./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2937ba88-c37a-43de-8695-db31951e3b7e/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2937ba88-c37a-43de-8695-db31951e3b7e/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2937ba88-c37a-43de-8695-db31951e3b7e/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2937ba88-c37a-43de-8695-db31951e3b7e/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2937ba88-c37a-43de-8695-db31951e3b7e/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2937ba88-c37a-43de-8695-db31951e3b7e/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:55:30,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:55:30,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:55:30,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:55:30,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:55:30,728 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:55:30,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:55:30,735 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:55:30,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:55:30,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:55:30,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:55:30,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:55:30,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:55:30,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:55:30,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:55:30,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:55:30,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:55:30,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:55:30,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:55:30,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:55:30,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:55:30,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:55:30,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:55:30,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:55:30,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:55:30,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:55:30,778 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:55:30,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:55:30,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:55:30,781 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:55:30,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:55:30,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:55:30,792 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:55:30,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:55:30,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:55:30,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:55:30,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:55:30,795 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:55:30,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:55:30,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:55:30,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:55:30,798 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2937ba88-c37a-43de-8695-db31951e3b7e/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:55:30,840 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:55:30,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:55:30,842 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:55:30,842 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:55:30,843 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:55:30,843 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:55:30,844 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:55:30,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:55:30,845 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:55:30,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:55:30,846 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:55:30,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:55:30,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:55:30,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:55:30,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:55:30,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:55:30,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:55:30,848 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:55:30,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:55:30,848 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:55:30,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:55:30,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:55:30,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:55:30,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:55:30,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:55:30,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:55:30,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:55:30,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:55:30,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:55:30,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:55:30,853 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:55:30,853 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:55:30,854 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:55:30,854 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_2937ba88-c37a-43de-8695-db31951e3b7e/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2937ba88-c37a-43de-8695-db31951e3b7e/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db [2022-11-18 20:55:31,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:55:31,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:55:31,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:55:31,190 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:55:31,191 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:55:31,193 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2937ba88-c37a-43de-8695-db31951e3b7e/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2022-11-18 20:55:31,290 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2937ba88-c37a-43de-8695-db31951e3b7e/bin/uautomizer-TMbwUNV5ro/data/086e5fbc8/1a898e12544547d99b737e12f0066e97/FLAG6c111414f [2022-11-18 20:55:31,988 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:55:31,988 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2937ba88-c37a-43de-8695-db31951e3b7e/sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2022-11-18 20:55:32,022 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2937ba88-c37a-43de-8695-db31951e3b7e/bin/uautomizer-TMbwUNV5ro/data/086e5fbc8/1a898e12544547d99b737e12f0066e97/FLAG6c111414f [2022-11-18 20:55:32,174 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2937ba88-c37a-43de-8695-db31951e3b7e/bin/uautomizer-TMbwUNV5ro/data/086e5fbc8/1a898e12544547d99b737e12f0066e97 [2022-11-18 20:55:32,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:55:32,182 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:55:32,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:55:32,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:55:32,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:55:32,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:55:32" (1/1) ... [2022-11-18 20:55:32,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60221cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:32, skipping insertion in model container [2022-11-18 20:55:32,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:55:32" (1/1) ... [2022-11-18 20:55:32,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:55:32,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:55:33,222 WARN L234 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_2937ba88-c37a-43de-8695-db31951e3b7e/sv-benchmarks/c/ldv-races/race-2_1-container_of.i[76077,76090] [2022-11-18 20:55:33,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:55:33,298 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:55:33,351 WARN L234 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_2937ba88-c37a-43de-8695-db31951e3b7e/sv-benchmarks/c/ldv-races/race-2_1-container_of.i[76077,76090] [2022-11-18 20:55:33,367 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:55:33,513 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:55:33,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:33 WrapperNode [2022-11-18 20:55:33,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:55:33,516 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:55:33,517 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:55:33,517 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:55:33,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:33" (1/1) ... [2022-11-18 20:55:33,580 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:33" (1/1) ... [2022-11-18 20:55:33,643 INFO L138 Inliner]: procedures = 482, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 133 [2022-11-18 20:55:33,646 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:55:33,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:55:33,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:55:33,647 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:55:33,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:33" (1/1) ... [2022-11-18 20:55:33,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:33" (1/1) ... [2022-11-18 20:55:33,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:33" (1/1) ... [2022-11-18 20:55:33,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:33" (1/1) ... [2022-11-18 20:55:33,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:33" (1/1) ... [2022-11-18 20:55:33,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:33" (1/1) ... [2022-11-18 20:55:33,713 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:33" (1/1) ... [2022-11-18 20:55:33,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:33" (1/1) ... [2022-11-18 20:55:33,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:55:33,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:55:33,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:55:33,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:55:33,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:33" (1/1) ... [2022-11-18 20:55:33,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:55:33,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2937ba88-c37a-43de-8695-db31951e3b7e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:55:33,796 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2937ba88-c37a-43de-8695-db31951e3b7e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:55:33,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2937ba88-c37a-43de-8695-db31951e3b7e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:55:33,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:55:33,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:55:33,856 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:55:33,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:55:33,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 20:55:33,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:55:33,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:55:33,857 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-11-18 20:55:33,859 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-11-18 20:55:33,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:55:33,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:55:33,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:55:33,861 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:55:34,325 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:55:34,328 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:55:34,730 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:55:34,740 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:55:34,741 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:55:34,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:55:34 BoogieIcfgContainer [2022-11-18 20:55:34,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:55:34,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:55:34,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:55:34,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:55:34,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:55:32" (1/3) ... [2022-11-18 20:55:34,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b8ecfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:55:34, skipping insertion in model container [2022-11-18 20:55:34,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:33" (2/3) ... [2022-11-18 20:55:34,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b8ecfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:55:34, skipping insertion in model container [2022-11-18 20:55:34,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:55:34" (3/3) ... [2022-11-18 20:55:34,763 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_1-container_of.i [2022-11-18 20:55:34,773 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:55:34,785 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:55:34,785 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-18 20:55:34,786 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:55:34,918 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:55:34,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 195 transitions, 406 flow [2022-11-18 20:55:35,109 INFO L130 PetriNetUnfolder]: 10/240 cut-off events. [2022-11-18 20:55:35,110 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:55:35,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 240 events. 10/240 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 405 event pairs, 0 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 141. Up to 4 conditions per place. [2022-11-18 20:55:35,117 INFO L82 GeneralOperation]: Start removeDead. Operand has 193 places, 195 transitions, 406 flow [2022-11-18 20:55:35,124 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 181 transitions, 374 flow [2022-11-18 20:55:35,135 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:55:35,152 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;@f9bb7e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:55:35,152 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-18 20:55:35,172 INFO L130 PetriNetUnfolder]: 0/46 cut-off events. [2022-11-18 20:55:35,180 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:55:35,180 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:35,181 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:55:35,182 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:55:35,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:35,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1888391755, now seen corresponding path program 1 times [2022-11-18 20:55:35,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:35,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103781010] [2022-11-18 20:55:35,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:35,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:36,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:55:36,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:36,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103781010] [2022-11-18 20:55:36,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103781010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:36,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:36,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:55:36,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630619310] [2022-11-18 20:55:36,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:36,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:55:36,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:36,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:55:36,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:55:36,518 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 195 [2022-11-18 20:55:36,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 181 transitions, 374 flow. Second operand has 6 states, 6 states have (on average 120.5) internal successors, (723), 6 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:36,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:55:36,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 195 [2022-11-18 20:55:36,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:55:37,184 INFO L130 PetriNetUnfolder]: 361/1046 cut-off events. [2022-11-18 20:55:37,184 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-18 20:55:37,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1737 conditions, 1046 events. 361/1046 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6142 event pairs, 216 based on Foata normal form. 20/1013 useless extension candidates. Maximal degree in co-relation 1489. Up to 397 conditions per place. [2022-11-18 20:55:37,248 INFO L137 encePairwiseOnDemand]: 173/195 looper letters, 53 selfloop transitions, 17 changer transitions 1/177 dead transitions. [2022-11-18 20:55:37,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 177 transitions, 508 flow [2022-11-18 20:55:37,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:55:37,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:55:37,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1138 transitions. [2022-11-18 20:55:37,278 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6484330484330484 [2022-11-18 20:55:37,281 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1138 transitions. [2022-11-18 20:55:37,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1138 transitions. [2022-11-18 20:55:37,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:55:37,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1138 transitions. [2022-11-18 20:55:37,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.44444444444444) internal successors, (1138), 9 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:37,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 195.0) internal successors, (1950), 10 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:37,316 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 195.0) internal successors, (1950), 10 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:37,318 INFO L175 Difference]: Start difference. First operand has 181 places, 181 transitions, 374 flow. Second operand 9 states and 1138 transitions. [2022-11-18 20:55:37,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 177 transitions, 508 flow [2022-11-18 20:55:37,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 177 transitions, 500 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:55:37,338 INFO L231 Difference]: Finished difference. Result has 179 places, 170 transitions, 385 flow [2022-11-18 20:55:37,341 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=385, PETRI_PLACES=179, PETRI_TRANSITIONS=170} [2022-11-18 20:55:37,347 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, -2 predicate places. [2022-11-18 20:55:37,347 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 170 transitions, 385 flow [2022-11-18 20:55:37,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.5) internal successors, (723), 6 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:37,348 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:37,349 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:55:37,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:55:37,350 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:55:37,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:37,352 INFO L85 PathProgramCache]: Analyzing trace with hash -57843741, now seen corresponding path program 1 times [2022-11-18 20:55:37,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:37,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717711889] [2022-11-18 20:55:37,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:37,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:37,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:55:37,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:37,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717711889] [2022-11-18 20:55:37,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717711889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:37,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:37,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:55:37,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933797353] [2022-11-18 20:55:37,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:37,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:55:37,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:37,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:55:37,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:55:37,891 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 195 [2022-11-18 20:55:37,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 170 transitions, 385 flow. Second operand has 6 states, 6 states have (on average 121.33333333333333) internal successors, (728), 6 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:37,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:55:37,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 195 [2022-11-18 20:55:37,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:55:38,343 INFO L130 PetriNetUnfolder]: 361/1016 cut-off events. [2022-11-18 20:55:38,344 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-11-18 20:55:38,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1784 conditions, 1016 events. 361/1016 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5868 event pairs, 120 based on Foata normal form. 1/984 useless extension candidates. Maximal degree in co-relation 882. Up to 262 conditions per place. [2022-11-18 20:55:38,353 INFO L137 encePairwiseOnDemand]: 176/195 looper letters, 61 selfloop transitions, 18 changer transitions 1/185 dead transitions. [2022-11-18 20:55:38,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 185 transitions, 577 flow [2022-11-18 20:55:38,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:55:38,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:55:38,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1261 transitions. [2022-11-18 20:55:38,358 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6466666666666666 [2022-11-18 20:55:38,358 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1261 transitions. [2022-11-18 20:55:38,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1261 transitions. [2022-11-18 20:55:38,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:55:38,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1261 transitions. [2022-11-18 20:55:38,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 126.1) internal successors, (1261), 10 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:38,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 195.0) internal successors, (2145), 11 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:38,370 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 195.0) internal successors, (2145), 11 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:38,370 INFO L175 Difference]: Start difference. First operand has 179 places, 170 transitions, 385 flow. Second operand 10 states and 1261 transitions. [2022-11-18 20:55:38,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 185 transitions, 577 flow [2022-11-18 20:55:38,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 185 transitions, 548 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 20:55:38,378 INFO L231 Difference]: Finished difference. Result has 180 places, 169 transitions, 396 flow [2022-11-18 20:55:38,378 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=396, PETRI_PLACES=180, PETRI_TRANSITIONS=169} [2022-11-18 20:55:38,379 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, -1 predicate places. [2022-11-18 20:55:38,380 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 169 transitions, 396 flow [2022-11-18 20:55:38,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 121.33333333333333) internal successors, (728), 6 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:38,381 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:38,381 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:55:38,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:55:38,382 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:55:38,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:38,383 INFO L85 PathProgramCache]: Analyzing trace with hash 5829728, now seen corresponding path program 1 times [2022-11-18 20:55:38,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:38,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156680289] [2022-11-18 20:55:38,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:38,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:38,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:55:38,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:38,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156680289] [2022-11-18 20:55:38,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156680289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:38,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:38,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:55:38,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655901990] [2022-11-18 20:55:38,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:38,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:55:38,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:38,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:55:38,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:55:38,851 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 195 [2022-11-18 20:55:38,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 169 transitions, 396 flow. Second operand has 6 states, 6 states have (on average 120.33333333333333) internal successors, (722), 6 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:38,853 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:55:38,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 195 [2022-11-18 20:55:38,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:55:39,743 INFO L130 PetriNetUnfolder]: 832/2093 cut-off events. [2022-11-18 20:55:39,744 INFO L131 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2022-11-18 20:55:39,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3836 conditions, 2093 events. 832/2093 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 14040 event pairs, 169 based on Foata normal form. 32/2097 useless extension candidates. Maximal degree in co-relation 1029. Up to 499 conditions per place. [2022-11-18 20:55:39,761 INFO L137 encePairwiseOnDemand]: 174/195 looper letters, 100 selfloop transitions, 49 changer transitions 0/254 dead transitions. [2022-11-18 20:55:39,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 254 transitions, 880 flow [2022-11-18 20:55:39,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:55:39,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 20:55:39,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1657 transitions. [2022-11-18 20:55:39,768 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6536489151873768 [2022-11-18 20:55:39,768 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1657 transitions. [2022-11-18 20:55:39,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1657 transitions. [2022-11-18 20:55:39,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:55:39,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1657 transitions. [2022-11-18 20:55:39,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 127.46153846153847) internal successors, (1657), 13 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:39,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:39,782 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:39,782 INFO L175 Difference]: Start difference. First operand has 180 places, 169 transitions, 396 flow. Second operand 13 states and 1657 transitions. [2022-11-18 20:55:39,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 254 transitions, 880 flow [2022-11-18 20:55:39,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 254 transitions, 834 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-18 20:55:39,792 INFO L231 Difference]: Finished difference. Result has 192 places, 206 transitions, 666 flow [2022-11-18 20:55:39,793 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=666, PETRI_PLACES=192, PETRI_TRANSITIONS=206} [2022-11-18 20:55:39,794 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 11 predicate places. [2022-11-18 20:55:39,794 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 206 transitions, 666 flow [2022-11-18 20:55:39,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.33333333333333) internal successors, (722), 6 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:39,795 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:39,795 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:55:39,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:55:39,796 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:55:39,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:39,797 INFO L85 PathProgramCache]: Analyzing trace with hash -2139572029, now seen corresponding path program 1 times [2022-11-18 20:55:39,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:39,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692824896] [2022-11-18 20:55:39,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:39,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:40,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:55:40,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:40,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692824896] [2022-11-18 20:55:40,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692824896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:40,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:40,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:55:40,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513606906] [2022-11-18 20:55:40,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:40,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:55:40,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:40,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:55:40,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:55:40,364 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 195 [2022-11-18 20:55:40,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 206 transitions, 666 flow. Second operand has 6 states, 6 states have (on average 121.16666666666667) internal successors, (727), 6 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:40,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:55:40,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 195 [2022-11-18 20:55:40,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:55:41,383 INFO L130 PetriNetUnfolder]: 1084/2667 cut-off events. [2022-11-18 20:55:41,384 INFO L131 PetriNetUnfolder]: For 10874/10936 co-relation queries the response was YES. [2022-11-18 20:55:41,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9161 conditions, 2667 events. 1084/2667 cut-off events. For 10874/10936 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 19335 event pairs, 218 based on Foata normal form. 47/2686 useless extension candidates. Maximal degree in co-relation 7852. Up to 732 conditions per place. [2022-11-18 20:55:41,487 INFO L137 encePairwiseOnDemand]: 176/195 looper letters, 74 selfloop transitions, 48 changer transitions 69/295 dead transitions. [2022-11-18 20:55:41,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 295 transitions, 1750 flow [2022-11-18 20:55:41,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:55:41,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 20:55:41,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1406 transitions. [2022-11-18 20:55:41,493 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6554778554778555 [2022-11-18 20:55:41,493 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1406 transitions. [2022-11-18 20:55:41,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1406 transitions. [2022-11-18 20:55:41,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:55:41,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1406 transitions. [2022-11-18 20:55:41,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 127.81818181818181) internal successors, (1406), 11 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:41,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 195.0) internal successors, (2340), 12 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:41,506 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 195.0) internal successors, (2340), 12 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:41,510 INFO L175 Difference]: Start difference. First operand has 192 places, 206 transitions, 666 flow. Second operand 11 states and 1406 transitions. [2022-11-18 20:55:41,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 295 transitions, 1750 flow [2022-11-18 20:55:41,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 295 transitions, 1750 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:55:41,539 INFO L231 Difference]: Finished difference. Result has 210 places, 212 transitions, 979 flow [2022-11-18 20:55:41,539 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=979, PETRI_PLACES=210, PETRI_TRANSITIONS=212} [2022-11-18 20:55:41,541 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 29 predicate places. [2022-11-18 20:55:41,543 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 212 transitions, 979 flow [2022-11-18 20:55:41,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 121.16666666666667) internal successors, (727), 6 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:41,544 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:41,549 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:55:41,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:55:41,550 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:55:41,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:41,552 INFO L85 PathProgramCache]: Analyzing trace with hash -902131826, now seen corresponding path program 1 times [2022-11-18 20:55:41,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:41,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987106640] [2022-11-18 20:55:41,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:41,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:41,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:55:41,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:41,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987106640] [2022-11-18 20:55:41,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987106640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:41,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:41,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:55:41,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371790041] [2022-11-18 20:55:41,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:41,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:55:41,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:41,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:55:41,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:55:41,790 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 195 [2022-11-18 20:55:41,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 212 transitions, 979 flow. Second operand has 5 states, 5 states have (on average 170.2) internal successors, (851), 5 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:41,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:55:41,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 195 [2022-11-18 20:55:41,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:55:41,886 INFO L130 PetriNetUnfolder]: 4/168 cut-off events. [2022-11-18 20:55:41,886 INFO L131 PetriNetUnfolder]: For 459/531 co-relation queries the response was YES. [2022-11-18 20:55:41,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 168 events. 4/168 cut-off events. For 459/531 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 191 event pairs, 4 based on Foata normal form. 8/174 useless extension candidates. Maximal degree in co-relation 337. Up to 13 conditions per place. [2022-11-18 20:55:41,888 INFO L137 encePairwiseOnDemand]: 190/195 looper letters, 9 selfloop transitions, 4 changer transitions 0/140 dead transitions. [2022-11-18 20:55:41,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 140 transitions, 438 flow [2022-11-18 20:55:41,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:55:41,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:55:41,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1022 transitions. [2022-11-18 20:55:41,892 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8735042735042735 [2022-11-18 20:55:41,892 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1022 transitions. [2022-11-18 20:55:41,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1022 transitions. [2022-11-18 20:55:41,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:55:41,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1022 transitions. [2022-11-18 20:55:41,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 170.33333333333334) internal successors, (1022), 6 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:41,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 195.0) internal successors, (1365), 7 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:41,902 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 195.0) internal successors, (1365), 7 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:41,903 INFO L175 Difference]: Start difference. First operand has 210 places, 212 transitions, 979 flow. Second operand 6 states and 1022 transitions. [2022-11-18 20:55:41,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 140 transitions, 438 flow [2022-11-18 20:55:41,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 140 transitions, 318 flow, removed 40 selfloop flow, removed 19 redundant places. [2022-11-18 20:55:41,909 INFO L231 Difference]: Finished difference. Result has 153 places, 140 transitions, 300 flow [2022-11-18 20:55:41,910 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=300, PETRI_PLACES=153, PETRI_TRANSITIONS=140} [2022-11-18 20:55:41,914 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, -28 predicate places. [2022-11-18 20:55:41,914 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 140 transitions, 300 flow [2022-11-18 20:55:41,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 170.2) internal successors, (851), 5 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:41,915 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:41,916 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:55:41,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:55:41,916 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:55:41,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:41,919 INFO L85 PathProgramCache]: Analyzing trace with hash -971686872, now seen corresponding path program 1 times [2022-11-18 20:55:41,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:41,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393352548] [2022-11-18 20:55:41,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:41,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:42,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:43,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:55:43,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:43,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393352548] [2022-11-18 20:55:43,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393352548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:43,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:43,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 20:55:43,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583418249] [2022-11-18 20:55:43,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:43,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:55:43,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:43,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:55:43,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:55:43,748 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 195 [2022-11-18 20:55:43,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 140 transitions, 300 flow. Second operand has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:43,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:55:43,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 195 [2022-11-18 20:55:43,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:55:45,341 INFO L130 PetriNetUnfolder]: 140/655 cut-off events. [2022-11-18 20:55:45,342 INFO L131 PetriNetUnfolder]: For 60/116 co-relation queries the response was YES. [2022-11-18 20:55:45,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1096 conditions, 655 events. 140/655 cut-off events. For 60/116 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3348 event pairs, 2 based on Foata normal form. 9/650 useless extension candidates. Maximal degree in co-relation 1088. Up to 84 conditions per place. [2022-11-18 20:55:45,349 INFO L137 encePairwiseOnDemand]: 181/195 looper letters, 99 selfloop transitions, 17 changer transitions 0/229 dead transitions. [2022-11-18 20:55:45,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 229 transitions, 759 flow [2022-11-18 20:55:45,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:55:45,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 20:55:45,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2145 transitions. [2022-11-18 20:55:45,356 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8461538461538461 [2022-11-18 20:55:45,356 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2145 transitions. [2022-11-18 20:55:45,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2145 transitions. [2022-11-18 20:55:45,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:55:45,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2145 transitions. [2022-11-18 20:55:45,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 165.0) internal successors, (2145), 13 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:45,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:45,373 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:45,374 INFO L175 Difference]: Start difference. First operand has 153 places, 140 transitions, 300 flow. Second operand 13 states and 2145 transitions. [2022-11-18 20:55:45,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 229 transitions, 759 flow [2022-11-18 20:55:45,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 229 transitions, 752 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:55:45,381 INFO L231 Difference]: Finished difference. Result has 166 places, 150 transitions, 376 flow [2022-11-18 20:55:45,381 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=376, PETRI_PLACES=166, PETRI_TRANSITIONS=150} [2022-11-18 20:55:45,384 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, -15 predicate places. [2022-11-18 20:55:45,385 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 150 transitions, 376 flow [2022-11-18 20:55:45,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:45,386 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:45,386 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:55:45,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:55:45,387 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:55:45,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:45,388 INFO L85 PathProgramCache]: Analyzing trace with hash -239241560, now seen corresponding path program 2 times [2022-11-18 20:55:45,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:45,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087647019] [2022-11-18 20:55:45,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:45,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:48,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:55:48,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:48,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087647019] [2022-11-18 20:55:48,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087647019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:48,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:48,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-18 20:55:48,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877628876] [2022-11-18 20:55:48,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:48,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 20:55:48,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:48,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 20:55:48,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:55:48,579 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 195 [2022-11-18 20:55:48,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 150 transitions, 376 flow. Second operand has 24 states, 24 states have (on average 91.83333333333333) internal successors, (2204), 24 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:48,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:55:48,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 195 [2022-11-18 20:55:48,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:02,526 INFO L130 PetriNetUnfolder]: 1471/3064 cut-off events. [2022-11-18 20:56:02,527 INFO L131 PetriNetUnfolder]: For 1329/1339 co-relation queries the response was YES. [2022-11-18 20:56:02,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7272 conditions, 3064 events. 1471/3064 cut-off events. For 1329/1339 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 19435 event pairs, 39 based on Foata normal form. 10/3035 useless extension candidates. Maximal degree in co-relation 7259. Up to 426 conditions per place. [2022-11-18 20:56:02,553 INFO L137 encePairwiseOnDemand]: 163/195 looper letters, 307 selfloop transitions, 119 changer transitions 0/491 dead transitions. [2022-11-18 20:56:02,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 491 transitions, 2259 flow [2022-11-18 20:56:02,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-11-18 20:56:02,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-11-18 20:56:02,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 5558 transitions. [2022-11-18 20:56:02,570 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4914235190097259 [2022-11-18 20:56:02,570 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 5558 transitions. [2022-11-18 20:56:02,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 5558 transitions. [2022-11-18 20:56:02,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:02,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 5558 transitions. [2022-11-18 20:56:02,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 95.82758620689656) internal successors, (5558), 58 states have internal predecessors, (5558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:02,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 195.0) internal successors, (11505), 59 states have internal predecessors, (11505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:02,618 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 195.0) internal successors, (11505), 59 states have internal predecessors, (11505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:02,618 INFO L175 Difference]: Start difference. First operand has 166 places, 150 transitions, 376 flow. Second operand 58 states and 5558 transitions. [2022-11-18 20:56:02,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 491 transitions, 2259 flow [2022-11-18 20:56:02,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 491 transitions, 2212 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 20:56:02,638 INFO L231 Difference]: Finished difference. Result has 233 places, 245 transitions, 1058 flow [2022-11-18 20:56:02,639 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=1058, PETRI_PLACES=233, PETRI_TRANSITIONS=245} [2022-11-18 20:56:02,640 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 52 predicate places. [2022-11-18 20:56:02,640 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 245 transitions, 1058 flow [2022-11-18 20:56:02,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 91.83333333333333) internal successors, (2204), 24 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:02,661 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:02,662 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:02,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:56:02,662 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:56:02,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:02,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1449337986, now seen corresponding path program 3 times [2022-11-18 20:56:02,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:02,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46171765] [2022-11-18 20:56:02,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:02,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:05,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:05,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:05,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46171765] [2022-11-18 20:56:05,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46171765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:05,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:05,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-18 20:56:05,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675860166] [2022-11-18 20:56:05,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:05,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 20:56:05,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:05,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 20:56:05,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:56:05,944 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 195 [2022-11-18 20:56:05,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 245 transitions, 1058 flow. Second operand has 24 states, 24 states have (on average 91.83333333333333) internal successors, (2204), 24 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:05,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:05,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 195 [2022-11-18 20:56:05,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:18,681 INFO L130 PetriNetUnfolder]: 1758/3797 cut-off events. [2022-11-18 20:56:18,681 INFO L131 PetriNetUnfolder]: For 6786/6786 co-relation queries the response was YES. [2022-11-18 20:56:18,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10878 conditions, 3797 events. 1758/3797 cut-off events. For 6786/6786 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 25666 event pairs, 225 based on Foata normal form. 1/3736 useless extension candidates. Maximal degree in co-relation 10850. Up to 726 conditions per place. [2022-11-18 20:56:18,724 INFO L137 encePairwiseOnDemand]: 165/195 looper letters, 318 selfloop transitions, 141 changer transitions 0/524 dead transitions. [2022-11-18 20:56:18,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 524 transitions, 3351 flow [2022-11-18 20:56:18,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-11-18 20:56:18,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-11-18 20:56:18,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 5283 transitions. [2022-11-18 20:56:18,736 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49258741258741257 [2022-11-18 20:56:18,737 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 5283 transitions. [2022-11-18 20:56:18,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 5283 transitions. [2022-11-18 20:56:18,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:18,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 5283 transitions. [2022-11-18 20:56:18,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 96.05454545454545) internal successors, (5283), 55 states have internal predecessors, (5283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:18,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 195.0) internal successors, (10920), 56 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:18,771 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 195.0) internal successors, (10920), 56 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:18,772 INFO L175 Difference]: Start difference. First operand has 233 places, 245 transitions, 1058 flow. Second operand 55 states and 5283 transitions. [2022-11-18 20:56:18,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 524 transitions, 3351 flow [2022-11-18 20:56:18,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 524 transitions, 3139 flow, removed 36 selfloop flow, removed 11 redundant places. [2022-11-18 20:56:18,818 INFO L231 Difference]: Finished difference. Result has 298 places, 290 transitions, 1742 flow [2022-11-18 20:56:18,818 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=1742, PETRI_PLACES=298, PETRI_TRANSITIONS=290} [2022-11-18 20:56:18,819 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 117 predicate places. [2022-11-18 20:56:18,819 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 290 transitions, 1742 flow [2022-11-18 20:56:18,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 91.83333333333333) internal successors, (2204), 24 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:18,820 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:18,821 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:18,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:56:18,821 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:56:18,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:18,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1184087724, now seen corresponding path program 4 times [2022-11-18 20:56:18,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:18,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811642298] [2022-11-18 20:56:18,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:18,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:21,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:21,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:21,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811642298] [2022-11-18 20:56:21,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811642298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:21,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:21,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:56:21,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192946980] [2022-11-18 20:56:21,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:21,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:56:21,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:21,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:56:21,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:56:21,254 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 195 [2022-11-18 20:56:21,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 290 transitions, 1742 flow. Second operand has 19 states, 19 states have (on average 99.21052631578948) internal successors, (1885), 19 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:21,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:21,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 195 [2022-11-18 20:56:21,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:24,059 INFO L130 PetriNetUnfolder]: 1288/3330 cut-off events. [2022-11-18 20:56:24,060 INFO L131 PetriNetUnfolder]: For 8352/8361 co-relation queries the response was YES. [2022-11-18 20:56:24,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9726 conditions, 3330 events. 1288/3330 cut-off events. For 8352/8361 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 24976 event pairs, 127 based on Foata normal form. 6/3263 useless extension candidates. Maximal degree in co-relation 9676. Up to 953 conditions per place. [2022-11-18 20:56:24,119 INFO L137 encePairwiseOnDemand]: 169/195 looper letters, 197 selfloop transitions, 78 changer transitions 0/416 dead transitions. [2022-11-18 20:56:24,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 416 transitions, 2905 flow [2022-11-18 20:56:24,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 20:56:24,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-18 20:56:24,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2284 transitions. [2022-11-18 20:56:24,132 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5324009324009324 [2022-11-18 20:56:24,132 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2284 transitions. [2022-11-18 20:56:24,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2284 transitions. [2022-11-18 20:56:24,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:24,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2284 transitions. [2022-11-18 20:56:24,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 103.81818181818181) internal successors, (2284), 22 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:24,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 195.0) internal successors, (4485), 23 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:24,149 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 195.0) internal successors, (4485), 23 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:24,150 INFO L175 Difference]: Start difference. First operand has 298 places, 290 transitions, 1742 flow. Second operand 22 states and 2284 transitions. [2022-11-18 20:56:24,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 416 transitions, 2905 flow [2022-11-18 20:56:24,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 416 transitions, 2711 flow, removed 47 selfloop flow, removed 26 redundant places. [2022-11-18 20:56:24,221 INFO L231 Difference]: Finished difference. Result has 303 places, 321 transitions, 2097 flow [2022-11-18 20:56:24,222 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=1559, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2097, PETRI_PLACES=303, PETRI_TRANSITIONS=321} [2022-11-18 20:56:24,223 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 122 predicate places. [2022-11-18 20:56:24,224 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 321 transitions, 2097 flow [2022-11-18 20:56:24,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 99.21052631578948) internal successors, (1885), 19 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:24,225 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:24,225 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:24,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:56:24,225 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:56:24,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:24,226 INFO L85 PathProgramCache]: Analyzing trace with hash 367794626, now seen corresponding path program 5 times [2022-11-18 20:56:24,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:24,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653254213] [2022-11-18 20:56:24,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:24,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:26,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:26,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:26,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653254213] [2022-11-18 20:56:26,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653254213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:26,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:26,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:56:26,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014719179] [2022-11-18 20:56:26,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:26,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:56:26,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:26,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:56:26,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:56:26,399 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 195 [2022-11-18 20:56:26,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 321 transitions, 2097 flow. Second operand has 19 states, 19 states have (on average 99.21052631578948) internal successors, (1885), 19 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:26,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:26,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 195 [2022-11-18 20:56:26,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:29,117 INFO L130 PetriNetUnfolder]: 1529/4090 cut-off events. [2022-11-18 20:56:29,117 INFO L131 PetriNetUnfolder]: For 12203/12255 co-relation queries the response was YES. [2022-11-18 20:56:29,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12311 conditions, 4090 events. 1529/4090 cut-off events. For 12203/12255 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 32442 event pairs, 534 based on Foata normal form. 20/4009 useless extension candidates. Maximal degree in co-relation 12250. Up to 1650 conditions per place. [2022-11-18 20:56:29,188 INFO L137 encePairwiseOnDemand]: 170/195 looper letters, 227 selfloop transitions, 84 changer transitions 0/452 dead transitions. [2022-11-18 20:56:29,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 452 transitions, 3440 flow [2022-11-18 20:56:29,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:56:29,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:56:29,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2167 transitions. [2022-11-18 20:56:29,298 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5291819291819292 [2022-11-18 20:56:29,298 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2167 transitions. [2022-11-18 20:56:29,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2167 transitions. [2022-11-18 20:56:29,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:29,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2167 transitions. [2022-11-18 20:56:29,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 103.19047619047619) internal successors, (2167), 21 states have internal predecessors, (2167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:29,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 195.0) internal successors, (4290), 22 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:29,312 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 195.0) internal successors, (4290), 22 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:29,312 INFO L175 Difference]: Start difference. First operand has 303 places, 321 transitions, 2097 flow. Second operand 21 states and 2167 transitions. [2022-11-18 20:56:29,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 452 transitions, 3440 flow [2022-11-18 20:56:29,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 452 transitions, 3313 flow, removed 30 selfloop flow, removed 9 redundant places. [2022-11-18 20:56:29,410 INFO L231 Difference]: Finished difference. Result has 326 places, 357 transitions, 2585 flow [2022-11-18 20:56:29,411 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=1998, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2585, PETRI_PLACES=326, PETRI_TRANSITIONS=357} [2022-11-18 20:56:29,414 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 145 predicate places. [2022-11-18 20:56:29,415 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 357 transitions, 2585 flow [2022-11-18 20:56:29,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 99.21052631578948) internal successors, (1885), 19 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:29,416 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:29,416 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:29,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:56:29,417 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:56:29,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:29,417 INFO L85 PathProgramCache]: Analyzing trace with hash -742991826, now seen corresponding path program 6 times [2022-11-18 20:56:29,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:29,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958161945] [2022-11-18 20:56:29,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:29,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:30,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:30,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:30,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958161945] [2022-11-18 20:56:30,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958161945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:30,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:30,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 20:56:30,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525819582] [2022-11-18 20:56:30,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:30,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:56:30,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:30,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:56:30,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:56:30,731 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 195 [2022-11-18 20:56:30,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 357 transitions, 2585 flow. Second operand has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:30,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:30,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 195 [2022-11-18 20:56:30,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:32,678 INFO L130 PetriNetUnfolder]: 750/2586 cut-off events. [2022-11-18 20:56:32,678 INFO L131 PetriNetUnfolder]: For 14153/14682 co-relation queries the response was YES. [2022-11-18 20:56:32,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8852 conditions, 2586 events. 750/2586 cut-off events. For 14153/14682 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 20156 event pairs, 154 based on Foata normal form. 46/2562 useless extension candidates. Maximal degree in co-relation 8780. Up to 530 conditions per place. [2022-11-18 20:56:32,704 INFO L137 encePairwiseOnDemand]: 181/195 looper letters, 168 selfloop transitions, 94 changer transitions 0/437 dead transitions. [2022-11-18 20:56:32,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 437 transitions, 3586 flow [2022-11-18 20:56:32,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:56:32,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 20:56:32,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2140 transitions. [2022-11-18 20:56:32,709 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8441814595660749 [2022-11-18 20:56:32,709 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2140 transitions. [2022-11-18 20:56:32,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2140 transitions. [2022-11-18 20:56:32,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:32,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2140 transitions. [2022-11-18 20:56:32,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 164.6153846153846) internal successors, (2140), 13 states have internal predecessors, (2140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:32,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:32,723 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:32,723 INFO L175 Difference]: Start difference. First operand has 326 places, 357 transitions, 2585 flow. Second operand 13 states and 2140 transitions. [2022-11-18 20:56:32,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 437 transitions, 3586 flow [2022-11-18 20:56:32,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 437 transitions, 3466 flow, removed 50 selfloop flow, removed 6 redundant places. [2022-11-18 20:56:32,813 INFO L231 Difference]: Finished difference. Result has 338 places, 376 transitions, 2860 flow [2022-11-18 20:56:32,814 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=2484, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2860, PETRI_PLACES=338, PETRI_TRANSITIONS=376} [2022-11-18 20:56:32,815 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 157 predicate places. [2022-11-18 20:56:32,815 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 376 transitions, 2860 flow [2022-11-18 20:56:32,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:32,816 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:32,816 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:32,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:56:32,817 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:56:32,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:32,817 INFO L85 PathProgramCache]: Analyzing trace with hash -134836952, now seen corresponding path program 7 times [2022-11-18 20:56:32,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:32,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139162313] [2022-11-18 20:56:32,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:32,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:35,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:35,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:35,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139162313] [2022-11-18 20:56:35,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139162313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:35,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:35,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:56:35,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325275872] [2022-11-18 20:56:35,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:35,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:56:35,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:35,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:56:35,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:56:35,108 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 195 [2022-11-18 20:56:35,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 376 transitions, 2860 flow. Second operand has 19 states, 19 states have (on average 99.21052631578948) internal successors, (1885), 19 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:35,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:35,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 195 [2022-11-18 20:56:35,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:38,278 INFO L130 PetriNetUnfolder]: 1911/4925 cut-off events. [2022-11-18 20:56:38,278 INFO L131 PetriNetUnfolder]: For 21785/21842 co-relation queries the response was YES. [2022-11-18 20:56:38,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17079 conditions, 4925 events. 1911/4925 cut-off events. For 21785/21842 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 40211 event pairs, 285 based on Foata normal form. 18/4844 useless extension candidates. Maximal degree in co-relation 17001. Up to 1399 conditions per place. [2022-11-18 20:56:38,386 INFO L137 encePairwiseOnDemand]: 169/195 looper letters, 261 selfloop transitions, 101 changer transitions 0/509 dead transitions. [2022-11-18 20:56:38,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 509 transitions, 4427 flow [2022-11-18 20:56:38,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 20:56:38,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-18 20:56:38,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2284 transitions. [2022-11-18 20:56:38,392 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5324009324009324 [2022-11-18 20:56:38,392 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2284 transitions. [2022-11-18 20:56:38,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2284 transitions. [2022-11-18 20:56:38,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:38,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2284 transitions. [2022-11-18 20:56:38,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 103.81818181818181) internal successors, (2284), 22 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:38,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 195.0) internal successors, (4485), 23 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:38,407 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 195.0) internal successors, (4485), 23 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:38,408 INFO L175 Difference]: Start difference. First operand has 338 places, 376 transitions, 2860 flow. Second operand 22 states and 2284 transitions. [2022-11-18 20:56:38,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 509 transitions, 4427 flow [2022-11-18 20:56:38,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 509 transitions, 4289 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-11-18 20:56:38,608 INFO L231 Difference]: Finished difference. Result has 365 places, 414 transitions, 3552 flow [2022-11-18 20:56:38,609 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=2722, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3552, PETRI_PLACES=365, PETRI_TRANSITIONS=414} [2022-11-18 20:56:38,610 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 184 predicate places. [2022-11-18 20:56:38,610 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 414 transitions, 3552 flow [2022-11-18 20:56:38,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 99.21052631578948) internal successors, (1885), 19 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:38,611 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:38,612 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:38,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:56:38,612 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:56:38,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:38,613 INFO L85 PathProgramCache]: Analyzing trace with hash 947451330, now seen corresponding path program 8 times [2022-11-18 20:56:38,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:38,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703418927] [2022-11-18 20:56:38,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:38,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:40,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:40,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:40,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703418927] [2022-11-18 20:56:40,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703418927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:40,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:40,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:56:40,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106256622] [2022-11-18 20:56:40,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:40,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:56:40,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:40,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:56:40,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:56:40,913 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 195 [2022-11-18 20:56:40,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 414 transitions, 3552 flow. Second operand has 19 states, 19 states have (on average 99.21052631578948) internal successors, (1885), 19 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:40,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:40,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 195 [2022-11-18 20:56:40,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:45,364 INFO L130 PetriNetUnfolder]: 2543/7606 cut-off events. [2022-11-18 20:56:45,364 INFO L131 PetriNetUnfolder]: For 51892/52531 co-relation queries the response was YES. [2022-11-18 20:56:45,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26853 conditions, 7606 events. 2543/7606 cut-off events. For 51892/52531 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 73372 event pairs, 556 based on Foata normal form. 67/7420 useless extension candidates. Maximal degree in co-relation 26764. Up to 1078 conditions per place. [2022-11-18 20:56:45,468 INFO L137 encePairwiseOnDemand]: 167/195 looper letters, 308 selfloop transitions, 190 changer transitions 0/656 dead transitions. [2022-11-18 20:56:45,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 656 transitions, 7103 flow [2022-11-18 20:56:45,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 20:56:45,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-18 20:56:45,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2284 transitions. [2022-11-18 20:56:45,476 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5324009324009324 [2022-11-18 20:56:45,476 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2284 transitions. [2022-11-18 20:56:45,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2284 transitions. [2022-11-18 20:56:45,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:45,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2284 transitions. [2022-11-18 20:56:45,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 103.81818181818181) internal successors, (2284), 22 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:45,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 195.0) internal successors, (4485), 23 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:45,495 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 195.0) internal successors, (4485), 23 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:45,495 INFO L175 Difference]: Start difference. First operand has 365 places, 414 transitions, 3552 flow. Second operand 22 states and 2284 transitions. [2022-11-18 20:56:45,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 656 transitions, 7103 flow [2022-11-18 20:56:45,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 656 transitions, 6846 flow, removed 108 selfloop flow, removed 6 redundant places. [2022-11-18 20:56:45,913 INFO L231 Difference]: Finished difference. Result has 388 places, 501 transitions, 5259 flow [2022-11-18 20:56:45,914 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=3369, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=5259, PETRI_PLACES=388, PETRI_TRANSITIONS=501} [2022-11-18 20:56:45,916 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 207 predicate places. [2022-11-18 20:56:45,916 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 501 transitions, 5259 flow [2022-11-18 20:56:45,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 99.21052631578948) internal successors, (1885), 19 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:45,917 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:45,918 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:45,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:56:45,918 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:56:45,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:45,919 INFO L85 PathProgramCache]: Analyzing trace with hash 116277022, now seen corresponding path program 9 times [2022-11-18 20:56:45,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:45,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650148464] [2022-11-18 20:56:45,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:45,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:45,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:47,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:47,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:47,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650148464] [2022-11-18 20:56:47,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650148464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:47,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:47,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 20:56:47,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762901698] [2022-11-18 20:56:47,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:47,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:56:47,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:47,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:56:47,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:56:47,076 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 195 [2022-11-18 20:56:47,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 501 transitions, 5259 flow. Second operand has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:47,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:47,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 195 [2022-11-18 20:56:47,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:50,742 INFO L130 PetriNetUnfolder]: 1606/6657 cut-off events. [2022-11-18 20:56:50,742 INFO L131 PetriNetUnfolder]: For 68341/73614 co-relation queries the response was YES. [2022-11-18 20:56:50,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25343 conditions, 6657 events. 1606/6657 cut-off events. For 68341/73614 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 69418 event pairs, 629 based on Foata normal form. 84/6592 useless extension candidates. Maximal degree in co-relation 25245. Up to 1748 conditions per place. [2022-11-18 20:56:50,837 INFO L137 encePairwiseOnDemand]: 181/195 looper letters, 259 selfloop transitions, 97 changer transitions 0/629 dead transitions. [2022-11-18 20:56:50,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 629 transitions, 7032 flow [2022-11-18 20:56:50,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:56:50,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 20:56:50,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2151 transitions. [2022-11-18 20:56:50,841 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8485207100591716 [2022-11-18 20:56:50,842 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2151 transitions. [2022-11-18 20:56:50,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2151 transitions. [2022-11-18 20:56:50,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:50,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2151 transitions. [2022-11-18 20:56:50,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 165.46153846153845) internal successors, (2151), 13 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:50,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:50,853 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:50,853 INFO L175 Difference]: Start difference. First operand has 388 places, 501 transitions, 5259 flow. Second operand 13 states and 2151 transitions. [2022-11-18 20:56:50,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 629 transitions, 7032 flow [2022-11-18 20:56:51,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 629 transitions, 6717 flow, removed 87 selfloop flow, removed 9 redundant places. [2022-11-18 20:56:51,249 INFO L231 Difference]: Finished difference. Result has 397 places, 523 transitions, 5436 flow [2022-11-18 20:56:51,249 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=4944, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5436, PETRI_PLACES=397, PETRI_TRANSITIONS=523} [2022-11-18 20:56:51,250 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 216 predicate places. [2022-11-18 20:56:51,250 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 523 transitions, 5436 flow [2022-11-18 20:56:51,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:51,251 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:51,251 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:51,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:56:51,251 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:56:51,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:51,252 INFO L85 PathProgramCache]: Analyzing trace with hash -2047692766, now seen corresponding path program 10 times [2022-11-18 20:56:51,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:51,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415290093] [2022-11-18 20:56:51,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:51,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:52,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:52,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:52,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415290093] [2022-11-18 20:56:52,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415290093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:52,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:52,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 20:56:52,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998762746] [2022-11-18 20:56:52,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:52,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:56:52,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:52,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:56:52,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:56:52,396 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 195 [2022-11-18 20:56:52,398 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 523 transitions, 5436 flow. Second operand has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:52,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:52,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 195 [2022-11-18 20:56:52,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:56,528 INFO L130 PetriNetUnfolder]: 1824/7246 cut-off events. [2022-11-18 20:56:56,528 INFO L131 PetriNetUnfolder]: For 64465/76880 co-relation queries the response was YES. [2022-11-18 20:56:56,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28784 conditions, 7246 events. 1824/7246 cut-off events. For 64465/76880 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 76184 event pairs, 628 based on Foata normal form. 100/7162 useless extension candidates. Maximal degree in co-relation 28679. Up to 1748 conditions per place. [2022-11-18 20:56:56,622 INFO L137 encePairwiseOnDemand]: 181/195 looper letters, 263 selfloop transitions, 105 changer transitions 0/641 dead transitions. [2022-11-18 20:56:56,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 641 transitions, 7218 flow [2022-11-18 20:56:56,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:56:56,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 20:56:56,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2150 transitions. [2022-11-18 20:56:56,627 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8481262327416174 [2022-11-18 20:56:56,627 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2150 transitions. [2022-11-18 20:56:56,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2150 transitions. [2022-11-18 20:56:56,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:56,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2150 transitions. [2022-11-18 20:56:56,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 165.3846153846154) internal successors, (2150), 13 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:56,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:56,638 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:56,638 INFO L175 Difference]: Start difference. First operand has 397 places, 523 transitions, 5436 flow. Second operand 13 states and 2150 transitions. [2022-11-18 20:56:56,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 641 transitions, 7218 flow [2022-11-18 20:56:57,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 641 transitions, 7048 flow, removed 21 selfloop flow, removed 5 redundant places. [2022-11-18 20:56:57,092 INFO L231 Difference]: Finished difference. Result has 410 places, 543 transitions, 5834 flow [2022-11-18 20:56:57,093 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=5270, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5834, PETRI_PLACES=410, PETRI_TRANSITIONS=543} [2022-11-18 20:56:57,094 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 229 predicate places. [2022-11-18 20:56:57,095 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 543 transitions, 5834 flow [2022-11-18 20:56:57,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:57,096 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:57,096 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:57,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:56:57,096 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:56:57,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:57,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1779055120, now seen corresponding path program 11 times [2022-11-18 20:56:57,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:57,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650945196] [2022-11-18 20:56:57,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:57,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:58,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:58,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:58,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650945196] [2022-11-18 20:56:58,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650945196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:58,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:58,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 20:56:58,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463356847] [2022-11-18 20:56:58,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:58,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:56:58,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:58,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:56:58,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:56:58,328 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 195 [2022-11-18 20:56:58,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 543 transitions, 5834 flow. Second operand has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:58,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:58,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 195 [2022-11-18 20:56:58,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:57:02,282 INFO L130 PetriNetUnfolder]: 1682/6870 cut-off events. [2022-11-18 20:57:02,282 INFO L131 PetriNetUnfolder]: For 66179/77010 co-relation queries the response was YES. [2022-11-18 20:57:02,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28148 conditions, 6870 events. 1682/6870 cut-off events. For 66179/77010 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 72071 event pairs, 616 based on Foata normal form. 107/6808 useless extension candidates. Maximal degree in co-relation 28037. Up to 1748 conditions per place. [2022-11-18 20:57:02,375 INFO L137 encePairwiseOnDemand]: 181/195 looper letters, 276 selfloop transitions, 104 changer transitions 0/653 dead transitions. [2022-11-18 20:57:02,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 653 transitions, 7637 flow [2022-11-18 20:57:02,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:57:02,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 20:57:02,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2151 transitions. [2022-11-18 20:57:02,380 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8485207100591716 [2022-11-18 20:57:02,380 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2151 transitions. [2022-11-18 20:57:02,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2151 transitions. [2022-11-18 20:57:02,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:57:02,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2151 transitions. [2022-11-18 20:57:02,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 165.46153846153845) internal successors, (2151), 13 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:02,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:02,391 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:02,393 INFO L175 Difference]: Start difference. First operand has 410 places, 543 transitions, 5834 flow. Second operand 13 states and 2151 transitions. [2022-11-18 20:57:02,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 653 transitions, 7637 flow [2022-11-18 20:57:02,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 653 transitions, 7433 flow, removed 28 selfloop flow, removed 6 redundant places. [2022-11-18 20:57:02,892 INFO L231 Difference]: Finished difference. Result has 421 places, 558 transitions, 6163 flow [2022-11-18 20:57:02,893 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=5602, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6163, PETRI_PLACES=421, PETRI_TRANSITIONS=558} [2022-11-18 20:57:02,894 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 240 predicate places. [2022-11-18 20:57:02,894 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 558 transitions, 6163 flow [2022-11-18 20:57:02,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:02,895 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:57:02,896 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:57:02,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:57:02,896 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:57:02,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:02,897 INFO L85 PathProgramCache]: Analyzing trace with hash 180859202, now seen corresponding path program 12 times [2022-11-18 20:57:02,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:02,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87762534] [2022-11-18 20:57:02,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:02,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:04,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:04,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:04,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87762534] [2022-11-18 20:57:04,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87762534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:04,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:57:04,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 20:57:04,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001500335] [2022-11-18 20:57:04,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:04,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:57:04,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:04,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:57:04,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:57:04,006 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 195 [2022-11-18 20:57:04,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 558 transitions, 6163 flow. Second operand has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:04,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:57:04,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 195 [2022-11-18 20:57:04,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:57:07,750 INFO L130 PetriNetUnfolder]: 1663/6969 cut-off events. [2022-11-18 20:57:07,750 INFO L131 PetriNetUnfolder]: For 72321/84888 co-relation queries the response was YES. [2022-11-18 20:57:07,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28916 conditions, 6969 events. 1663/6969 cut-off events. For 72321/84888 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 73781 event pairs, 529 based on Foata normal form. 98/6905 useless extension candidates. Maximal degree in co-relation 28800. Up to 1748 conditions per place. [2022-11-18 20:57:07,860 INFO L137 encePairwiseOnDemand]: 181/195 looper letters, 236 selfloop transitions, 144 changer transitions 0/653 dead transitions. [2022-11-18 20:57:07,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 653 transitions, 7752 flow [2022-11-18 20:57:07,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:57:07,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 20:57:07,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2151 transitions. [2022-11-18 20:57:07,864 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8485207100591716 [2022-11-18 20:57:07,865 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2151 transitions. [2022-11-18 20:57:07,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2151 transitions. [2022-11-18 20:57:07,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:57:07,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2151 transitions. [2022-11-18 20:57:07,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 165.46153846153845) internal successors, (2151), 13 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:07,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:07,875 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:07,875 INFO L175 Difference]: Start difference. First operand has 421 places, 558 transitions, 6163 flow. Second operand 13 states and 2151 transitions. [2022-11-18 20:57:07,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 653 transitions, 7752 flow [2022-11-18 20:57:08,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 653 transitions, 7498 flow, removed 49 selfloop flow, removed 7 redundant places. [2022-11-18 20:57:08,399 INFO L231 Difference]: Finished difference. Result has 430 places, 571 transitions, 6556 flow [2022-11-18 20:57:08,400 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=5909, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6556, PETRI_PLACES=430, PETRI_TRANSITIONS=571} [2022-11-18 20:57:08,401 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 249 predicate places. [2022-11-18 20:57:08,401 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 571 transitions, 6556 flow [2022-11-18 20:57:08,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:08,402 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:57:08,402 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:57:08,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:57:08,402 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:57:08,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:08,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1483633024, now seen corresponding path program 13 times [2022-11-18 20:57:08,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:08,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180930249] [2022-11-18 20:57:08,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:08,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:09,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:09,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:09,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180930249] [2022-11-18 20:57:09,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180930249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:09,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:57:09,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 20:57:09,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166386360] [2022-11-18 20:57:09,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:09,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:57:09,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:09,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:57:09,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:57:09,370 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 195 [2022-11-18 20:57:09,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 571 transitions, 6556 flow. Second operand has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:09,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:57:09,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 195 [2022-11-18 20:57:09,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:57:12,991 INFO L130 PetriNetUnfolder]: 1481/6116 cut-off events. [2022-11-18 20:57:12,991 INFO L131 PetriNetUnfolder]: For 70322/81452 co-relation queries the response was YES. [2022-11-18 20:57:13,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26659 conditions, 6116 events. 1481/6116 cut-off events. For 70322/81452 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 62304 event pairs, 536 based on Foata normal form. 78/6037 useless extension candidates. Maximal degree in co-relation 26539. Up to 1748 conditions per place. [2022-11-18 20:57:13,086 INFO L137 encePairwiseOnDemand]: 182/195 looper letters, 244 selfloop transitions, 123 changer transitions 0/640 dead transitions. [2022-11-18 20:57:13,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 640 transitions, 7870 flow [2022-11-18 20:57:13,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:57:13,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 20:57:13,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2144 transitions. [2022-11-18 20:57:13,092 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8457593688362919 [2022-11-18 20:57:13,092 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2144 transitions. [2022-11-18 20:57:13,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2144 transitions. [2022-11-18 20:57:13,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:57:13,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2144 transitions. [2022-11-18 20:57:13,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 164.92307692307693) internal successors, (2144), 13 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:13,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:13,106 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:13,106 INFO L175 Difference]: Start difference. First operand has 430 places, 571 transitions, 6556 flow. Second operand 13 states and 2144 transitions. [2022-11-18 20:57:13,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 640 transitions, 7870 flow [2022-11-18 20:57:13,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 640 transitions, 7598 flow, removed 49 selfloop flow, removed 8 redundant places. [2022-11-18 20:57:13,517 INFO L231 Difference]: Finished difference. Result has 437 places, 577 transitions, 6734 flow [2022-11-18 20:57:13,518 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=6264, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6734, PETRI_PLACES=437, PETRI_TRANSITIONS=577} [2022-11-18 20:57:13,518 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 256 predicate places. [2022-11-18 20:57:13,519 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 577 transitions, 6734 flow [2022-11-18 20:57:13,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:13,519 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:57:13,519 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:57:13,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:57:13,520 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:57:13,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:13,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1912337188, now seen corresponding path program 14 times [2022-11-18 20:57:13,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:13,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760449623] [2022-11-18 20:57:13,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:13,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:15,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:15,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:15,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760449623] [2022-11-18 20:57:15,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760449623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:15,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:57:15,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 20:57:15,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145568702] [2022-11-18 20:57:15,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:15,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:57:15,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:15,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:57:15,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:57:15,307 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 195 [2022-11-18 20:57:15,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 577 transitions, 6734 flow. Second operand has 15 states, 15 states have (on average 149.33333333333334) internal successors, (2240), 15 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:15,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:57:15,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 195 [2022-11-18 20:57:15,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:57:21,214 INFO L130 PetriNetUnfolder]: 2608/10175 cut-off events. [2022-11-18 20:57:21,214 INFO L131 PetriNetUnfolder]: For 157481/223580 co-relation queries the response was YES. [2022-11-18 20:57:21,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42963 conditions, 10175 events. 2608/10175 cut-off events. For 157481/223580 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 116072 event pairs, 1140 based on Foata normal form. 263/10159 useless extension candidates. Maximal degree in co-relation 42840. Up to 2059 conditions per place. [2022-11-18 20:57:21,456 INFO L137 encePairwiseOnDemand]: 179/195 looper letters, 480 selfloop transitions, 117 changer transitions 0/827 dead transitions. [2022-11-18 20:57:21,456 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 827 transitions, 11356 flow [2022-11-18 20:57:21,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:57:21,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 20:57:21,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2649 transitions. [2022-11-18 20:57:21,462 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7990950226244344 [2022-11-18 20:57:21,462 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2649 transitions. [2022-11-18 20:57:21,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2649 transitions. [2022-11-18 20:57:21,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:57:21,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2649 transitions. [2022-11-18 20:57:21,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 155.8235294117647) internal successors, (2649), 17 states have internal predecessors, (2649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:21,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 195.0) internal successors, (3510), 18 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:21,478 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 195.0) internal successors, (3510), 18 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:21,478 INFO L175 Difference]: Start difference. First operand has 437 places, 577 transitions, 6734 flow. Second operand 17 states and 2649 transitions. [2022-11-18 20:57:21,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 827 transitions, 11356 flow [2022-11-18 20:57:22,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 827 transitions, 11086 flow, removed 21 selfloop flow, removed 9 redundant places. [2022-11-18 20:57:22,112 INFO L231 Difference]: Finished difference. Result has 451 places, 625 transitions, 7418 flow [2022-11-18 20:57:22,113 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=6486, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7418, PETRI_PLACES=451, PETRI_TRANSITIONS=625} [2022-11-18 20:57:22,113 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 270 predicate places. [2022-11-18 20:57:22,113 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 625 transitions, 7418 flow [2022-11-18 20:57:22,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 149.33333333333334) internal successors, (2240), 15 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:22,114 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:57:22,114 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:57:22,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 20:57:22,114 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:57:22,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:22,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1083972018, now seen corresponding path program 15 times [2022-11-18 20:57:22,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:22,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995580478] [2022-11-18 20:57:22,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:22,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:23,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:23,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:23,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995580478] [2022-11-18 20:57:23,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995580478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:23,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:57:23,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 20:57:23,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577775168] [2022-11-18 20:57:23,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:23,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:57:23,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:23,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:57:23,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:57:23,337 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 195 [2022-11-18 20:57:23,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 625 transitions, 7418 flow. Second operand has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:23,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:57:23,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 195 [2022-11-18 20:57:23,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:57:29,589 INFO L130 PetriNetUnfolder]: 2858/11898 cut-off events. [2022-11-18 20:57:29,589 INFO L131 PetriNetUnfolder]: For 115262/139586 co-relation queries the response was YES. [2022-11-18 20:57:29,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50092 conditions, 11898 events. 2858/11898 cut-off events. For 115262/139586 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 140752 event pairs, 1222 based on Foata normal form. 117/11700 useless extension candidates. Maximal degree in co-relation 49962. Up to 1890 conditions per place. [2022-11-18 20:57:29,904 INFO L137 encePairwiseOnDemand]: 181/195 looper letters, 431 selfloop transitions, 94 changer transitions 0/813 dead transitions. [2022-11-18 20:57:29,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 813 transitions, 10300 flow [2022-11-18 20:57:29,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:57:29,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 20:57:29,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2167 transitions. [2022-11-18 20:57:29,909 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8548323471400394 [2022-11-18 20:57:29,910 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2167 transitions. [2022-11-18 20:57:29,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2167 transitions. [2022-11-18 20:57:29,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:57:29,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2167 transitions. [2022-11-18 20:57:29,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 166.69230769230768) internal successors, (2167), 13 states have internal predecessors, (2167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:29,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:29,922 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:29,922 INFO L175 Difference]: Start difference. First operand has 451 places, 625 transitions, 7418 flow. Second operand 13 states and 2167 transitions. [2022-11-18 20:57:29,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 813 transitions, 10300 flow [2022-11-18 20:57:30,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 813 transitions, 10104 flow, removed 51 selfloop flow, removed 5 redundant places. [2022-11-18 20:57:30,917 INFO L231 Difference]: Finished difference. Result has 464 places, 645 transitions, 7803 flow [2022-11-18 20:57:30,917 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=7240, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7803, PETRI_PLACES=464, PETRI_TRANSITIONS=645} [2022-11-18 20:57:30,918 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 283 predicate places. [2022-11-18 20:57:30,918 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 645 transitions, 7803 flow [2022-11-18 20:57:30,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:30,919 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:57:30,920 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:57:30,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 20:57:30,920 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:57:30,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:30,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1543815610, now seen corresponding path program 16 times [2022-11-18 20:57:30,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:30,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691441943] [2022-11-18 20:57:30,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:30,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:32,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:32,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:32,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691441943] [2022-11-18 20:57:32,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691441943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:32,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:57:32,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 20:57:32,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225883469] [2022-11-18 20:57:32,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:32,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:57:32,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:32,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:57:32,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:57:32,212 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 195 [2022-11-18 20:57:32,214 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 645 transitions, 7803 flow. Second operand has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:32,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:57:32,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 195 [2022-11-18 20:57:32,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:57:38,850 INFO L130 PetriNetUnfolder]: 2929/12002 cut-off events. [2022-11-18 20:57:38,850 INFO L131 PetriNetUnfolder]: For 125334/151459 co-relation queries the response was YES. [2022-11-18 20:57:39,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52243 conditions, 12002 events. 2929/12002 cut-off events. For 125334/151459 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 141616 event pairs, 1177 based on Foata normal form. 116/11799 useless extension candidates. Maximal degree in co-relation 52107. Up to 2861 conditions per place. [2022-11-18 20:57:39,152 INFO L137 encePairwiseOnDemand]: 181/195 looper letters, 429 selfloop transitions, 99 changer transitions 0/816 dead transitions. [2022-11-18 20:57:39,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 816 transitions, 10672 flow [2022-11-18 20:57:39,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:57:39,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 20:57:39,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2158 transitions. [2022-11-18 20:57:39,156 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8512820512820513 [2022-11-18 20:57:39,156 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2158 transitions. [2022-11-18 20:57:39,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2158 transitions. [2022-11-18 20:57:39,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:57:39,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2158 transitions. [2022-11-18 20:57:39,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 166.0) internal successors, (2158), 13 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:39,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:39,166 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:39,166 INFO L175 Difference]: Start difference. First operand has 464 places, 645 transitions, 7803 flow. Second operand 13 states and 2158 transitions. [2022-11-18 20:57:39,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 816 transitions, 10672 flow [2022-11-18 20:57:40,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 816 transitions, 10455 flow, removed 45 selfloop flow, removed 6 redundant places. [2022-11-18 20:57:40,043 INFO L231 Difference]: Finished difference. Result has 476 places, 667 transitions, 8235 flow [2022-11-18 20:57:40,043 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=7598, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=549, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8235, PETRI_PLACES=476, PETRI_TRANSITIONS=667} [2022-11-18 20:57:40,044 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 295 predicate places. [2022-11-18 20:57:40,044 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 667 transitions, 8235 flow [2022-11-18 20:57:40,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:40,045 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:57:40,045 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:57:40,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 20:57:40,045 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:57:40,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:40,046 INFO L85 PathProgramCache]: Analyzing trace with hash 244208756, now seen corresponding path program 17 times [2022-11-18 20:57:40,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:40,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631216693] [2022-11-18 20:57:40,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:40,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:40,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:41,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:41,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:41,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631216693] [2022-11-18 20:57:41,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631216693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:41,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:57:41,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 20:57:41,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783718861] [2022-11-18 20:57:41,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:41,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:57:41,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:41,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:57:41,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:57:41,391 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 195 [2022-11-18 20:57:41,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 667 transitions, 8235 flow. Second operand has 15 states, 15 states have (on average 149.33333333333334) internal successors, (2240), 15 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:41,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:57:41,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 195 [2022-11-18 20:57:41,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:57:48,673 INFO L130 PetriNetUnfolder]: 3204/12437 cut-off events. [2022-11-18 20:57:48,673 INFO L131 PetriNetUnfolder]: For 217364/359708 co-relation queries the response was YES. [2022-11-18 20:57:48,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57204 conditions, 12437 events. 3204/12437 cut-off events. For 217364/359708 co-relation queries the response was YES. Maximal size of possible extension queue 678. Compared 147601 event pairs, 1581 based on Foata normal form. 281/12357 useless extension candidates. Maximal degree in co-relation 57062. Up to 2059 conditions per place. [2022-11-18 20:57:49,035 INFO L137 encePairwiseOnDemand]: 179/195 looper letters, 555 selfloop transitions, 127 changer transitions 0/912 dead transitions. [2022-11-18 20:57:49,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 912 transitions, 13288 flow [2022-11-18 20:57:49,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:57:49,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:57:49,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2807 transitions. [2022-11-18 20:57:49,041 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7997150997150997 [2022-11-18 20:57:49,042 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2807 transitions. [2022-11-18 20:57:49,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2807 transitions. [2022-11-18 20:57:49,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:57:49,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2807 transitions. [2022-11-18 20:57:49,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 155.94444444444446) internal successors, (2807), 18 states have internal predecessors, (2807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:49,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 195.0) internal successors, (3705), 19 states have internal predecessors, (3705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:49,060 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 195.0) internal successors, (3705), 19 states have internal predecessors, (3705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:49,061 INFO L175 Difference]: Start difference. First operand has 476 places, 667 transitions, 8235 flow. Second operand 18 states and 2807 transitions. [2022-11-18 20:57:49,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 912 transitions, 13288 flow [2022-11-18 20:57:50,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 912 transitions, 13057 flow, removed 59 selfloop flow, removed 5 redundant places. [2022-11-18 20:57:50,481 INFO L231 Difference]: Finished difference. Result has 493 places, 686 transitions, 8676 flow [2022-11-18 20:57:50,482 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=7972, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=665, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8676, PETRI_PLACES=493, PETRI_TRANSITIONS=686} [2022-11-18 20:57:50,482 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 312 predicate places. [2022-11-18 20:57:50,483 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 686 transitions, 8676 flow [2022-11-18 20:57:50,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 149.33333333333334) internal successors, (2240), 15 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:50,483 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:57:50,484 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:57:50,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 20:57:50,484 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-18 20:57:50,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:50,485 INFO L85 PathProgramCache]: Analyzing trace with hash -777575870, now seen corresponding path program 18 times [2022-11-18 20:57:50,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:50,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443008179] [2022-11-18 20:57:50,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:50,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:51,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:51,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:51,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443008179] [2022-11-18 20:57:51,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443008179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:51,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:57:51,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 20:57:51,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394109803] [2022-11-18 20:57:51,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:51,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:57:51,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:51,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:57:51,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:57:51,327 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 195 [2022-11-18 20:57:51,329 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 686 transitions, 8676 flow. Second operand has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:51,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:57:51,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 195 [2022-11-18 20:57:51,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand