-11-20 11:09:28,200 INFO L137 encePairwiseOnDemand]: 163/195 looper letters, 307 selfloop transitions, 119 changer transitions 0/491 dead transitions. [2022-11-20 11:09:28,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 491 transitions, 2259 flow [2022-11-20 11:09:28,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-11-20 11:09:28,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-11-20 11:09:28,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 5558 transitions. [2022-11-20 11:09:28,217 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4914235190097259 [2022-11-20 11:09:28,217 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 5558 transitions. [2022-11-20 11:09:28,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 5558 transitions. [2022-11-20 11:09:28,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:09:28,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 5558 transitions. [2022-11-20 11:09:28,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 95.82758620689656) internal successors, (5558), 58 states have internal predecessors, (5558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:28,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 195.0) internal successors, (11505), 59 states have internal predecessors, (11505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:28,264 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 195.0) internal successors, (11505), 59 states have internal predecessors, (11505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:28,264 INFO L175 Difference]: Start difference. First operand has 166 places, 150 transitions, 376 flow. Second operand 58 states and 5558 transitions. [2022-11-20 11:09:28,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 491 transitions, 2259 flow [2022-11-20 11:09:28,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 491 transitions, 2212 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 11:09:28,279 INFO L231 Difference]: Finished difference. Result has 233 places, 245 transitions, 1058 flow [2022-11-20 11:09:28,279 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=1058, PETRI_PLACES=233, PETRI_TRANSITIONS=245} [2022-11-20 11:09:28,280 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 52 predicate places. [2022-11-20 11:09:28,280 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 245 transitions, 1058 flow [2022-11-20 11:09:28,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 91.83333333333333) internal successors, (2204), 24 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:28,282 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:09:28,282 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:28,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:09:28,283 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-20 11:09:28,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:28,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1449337986, now seen corresponding path program 3 times [2022-11-20 11:09:28,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:28,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117707849] [2022-11-20 11:09:28,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:28,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:28,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:31,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:31,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:31,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117707849] [2022-11-20 11:09:31,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117707849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:31,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:31,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-20 11:09:31,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340000664] [2022-11-20 11:09:31,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:31,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 11:09:31,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:31,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 11:09:31,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2022-11-20 11:09:31,248 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 195 [2022-11-20 11:09:31,251 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 245 transitions, 1058 flow. Second operand has 24 states, 24 states have (on average 91.83333333333333) internal successors, (2204), 24 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:31,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:09:31,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 195 [2022-11-20 11:09:31,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:09:42,941 INFO L130 PetriNetUnfolder]: 1758/3797 cut-off events. [2022-11-20 11:09:42,942 INFO L131 PetriNetUnfolder]: For 6786/6786 co-relation queries the response was YES. [2022-11-20 11:09:42,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10878 conditions, 3797 events. 1758/3797 cut-off events. For 6786/6786 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 25666 event pairs, 225 based on Foata normal form. 1/3736 useless extension candidates. Maximal degree in co-relation 10850. Up to 726 conditions per place. [2022-11-20 11:09:42,977 INFO L137 encePairwiseOnDemand]: 165/195 looper letters, 318 selfloop transitions, 141 changer transitions 0/524 dead transitions. [2022-11-20 11:09:42,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 524 transitions, 3351 flow [2022-11-20 11:09:42,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-11-20 11:09:42,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-11-20 11:09:42,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 5283 transitions. [2022-11-20 11:09:42,988 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49258741258741257 [2022-11-20 11:09:42,988 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 5283 transitions. [2022-11-20 11:09:42,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 5283 transitions. [2022-11-20 11:09:42,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:09:42,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 5283 transitions. [2022-11-20 11:09:43,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 96.05454545454545) internal successors, (5283), 55 states have internal predecessors, (5283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:43,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 195.0) internal successors, (10920), 56 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:43,020 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 195.0) internal successors, (10920), 56 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:43,021 INFO L175 Difference]: Start difference. First operand has 233 places, 245 transitions, 1058 flow. Second operand 55 states and 5283 transitions. [2022-11-20 11:09:43,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 524 transitions, 3351 flow [2022-11-20 11:09:43,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 524 transitions, 3139 flow, removed 36 selfloop flow, removed 11 redundant places. [2022-11-20 11:09:43,072 INFO L231 Difference]: Finished difference. Result has 298 places, 290 transitions, 1742 flow [2022-11-20 11:09:43,073 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=1742, PETRI_PLACES=298, PETRI_TRANSITIONS=290} [2022-11-20 11:09:43,076 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 117 predicate places. [2022-11-20 11:09:43,076 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 290 transitions, 1742 flow [2022-11-20 11:09:43,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 91.83333333333333) internal successors, (2204), 24 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:43,077 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:09:43,078 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:43,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:09:43,078 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-20 11:09:43,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:43,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1184087724, now seen corresponding path program 4 times [2022-11-20 11:09:43,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:43,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701777057] [2022-11-20 11:09:43,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:43,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:45,427 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 11:09:45,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:45,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701777057] [2022-11-20 11:09:45,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701777057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:45,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:45,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:09:45,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113084087] [2022-11-20 11:09:45,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:45,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:09:45,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:45,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:09:45,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:09:45,431 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 195 [2022-11-20 11:09:45,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 290 transitions, 1742 flow. Second operand has 19 states, 19 states have (on average 99.21052631578948) internal successors, (1885), 19 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:45,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:09:45,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 195 [2022-11-20 11:09:45,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:09:48,197 INFO L130 PetriNetUnfolder]: 1288/3330 cut-off events. [2022-11-20 11:09:48,198 INFO L131 PetriNetUnfolder]: For 8352/8361 co-relation queries the response was YES. [2022-11-20 11:09:48,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9726 conditions, 3330 events. 1288/3330 cut-off events. For 8352/8361 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 24976 event pairs, 127 based on Foata normal form. 6/3263 useless extension candidates. Maximal degree in co-relation 9676. Up to 953 conditions per place. [2022-11-20 11:09:48,233 INFO L137 encePairwiseOnDemand]: 169/195 looper letters, 197 selfloop transitions, 78 changer transitions 0/416 dead transitions. [2022-11-20 11:09:48,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 416 transitions, 2905 flow [2022-11-20 11:09:48,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 11:09:48,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-20 11:09:48,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2284 transitions. [2022-11-20 11:09:48,240 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5324009324009324 [2022-11-20 11:09:48,240 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2284 transitions. [2022-11-20 11:09:48,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2284 transitions. [2022-11-20 11:09:48,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:09:48,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2284 transitions. [2022-11-20 11:09:48,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 103.81818181818181) internal successors, (2284), 22 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:48,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 195.0) internal successors, (4485), 23 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:48,256 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 195.0) internal successors, (4485), 23 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:48,257 INFO L175 Difference]: Start difference. First operand has 298 places, 290 transitions, 1742 flow. Second operand 22 states and 2284 transitions. [2022-11-20 11:09:48,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 416 transitions, 2905 flow [2022-11-20 11:09:48,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 416 transitions, 2711 flow, removed 47 selfloop flow, removed 26 redundant places. [2022-11-20 11:09:48,325 INFO L231 Difference]: Finished difference. Result has 303 places, 321 transitions, 2097 flow [2022-11-20 11:09:48,325 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=1559, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2097, PETRI_PLACES=303, PETRI_TRANSITIONS=321} [2022-11-20 11:09:48,326 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 122 predicate places. [2022-11-20 11:09:48,326 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 321 transitions, 2097 flow [2022-11-20 11:09:48,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 99.21052631578948) internal successors, (1885), 19 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:48,327 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:09:48,327 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:48,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:09:48,328 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-20 11:09:48,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:48,329 INFO L85 PathProgramCache]: Analyzing trace with hash 367794626, now seen corresponding path program 5 times [2022-11-20 11:09:48,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:48,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457661365] [2022-11-20 11:09:48,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:48,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:50,517 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 11:09:50,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:50,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457661365] [2022-11-20 11:09:50,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457661365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:50,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:50,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:09:50,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764562960] [2022-11-20 11:09:50,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:50,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:09:50,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:50,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:09:50,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:09:50,522 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 195 [2022-11-20 11:09:50,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 321 transitions, 2097 flow. Second operand has 19 states, 19 states have (on average 99.21052631578948) internal successors, (1885), 19 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:50,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:09:50,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 195 [2022-11-20 11:09:50,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:09:53,006 INFO L130 PetriNetUnfolder]: 1529/4090 cut-off events. [2022-11-20 11:09:53,006 INFO L131 PetriNetUnfolder]: For 12203/12255 co-relation queries the response was YES. [2022-11-20 11:09:53,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12311 conditions, 4090 events. 1529/4090 cut-off events. For 12203/12255 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 32442 event pairs, 534 based on Foata normal form. 20/4009 useless extension candidates. Maximal degree in co-relation 12250. Up to 1650 conditions per place. [2022-11-20 11:09:53,047 INFO L137 encePairwiseOnDemand]: 170/195 looper letters, 227 selfloop transitions, 84 changer transitions 0/452 dead transitions. [2022-11-20 11:09:53,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 452 transitions, 3440 flow [2022-11-20 11:09:53,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:09:53,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 11:09:53,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2167 transitions. [2022-11-20 11:09:53,054 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5291819291819292 [2022-11-20 11:09:53,054 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2167 transitions. [2022-11-20 11:09:53,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2167 transitions. [2022-11-20 11:09:53,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:09:53,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2167 transitions. [2022-11-20 11:09:53,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 103.19047619047619) internal successors, (2167), 21 states have internal predecessors, (2167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:53,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 195.0) internal successors, (4290), 22 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:53,068 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 195.0) internal successors, (4290), 22 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:53,069 INFO L175 Difference]: Start difference. First operand has 303 places, 321 transitions, 2097 flow. Second operand 21 states and 2167 transitions. [2022-11-20 11:09:53,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 452 transitions, 3440 flow [2022-11-20 11:09:53,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 452 transitions, 3313 flow, removed 30 selfloop flow, removed 9 redundant places. [2022-11-20 11:09:53,178 INFO L231 Difference]: Finished difference. Result has 326 places, 357 transitions, 2585 flow [2022-11-20 11:09:53,179 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=1998, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2585, PETRI_PLACES=326, PETRI_TRANSITIONS=357} [2022-11-20 11:09:53,180 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 145 predicate places. [2022-11-20 11:09:53,180 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 357 transitions, 2585 flow [2022-11-20 11:09:53,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 99.21052631578948) internal successors, (1885), 19 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:53,181 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:09:53,182 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:53,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:09:53,182 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-20 11:09:53,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:53,183 INFO L85 PathProgramCache]: Analyzing trace with hash -742991826, now seen corresponding path program 6 times [2022-11-20 11:09:53,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:53,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120969760] [2022-11-20 11:09:53,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:53,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:53,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:54,329 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 11:09:54,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:54,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120969760] [2022-11-20 11:09:54,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120969760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:54,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:54,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 11:09:54,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184311481] [2022-11-20 11:09:54,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:54,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:09:54,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:54,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:09:54,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:09:54,333 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 195 [2022-11-20 11:09:54,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 357 transitions, 2585 flow. Second operand has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:54,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:09:54,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 195 [2022-11-20 11:09:54,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:09:56,096 INFO L130 PetriNetUnfolder]: 750/2586 cut-off events. [2022-11-20 11:09:56,096 INFO L131 PetriNetUnfolder]: For 14153/14682 co-relation queries the response was YES. [2022-11-20 11:09:56,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8852 conditions, 2586 events. 750/2586 cut-off events. For 14153/14682 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 20156 event pairs, 154 based on Foata normal form. 46/2562 useless extension candidates. Maximal degree in co-relation 8780. Up to 530 conditions per place. [2022-11-20 11:09:56,129 INFO L137 encePairwiseOnDemand]: 181/195 looper letters, 168 selfloop transitions, 94 changer transitions 0/437 dead transitions. [2022-11-20 11:09:56,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 437 transitions, 3586 flow [2022-11-20 11:09:56,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:09:56,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 11:09:56,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2140 transitions. [2022-11-20 11:09:56,135 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8441814595660749 [2022-11-20 11:09:56,135 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2140 transitions. [2022-11-20 11:09:56,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2140 transitions. [2022-11-20 11:09:56,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:09:56,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2140 transitions. [2022-11-20 11:09:56,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 164.6153846153846) internal successors, (2140), 13 states have internal predecessors, (2140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:56,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:56,148 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:56,149 INFO L175 Difference]: Start difference. First operand has 326 places, 357 transitions, 2585 flow. Second operand 13 states and 2140 transitions. [2022-11-20 11:09:56,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 437 transitions, 3586 flow [2022-11-20 11:09:56,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 437 transitions, 3466 flow, removed 50 selfloop flow, removed 6 redundant places. [2022-11-20 11:09:56,252 INFO L231 Difference]: Finished difference. Result has 338 places, 376 transitions, 2860 flow [2022-11-20 11:09:56,253 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=2484, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2860, PETRI_PLACES=338, PETRI_TRANSITIONS=376} [2022-11-20 11:09:56,254 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 157 predicate places. [2022-11-20 11:09:56,254 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 376 transitions, 2860 flow [2022-11-20 11:09:56,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:56,255 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:09:56,256 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:56,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:09:56,256 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-20 11:09:56,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:56,257 INFO L85 PathProgramCache]: Analyzing trace with hash -134836952, now seen corresponding path program 7 times [2022-11-20 11:09:56,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:56,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864134115] [2022-11-20 11:09:56,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:56,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:58,104 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 11:09:58,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:58,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864134115] [2022-11-20 11:09:58,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864134115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:58,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:58,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:09:58,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771592193] [2022-11-20 11:09:58,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:58,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:09:58,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:58,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:09:58,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:09:58,110 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 195 [2022-11-20 11:09:58,113 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 376 transitions, 2860 flow. Second operand has 19 states, 19 states have (on average 99.21052631578948) internal successors, (1885), 19 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:58,113 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:09:58,113 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 195 [2022-11-20 11:09:58,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:10:01,399 INFO L130 PetriNetUnfolder]: 1911/4925 cut-off events. [2022-11-20 11:10:01,399 INFO L131 PetriNetUnfolder]: For 21785/21842 co-relation queries the response was YES. [2022-11-20 11:10:01,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17079 conditions, 4925 events. 1911/4925 cut-off events. For 21785/21842 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 40211 event pairs, 285 based on Foata normal form. 18/4844 useless extension candidates. Maximal degree in co-relation 17001. Up to 1399 conditions per place. [2022-11-20 11:10:01,466 INFO L137 encePairwiseOnDemand]: 169/195 looper letters, 261 selfloop transitions, 101 changer transitions 0/509 dead transitions. [2022-11-20 11:10:01,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 509 transitions, 4427 flow [2022-11-20 11:10:01,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 11:10:01,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-20 11:10:01,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2284 transitions. [2022-11-20 11:10:01,472 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5324009324009324 [2022-11-20 11:10:01,473 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2284 transitions. [2022-11-20 11:10:01,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2284 transitions. [2022-11-20 11:10:01,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:10:01,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2284 transitions. [2022-11-20 11:10:01,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 103.81818181818181) internal successors, (2284), 22 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:01,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 195.0) internal successors, (4485), 23 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:01,487 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 195.0) internal successors, (4485), 23 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:01,487 INFO L175 Difference]: Start difference. First operand has 338 places, 376 transitions, 2860 flow. Second operand 22 states and 2284 transitions. [2022-11-20 11:10:01,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 509 transitions, 4427 flow [2022-11-20 11:10:01,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 509 transitions, 4289 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-11-20 11:10:01,735 INFO L231 Difference]: Finished difference. Result has 365 places, 414 transitions, 3552 flow [2022-11-20 11:10:01,736 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=2722, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3552, PETRI_PLACES=365, PETRI_TRANSITIONS=414} [2022-11-20 11:10:01,737 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 184 predicate places. [2022-11-20 11:10:01,737 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 414 transitions, 3552 flow [2022-11-20 11:10:01,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 99.21052631578948) internal successors, (1885), 19 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:01,738 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:10:01,738 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:01,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:10:01,739 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-20 11:10:01,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:01,740 INFO L85 PathProgramCache]: Analyzing trace with hash 947451330, now seen corresponding path program 8 times [2022-11-20 11:10:01,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:01,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127674958] [2022-11-20 11:10:01,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:01,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:03,642 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 11:10:03,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:03,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127674958] [2022-11-20 11:10:03,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127674958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:03,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:03,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:10:03,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530056152] [2022-11-20 11:10:03,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:03,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:10:03,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:03,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:10:03,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:10:03,648 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 195 [2022-11-20 11:10:03,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 414 transitions, 3552 flow. Second operand has 19 states, 19 states have (on average 99.21052631578948) internal successors, (1885), 19 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:03,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:10:03,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 195 [2022-11-20 11:10:03,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:10:08,214 INFO L130 PetriNetUnfolder]: 2543/7606 cut-off events. [2022-11-20 11:10:08,214 INFO L131 PetriNetUnfolder]: For 51892/52531 co-relation queries the response was YES. [2022-11-20 11:10:08,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26853 conditions, 7606 events. 2543/7606 cut-off events. For 51892/52531 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 73372 event pairs, 556 based on Foata normal form. 67/7420 useless extension candidates. Maximal degree in co-relation 26764. Up to 1078 conditions per place. [2022-11-20 11:10:08,321 INFO L137 encePairwiseOnDemand]: 167/195 looper letters, 308 selfloop transitions, 190 changer transitions 0/656 dead transitions. [2022-11-20 11:10:08,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 656 transitions, 7103 flow [2022-11-20 11:10:08,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 11:10:08,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-20 11:10:08,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2284 transitions. [2022-11-20 11:10:08,327 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5324009324009324 [2022-11-20 11:10:08,327 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2284 transitions. [2022-11-20 11:10:08,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2284 transitions. [2022-11-20 11:10:08,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:10:08,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2284 transitions. [2022-11-20 11:10:08,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 103.81818181818181) internal successors, (2284), 22 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:08,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 195.0) internal successors, (4485), 23 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:08,341 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 195.0) internal successors, (4485), 23 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:08,341 INFO L175 Difference]: Start difference. First operand has 365 places, 414 transitions, 3552 flow. Second operand 22 states and 2284 transitions. [2022-11-20 11:10:08,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 656 transitions, 7103 flow [2022-11-20 11:10:08,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 656 transitions, 6846 flow, removed 108 selfloop flow, removed 6 redundant places. [2022-11-20 11:10:08,702 INFO L231 Difference]: Finished difference. Result has 388 places, 501 transitions, 5259 flow [2022-11-20 11:10:08,703 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=3369, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=5259, PETRI_PLACES=388, PETRI_TRANSITIONS=501} [2022-11-20 11:10:08,704 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 207 predicate places. [2022-11-20 11:10:08,705 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 501 transitions, 5259 flow [2022-11-20 11:10:08,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 99.21052631578948) internal successors, (1885), 19 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:08,705 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:10:08,706 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:08,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:10:08,706 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-20 11:10:08,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:08,707 INFO L85 PathProgramCache]: Analyzing trace with hash 116277022, now seen corresponding path program 9 times [2022-11-20 11:10:08,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:08,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871411010] [2022-11-20 11:10:08,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:08,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:10,014 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 11:10:10,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:10,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871411010] [2022-11-20 11:10:10,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871411010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:10,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:10,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 11:10:10,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934370649] [2022-11-20 11:10:10,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:10,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:10:10,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:10,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:10:10,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:10:10,020 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 195 [2022-11-20 11:10:10,024 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 501 transitions, 5259 flow. Second operand has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:10,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:10:10,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 195 [2022-11-20 11:10:10,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:10:13,871 INFO L130 PetriNetUnfolder]: 1606/6657 cut-off events. [2022-11-20 11:10:13,871 INFO L131 PetriNetUnfolder]: For 68341/73614 co-relation queries the response was YES. [2022-11-20 11:10:13,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25343 conditions, 6657 events. 1606/6657 cut-off events. For 68341/73614 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 69418 event pairs, 629 based on Foata normal form. 84/6592 useless extension candidates. Maximal degree in co-relation 25245. Up to 1748 conditions per place. [2022-11-20 11:10:13,967 INFO L137 encePairwiseOnDemand]: 181/195 looper letters, 259 selfloop transitions, 97 changer transitions 0/629 dead transitions. [2022-11-20 11:10:13,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 629 transitions, 7032 flow [2022-11-20 11:10:13,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:10:13,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 11:10:13,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2151 transitions. [2022-11-20 11:10:13,971 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8485207100591716 [2022-11-20 11:10:13,972 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2151 transitions. [2022-11-20 11:10:13,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2151 transitions. [2022-11-20 11:10:13,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:10:13,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2151 transitions. [2022-11-20 11:10:13,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 165.46153846153845) internal successors, (2151), 13 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:13,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:13,982 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:13,983 INFO L175 Difference]: Start difference. First operand has 388 places, 501 transitions, 5259 flow. Second operand 13 states and 2151 transitions. [2022-11-20 11:10:13,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 629 transitions, 7032 flow [2022-11-20 11:10:14,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 629 transitions, 6717 flow, removed 87 selfloop flow, removed 9 redundant places. [2022-11-20 11:10:14,504 INFO L231 Difference]: Finished difference. Result has 397 places, 523 transitions, 5436 flow [2022-11-20 11:10:14,505 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=4944, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5436, PETRI_PLACES=397, PETRI_TRANSITIONS=523} [2022-11-20 11:10:14,506 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 216 predicate places. [2022-11-20 11:10:14,506 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 523 transitions, 5436 flow [2022-11-20 11:10:14,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:14,507 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:10:14,507 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:14,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:10:14,508 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-20 11:10:14,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:14,508 INFO L85 PathProgramCache]: Analyzing trace with hash -2047692766, now seen corresponding path program 10 times [2022-11-20 11:10:14,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:14,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563164436] [2022-11-20 11:10:14,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:14,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:15,658 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 11:10:15,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:15,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563164436] [2022-11-20 11:10:15,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563164436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:15,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:15,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 11:10:15,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331027625] [2022-11-20 11:10:15,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:15,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:10:15,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:15,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:10:15,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:10:15,664 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 195 [2022-11-20 11:10:15,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 523 transitions, 5436 flow. Second operand has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:15,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:10:15,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 195 [2022-11-20 11:10:15,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:10:19,490 INFO L130 PetriNetUnfolder]: 1824/7246 cut-off events. [2022-11-20 11:10:19,491 INFO L131 PetriNetUnfolder]: For 64465/76880 co-relation queries the response was YES. [2022-11-20 11:10:19,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28784 conditions, 7246 events. 1824/7246 cut-off events. For 64465/76880 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 76184 event pairs, 628 based on Foata normal form. 100/7162 useless extension candidates. Maximal degree in co-relation 28679. Up to 1748 conditions per place. [2022-11-20 11:10:19,606 INFO L137 encePairwiseOnDemand]: 181/195 looper letters, 263 selfloop transitions, 105 changer transitions 0/641 dead transitions. [2022-11-20 11:10:19,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 641 transitions, 7218 flow [2022-11-20 11:10:19,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:10:19,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 11:10:19,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2150 transitions. [2022-11-20 11:10:19,612 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8481262327416174 [2022-11-20 11:10:19,612 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2150 transitions. [2022-11-20 11:10:19,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2150 transitions. [2022-11-20 11:10:19,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:10:19,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2150 transitions. [2022-11-20 11:10:19,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 165.3846153846154) internal successors, (2150), 13 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:19,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:19,626 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:19,626 INFO L175 Difference]: Start difference. First operand has 397 places, 523 transitions, 5436 flow. Second operand 13 states and 2150 transitions. [2022-11-20 11:10:19,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 641 transitions, 7218 flow [2022-11-20 11:10:20,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 641 transitions, 7048 flow, removed 21 selfloop flow, removed 5 redundant places. [2022-11-20 11:10:20,102 INFO L231 Difference]: Finished difference. Result has 410 places, 543 transitions, 5834 flow [2022-11-20 11:10:20,103 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=5270, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5834, PETRI_PLACES=410, PETRI_TRANSITIONS=543} [2022-11-20 11:10:20,104 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 229 predicate places. [2022-11-20 11:10:20,104 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 543 transitions, 5834 flow [2022-11-20 11:10:20,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:20,105 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:10:20,105 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:20,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:10:20,106 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-20 11:10:20,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:20,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1779055120, now seen corresponding path program 11 times [2022-11-20 11:10:20,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:20,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664147072] [2022-11-20 11:10:20,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:20,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:21,427 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 11:10:21,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:21,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664147072] [2022-11-20 11:10:21,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664147072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:21,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:21,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 11:10:21,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956119619] [2022-11-20 11:10:21,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:21,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:10:21,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:21,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:10:21,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:10:21,435 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 195 [2022-11-20 11:10:21,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 543 transitions, 5834 flow. Second operand has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:21,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:10:21,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 195 [2022-11-20 11:10:21,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:10:25,188 INFO L130 PetriNetUnfolder]: 1682/6870 cut-off events. [2022-11-20 11:10:25,188 INFO L131 PetriNetUnfolder]: For 66179/77010 co-relation queries the response was YES. [2022-11-20 11:10:25,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28148 conditions, 6870 events. 1682/6870 cut-off events. For 66179/77010 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 72071 event pairs, 616 based on Foata normal form. 107/6808 useless extension candidates. Maximal degree in co-relation 28037. Up to 1748 conditions per place. [2022-11-20 11:10:25,309 INFO L137 encePairwiseOnDemand]: 181/195 looper letters, 276 selfloop transitions, 104 changer transitions 0/653 dead transitions. [2022-11-20 11:10:25,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 653 transitions, 7637 flow [2022-11-20 11:10:25,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:10:25,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 11:10:25,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2151 transitions. [2022-11-20 11:10:25,315 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8485207100591716 [2022-11-20 11:10:25,315 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2151 transitions. [2022-11-20 11:10:25,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2151 transitions. [2022-11-20 11:10:25,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:10:25,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2151 transitions. [2022-11-20 11:10:25,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 165.46153846153845) internal successors, (2151), 13 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:25,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:25,330 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:25,330 INFO L175 Difference]: Start difference. First operand has 410 places, 543 transitions, 5834 flow. Second operand 13 states and 2151 transitions. [2022-11-20 11:10:25,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 653 transitions, 7637 flow [2022-11-20 11:10:25,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 653 transitions, 7433 flow, removed 28 selfloop flow, removed 6 redundant places. [2022-11-20 11:10:25,739 INFO L231 Difference]: Finished difference. Result has 421 places, 558 transitions, 6163 flow [2022-11-20 11:10:25,740 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=5602, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6163, PETRI_PLACES=421, PETRI_TRANSITIONS=558} [2022-11-20 11:10:25,741 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 240 predicate places. [2022-11-20 11:10:25,741 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 558 transitions, 6163 flow [2022-11-20 11:10:25,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:25,742 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:10:25,742 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:25,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 11:10:25,743 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-20 11:10:25,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:25,743 INFO L85 PathProgramCache]: Analyzing trace with hash 180859202, now seen corresponding path program 12 times [2022-11-20 11:10:25,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:25,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056982473] [2022-11-20 11:10:25,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:25,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:25,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:26,856 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 11:10:26,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:26,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056982473] [2022-11-20 11:10:26,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056982473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:26,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:26,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 11:10:26,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245980282] [2022-11-20 11:10:26,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:26,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:10:26,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:26,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:10:26,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:10:26,860 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 195 [2022-11-20 11:10:26,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 558 transitions, 6163 flow. Second operand has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:26,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:10:26,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 195 [2022-11-20 11:10:26,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:10:30,715 INFO L130 PetriNetUnfolder]: 1663/6969 cut-off events. [2022-11-20 11:10:30,715 INFO L131 PetriNetUnfolder]: For 72321/84888 co-relation queries the response was YES. [2022-11-20 11:10:30,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28916 conditions, 6969 events. 1663/6969 cut-off events. For 72321/84888 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 73781 event pairs, 529 based on Foata normal form. 98/6905 useless extension candidates. Maximal degree in co-relation 28800. Up to 1748 conditions per place. [2022-11-20 11:10:30,842 INFO L137 encePairwiseOnDemand]: 181/195 looper letters, 236 selfloop transitions, 144 changer transitions 0/653 dead transitions. [2022-11-20 11:10:30,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 653 transitions, 7752 flow [2022-11-20 11:10:30,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:10:30,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 11:10:30,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2151 transitions. [2022-11-20 11:10:30,848 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8485207100591716 [2022-11-20 11:10:30,849 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2151 transitions. [2022-11-20 11:10:30,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2151 transitions. [2022-11-20 11:10:30,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:10:30,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2151 transitions. [2022-11-20 11:10:30,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 165.46153846153845) internal successors, (2151), 13 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:30,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:30,863 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:30,863 INFO L175 Difference]: Start difference. First operand has 421 places, 558 transitions, 6163 flow. Second operand 13 states and 2151 transitions. [2022-11-20 11:10:30,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 653 transitions, 7752 flow [2022-11-20 11:10:31,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 653 transitions, 7498 flow, removed 49 selfloop flow, removed 7 redundant places. [2022-11-20 11:10:31,430 INFO L231 Difference]: Finished difference. Result has 430 places, 571 transitions, 6556 flow [2022-11-20 11:10:31,431 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=5909, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6556, PETRI_PLACES=430, PETRI_TRANSITIONS=571} [2022-11-20 11:10:31,431 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 249 predicate places. [2022-11-20 11:10:31,432 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 571 transitions, 6556 flow [2022-11-20 11:10:31,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:31,432 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:10:31,432 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:31,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 11:10:31,433 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-20 11:10:31,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:31,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1483633024, now seen corresponding path program 13 times [2022-11-20 11:10:31,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:31,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703977174] [2022-11-20 11:10:31,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:31,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:32,596 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 11:10:32,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:32,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703977174] [2022-11-20 11:10:32,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703977174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:32,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:32,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 11:10:32,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422263243] [2022-11-20 11:10:32,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:32,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:10:32,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:32,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:10:32,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:10:32,600 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 195 [2022-11-20 11:10:32,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 571 transitions, 6556 flow. Second operand has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:32,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:10:32,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 195 [2022-11-20 11:10:32,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:10:36,032 INFO L130 PetriNetUnfolder]: 1481/6116 cut-off events. [2022-11-20 11:10:36,032 INFO L131 PetriNetUnfolder]: For 70322/81452 co-relation queries the response was YES. [2022-11-20 11:10:36,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26659 conditions, 6116 events. 1481/6116 cut-off events. For 70322/81452 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 62304 event pairs, 536 based on Foata normal form. 78/6037 useless extension candidates. Maximal degree in co-relation 26539. Up to 1748 conditions per place. [2022-11-20 11:10:36,123 INFO L137 encePairwiseOnDemand]: 182/195 looper letters, 244 selfloop transitions, 123 changer transitions 0/640 dead transitions. [2022-11-20 11:10:36,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 640 transitions, 7870 flow [2022-11-20 11:10:36,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:10:36,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 11:10:36,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2144 transitions. [2022-11-20 11:10:36,127 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8457593688362919 [2022-11-20 11:10:36,127 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2144 transitions. [2022-11-20 11:10:36,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2144 transitions. [2022-11-20 11:10:36,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:10:36,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2144 transitions. [2022-11-20 11:10:36,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 164.92307692307693) internal successors, (2144), 13 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:36,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:36,136 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:36,137 INFO L175 Difference]: Start difference. First operand has 430 places, 571 transitions, 6556 flow. Second operand 13 states and 2144 transitions. [2022-11-20 11:10:36,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 640 transitions, 7870 flow [2022-11-20 11:10:36,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 640 transitions, 7598 flow, removed 49 selfloop flow, removed 8 redundant places. [2022-11-20 11:10:36,598 INFO L231 Difference]: Finished difference. Result has 437 places, 577 transitions, 6734 flow [2022-11-20 11:10:36,599 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=6264, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6734, PETRI_PLACES=437, PETRI_TRANSITIONS=577} [2022-11-20 11:10:36,599 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 256 predicate places. [2022-11-20 11:10:36,599 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 577 transitions, 6734 flow [2022-11-20 11:10:36,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:36,600 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:10:36,600 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:10:36,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 11:10:36,600 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-20 11:10:36,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:36,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1912337188, now seen corresponding path program 14 times [2022-11-20 11:10:36,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:36,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683470792] [2022-11-20 11:10:36,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:36,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:38,302 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 11:10:38,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:38,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683470792] [2022-11-20 11:10:38,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683470792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:38,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:38,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 11:10:38,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843155690] [2022-11-20 11:10:38,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:38,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:10:38,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:38,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:10:38,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:10:38,309 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 195 [2022-11-20 11:10:38,312 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 577 transitions, 6734 flow. Second operand has 15 states, 15 states have (on average 149.33333333333334) internal successors, (2240), 15 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:38,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:10:38,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 195 [2022-11-20 11:10:38,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:10:44,035 INFO L130 PetriNetUnfolder]: 2608/10175 cut-off events. [2022-11-20 11:10:44,036 INFO L131 PetriNetUnfolder]: For 157481/223580 co-relation queries the response was YES. [2022-11-20 11:10:44,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42963 conditions, 10175 events. 2608/10175 cut-off events. For 157481/223580 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 116072 event pairs, 1140 based on Foata normal form. 263/10159 useless extension candidates. Maximal degree in co-relation 42840. Up to 2059 conditions per place. [2022-11-20 11:10:44,263 INFO L137 encePairwiseOnDemand]: 179/195 looper letters, 480 selfloop transitions, 117 changer transitions 0/827 dead transitions. [2022-11-20 11:10:44,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 827 transitions, 11356 flow [2022-11-20 11:10:44,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:10:44,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 11:10:44,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2649 transitions. [2022-11-20 11:10:44,267 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7990950226244344 [2022-11-20 11:10:44,267 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2649 transitions. [2022-11-20 11:10:44,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2649 transitions. [2022-11-20 11:10:44,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:10:44,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2649 transitions. [2022-11-20 11:10:44,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 155.8235294117647) internal successors, (2649), 17 states have internal predecessors, (2649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:44,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 195.0) internal successors, (3510), 18 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:44,277 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 195.0) internal successors, (3510), 18 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:44,278 INFO L175 Difference]: Start difference. First operand has 437 places, 577 transitions, 6734 flow. Second operand 17 states and 2649 transitions. [2022-11-20 11:10:44,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 827 transitions, 11356 flow [2022-11-20 11:10:45,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 827 transitions, 11086 flow, removed 21 selfloop flow, removed 9 redundant places. [2022-11-20 11:10:45,028 INFO L231 Difference]: Finished difference. Result has 451 places, 625 transitions, 7418 flow [2022-11-20 11:10:45,029 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=6486, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7418, PETRI_PLACES=451, PETRI_TRANSITIONS=625} [2022-11-20 11:10:45,029 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 270 predicate places. [2022-11-20 11:10:45,029 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 625 transitions, 7418 flow [2022-11-20 11:10:45,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 149.33333333333334) internal successors, (2240), 15 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:45,030 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:10:45,030 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:45,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 11:10:45,030 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-20 11:10:45,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:45,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1083972018, now seen corresponding path program 15 times [2022-11-20 11:10:45,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:45,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248651960] [2022-11-20 11:10:45,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:45,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:46,316 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 11:10:46,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:46,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248651960] [2022-11-20 11:10:46,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248651960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:46,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:46,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 11:10:46,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790156371] [2022-11-20 11:10:46,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:46,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:10:46,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:46,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:10:46,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:10:46,321 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 195 [2022-11-20 11:10:46,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 625 transitions, 7418 flow. Second operand has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:46,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:10:46,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 195 [2022-11-20 11:10:46,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:10:52,854 INFO L130 PetriNetUnfolder]: 2858/11898 cut-off events. [2022-11-20 11:10:52,855 INFO L131 PetriNetUnfolder]: For 115262/139586 co-relation queries the response was YES. [2022-11-20 11:10:53,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50092 conditions, 11898 events. 2858/11898 cut-off events. For 115262/139586 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 140752 event pairs, 1222 based on Foata normal form. 117/11700 useless extension candidates. Maximal degree in co-relation 49962. Up to 1890 conditions per place. [2022-11-20 11:10:53,156 INFO L137 encePairwiseOnDemand]: 181/195 looper letters, 431 selfloop transitions, 94 changer transitions 0/813 dead transitions. [2022-11-20 11:10:53,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 813 transitions, 10300 flow [2022-11-20 11:10:53,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:10:53,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 11:10:53,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2167 transitions. [2022-11-20 11:10:53,161 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8548323471400394 [2022-11-20 11:10:53,161 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2167 transitions. [2022-11-20 11:10:53,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2167 transitions. [2022-11-20 11:10:53,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:10:53,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2167 transitions. [2022-11-20 11:10:53,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 166.69230769230768) internal successors, (2167), 13 states have internal predecessors, (2167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:53,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:53,172 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:53,173 INFO L175 Difference]: Start difference. First operand has 451 places, 625 transitions, 7418 flow. Second operand 13 states and 2167 transitions. [2022-11-20 11:10:53,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 813 transitions, 10300 flow [2022-11-20 11:10:54,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 813 transitions, 10104 flow, removed 51 selfloop flow, removed 5 redundant places. [2022-11-20 11:10:54,232 INFO L231 Difference]: Finished difference. Result has 464 places, 645 transitions, 7803 flow [2022-11-20 11:10:54,233 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=7240, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7803, PETRI_PLACES=464, PETRI_TRANSITIONS=645} [2022-11-20 11:10:54,233 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 283 predicate places. [2022-11-20 11:10:54,234 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 645 transitions, 7803 flow [2022-11-20 11:10:54,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:54,234 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:10:54,234 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:54,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 11:10:54,235 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-20 11:10:54,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:54,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1543815610, now seen corresponding path program 16 times [2022-11-20 11:10:54,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:54,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465570515] [2022-11-20 11:10:54,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:54,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:55,607 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 11:10:55,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:55,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465570515] [2022-11-20 11:10:55,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465570515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:55,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:55,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 11:10:55,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490622333] [2022-11-20 11:10:55,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:55,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:10:55,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:55,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:10:55,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:10:55,618 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 195 [2022-11-20 11:10:55,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 645 transitions, 7803 flow. Second operand has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:55,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:10:55,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 195 [2022-11-20 11:10:55,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:11:01,878 INFO L130 PetriNetUnfolder]: 2929/12002 cut-off events. [2022-11-20 11:11:01,878 INFO L131 PetriNetUnfolder]: For 125334/151459 co-relation queries the response was YES. [2022-11-20 11:11:02,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52243 conditions, 12002 events. 2929/12002 cut-off events. For 125334/151459 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 141616 event pairs, 1177 based on Foata normal form. 116/11799 useless extension candidates. Maximal degree in co-relation 52107. Up to 2861 conditions per place. [2022-11-20 11:11:02,203 INFO L137 encePairwiseOnDemand]: 181/195 looper letters, 429 selfloop transitions, 99 changer transitions 0/816 dead transitions. [2022-11-20 11:11:02,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 816 transitions, 10672 flow [2022-11-20 11:11:02,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:11:02,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 11:11:02,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2158 transitions. [2022-11-20 11:11:02,207 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8512820512820513 [2022-11-20 11:11:02,207 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2158 transitions. [2022-11-20 11:11:02,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2158 transitions. [2022-11-20 11:11:02,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:11:02,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2158 transitions. [2022-11-20 11:11:02,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 166.0) internal successors, (2158), 13 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:02,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:02,215 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:02,215 INFO L175 Difference]: Start difference. First operand has 464 places, 645 transitions, 7803 flow. Second operand 13 states and 2158 transitions. [2022-11-20 11:11:02,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 816 transitions, 10672 flow [2022-11-20 11:11:03,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 816 transitions, 10455 flow, removed 45 selfloop flow, removed 6 redundant places. [2022-11-20 11:11:03,575 INFO L231 Difference]: Finished difference. Result has 476 places, 667 transitions, 8235 flow [2022-11-20 11:11:03,576 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=7598, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=549, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8235, PETRI_PLACES=476, PETRI_TRANSITIONS=667} [2022-11-20 11:11:03,576 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 295 predicate places. [2022-11-20 11:11:03,576 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 667 transitions, 8235 flow [2022-11-20 11:11:03,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:03,577 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:11:03,577 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:03,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 11:11:03,577 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-20 11:11:03,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:03,577 INFO L85 PathProgramCache]: Analyzing trace with hash 244208756, now seen corresponding path program 17 times [2022-11-20 11:11:03,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:03,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037184118] [2022-11-20 11:11:03,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:03,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:04,770 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 11:11:04,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:04,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037184118] [2022-11-20 11:11:04,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037184118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:04,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:04,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 11:11:04,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930262160] [2022-11-20 11:11:04,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:04,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:11:04,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:04,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:11:04,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:11:04,775 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 195 [2022-11-20 11:11:04,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 667 transitions, 8235 flow. Second operand has 15 states, 15 states have (on average 149.33333333333334) internal successors, (2240), 15 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:04,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:11:04,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 195 [2022-11-20 11:11:04,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:11:11,837 INFO L130 PetriNetUnfolder]: 3204/12437 cut-off events. [2022-11-20 11:11:11,837 INFO L131 PetriNetUnfolder]: For 217364/359708 co-relation queries the response was YES. [2022-11-20 11:11:12,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57204 conditions, 12437 events. 3204/12437 cut-off events. For 217364/359708 co-relation queries the response was YES. Maximal size of possible extension queue 678. Compared 147601 event pairs, 1581 based on Foata normal form. 281/12357 useless extension candidates. Maximal degree in co-relation 57062. Up to 2059 conditions per place. [2022-11-20 11:11:12,193 INFO L137 encePairwiseOnDemand]: 179/195 looper letters, 555 selfloop transitions, 127 changer transitions 0/912 dead transitions. [2022-11-20 11:11:12,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 912 transitions, 13288 flow [2022-11-20 11:11:12,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:11:12,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 11:11:12,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2807 transitions. [2022-11-20 11:11:12,199 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7997150997150997 [2022-11-20 11:11:12,199 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2807 transitions. [2022-11-20 11:11:12,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2807 transitions. [2022-11-20 11:11:12,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:11:12,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2807 transitions. [2022-11-20 11:11:12,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 155.94444444444446) internal successors, (2807), 18 states have internal predecessors, (2807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:12,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 195.0) internal successors, (3705), 19 states have internal predecessors, (3705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:12,214 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 195.0) internal successors, (3705), 19 states have internal predecessors, (3705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:12,215 INFO L175 Difference]: Start difference. First operand has 476 places, 667 transitions, 8235 flow. Second operand 18 states and 2807 transitions. [2022-11-20 11:11:12,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 912 transitions, 13288 flow