./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-2_2-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c66a520-57bf-434b-a64e-cc04baacb4e0/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c66a520-57bf-434b-a64e-cc04baacb4e0/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c66a520-57bf-434b-a64e-cc04baacb4e0/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c66a520-57bf-434b-a64e-cc04baacb4e0/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-2_2-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c66a520-57bf-434b-a64e-cc04baacb4e0/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c66a520-57bf-434b-a64e-cc04baacb4e0/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dbdd132d1a656eb04120c9309772a096548e218c86a32fc06dd93d5ae981c163 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 17:29:13,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:29:13,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:29:13,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:29:13,783 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:29:13,784 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:29:13,785 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:29:13,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:29:13,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:29:13,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:29:13,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:29:13,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:29:13,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:29:13,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:29:13,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:29:13,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:29:13,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:29:13,796 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:29:13,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:29:13,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:29:13,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:29:13,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:29:13,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:29:13,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:29:13,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:29:13,807 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:29:13,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:29:13,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:29:13,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:29:13,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:29:13,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:29:13,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:29:13,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:29:13,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:29:13,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:29:13,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:29:13,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:29:13,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:29:13,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:29:13,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:29:13,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:29:13,818 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c66a520-57bf-434b-a64e-cc04baacb4e0/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 17:29:13,840 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:29:13,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:29:13,841 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:29:13,841 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:29:13,841 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:29:13,842 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:29:13,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:29:13,843 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:29:13,843 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:29:13,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:29:13,844 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:29:13,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:29:13,844 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:29:13,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:29:13,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:29:13,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:29:13,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:29:13,845 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:29:13,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:29:13,846 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:29:13,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:29:13,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:29:13,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:29:13,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:29:13,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:29:13,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:29:13,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:29:13,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:29:13,848 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:29:13,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:29:13,848 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:29:13,848 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:29:13,848 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:29:13,849 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_2c66a520-57bf-434b-a64e-cc04baacb4e0/bin/uautomizer-vX5HgA9Q3a/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c66a520-57bf-434b-a64e-cc04baacb4e0/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbdd132d1a656eb04120c9309772a096548e218c86a32fc06dd93d5ae981c163 [2022-11-21 17:29:14,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:29:14,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:29:14,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:29:14,150 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:29:14,151 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:29:14,152 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c66a520-57bf-434b-a64e-cc04baacb4e0/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/ldv-races/race-2_2-container_of.i [2022-11-21 17:29:17,322 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:29:17,717 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:29:17,718 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c66a520-57bf-434b-a64e-cc04baacb4e0/sv-benchmarks/c/ldv-races/race-2_2-container_of.i [2022-11-21 17:29:17,744 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c66a520-57bf-434b-a64e-cc04baacb4e0/bin/uautomizer-vX5HgA9Q3a/data/ddab0069e/d73b147140f24af988e553eb34348510/FLAG281b7bfa8 [2022-11-21 17:29:17,764 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c66a520-57bf-434b-a64e-cc04baacb4e0/bin/uautomizer-vX5HgA9Q3a/data/ddab0069e/d73b147140f24af988e553eb34348510 [2022-11-21 17:29:17,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:29:17,770 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:29:17,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:29:17,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:29:17,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:29:17,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:29:17" (1/1) ... [2022-11-21 17:29:17,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fb119e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:17, skipping insertion in model container [2022-11-21 17:29:17,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:29:17" (1/1) ... [2022-11-21 17:29:17,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:29:17,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:29:18,009 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-21 17:29:18,541 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_2c66a520-57bf-434b-a64e-cc04baacb4e0/sv-benchmarks/c/ldv-races/race-2_2-container_of.i[75002,75015] [2022-11-21 17:29:18,590 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:29:18,601 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:29:18,614 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-21 17:29:18,678 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_2c66a520-57bf-434b-a64e-cc04baacb4e0/sv-benchmarks/c/ldv-races/race-2_2-container_of.i[75002,75015] [2022-11-21 17:29:18,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:29:18,818 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:29:18,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:18 WrapperNode [2022-11-21 17:29:18,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:29:18,820 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:29:18,820 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:29:18,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:29:18,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:18" (1/1) ... [2022-11-21 17:29:18,867 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:18" (1/1) ... [2022-11-21 17:29:18,895 INFO L138 Inliner]: procedures = 468, calls = 48, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 115 [2022-11-21 17:29:18,896 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:29:18,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:29:18,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:29:18,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:29:18,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:18" (1/1) ... [2022-11-21 17:29:18,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:18" (1/1) ... [2022-11-21 17:29:18,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:18" (1/1) ... [2022-11-21 17:29:18,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:18" (1/1) ... [2022-11-21 17:29:18,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:18" (1/1) ... [2022-11-21 17:29:18,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:18" (1/1) ... [2022-11-21 17:29:18,937 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:18" (1/1) ... [2022-11-21 17:29:18,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:18" (1/1) ... [2022-11-21 17:29:18,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:29:18,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:29:18,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:29:18,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:29:18,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:18" (1/1) ... [2022-11-21 17:29:18,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:29:19,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c66a520-57bf-434b-a64e-cc04baacb4e0/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:29:19,016 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c66a520-57bf-434b-a64e-cc04baacb4e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:29:19,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c66a520-57bf-434b-a64e-cc04baacb4e0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:29:19,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 17:29:19,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 17:29:19,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 17:29:19,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 17:29:19,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:29:19,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-21 17:29:19,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:29:19,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:29:19,112 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-11-21 17:29:19,112 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-11-21 17:29:19,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 17:29:19,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 17:29:19,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:29:19,115 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 17:29:19,549 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:29:19,551 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:29:19,857 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:29:19,874 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:29:19,874 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 17:29:19,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:29:19 BoogieIcfgContainer [2022-11-21 17:29:19,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:29:19,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:29:19,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:29:19,883 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:29:19,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:29:17" (1/3) ... [2022-11-21 17:29:19,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7f6b7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:29:19, skipping insertion in model container [2022-11-21 17:29:19,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:18" (2/3) ... [2022-11-21 17:29:19,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7f6b7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:29:19, skipping insertion in model container [2022-11-21 17:29:19,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:29:19" (3/3) ... [2022-11-21 17:29:19,886 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_2-container_of.i [2022-11-21 17:29:19,894 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 17:29:19,902 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:29:19,902 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-21 17:29:19,903 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 17:29:19,962 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 17:29:20,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 163 transitions, 342 flow [2022-11-21 17:29:20,074 INFO L130 PetriNetUnfolder]: 8/208 cut-off events. [2022-11-21 17:29:20,074 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 17:29:20,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 208 events. 8/208 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 342 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 113. Up to 4 conditions per place. [2022-11-21 17:29:20,080 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 163 transitions, 342 flow [2022-11-21 17:29:20,085 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 149 transitions, 310 flow [2022-11-21 17:29:20,102 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:29:20,108 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;@2a29ce45, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:29:20,108 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-21 17:29:20,164 INFO L130 PetriNetUnfolder]: 0/104 cut-off events. [2022-11-21 17:29:20,164 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 17:29:20,165 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:29:20,165 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] [2022-11-21 17:29:20,166 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-21 17:29:20,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:20,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1084366875, now seen corresponding path program 1 times [2022-11-21 17:29:20,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:20,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65503140] [2022-11-21 17:29:20,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:20,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:21,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:29:21,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:21,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65503140] [2022-11-21 17:29:21,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65503140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:29:21,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:29:21,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 17:29:21,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020375557] [2022-11-21 17:29:21,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:29:21,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:29:21,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:21,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:29:21,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:29:21,247 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 163 [2022-11-21 17:29:21,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 149 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 102.66666666666667) internal successors, (616), 6 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:21,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:29:21,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 163 [2022-11-21 17:29:21,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:29:22,247 INFO L130 PetriNetUnfolder]: 832/1897 cut-off events. [2022-11-21 17:29:22,247 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-21 17:29:22,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3382 conditions, 1897 events. 832/1897 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 11874 event pairs, 187 based on Foata normal form. 17/1861 useless extension candidates. Maximal degree in co-relation 3159. Up to 598 conditions per place. [2022-11-21 17:29:22,271 INFO L137 encePairwiseOnDemand]: 143/163 looper letters, 98 selfloop transitions, 44 changer transitions 0/233 dead transitions. [2022-11-21 17:29:22,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 233 transitions, 762 flow [2022-11-21 17:29:22,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:29:22,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 17:29:22,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1547 transitions. [2022-11-21 17:29:22,294 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6779141104294478 [2022-11-21 17:29:22,295 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1547 transitions. [2022-11-21 17:29:22,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1547 transitions. [2022-11-21 17:29:22,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:29:22,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1547 transitions. [2022-11-21 17:29:22,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 110.5) internal successors, (1547), 14 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:22,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 163.0) internal successors, (2445), 15 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:22,324 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 163.0) internal successors, (2445), 15 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:22,326 INFO L175 Difference]: Start difference. First operand has 151 places, 149 transitions, 310 flow. Second operand 14 states and 1547 transitions. [2022-11-21 17:29:22,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 233 transitions, 762 flow [2022-11-21 17:29:22,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 233 transitions, 754 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 17:29:22,339 INFO L231 Difference]: Finished difference. Result has 165 places, 182 transitions, 580 flow [2022-11-21 17:29:22,342 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=580, PETRI_PLACES=165, PETRI_TRANSITIONS=182} [2022-11-21 17:29:22,347 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 14 predicate places. [2022-11-21 17:29:22,347 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 182 transitions, 580 flow [2022-11-21 17:29:22,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 102.66666666666667) internal successors, (616), 6 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:22,347 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:29:22,348 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] [2022-11-21 17:29:22,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:29:22,348 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-21 17:29:22,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:22,352 INFO L85 PathProgramCache]: Analyzing trace with hash 234520064, now seen corresponding path program 1 times [2022-11-21 17:29:22,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:22,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644617789] [2022-11-21 17:29:22,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:22,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:22,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:29:22,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:22,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644617789] [2022-11-21 17:29:22,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644617789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:29:22,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:29:22,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 17:29:22,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542060274] [2022-11-21 17:29:22,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:29:22,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:29:22,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:22,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:29:22,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:29:22,838 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 163 [2022-11-21 17:29:22,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 182 transitions, 580 flow. Second operand has 6 states, 6 states have (on average 103.5) internal successors, (621), 6 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:22,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:29:22,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 163 [2022-11-21 17:29:22,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:29:23,793 INFO L130 PetriNetUnfolder]: 1086/2489 cut-off events. [2022-11-21 17:29:23,793 INFO L131 PetriNetUnfolder]: For 10527/10625 co-relation queries the response was YES. [2022-11-21 17:29:23,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8859 conditions, 2489 events. 1086/2489 cut-off events. For 10527/10625 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 17120 event pairs, 249 based on Foata normal form. 47/2500 useless extension candidates. Maximal degree in co-relation 7868. Up to 841 conditions per place. [2022-11-21 17:29:23,820 INFO L137 encePairwiseOnDemand]: 148/163 looper letters, 70 selfloop transitions, 40 changer transitions 72/272 dead transitions. [2022-11-21 17:29:23,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 272 transitions, 1653 flow [2022-11-21 17:29:23,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 17:29:23,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 17:29:23,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1225 transitions. [2022-11-21 17:29:23,825 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.683212493028444 [2022-11-21 17:29:23,825 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1225 transitions. [2022-11-21 17:29:23,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1225 transitions. [2022-11-21 17:29:23,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:29:23,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1225 transitions. [2022-11-21 17:29:23,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 111.36363636363636) internal successors, (1225), 11 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:23,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 163.0) internal successors, (1956), 12 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:23,836 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 163.0) internal successors, (1956), 12 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:23,836 INFO L175 Difference]: Start difference. First operand has 165 places, 182 transitions, 580 flow. Second operand 11 states and 1225 transitions. [2022-11-21 17:29:23,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 272 transitions, 1653 flow [2022-11-21 17:29:23,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 272 transitions, 1653 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 17:29:23,857 INFO L231 Difference]: Finished difference. Result has 183 places, 185 transitions, 880 flow [2022-11-21 17:29:23,857 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=880, PETRI_PLACES=183, PETRI_TRANSITIONS=185} [2022-11-21 17:29:23,858 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 32 predicate places. [2022-11-21 17:29:23,859 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 185 transitions, 880 flow [2022-11-21 17:29:23,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 103.5) internal successors, (621), 6 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:23,860 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:29:23,860 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] [2022-11-21 17:29:23,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:29:23,861 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-21 17:29:23,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:23,861 INFO L85 PathProgramCache]: Analyzing trace with hash -701385000, now seen corresponding path program 1 times [2022-11-21 17:29:23,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:23,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543204556] [2022-11-21 17:29:23,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:23,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:24,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:29:24,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:24,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543204556] [2022-11-21 17:29:24,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543204556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:29:24,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:29:24,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:29:24,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084413293] [2022-11-21 17:29:24,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:29:24,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:29:24,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:24,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:29:24,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:29:24,031 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 163 [2022-11-21 17:29:24,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 185 transitions, 880 flow. Second operand has 5 states, 5 states have (on average 140.2) internal successors, (701), 5 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:24,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:29:24,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 163 [2022-11-21 17:29:24,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:29:24,141 INFO L130 PetriNetUnfolder]: 50/290 cut-off events. [2022-11-21 17:29:24,141 INFO L131 PetriNetUnfolder]: For 1055/1175 co-relation queries the response was YES. [2022-11-21 17:29:24,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 735 conditions, 290 events. 50/290 cut-off events. For 1055/1175 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1093 event pairs, 15 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 716. Up to 31 conditions per place. [2022-11-21 17:29:24,145 INFO L137 encePairwiseOnDemand]: 158/163 looper letters, 19 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2022-11-21 17:29:24,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 124 transitions, 396 flow [2022-11-21 17:29:24,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:29:24,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 17:29:24,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 852 transitions. [2022-11-21 17:29:24,148 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8711656441717791 [2022-11-21 17:29:24,148 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 852 transitions. [2022-11-21 17:29:24,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 852 transitions. [2022-11-21 17:29:24,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:29:24,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 852 transitions. [2022-11-21 17:29:24,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:24,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:24,154 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:24,154 INFO L175 Difference]: Start difference. First operand has 183 places, 185 transitions, 880 flow. Second operand 6 states and 852 transitions. [2022-11-21 17:29:24,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 124 transitions, 396 flow [2022-11-21 17:29:24,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 124 transitions, 306 flow, removed 40 selfloop flow, removed 15 redundant places. [2022-11-21 17:29:24,159 INFO L231 Difference]: Finished difference. Result has 129 places, 116 transitions, 252 flow [2022-11-21 17:29:24,159 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=252, PETRI_PLACES=129, PETRI_TRANSITIONS=116} [2022-11-21 17:29:24,160 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, -22 predicate places. [2022-11-21 17:29:24,160 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 116 transitions, 252 flow [2022-11-21 17:29:24,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 140.2) internal successors, (701), 5 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:24,161 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:29:24,161 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] [2022-11-21 17:29:24,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 17:29:24,162 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-21 17:29:24,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:24,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1541405648, now seen corresponding path program 1 times [2022-11-21 17:29:24,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:24,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980289760] [2022-11-21 17:29:24,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:24,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:28,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:29:28,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:28,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980289760] [2022-11-21 17:29:28,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980289760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:29:28,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:29:28,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-11-21 17:29:28,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783082359] [2022-11-21 17:29:28,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:29:28,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-21 17:29:28,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:28,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-21 17:29:28,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2022-11-21 17:29:28,241 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2022-11-21 17:29:28,244 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 116 transitions, 252 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:28,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:29:28,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2022-11-21 17:29:28,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:29:36,494 INFO L130 PetriNetUnfolder]: 1063/2314 cut-off events. [2022-11-21 17:29:36,495 INFO L131 PetriNetUnfolder]: For 227/227 co-relation queries the response was YES. [2022-11-21 17:29:36,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4682 conditions, 2314 events. 1063/2314 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 13798 event pairs, 49 based on Foata normal form. 0/2274 useless extension candidates. Maximal degree in co-relation 4674. Up to 402 conditions per place. [2022-11-21 17:29:36,508 INFO L137 encePairwiseOnDemand]: 133/163 looper letters, 226 selfloop transitions, 57 changer transitions 0/338 dead transitions. [2022-11-21 17:29:36,508 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 338 transitions, 1347 flow [2022-11-21 17:29:36,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-21 17:29:36,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-21 17:29:36,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3134 transitions. [2022-11-21 17:29:36,517 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5196484828386669 [2022-11-21 17:29:36,517 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3134 transitions. [2022-11-21 17:29:36,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3134 transitions. [2022-11-21 17:29:36,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:29:36,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3134 transitions. [2022-11-21 17:29:36,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 84.70270270270271) internal successors, (3134), 37 states have internal predecessors, (3134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:36,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 163.0) internal successors, (6194), 38 states have internal predecessors, (6194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:36,545 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 163.0) internal successors, (6194), 38 states have internal predecessors, (6194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:36,546 INFO L175 Difference]: Start difference. First operand has 129 places, 116 transitions, 252 flow. Second operand 37 states and 3134 transitions. [2022-11-21 17:29:36,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 338 transitions, 1347 flow [2022-11-21 17:29:36,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 338 transitions, 1340 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 17:29:36,555 INFO L231 Difference]: Finished difference. Result has 178 places, 163 transitions, 620 flow [2022-11-21 17:29:36,556 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=620, PETRI_PLACES=178, PETRI_TRANSITIONS=163} [2022-11-21 17:29:36,558 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 27 predicate places. [2022-11-21 17:29:36,563 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 163 transitions, 620 flow [2022-11-21 17:29:36,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:36,564 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:29:36,564 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] [2022-11-21 17:29:36,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:29:36,565 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-21 17:29:36,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:36,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1708419984, now seen corresponding path program 2 times [2022-11-21 17:29:36,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:36,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855731731] [2022-11-21 17:29:36,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:36,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:38,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:29:38,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:38,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855731731] [2022-11-21 17:29:38,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855731731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:29:38,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:29:38,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 17:29:38,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983172012] [2022-11-21 17:29:38,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:29:38,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 17:29:38,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:38,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 17:29:38,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:29:38,246 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2022-11-21 17:29:38,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 163 transitions, 620 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:38,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:29:38,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2022-11-21 17:29:38,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:29:40,403 INFO L130 PetriNetUnfolder]: 820/2254 cut-off events. [2022-11-21 17:29:40,403 INFO L131 PetriNetUnfolder]: For 2433/2531 co-relation queries the response was YES. [2022-11-21 17:29:40,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5942 conditions, 2254 events. 820/2254 cut-off events. For 2433/2531 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 16201 event pairs, 167 based on Foata normal form. 5/2157 useless extension candidates. Maximal degree in co-relation 5918. Up to 561 conditions per place. [2022-11-21 17:29:40,420 INFO L137 encePairwiseOnDemand]: 141/163 looper letters, 171 selfloop transitions, 43 changer transitions 0/286 dead transitions. [2022-11-21 17:29:40,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 286 transitions, 1638 flow [2022-11-21 17:29:40,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 17:29:40,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-21 17:29:40,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1877 transitions. [2022-11-21 17:29:40,427 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5483494011101373 [2022-11-21 17:29:40,427 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1877 transitions. [2022-11-21 17:29:40,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1877 transitions. [2022-11-21 17:29:40,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:29:40,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1877 transitions. [2022-11-21 17:29:40,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.38095238095238) internal successors, (1877), 21 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:40,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:40,442 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:40,442 INFO L175 Difference]: Start difference. First operand has 178 places, 163 transitions, 620 flow. Second operand 21 states and 1877 transitions. [2022-11-21 17:29:40,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 286 transitions, 1638 flow [2022-11-21 17:29:40,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 286 transitions, 1601 flow, removed 9 selfloop flow, removed 9 redundant places. [2022-11-21 17:29:40,463 INFO L231 Difference]: Finished difference. Result has 198 places, 187 transitions, 916 flow [2022-11-21 17:29:40,464 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=916, PETRI_PLACES=198, PETRI_TRANSITIONS=187} [2022-11-21 17:29:40,467 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 47 predicate places. [2022-11-21 17:29:40,467 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 187 transitions, 916 flow [2022-11-21 17:29:40,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:40,468 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:29:40,468 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] [2022-11-21 17:29:40,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:29:40,469 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-21 17:29:40,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:40,471 INFO L85 PathProgramCache]: Analyzing trace with hash 648824556, now seen corresponding path program 3 times [2022-11-21 17:29:40,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:40,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087706094] [2022-11-21 17:29:40,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:40,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:42,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:29:42,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:42,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087706094] [2022-11-21 17:29:42,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087706094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:29:42,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:29:42,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 17:29:42,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49556311] [2022-11-21 17:29:42,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:29:42,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 17:29:42,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:42,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 17:29:42,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:29:42,169 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2022-11-21 17:29:42,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 187 transitions, 916 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:42,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:29:42,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2022-11-21 17:29:42,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:29:44,340 INFO L130 PetriNetUnfolder]: 1142/3253 cut-off events. [2022-11-21 17:29:44,340 INFO L131 PetriNetUnfolder]: For 4852/4957 co-relation queries the response was YES. [2022-11-21 17:29:44,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9027 conditions, 3253 events. 1142/3253 cut-off events. For 4852/4957 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 26327 event pairs, 362 based on Foata normal form. 5/3122 useless extension candidates. Maximal degree in co-relation 8993. Up to 1140 conditions per place. [2022-11-21 17:29:44,365 INFO L137 encePairwiseOnDemand]: 141/163 looper letters, 187 selfloop transitions, 51 changer transitions 0/310 dead transitions. [2022-11-21 17:29:44,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 310 transitions, 2061 flow [2022-11-21 17:29:44,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 17:29:44,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-21 17:29:44,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1877 transitions. [2022-11-21 17:29:44,371 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5483494011101373 [2022-11-21 17:29:44,371 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1877 transitions. [2022-11-21 17:29:44,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1877 transitions. [2022-11-21 17:29:44,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:29:44,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1877 transitions. [2022-11-21 17:29:44,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.38095238095238) internal successors, (1877), 21 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:44,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:44,384 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:44,384 INFO L175 Difference]: Start difference. First operand has 198 places, 187 transitions, 916 flow. Second operand 21 states and 1877 transitions. [2022-11-21 17:29:44,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 310 transitions, 2061 flow [2022-11-21 17:29:44,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 310 transitions, 2033 flow, removed 5 selfloop flow, removed 7 redundant places. [2022-11-21 17:29:44,415 INFO L231 Difference]: Finished difference. Result has 222 places, 213 transitions, 1304 flow [2022-11-21 17:29:44,416 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1304, PETRI_PLACES=222, PETRI_TRANSITIONS=213} [2022-11-21 17:29:44,416 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 71 predicate places. [2022-11-21 17:29:44,417 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 213 transitions, 1304 flow [2022-11-21 17:29:44,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:44,418 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:29:44,418 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] [2022-11-21 17:29:44,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 17:29:44,418 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-21 17:29:44,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:44,419 INFO L85 PathProgramCache]: Analyzing trace with hash 183204884, now seen corresponding path program 4 times [2022-11-21 17:29:44,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:44,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455268452] [2022-11-21 17:29:44,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:44,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:45,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:29:45,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:45,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455268452] [2022-11-21 17:29:45,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455268452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:29:45,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:29:45,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 17:29:45,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647813685] [2022-11-21 17:29:45,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:29:45,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 17:29:45,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:45,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 17:29:45,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:29:45,914 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2022-11-21 17:29:45,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 213 transitions, 1304 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:45,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:29:45,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2022-11-21 17:29:45,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:29:47,969 INFO L130 PetriNetUnfolder]: 1180/3433 cut-off events. [2022-11-21 17:29:47,970 INFO L131 PetriNetUnfolder]: For 8261/8384 co-relation queries the response was YES. [2022-11-21 17:29:47,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10147 conditions, 3433 events. 1180/3433 cut-off events. For 8261/8384 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 28006 event pairs, 561 based on Foata normal form. 8/3294 useless extension candidates. Maximal degree in co-relation 10101. Up to 1535 conditions per place. [2022-11-21 17:29:48,003 INFO L137 encePairwiseOnDemand]: 142/163 looper letters, 180 selfloop transitions, 54 changer transitions 0/306 dead transitions. [2022-11-21 17:29:48,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 306 transitions, 2344 flow [2022-11-21 17:29:48,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 17:29:48,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-21 17:29:48,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1774 transitions. [2022-11-21 17:29:48,010 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5441717791411043 [2022-11-21 17:29:48,010 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1774 transitions. [2022-11-21 17:29:48,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1774 transitions. [2022-11-21 17:29:48,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:29:48,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1774 transitions. [2022-11-21 17:29:48,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 88.7) internal successors, (1774), 20 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:48,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 163.0) internal successors, (3423), 21 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:48,027 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 163.0) internal successors, (3423), 21 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:48,027 INFO L175 Difference]: Start difference. First operand has 222 places, 213 transitions, 1304 flow. Second operand 20 states and 1774 transitions. [2022-11-21 17:29:48,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 306 transitions, 2344 flow [2022-11-21 17:29:48,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 306 transitions, 2291 flow, removed 21 selfloop flow, removed 5 redundant places. [2022-11-21 17:29:48,071 INFO L231 Difference]: Finished difference. Result has 248 places, 233 transitions, 1658 flow [2022-11-21 17:29:48,071 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=1254, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1658, PETRI_PLACES=248, PETRI_TRANSITIONS=233} [2022-11-21 17:29:48,072 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 97 predicate places. [2022-11-21 17:29:48,072 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 233 transitions, 1658 flow [2022-11-21 17:29:48,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:48,073 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:29:48,073 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:29:48,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 17:29:48,076 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-21 17:29:48,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:48,076 INFO L85 PathProgramCache]: Analyzing trace with hash 237013254, now seen corresponding path program 5 times [2022-11-21 17:29:48,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:48,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869269049] [2022-11-21 17:29:48,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:48,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:49,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:29:49,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:49,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869269049] [2022-11-21 17:29:49,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869269049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:29:49,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:29:49,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 17:29:49,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877680969] [2022-11-21 17:29:49,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:29:49,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 17:29:49,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:49,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 17:29:49,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:29:49,594 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2022-11-21 17:29:49,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 233 transitions, 1658 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:49,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:29:49,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2022-11-21 17:29:49,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:29:52,033 INFO L130 PetriNetUnfolder]: 1199/3520 cut-off events. [2022-11-21 17:29:52,033 INFO L131 PetriNetUnfolder]: For 11920/12065 co-relation queries the response was YES. [2022-11-21 17:29:52,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11212 conditions, 3520 events. 1199/3520 cut-off events. For 11920/12065 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 29148 event pairs, 139 based on Foata normal form. 7/3426 useless extension candidates. Maximal degree in co-relation 11153. Up to 821 conditions per place. [2022-11-21 17:29:52,063 INFO L137 encePairwiseOnDemand]: 139/163 looper letters, 172 selfloop transitions, 115 changer transitions 0/359 dead transitions. [2022-11-21 17:29:52,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 359 transitions, 3054 flow [2022-11-21 17:29:52,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 17:29:52,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-21 17:29:52,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1886 transitions. [2022-11-21 17:29:52,136 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5509786736780602 [2022-11-21 17:29:52,136 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1886 transitions. [2022-11-21 17:29:52,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1886 transitions. [2022-11-21 17:29:52,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:29:52,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1886 transitions. [2022-11-21 17:29:52,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.80952380952381) internal successors, (1886), 21 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:52,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:52,149 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:52,149 INFO L175 Difference]: Start difference. First operand has 248 places, 233 transitions, 1658 flow. Second operand 21 states and 1886 transitions. [2022-11-21 17:29:52,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 359 transitions, 3054 flow [2022-11-21 17:29:52,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 359 transitions, 2975 flow, removed 35 selfloop flow, removed 5 redundant places. [2022-11-21 17:29:52,212 INFO L231 Difference]: Finished difference. Result has 270 places, 268 transitions, 2387 flow [2022-11-21 17:29:52,213 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=1579, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2387, PETRI_PLACES=270, PETRI_TRANSITIONS=268} [2022-11-21 17:29:52,215 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 119 predicate places. [2022-11-21 17:29:52,216 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 268 transitions, 2387 flow [2022-11-21 17:29:52,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:52,225 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:29:52,225 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] [2022-11-21 17:29:52,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 17:29:52,225 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-21 17:29:52,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:52,226 INFO L85 PathProgramCache]: Analyzing trace with hash 499604106, now seen corresponding path program 6 times [2022-11-21 17:29:52,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:52,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253722669] [2022-11-21 17:29:52,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:52,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:53,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:29:53,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:53,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253722669] [2022-11-21 17:29:53,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253722669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:29:53,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:29:53,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 17:29:53,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469140096] [2022-11-21 17:29:53,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:29:53,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 17:29:53,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:53,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 17:29:53,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:29:53,782 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2022-11-21 17:29:53,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 268 transitions, 2387 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:53,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:29:53,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2022-11-21 17:29:53,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:29:56,247 INFO L130 PetriNetUnfolder]: 1192/3600 cut-off events. [2022-11-21 17:29:56,247 INFO L131 PetriNetUnfolder]: For 16031/16150 co-relation queries the response was YES. [2022-11-21 17:29:56,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12377 conditions, 3600 events. 1192/3600 cut-off events. For 16031/16150 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 30133 event pairs, 331 based on Foata normal form. 9/3484 useless extension candidates. Maximal degree in co-relation 12311. Up to 1135 conditions per place. [2022-11-21 17:29:56,283 INFO L137 encePairwiseOnDemand]: 141/163 looper letters, 236 selfloop transitions, 71 changer transitions 0/379 dead transitions. [2022-11-21 17:29:56,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 379 transitions, 3865 flow [2022-11-21 17:29:56,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 17:29:56,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-21 17:29:56,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1877 transitions. [2022-11-21 17:29:56,289 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5483494011101373 [2022-11-21 17:29:56,289 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1877 transitions. [2022-11-21 17:29:56,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1877 transitions. [2022-11-21 17:29:56,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:29:56,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1877 transitions. [2022-11-21 17:29:56,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.38095238095238) internal successors, (1877), 21 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:56,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:56,303 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:56,303 INFO L175 Difference]: Start difference. First operand has 270 places, 268 transitions, 2387 flow. Second operand 21 states and 1877 transitions. [2022-11-21 17:29:56,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 379 transitions, 3865 flow [2022-11-21 17:29:56,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 379 transitions, 3745 flow, removed 43 selfloop flow, removed 9 redundant places. [2022-11-21 17:29:56,420 INFO L231 Difference]: Finished difference. Result has 291 places, 291 transitions, 2882 flow [2022-11-21 17:29:56,421 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=2274, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2882, PETRI_PLACES=291, PETRI_TRANSITIONS=291} [2022-11-21 17:29:56,423 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 140 predicate places. [2022-11-21 17:29:56,423 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 291 transitions, 2882 flow [2022-11-21 17:29:56,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:56,424 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:29:56,424 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] [2022-11-21 17:29:56,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 17:29:56,425 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-21 17:29:56,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:56,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1963083982, now seen corresponding path program 7 times [2022-11-21 17:29:56,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:56,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963646231] [2022-11-21 17:29:56,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:56,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:58,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:29:58,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:58,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963646231] [2022-11-21 17:29:58,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963646231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:29:58,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:29:58,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-11-21 17:29:58,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799162750] [2022-11-21 17:29:58,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:29:58,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-21 17:29:58,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:58,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-21 17:29:58,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2022-11-21 17:29:58,783 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2022-11-21 17:29:58,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 291 transitions, 2882 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:58,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:29:58,785 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2022-11-21 17:29:58,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:30:04,798 INFO L130 PetriNetUnfolder]: 2724/6808 cut-off events. [2022-11-21 17:30:04,799 INFO L131 PetriNetUnfolder]: For 35880/35954 co-relation queries the response was YES. [2022-11-21 17:30:04,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24460 conditions, 6808 events. 2724/6808 cut-off events. For 35880/35954 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 58822 event pairs, 516 based on Foata normal form. 37/6718 useless extension candidates. Maximal degree in co-relation 24384. Up to 2285 conditions per place. [2022-11-21 17:30:04,860 INFO L137 encePairwiseOnDemand]: 135/163 looper letters, 404 selfloop transitions, 104 changer transitions 0/563 dead transitions. [2022-11-21 17:30:04,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 563 transitions, 6809 flow [2022-11-21 17:30:04,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 17:30:04,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-21 17:30:04,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2065 transitions. [2022-11-21 17:30:04,866 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5278629856850716 [2022-11-21 17:30:04,866 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2065 transitions. [2022-11-21 17:30:04,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2065 transitions. [2022-11-21 17:30:04,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:30:04,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2065 transitions. [2022-11-21 17:30:04,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 86.04166666666667) internal successors, (2065), 24 states have internal predecessors, (2065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:30:04,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:30:04,881 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:30:04,882 INFO L175 Difference]: Start difference. First operand has 291 places, 291 transitions, 2882 flow. Second operand 24 states and 2065 transitions. [2022-11-21 17:30:04,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 563 transitions, 6809 flow [2022-11-21 17:30:05,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 563 transitions, 6558 flow, removed 96 selfloop flow, removed 6 redundant places. [2022-11-21 17:30:05,140 INFO L231 Difference]: Finished difference. Result has 321 places, 342 transitions, 3850 flow [2022-11-21 17:30:05,141 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=2760, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3850, PETRI_PLACES=321, PETRI_TRANSITIONS=342} [2022-11-21 17:30:05,142 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 170 predicate places. [2022-11-21 17:30:05,142 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 342 transitions, 3850 flow [2022-11-21 17:30:05,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:30:05,143 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:30:05,143 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] [2022-11-21 17:30:05,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 17:30:05,146 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-21 17:30:05,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:30:05,146 INFO L85 PathProgramCache]: Analyzing trace with hash 149158956, now seen corresponding path program 8 times [2022-11-21 17:30:05,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:30:05,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918199634] [2022-11-21 17:30:05,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:30:05,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:30:05,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:07,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:30:07,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:30:07,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918199634] [2022-11-21 17:30:07,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918199634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:30:07,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:30:07,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-21 17:30:07,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583600765] [2022-11-21 17:30:07,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:30:07,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 17:30:07,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:30:07,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 17:30:07,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2022-11-21 17:30:07,460 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2022-11-21 17:30:07,462 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 342 transitions, 3850 flow. Second operand has 26 states, 26 states have (on average 79.07692307692308) internal successors, (2056), 26 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:30:07,462 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:30:07,462 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2022-11-21 17:30:07,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:30:16,402 INFO L130 PetriNetUnfolder]: 4076/9895 cut-off events. [2022-11-21 17:30:16,402 INFO L131 PetriNetUnfolder]: For 62177/62316 co-relation queries the response was YES. [2022-11-21 17:30:16,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37649 conditions, 9895 events. 4076/9895 cut-off events. For 62177/62316 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 91587 event pairs, 422 based on Foata normal form. 95/9822 useless extension candidates. Maximal degree in co-relation 37560. Up to 3440 conditions per place. [2022-11-21 17:30:16,531 INFO L137 encePairwiseOnDemand]: 134/163 looper letters, 403 selfloop transitions, 150 changer transitions 0/608 dead transitions. [2022-11-21 17:30:16,531 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 608 transitions, 7598 flow [2022-11-21 17:30:16,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-21 17:30:16,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-21 17:30:16,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2643 transitions. [2022-11-21 17:30:16,537 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.523055610528399 [2022-11-21 17:30:16,537 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2643 transitions. [2022-11-21 17:30:16,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2643 transitions. [2022-11-21 17:30:16,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:30:16,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2643 transitions. [2022-11-21 17:30:16,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 85.25806451612904) internal successors, (2643), 31 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:30:16,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 163.0) internal successors, (5216), 32 states have internal predecessors, (5216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:30:16,554 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 163.0) internal successors, (5216), 32 states have internal predecessors, (5216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:30:16,555 INFO L175 Difference]: Start difference. First operand has 321 places, 342 transitions, 3850 flow. Second operand 31 states and 2643 transitions. [2022-11-21 17:30:16,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 608 transitions, 7598 flow [2022-11-21 17:30:16,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 608 transitions, 7484 flow, removed 27 selfloop flow, removed 8 redundant places. [2022-11-21 17:30:17,060 INFO L231 Difference]: Finished difference. Result has 364 places, 406 transitions, 5389 flow [2022-11-21 17:30:17,061 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=3759, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=5389, PETRI_PLACES=364, PETRI_TRANSITIONS=406} [2022-11-21 17:30:17,062 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 213 predicate places. [2022-11-21 17:30:17,062 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 406 transitions, 5389 flow [2022-11-21 17:30:17,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 79.07692307692308) internal successors, (2056), 26 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:30:17,063 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:30:17,064 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] [2022-11-21 17:30:17,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 17:30:17,064 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-21 17:30:17,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:30:17,065 INFO L85 PathProgramCache]: Analyzing trace with hash 788458796, now seen corresponding path program 9 times [2022-11-21 17:30:17,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:30:17,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003217794] [2022-11-21 17:30:17,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:30:17,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:30:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:19,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:30:19,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:30:19,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003217794] [2022-11-21 17:30:19,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003217794] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:30:19,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:30:19,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-21 17:30:19,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240057730] [2022-11-21 17:30:19,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:30:19,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 17:30:19,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:30:19,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 17:30:19,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2022-11-21 17:30:19,511 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2022-11-21 17:30:19,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 406 transitions, 5389 flow. Second operand has 26 states, 26 states have (on average 79.07692307692308) internal successors, (2056), 26 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:30:19,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:30:19,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2022-11-21 17:30:19,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:30:30,009 INFO L130 PetriNetUnfolder]: 5689/13594 cut-off events. [2022-11-21 17:30:30,009 INFO L131 PetriNetUnfolder]: For 104503/104684 co-relation queries the response was YES. [2022-11-21 17:30:30,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55865 conditions, 13594 events. 5689/13594 cut-off events. For 104503/104684 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 131622 event pairs, 1218 based on Foata normal form. 77/13454 useless extension candidates. Maximal degree in co-relation 55755. Up to 3767 conditions per place. [2022-11-21 17:30:30,197 INFO L137 encePairwiseOnDemand]: 134/163 looper letters, 404 selfloop transitions, 199 changer transitions 0/658 dead transitions. [2022-11-21 17:30:30,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 658 transitions, 9220 flow [2022-11-21 17:30:30,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-21 17:30:30,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-21 17:30:30,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2726 transitions. [2022-11-21 17:30:30,203 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5226226993865031 [2022-11-21 17:30:30,203 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2726 transitions. [2022-11-21 17:30:30,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2726 transitions. [2022-11-21 17:30:30,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:30:30,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2726 transitions. [2022-11-21 17:30:30,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 85.1875) internal successors, (2726), 32 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:30:30,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 163.0) internal successors, (5379), 33 states have internal predecessors, (5379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:30:30,218 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 163.0) internal successors, (5379), 33 states have internal predecessors, (5379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:30:30,218 INFO L175 Difference]: Start difference. First operand has 364 places, 406 transitions, 5389 flow. Second operand 32 states and 2726 transitions. [2022-11-21 17:30:30,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 658 transitions, 9220 flow [2022-11-21 17:30:31,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 658 transitions, 8960 flow, removed 116 selfloop flow, removed 6 redundant places. [2022-11-21 17:30:31,077 INFO L231 Difference]: Finished difference. Result has 412 places, 474 transitions, 7262 flow [2022-11-21 17:30:31,078 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=5216, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=7262, PETRI_PLACES=412, PETRI_TRANSITIONS=474} [2022-11-21 17:30:31,078 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 261 predicate places. [2022-11-21 17:30:31,079 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 474 transitions, 7262 flow [2022-11-21 17:30:31,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 79.07692307692308) internal successors, (2056), 26 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:30:31,080 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:30:31,080 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] [2022-11-21 17:30:31,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 17:30:31,080 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-21 17:30:31,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:30:31,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1547922784, now seen corresponding path program 10 times [2022-11-21 17:30:31,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:30:31,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301086506] [2022-11-21 17:30:31,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:30:31,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:30:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:33,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:30:33,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:30:33,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301086506] [2022-11-21 17:30:33,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301086506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:30:33,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:30:33,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-11-21 17:30:33,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304638276] [2022-11-21 17:30:33,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:30:33,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-21 17:30:33,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:30:33,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-21 17:30:33,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2022-11-21 17:30:33,034 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2022-11-21 17:30:33,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 474 transitions, 7262 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:30:33,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:30:33,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2022-11-21 17:30:33,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:30:42,890 INFO L130 PetriNetUnfolder]: 6886/16541 cut-off events. [2022-11-21 17:30:42,890 INFO L131 PetriNetUnfolder]: For 159849/160039 co-relation queries the response was YES. [2022-11-21 17:30:43,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72945 conditions, 16541 events. 6886/16541 cut-off events. For 159849/160039 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 167250 event pairs, 1657 based on Foata normal form. 69/16334 useless extension candidates. Maximal degree in co-relation 72812. Up to 7179 conditions per place. [2022-11-21 17:30:43,097 INFO L137 encePairwiseOnDemand]: 135/163 looper letters, 482 selfloop transitions, 173 changer transitions 0/710 dead transitions. [2022-11-21 17:30:43,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 710 transitions, 11761 flow [2022-11-21 17:30:43,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 17:30:43,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-21 17:30:43,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2062 transitions. [2022-11-21 17:30:43,102 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5270961145194274 [2022-11-21 17:30:43,103 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2062 transitions. [2022-11-21 17:30:43,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2062 transitions. [2022-11-21 17:30:43,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:30:43,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2062 transitions. [2022-11-21 17:30:43,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 85.91666666666667) internal successors, (2062), 24 states have internal predecessors, (2062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:30:43,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:30:43,116 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:30:43,116 INFO L175 Difference]: Start difference. First operand has 412 places, 474 transitions, 7262 flow. Second operand 24 states and 2062 transitions. [2022-11-21 17:30:43,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 710 transitions, 11761 flow [2022-11-21 17:30:44,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 710 transitions, 11410 flow, removed 167 selfloop flow, removed 5 redundant places. [2022-11-21 17:30:44,567 INFO L231 Difference]: Finished difference. Result has 443 places, 525 transitions, 8712 flow [2022-11-21 17:30:44,567 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=7023, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=8712, PETRI_PLACES=443, PETRI_TRANSITIONS=525} [2022-11-21 17:30:44,568 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 292 predicate places. [2022-11-21 17:30:44,568 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 525 transitions, 8712 flow [2022-11-21 17:30:44,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:30:44,569 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:30:44,569 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] [2022-11-21 17:30:44,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 17:30:44,569 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-21 17:30:44,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:30:44,570 INFO L85 PathProgramCache]: Analyzing trace with hash -607534250, now seen corresponding path program 11 times [2022-11-21 17:30:44,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:30:44,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839858576] [2022-11-21 17:30:44,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:30:44,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:30:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:46,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:30:46,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:30:46,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839858576] [2022-11-21 17:30:46,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839858576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:30:46,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:30:46,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-11-21 17:30:46,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504508246] [2022-11-21 17:30:46,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:30:46,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-21 17:30:46,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:30:46,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-21 17:30:46,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2022-11-21 17:30:46,309 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2022-11-21 17:30:46,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 525 transitions, 8712 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:30:46,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:30:46,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2022-11-21 17:30:46,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:30:56,724 INFO L130 PetriNetUnfolder]: 6884/16538 cut-off events. [2022-11-21 17:30:56,724 INFO L131 PetriNetUnfolder]: For 189593/189705 co-relation queries the response was YES. [2022-11-21 17:30:56,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75299 conditions, 16538 events. 6884/16538 cut-off events. For 189593/189705 co-relation queries the response was YES. Maximal size of possible extension queue 676. Compared 169382 event pairs, 1217 based on Foata normal form. 53/16273 useless extension candidates. Maximal degree in co-relation 75153. Up to 7781 conditions per place. [2022-11-21 17:30:57,053 INFO L137 encePairwiseOnDemand]: 135/163 looper letters, 648 selfloop transitions, 169 changer transitions 0/872 dead transitions. [2022-11-21 17:30:57,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 872 transitions, 15517 flow [2022-11-21 17:30:57,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-21 17:30:57,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-21 17:30:57,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2150 transitions. [2022-11-21 17:30:57,057 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5276073619631901 [2022-11-21 17:30:57,057 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2150 transitions. [2022-11-21 17:30:57,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2150 transitions. [2022-11-21 17:30:57,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:30:57,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2150 transitions. [2022-11-21 17:30:57,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 86.0) internal successors, (2150), 25 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) [2022-11-21 17:30:57,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 163.0) internal successors, (4238), 26 states have internal predecessors, (4238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:30:57,067 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 163.0) internal successors, (4238), 26 states have internal predecessors, (4238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:30:57,067 INFO L175 Difference]: Start difference. First operand has 443 places, 525 transitions, 8712 flow. Second operand 25 states and 2150 transitions. [2022-11-21 17:30:57,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 872 transitions, 15517 flow [2022-11-21 17:30:58,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 872 transitions, 15130 flow, removed 93 selfloop flow, removed 8 redundant places. [2022-11-21 17:30:58,423 INFO L231 Difference]: Finished difference. Result has 467 places, 543 transitions, 9362 flow [2022-11-21 17:30:58,423 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=8453, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=9362, PETRI_PLACES=467, PETRI_TRANSITIONS=543} [2022-11-21 17:30:58,424 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 316 predicate places. [2022-11-21 17:30:58,424 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 543 transitions, 9362 flow [2022-11-21 17:30:58,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:30:58,424 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:30:58,424 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] [2022-11-21 17:30:58,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 17:30:58,425 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-21 17:30:58,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:30:58,425 INFO L85 PathProgramCache]: Analyzing trace with hash 340835736, now seen corresponding path program 12 times [2022-11-21 17:30:58,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:30:58,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723067929] [2022-11-21 17:30:58,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:30:58,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:30:58,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:59,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:30:59,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:30:59,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723067929] [2022-11-21 17:30:59,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723067929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:30:59,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:30:59,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 17:30:59,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874810460] [2022-11-21 17:30:59,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:30:59,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 17:30:59,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:30:59,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 17:30:59,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:30:59,555 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2022-11-21 17:30:59,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 543 transitions, 9362 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:30:59,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:30:59,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2022-11-21 17:30:59,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:31:07,718 INFO L130 PetriNetUnfolder]: 6464/17602 cut-off events. [2022-11-21 17:31:07,718 INFO L131 PetriNetUnfolder]: For 197135/199200 co-relation queries the response was YES. [2022-11-21 17:31:07,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74214 conditions, 17602 events. 6464/17602 cut-off events. For 197135/199200 co-relation queries the response was YES. Maximal size of possible extension queue 993. Compared 202046 event pairs, 1196 based on Foata normal form. 915/18094 useless extension candidates. Maximal degree in co-relation 74060. Up to 4690 conditions per place. [2022-11-21 17:31:08,038 INFO L137 encePairwiseOnDemand]: 139/163 looper letters, 553 selfloop transitions, 209 changer transitions 0/879 dead transitions. [2022-11-21 17:31:08,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 879 transitions, 17483 flow [2022-11-21 17:31:08,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 17:31:08,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-21 17:31:08,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1688 transitions. [2022-11-21 17:31:08,044 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5450435905715209 [2022-11-21 17:31:08,044 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1688 transitions. [2022-11-21 17:31:08,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1688 transitions. [2022-11-21 17:31:08,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:31:08,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1688 transitions. [2022-11-21 17:31:08,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 88.84210526315789) internal successors, (1688), 19 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:08,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 163.0) internal successors, (3260), 20 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:08,051 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 163.0) internal successors, (3260), 20 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:08,051 INFO L175 Difference]: Start difference. First operand has 467 places, 543 transitions, 9362 flow. Second operand 19 states and 1688 transitions. [2022-11-21 17:31:08,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 879 transitions, 17483 flow [2022-11-21 17:31:09,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 879 transitions, 17253 flow, removed 44 selfloop flow, removed 13 redundant places. [2022-11-21 17:31:09,496 INFO L231 Difference]: Finished difference. Result has 480 places, 640 transitions, 12060 flow [2022-11-21 17:31:09,497 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=9148, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=12060, PETRI_PLACES=480, PETRI_TRANSITIONS=640} [2022-11-21 17:31:09,498 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 329 predicate places. [2022-11-21 17:31:09,498 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 640 transitions, 12060 flow [2022-11-21 17:31:09,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:09,499 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:31:09,499 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] [2022-11-21 17:31:09,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 17:31:09,500 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-21 17:31:09,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:31:09,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1028361340, now seen corresponding path program 13 times [2022-11-21 17:31:09,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:31:09,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181668394] [2022-11-21 17:31:09,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:31:09,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:31:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:11,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:31:11,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:31:11,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181668394] [2022-11-21 17:31:11,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181668394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:31:11,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:31:11,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 17:31:11,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246161189] [2022-11-21 17:31:11,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:31:11,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 17:31:11,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:31:11,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 17:31:11,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:31:11,106 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2022-11-21 17:31:11,108 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 640 transitions, 12060 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:11,108 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:31:11,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2022-11-21 17:31:11,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand