./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-2_2-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a64435-cd7c-40c8-9699-b1203a566784/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a64435-cd7c-40c8-9699-b1203a566784/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a64435-cd7c-40c8-9699-b1203a566784/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a64435-cd7c-40c8-9699-b1203a566784/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-2_2-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a64435-cd7c-40c8-9699-b1203a566784/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a64435-cd7c-40c8-9699-b1203a566784/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dbdd132d1a656eb04120c9309772a096548e218c86a32fc06dd93d5ae981c163 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:21:54,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:21:54,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:21:54,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:21:54,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:21:54,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:21:54,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:21:54,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:21:54,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:21:54,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:21:54,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:21:54,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:21:54,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:21:54,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:21:54,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:21:54,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:21:54,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:21:54,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:21:54,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:21:54,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:21:54,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:21:54,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:21:54,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:21:54,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:21:54,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:21:54,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:21:54,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:21:54,101 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:21:54,102 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:21:54,103 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:21:54,103 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:21:54,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:21:54,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:21:54,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:21:54,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:21:54,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:21:54,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:21:54,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:21:54,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:21:54,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:21:54,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:21:54,109 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a64435-cd7c-40c8-9699-b1203a566784/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 19:21:54,131 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:21:54,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:21:54,132 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:21:54,132 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:21:54,133 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:21:54,133 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:21:54,133 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:21:54,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:21:54,134 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:21:54,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:21:54,134 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 19:21:54,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:21:54,134 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 19:21:54,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:21:54,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 19:21:54,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:21:54,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 19:21:54,135 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 19:21:54,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 19:21:54,136 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:21:54,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 19:21:54,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:21:54,136 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:21:54,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:21:54,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:21:54,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:21:54,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:21:54,137 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 19:21:54,137 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:21:54,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 19:21:54,138 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 19:21:54,138 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 19:21:54,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 19:21:54,138 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:21:54,138 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_17a64435-cd7c-40c8-9699-b1203a566784/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a64435-cd7c-40c8-9699-b1203a566784/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbdd132d1a656eb04120c9309772a096548e218c86a32fc06dd93d5ae981c163 [2021-12-06 19:21:54,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:21:54,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:21:54,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:21:54,346 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:21:54,347 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:21:54,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a64435-cd7c-40c8-9699-b1203a566784/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-races/race-2_2-container_of.i [2021-12-06 19:21:54,387 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a64435-cd7c-40c8-9699-b1203a566784/bin/uautomizer-DrprNOufMa/data/b561ce3d6/b7e4c640d571461ea3d75e4934d2bcbe/FLAG30b498811 [2021-12-06 19:21:54,852 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:21:54,853 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a64435-cd7c-40c8-9699-b1203a566784/sv-benchmarks/c/ldv-races/race-2_2-container_of.i [2021-12-06 19:21:54,869 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a64435-cd7c-40c8-9699-b1203a566784/bin/uautomizer-DrprNOufMa/data/b561ce3d6/b7e4c640d571461ea3d75e4934d2bcbe/FLAG30b498811 [2021-12-06 19:21:54,881 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a64435-cd7c-40c8-9699-b1203a566784/bin/uautomizer-DrprNOufMa/data/b561ce3d6/b7e4c640d571461ea3d75e4934d2bcbe [2021-12-06 19:21:54,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:21:54,883 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:21:54,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:21:54,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:21:54,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:21:54,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:21:54" (1/1) ... [2021-12-06 19:21:54,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e8eb0f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:21:54, skipping insertion in model container [2021-12-06 19:21:54,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:21:54" (1/1) ... [2021-12-06 19:21:54,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:21:54,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:21:55,050 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-12-06 19:21:55,377 WARN L230 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_17a64435-cd7c-40c8-9699-b1203a566784/sv-benchmarks/c/ldv-races/race-2_2-container_of.i[75002,75015] [2021-12-06 19:21:55,406 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:21:55,412 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:21:55,420 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-12-06 19:21:55,444 WARN L230 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_17a64435-cd7c-40c8-9699-b1203a566784/sv-benchmarks/c/ldv-races/race-2_2-container_of.i[75002,75015] [2021-12-06 19:21:55,455 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:21:55,530 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:21:55,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:21:55 WrapperNode [2021-12-06 19:21:55,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:21:55,532 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:21:55,532 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:21:55,532 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:21:55,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:21:55" (1/1) ... [2021-12-06 19:21:55,564 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:21:55" (1/1) ... [2021-12-06 19:21:55,588 INFO L137 Inliner]: procedures = 468, calls = 48, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 115 [2021-12-06 19:21:55,588 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:21:55,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:21:55,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:21:55,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:21:55,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:21:55" (1/1) ... [2021-12-06 19:21:55,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:21:55" (1/1) ... [2021-12-06 19:21:55,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:21:55" (1/1) ... [2021-12-06 19:21:55,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:21:55" (1/1) ... [2021-12-06 19:21:55,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:21:55" (1/1) ... [2021-12-06 19:21:55,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:21:55" (1/1) ... [2021-12-06 19:21:55,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:21:55" (1/1) ... [2021-12-06 19:21:55,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:21:55,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:21:55,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:21:55,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:21:55,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:21:55" (1/1) ... [2021-12-06 19:21:55,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:21:55,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a64435-cd7c-40c8-9699-b1203a566784/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:21:55,651 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a64435-cd7c-40c8-9699-b1203a566784/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:21:55,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a64435-cd7c-40c8-9699-b1203a566784/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:21:55,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-06 19:21:55,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 19:21:55,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-06 19:21:55,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 19:21:55,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 19:21:55,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 19:21:55,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:21:55,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:21:55,681 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2021-12-06 19:21:55,681 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2021-12-06 19:21:55,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 19:21:55,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 19:21:55,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 19:21:55,683 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-06 19:21:55,862 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:21:55,864 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:21:56,024 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:21:56,039 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:21:56,039 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 19:21:56,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:21:56 BoogieIcfgContainer [2021-12-06 19:21:56,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:21:56,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:21:56,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:21:56,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:21:56,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:21:54" (1/3) ... [2021-12-06 19:21:56,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c54df4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:21:56, skipping insertion in model container [2021-12-06 19:21:56,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:21:55" (2/3) ... [2021-12-06 19:21:56,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c54df4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:21:56, skipping insertion in model container [2021-12-06 19:21:56,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:21:56" (3/3) ... [2021-12-06 19:21:56,047 INFO L111 eAbstractionObserver]: Analyzing ICFG race-2_2-container_of.i [2021-12-06 19:21:56,051 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-06 19:21:56,051 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:21:56,051 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-06 19:21:56,051 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-06 19:21:56,075 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,075 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,075 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,075 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,075 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,076 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,076 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,076 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,076 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,076 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,076 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,076 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,076 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,076 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,077 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,077 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,077 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,077 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,077 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,077 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,077 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,077 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,077 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,078 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,078 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,078 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,078 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,078 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,078 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,078 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,078 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,079 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,079 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,079 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,079 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,079 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,079 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,079 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,080 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,080 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,080 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,080 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,080 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,080 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,080 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,080 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,081 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,081 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,081 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,081 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,081 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,081 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,081 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,081 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,082 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,082 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,082 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,082 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,082 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,082 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,082 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,082 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,082 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,082 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,083 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,083 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,083 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,083 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,083 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,083 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,083 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,083 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,083 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,083 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,083 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,084 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,084 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,084 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,084 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,084 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,084 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,084 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,084 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,084 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,084 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,084 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,085 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,085 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,085 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,085 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,085 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,085 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,085 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,085 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,085 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,085 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,086 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,086 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,086 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,086 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,086 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,086 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,086 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,086 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,086 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,086 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,087 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,087 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,087 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,087 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,087 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,087 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,087 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,087 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,087 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,087 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,090 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,090 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,090 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,090 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,090 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,090 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,090 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,090 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,091 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,091 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,091 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,091 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,092 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,092 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,092 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,092 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,092 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,092 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,092 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,092 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,092 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,092 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,093 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,093 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:21:56,094 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-12-06 19:21:56,130 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:21:56,136 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 19:21:56,136 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-06 19:21:56,147 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 163 places, 163 transitions, 342 flow [2021-12-06 19:21:56,194 INFO L129 PetriNetUnfolder]: 8/208 cut-off events. [2021-12-06 19:21:56,195 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-06 19:21:56,198 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 208 events. 8/208 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 345 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 113. Up to 4 conditions per place. [2021-12-06 19:21:56,198 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 163 transitions, 342 flow [2021-12-06 19:21:56,204 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 149 transitions, 310 flow [2021-12-06 19:21:56,224 INFO L129 PetriNetUnfolder]: 0/104 cut-off events. [2021-12-06 19:21:56,224 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-06 19:21:56,224 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:21:56,225 INFO L254 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] [2021-12-06 19:21:56,226 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-06 19:21:56,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:21:56,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1084366875, now seen corresponding path program 1 times [2021-12-06 19:21:56,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:21:56,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691507288] [2021-12-06 19:21:56,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:21:56,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:21:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:21:56,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:21:56,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:21:56,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691507288] [2021-12-06 19:21:56,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691507288] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:21:56,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:21:56,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:21:56,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072140430] [2021-12-06 19:21:56,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:21:56,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:21:56,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:21:56,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:21:56,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:21:56,647 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 163 [2021-12-06 19:21:56,652 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 149 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 102.66666666666667) internal successors, (616), 6 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:21:56,652 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:21:56,652 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 163 [2021-12-06 19:21:56,653 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:21:57,198 INFO L129 PetriNetUnfolder]: 832/1897 cut-off events. [2021-12-06 19:21:57,199 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2021-12-06 19:21:57,205 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3382 conditions, 1897 events. 832/1897 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11884 event pairs, 187 based on Foata normal form. 17/1861 useless extension candidates. Maximal degree in co-relation 3159. Up to 598 conditions per place. [2021-12-06 19:21:57,220 INFO L132 encePairwiseOnDemand]: 143/163 looper letters, 98 selfloop transitions, 44 changer transitions 0/233 dead transitions. [2021-12-06 19:21:57,220 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 233 transitions, 762 flow [2021-12-06 19:21:57,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 19:21:57,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-12-06 19:21:57,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1547 transitions. [2021-12-06 19:21:57,242 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6779141104294478 [2021-12-06 19:21:57,243 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1547 transitions. [2021-12-06 19:21:57,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1547 transitions. [2021-12-06 19:21:57,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:21:57,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1547 transitions. [2021-12-06 19:21:57,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 110.5) internal successors, (1547), 14 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:21:57,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 163.0) internal successors, (2445), 15 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:21:57,271 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 163.0) internal successors, (2445), 15 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:21:57,273 INFO L186 Difference]: Start difference. First operand has 151 places, 149 transitions, 310 flow. Second operand 14 states and 1547 transitions. [2021-12-06 19:21:57,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 233 transitions, 762 flow [2021-12-06 19:21:57,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 233 transitions, 754 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-06 19:21:57,282 INFO L242 Difference]: Finished difference. Result has 165 places, 182 transitions, 580 flow [2021-12-06 19:21:57,283 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=580, PETRI_PLACES=165, PETRI_TRANSITIONS=182} [2021-12-06 19:21:57,286 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 14 predicate places. [2021-12-06 19:21:57,286 INFO L470 AbstractCegarLoop]: Abstraction has has 165 places, 182 transitions, 580 flow [2021-12-06 19:21:57,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 102.66666666666667) internal successors, (616), 6 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:21:57,287 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:21:57,287 INFO L254 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] [2021-12-06 19:21:57,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 19:21:57,287 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-06 19:21:57,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:21:57,288 INFO L85 PathProgramCache]: Analyzing trace with hash 234520064, now seen corresponding path program 1 times [2021-12-06 19:21:57,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:21:57,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935943621] [2021-12-06 19:21:57,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:21:57,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:21:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:21:57,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:21:57,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:21:57,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935943621] [2021-12-06 19:21:57,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935943621] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:21:57,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:21:57,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:21:57,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696204947] [2021-12-06 19:21:57,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:21:57,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:21:57,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:21:57,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:21:57,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:21:57,409 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 163 [2021-12-06 19:21:57,411 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 182 transitions, 580 flow. Second operand has 6 states, 6 states have (on average 103.5) internal successors, (621), 6 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:21:57,411 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:21:57,411 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 163 [2021-12-06 19:21:57,411 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:21:57,945 INFO L129 PetriNetUnfolder]: 1083/2490 cut-off events. [2021-12-06 19:21:57,945 INFO L130 PetriNetUnfolder]: For 10451/10549 co-relation queries the response was YES. [2021-12-06 19:21:57,952 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8825 conditions, 2490 events. 1083/2490 cut-off events. For 10451/10549 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 17164 event pairs, 241 based on Foata normal form. 47/2502 useless extension candidates. Maximal degree in co-relation 7682. Up to 841 conditions per place. [2021-12-06 19:21:57,966 INFO L132 encePairwiseOnDemand]: 148/163 looper letters, 70 selfloop transitions, 40 changer transitions 72/272 dead transitions. [2021-12-06 19:21:57,966 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 272 transitions, 1653 flow [2021-12-06 19:21:57,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 19:21:57,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-06 19:21:57,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1225 transitions. [2021-12-06 19:21:57,970 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.683212493028444 [2021-12-06 19:21:57,970 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1225 transitions. [2021-12-06 19:21:57,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1225 transitions. [2021-12-06 19:21:57,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:21:57,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1225 transitions. [2021-12-06 19:21:57,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 111.36363636363636) internal successors, (1225), 11 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:21:57,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 163.0) internal successors, (1956), 12 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:21:57,979 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 163.0) internal successors, (1956), 12 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:21:57,979 INFO L186 Difference]: Start difference. First operand has 165 places, 182 transitions, 580 flow. Second operand 11 states and 1225 transitions. [2021-12-06 19:21:57,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 272 transitions, 1653 flow [2021-12-06 19:21:57,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 272 transitions, 1653 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-06 19:21:57,993 INFO L242 Difference]: Finished difference. Result has 183 places, 185 transitions, 880 flow [2021-12-06 19:21:57,994 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=880, PETRI_PLACES=183, PETRI_TRANSITIONS=185} [2021-12-06 19:21:57,994 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 32 predicate places. [2021-12-06 19:21:57,994 INFO L470 AbstractCegarLoop]: Abstraction has has 183 places, 185 transitions, 880 flow [2021-12-06 19:21:57,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 103.5) internal successors, (621), 6 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:21:57,995 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:21:57,995 INFO L254 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] [2021-12-06 19:21:57,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 19:21:57,996 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-06 19:21:57,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:21:57,996 INFO L85 PathProgramCache]: Analyzing trace with hash -701385000, now seen corresponding path program 1 times [2021-12-06 19:21:57,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:21:57,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287220006] [2021-12-06 19:21:57,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:21:57,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:21:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:21:58,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:21:58,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:21:58,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287220006] [2021-12-06 19:21:58,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287220006] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:21:58,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:21:58,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:21:58,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031663505] [2021-12-06 19:21:58,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:21:58,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:21:58,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:21:58,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:21:58,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:21:58,077 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 163 [2021-12-06 19:21:58,078 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 185 transitions, 880 flow. Second operand has 5 states, 5 states have (on average 140.2) internal successors, (701), 5 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:21:58,078 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:21:58,078 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 163 [2021-12-06 19:21:58,078 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:21:58,175 INFO L129 PetriNetUnfolder]: 55/293 cut-off events. [2021-12-06 19:21:58,176 INFO L130 PetriNetUnfolder]: For 946/1046 co-relation queries the response was YES. [2021-12-06 19:21:58,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 723 conditions, 293 events. 55/293 cut-off events. For 946/1046 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1066 event pairs, 14 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 704. Up to 34 conditions per place. [2021-12-06 19:21:58,179 INFO L132 encePairwiseOnDemand]: 158/163 looper letters, 19 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2021-12-06 19:21:58,179 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 124 transitions, 396 flow [2021-12-06 19:21:58,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:21:58,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-06 19:21:58,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 852 transitions. [2021-12-06 19:21:58,182 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8711656441717791 [2021-12-06 19:21:58,182 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 852 transitions. [2021-12-06 19:21:58,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 852 transitions. [2021-12-06 19:21:58,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:21:58,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 852 transitions. [2021-12-06 19:21:58,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:21:58,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:21:58,187 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:21:58,188 INFO L186 Difference]: Start difference. First operand has 183 places, 185 transitions, 880 flow. Second operand 6 states and 852 transitions. [2021-12-06 19:21:58,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 124 transitions, 396 flow [2021-12-06 19:21:58,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 124 transitions, 306 flow, removed 40 selfloop flow, removed 15 redundant places. [2021-12-06 19:21:58,192 INFO L242 Difference]: Finished difference. Result has 129 places, 116 transitions, 252 flow [2021-12-06 19:21:58,193 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=252, PETRI_PLACES=129, PETRI_TRANSITIONS=116} [2021-12-06 19:21:58,193 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, -22 predicate places. [2021-12-06 19:21:58,194 INFO L470 AbstractCegarLoop]: Abstraction has has 129 places, 116 transitions, 252 flow [2021-12-06 19:21:58,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 140.2) internal successors, (701), 5 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:21:58,194 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:21:58,194 INFO L254 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] [2021-12-06 19:21:58,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 19:21:58,195 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-06 19:21:58,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:21:58,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1132502568, now seen corresponding path program 1 times [2021-12-06 19:21:58,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:21:58,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469188883] [2021-12-06 19:21:58,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:21:58,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:21:58,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:21:58,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:21:58,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:21:58,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469188883] [2021-12-06 19:21:58,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469188883] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:21:58,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:21:58,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-12-06 19:21:58,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596244711] [2021-12-06 19:21:58,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:21:58,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 19:21:58,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:21:58,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 19:21:58,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2021-12-06 19:21:58,985 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2021-12-06 19:21:58,987 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 116 transitions, 252 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:21:58,987 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:21:58,987 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2021-12-06 19:21:58,987 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:22:01,661 INFO L129 PetriNetUnfolder]: 994/2110 cut-off events. [2021-12-06 19:22:01,662 INFO L130 PetriNetUnfolder]: For 190/190 co-relation queries the response was YES. [2021-12-06 19:22:01,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4254 conditions, 2110 events. 994/2110 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 12366 event pairs, 174 based on Foata normal form. 0/2025 useless extension candidates. Maximal degree in co-relation 4246. Up to 549 conditions per place. [2021-12-06 19:22:01,673 INFO L132 encePairwiseOnDemand]: 135/163 looper letters, 187 selfloop transitions, 29 changer transitions 0/271 dead transitions. [2021-12-06 19:22:01,673 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 271 transitions, 1060 flow [2021-12-06 19:22:01,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 19:22:01,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-06 19:22:01,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2065 transitions. [2021-12-06 19:22:01,682 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5278629856850716 [2021-12-06 19:22:01,683 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2065 transitions. [2021-12-06 19:22:01,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2065 transitions. [2021-12-06 19:22:01,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:22:01,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2065 transitions. [2021-12-06 19:22:01,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 86.04166666666667) internal successors, (2065), 24 states have internal predecessors, (2065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:01,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:01,701 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:01,701 INFO L186 Difference]: Start difference. First operand has 129 places, 116 transitions, 252 flow. Second operand 24 states and 2065 transitions. [2021-12-06 19:22:01,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 271 transitions, 1060 flow [2021-12-06 19:22:01,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 271 transitions, 1053 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-06 19:22:01,709 INFO L242 Difference]: Finished difference. Result has 161 places, 135 transitions, 418 flow [2021-12-06 19:22:01,709 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=418, PETRI_PLACES=161, PETRI_TRANSITIONS=135} [2021-12-06 19:22:01,710 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 10 predicate places. [2021-12-06 19:22:01,710 INFO L470 AbstractCegarLoop]: Abstraction has has 161 places, 135 transitions, 418 flow [2021-12-06 19:22:01,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:01,711 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:22:01,712 INFO L254 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] [2021-12-06 19:22:01,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 19:22:01,712 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-06 19:22:01,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:01,713 INFO L85 PathProgramCache]: Analyzing trace with hash -28470102, now seen corresponding path program 2 times [2021-12-06 19:22:01,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:01,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066529380] [2021-12-06 19:22:01,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:01,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:02,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:02,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:02,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066529380] [2021-12-06 19:22:02,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066529380] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:22:02,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:22:02,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-06 19:22:02,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624885731] [2021-12-06 19:22:02,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:22:02,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 19:22:02,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:02,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 19:22:02,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:22:02,134 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2021-12-06 19:22:02,135 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 135 transitions, 418 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:02,135 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:22:02,135 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2021-12-06 19:22:02,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:22:03,147 INFO L129 PetriNetUnfolder]: 553/1510 cut-off events. [2021-12-06 19:22:03,147 INFO L130 PetriNetUnfolder]: For 756/785 co-relation queries the response was YES. [2021-12-06 19:22:03,152 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3456 conditions, 1510 events. 553/1510 cut-off events. For 756/785 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9274 event pairs, 210 based on Foata normal form. 20/1484 useless extension candidates. Maximal degree in co-relation 3436. Up to 502 conditions per place. [2021-12-06 19:22:03,160 INFO L132 encePairwiseOnDemand]: 141/163 looper letters, 132 selfloop transitions, 30 changer transitions 0/226 dead transitions. [2021-12-06 19:22:03,160 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 226 transitions, 1064 flow [2021-12-06 19:22:03,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 19:22:03,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-06 19:22:03,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1869 transitions. [2021-12-06 19:22:03,167 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5460122699386503 [2021-12-06 19:22:03,167 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1869 transitions. [2021-12-06 19:22:03,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1869 transitions. [2021-12-06 19:22:03,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:22:03,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1869 transitions. [2021-12-06 19:22:03,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.0) internal successors, (1869), 21 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:03,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:03,181 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:03,181 INFO L186 Difference]: Start difference. First operand has 161 places, 135 transitions, 418 flow. Second operand 21 states and 1869 transitions. [2021-12-06 19:22:03,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 226 transitions, 1064 flow [2021-12-06 19:22:03,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 226 transitions, 1044 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-12-06 19:22:03,188 INFO L242 Difference]: Finished difference. Result has 183 places, 153 transitions, 602 flow [2021-12-06 19:22:03,188 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=602, PETRI_PLACES=183, PETRI_TRANSITIONS=153} [2021-12-06 19:22:03,189 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 32 predicate places. [2021-12-06 19:22:03,189 INFO L470 AbstractCegarLoop]: Abstraction has has 183 places, 153 transitions, 602 flow [2021-12-06 19:22:03,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:03,190 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:22:03,190 INFO L254 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] [2021-12-06 19:22:03,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 19:22:03,190 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-06 19:22:03,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:03,191 INFO L85 PathProgramCache]: Analyzing trace with hash -584894136, now seen corresponding path program 3 times [2021-12-06 19:22:03,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:03,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196820557] [2021-12-06 19:22:03,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:03,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:03,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:03,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:03,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196820557] [2021-12-06 19:22:03,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196820557] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:22:03,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:22:03,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-06 19:22:03,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738806094] [2021-12-06 19:22:03,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:22:03,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-06 19:22:03,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:03,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-06 19:22:03,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2021-12-06 19:22:03,853 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2021-12-06 19:22:03,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 153 transitions, 602 flow. Second operand has 26 states, 26 states have (on average 79.07692307692308) internal successors, (2056), 26 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:03,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:22:03,855 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2021-12-06 19:22:03,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:22:07,733 INFO L129 PetriNetUnfolder]: 2004/4381 cut-off events. [2021-12-06 19:22:07,733 INFO L130 PetriNetUnfolder]: For 3767/3785 co-relation queries the response was YES. [2021-12-06 19:22:07,745 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11411 conditions, 4381 events. 2004/4381 cut-off events. For 3767/3785 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 31498 event pairs, 448 based on Foata normal form. 2/4226 useless extension candidates. Maximal degree in co-relation 11380. Up to 1203 conditions per place. [2021-12-06 19:22:07,763 INFO L132 encePairwiseOnDemand]: 135/163 looper letters, 251 selfloop transitions, 60 changer transitions 0/366 dead transitions. [2021-12-06 19:22:07,763 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 366 transitions, 2029 flow [2021-12-06 19:22:07,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-06 19:22:07,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-12-06 19:22:07,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2819 transitions. [2021-12-06 19:22:07,770 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5240751068971928 [2021-12-06 19:22:07,770 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2819 transitions. [2021-12-06 19:22:07,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2819 transitions. [2021-12-06 19:22:07,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:22:07,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2819 transitions. [2021-12-06 19:22:07,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 85.42424242424242) internal successors, (2819), 33 states have internal predecessors, (2819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:07,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 163.0) internal successors, (5542), 34 states have internal predecessors, (5542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:07,785 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 163.0) internal successors, (5542), 34 states have internal predecessors, (5542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:07,785 INFO L186 Difference]: Start difference. First operand has 183 places, 153 transitions, 602 flow. Second operand 33 states and 2819 transitions. [2021-12-06 19:22:07,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 366 transitions, 2029 flow [2021-12-06 19:22:07,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 366 transitions, 2001 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-12-06 19:22:07,803 INFO L242 Difference]: Finished difference. Result has 224 places, 196 transitions, 1099 flow [2021-12-06 19:22:07,803 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1099, PETRI_PLACES=224, PETRI_TRANSITIONS=196} [2021-12-06 19:22:07,804 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 73 predicate places. [2021-12-06 19:22:07,804 INFO L470 AbstractCegarLoop]: Abstraction has has 224 places, 196 transitions, 1099 flow [2021-12-06 19:22:07,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 79.07692307692308) internal successors, (2056), 26 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:07,805 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:22:07,805 INFO L254 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] [2021-12-06 19:22:07,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 19:22:07,805 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-06 19:22:07,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:07,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1670150768, now seen corresponding path program 4 times [2021-12-06 19:22:07,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:07,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664146409] [2021-12-06 19:22:07,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:07,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:08,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:08,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:08,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664146409] [2021-12-06 19:22:08,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664146409] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:22:08,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:22:08,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-06 19:22:08,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517280570] [2021-12-06 19:22:08,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:22:08,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-06 19:22:08,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:08,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-06 19:22:08,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2021-12-06 19:22:08,394 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2021-12-06 19:22:08,396 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 196 transitions, 1099 flow. Second operand has 26 states, 26 states have (on average 79.07692307692308) internal successors, (2056), 26 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:08,396 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:22:08,396 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2021-12-06 19:22:08,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:22:12,598 INFO L129 PetriNetUnfolder]: 3027/6750 cut-off events. [2021-12-06 19:22:12,598 INFO L130 PetriNetUnfolder]: For 15736/15764 co-relation queries the response was YES. [2021-12-06 19:22:12,626 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21516 conditions, 6750 events. 3027/6750 cut-off events. For 15736/15764 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 55036 event pairs, 297 based on Foata normal form. 28/6596 useless extension candidates. Maximal degree in co-relation 21470. Up to 1519 conditions per place. [2021-12-06 19:22:12,652 INFO L132 encePairwiseOnDemand]: 134/163 looper letters, 327 selfloop transitions, 107 changer transitions 0/489 dead transitions. [2021-12-06 19:22:12,652 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 489 transitions, 3919 flow [2021-12-06 19:22:12,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 19:22:12,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-12-06 19:22:12,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2644 transitions. [2021-12-06 19:22:12,656 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5232535127646942 [2021-12-06 19:22:12,656 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2644 transitions. [2021-12-06 19:22:12,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2644 transitions. [2021-12-06 19:22:12,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:22:12,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2644 transitions. [2021-12-06 19:22:12,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 85.29032258064517) internal successors, (2644), 31 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:12,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 163.0) internal successors, (5216), 32 states have internal predecessors, (5216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:12,666 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 163.0) internal successors, (5216), 32 states have internal predecessors, (5216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:12,666 INFO L186 Difference]: Start difference. First operand has 224 places, 196 transitions, 1099 flow. Second operand 31 states and 2644 transitions. [2021-12-06 19:22:12,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 489 transitions, 3919 flow [2021-12-06 19:22:12,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 489 transitions, 3727 flow, removed 90 selfloop flow, removed 6 redundant places. [2021-12-06 19:22:12,729 INFO L242 Difference]: Finished difference. Result has 269 places, 271 transitions, 2135 flow [2021-12-06 19:22:12,729 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2135, PETRI_PLACES=269, PETRI_TRANSITIONS=271} [2021-12-06 19:22:12,730 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 118 predicate places. [2021-12-06 19:22:12,730 INFO L470 AbstractCegarLoop]: Abstraction has has 269 places, 271 transitions, 2135 flow [2021-12-06 19:22:12,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 79.07692307692308) internal successors, (2056), 26 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:12,731 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:22:12,731 INFO L254 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] [2021-12-06 19:22:12,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 19:22:12,731 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-06 19:22:12,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:12,731 INFO L85 PathProgramCache]: Analyzing trace with hash 624969670, now seen corresponding path program 5 times [2021-12-06 19:22:12,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:12,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961102775] [2021-12-06 19:22:12,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:12,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:13,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:13,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:13,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961102775] [2021-12-06 19:22:13,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961102775] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:22:13,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:22:13,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-06 19:22:13,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662666464] [2021-12-06 19:22:13,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:22:13,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 19:22:13,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:13,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 19:22:13,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:22:13,131 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2021-12-06 19:22:13,133 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 271 transitions, 2135 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:13,133 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:22:13,133 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2021-12-06 19:22:13,133 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:22:14,604 INFO L129 PetriNetUnfolder]: 1632/4534 cut-off events. [2021-12-06 19:22:14,605 INFO L130 PetriNetUnfolder]: For 16222/16501 co-relation queries the response was YES. [2021-12-06 19:22:14,629 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15350 conditions, 4534 events. 1632/4534 cut-off events. For 16222/16501 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 38825 event pairs, 842 based on Foata normal form. 117/4488 useless extension candidates. Maximal degree in co-relation 15283. Up to 1889 conditions per place. [2021-12-06 19:22:14,641 INFO L132 encePairwiseOnDemand]: 141/163 looper letters, 212 selfloop transitions, 74 changer transitions 0/362 dead transitions. [2021-12-06 19:22:14,641 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 362 transitions, 3325 flow [2021-12-06 19:22:14,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 19:22:14,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-06 19:22:14,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1867 transitions. [2021-12-06 19:22:14,644 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5454279871457786 [2021-12-06 19:22:14,644 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1867 transitions. [2021-12-06 19:22:14,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1867 transitions. [2021-12-06 19:22:14,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:22:14,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1867 transitions. [2021-12-06 19:22:14,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 88.9047619047619) internal successors, (1867), 21 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:14,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:14,650 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:14,650 INFO L186 Difference]: Start difference. First operand has 269 places, 271 transitions, 2135 flow. Second operand 21 states and 1867 transitions. [2021-12-06 19:22:14,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 362 transitions, 3325 flow [2021-12-06 19:22:14,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 362 transitions, 3230 flow, removed 41 selfloop flow, removed 6 redundant places. [2021-12-06 19:22:14,704 INFO L242 Difference]: Finished difference. Result has 294 places, 289 transitions, 2520 flow [2021-12-06 19:22:14,704 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=2053, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2520, PETRI_PLACES=294, PETRI_TRANSITIONS=289} [2021-12-06 19:22:14,705 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 143 predicate places. [2021-12-06 19:22:14,705 INFO L470 AbstractCegarLoop]: Abstraction has has 294 places, 289 transitions, 2520 flow [2021-12-06 19:22:14,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:14,705 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:22:14,705 INFO L254 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] [2021-12-06 19:22:14,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 19:22:14,706 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-06 19:22:14,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:14,706 INFO L85 PathProgramCache]: Analyzing trace with hash 774584650, now seen corresponding path program 6 times [2021-12-06 19:22:14,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:14,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821276439] [2021-12-06 19:22:14,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:14,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:15,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:15,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:15,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821276439] [2021-12-06 19:22:15,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821276439] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:22:15,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:22:15,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-06 19:22:15,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647086061] [2021-12-06 19:22:15,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:22:15,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 19:22:15,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:15,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 19:22:15,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:22:15,073 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2021-12-06 19:22:15,075 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 289 transitions, 2520 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:15,075 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:22:15,075 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2021-12-06 19:22:15,075 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:22:16,933 INFO L129 PetriNetUnfolder]: 2516/6180 cut-off events. [2021-12-06 19:22:16,933 INFO L130 PetriNetUnfolder]: For 28269/28528 co-relation queries the response was YES. [2021-12-06 19:22:16,969 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23016 conditions, 6180 events. 2516/6180 cut-off events. For 28269/28528 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 54569 event pairs, 183 based on Foata normal form. 90/6100 useless extension candidates. Maximal degree in co-relation 22937. Up to 1344 conditions per place. [2021-12-06 19:22:16,986 INFO L132 encePairwiseOnDemand]: 139/163 looper letters, 245 selfloop transitions, 112 changer transitions 0/430 dead transitions. [2021-12-06 19:22:16,986 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 430 transitions, 4500 flow [2021-12-06 19:22:16,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 19:22:16,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-06 19:22:16,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1696 transitions. [2021-12-06 19:22:16,989 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5476267355505328 [2021-12-06 19:22:16,989 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1696 transitions. [2021-12-06 19:22:16,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1696 transitions. [2021-12-06 19:22:16,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:22:16,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1696 transitions. [2021-12-06 19:22:16,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 89.26315789473684) internal successors, (1696), 19 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:16,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 163.0) internal successors, (3260), 20 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:16,994 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 163.0) internal successors, (3260), 20 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:16,994 INFO L186 Difference]: Start difference. First operand has 294 places, 289 transitions, 2520 flow. Second operand 19 states and 1696 transitions. [2021-12-06 19:22:16,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 430 transitions, 4500 flow [2021-12-06 19:22:17,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 430 transitions, 4406 flow, removed 42 selfloop flow, removed 5 redundant places. [2021-12-06 19:22:17,093 INFO L242 Difference]: Finished difference. Result has 315 places, 309 transitions, 3131 flow [2021-12-06 19:22:17,093 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=2454, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3131, PETRI_PLACES=315, PETRI_TRANSITIONS=309} [2021-12-06 19:22:17,094 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 164 predicate places. [2021-12-06 19:22:17,094 INFO L470 AbstractCegarLoop]: Abstraction has has 315 places, 309 transitions, 3131 flow [2021-12-06 19:22:17,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:17,095 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:22:17,095 INFO L254 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] [2021-12-06 19:22:17,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 19:22:17,095 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-06 19:22:17,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:17,096 INFO L85 PathProgramCache]: Analyzing trace with hash 201833904, now seen corresponding path program 7 times [2021-12-06 19:22:17,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:17,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437690504] [2021-12-06 19:22:17,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:17,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:17,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:17,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:17,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437690504] [2021-12-06 19:22:17,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437690504] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:22:17,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:22:17,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-06 19:22:17,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590220660] [2021-12-06 19:22:17,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:22:17,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 19:22:17,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:17,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 19:22:17,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:22:17,464 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2021-12-06 19:22:17,465 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 309 transitions, 3131 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:17,466 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:22:17,466 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2021-12-06 19:22:17,466 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:22:20,472 INFO L129 PetriNetUnfolder]: 4297/11667 cut-off events. [2021-12-06 19:22:20,473 INFO L130 PetriNetUnfolder]: For 66286/66706 co-relation queries the response was YES. [2021-12-06 19:22:20,565 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44819 conditions, 11667 events. 4297/11667 cut-off events. For 66286/66706 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 121122 event pairs, 1484 based on Foata normal form. 157/11515 useless extension candidates. Maximal degree in co-relation 44732. Up to 3529 conditions per place. [2021-12-06 19:22:20,628 INFO L132 encePairwiseOnDemand]: 141/163 looper letters, 339 selfloop transitions, 144 changer transitions 0/556 dead transitions. [2021-12-06 19:22:20,628 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 556 transitions, 6810 flow [2021-12-06 19:22:20,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 19:22:20,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-06 19:22:20,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1877 transitions. [2021-12-06 19:22:20,630 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5483494011101373 [2021-12-06 19:22:20,631 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1877 transitions. [2021-12-06 19:22:20,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1877 transitions. [2021-12-06 19:22:20,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:22:20,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1877 transitions. [2021-12-06 19:22:20,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.38095238095238) internal successors, (1877), 21 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:20,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:20,636 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:20,636 INFO L186 Difference]: Start difference. First operand has 315 places, 309 transitions, 3131 flow. Second operand 21 states and 1877 transitions. [2021-12-06 19:22:20,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 556 transitions, 6810 flow [2021-12-06 19:22:20,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 556 transitions, 6690 flow, removed 19 selfloop flow, removed 8 redundant places. [2021-12-06 19:22:20,907 INFO L242 Difference]: Finished difference. Result has 338 places, 389 transitions, 4786 flow [2021-12-06 19:22:20,907 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=3055, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4786, PETRI_PLACES=338, PETRI_TRANSITIONS=389} [2021-12-06 19:22:20,908 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 187 predicate places. [2021-12-06 19:22:20,908 INFO L470 AbstractCegarLoop]: Abstraction has has 338 places, 389 transitions, 4786 flow [2021-12-06 19:22:20,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:20,908 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:22:20,908 INFO L254 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] [2021-12-06 19:22:20,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 19:22:20,909 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-06 19:22:20,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:20,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1279155394, now seen corresponding path program 8 times [2021-12-06 19:22:20,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:20,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039940710] [2021-12-06 19:22:20,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:20,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:21,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:21,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:21,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039940710] [2021-12-06 19:22:21,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039940710] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:22:21,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:22:21,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-12-06 19:22:21,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064319873] [2021-12-06 19:22:21,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:22:21,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 19:22:21,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:21,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 19:22:21,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2021-12-06 19:22:21,278 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2021-12-06 19:22:21,279 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 389 transitions, 4786 flow. Second operand has 20 states, 20 states have (on average 84.45) internal successors, (1689), 20 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:21,279 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:22:21,279 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2021-12-06 19:22:21,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:22:24,879 INFO L129 PetriNetUnfolder]: 4323/11962 cut-off events. [2021-12-06 19:22:24,879 INFO L130 PetriNetUnfolder]: For 80119/80502 co-relation queries the response was YES. [2021-12-06 19:22:24,967 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47985 conditions, 11962 events. 4323/11962 cut-off events. For 80119/80502 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 124530 event pairs, 1973 based on Foata normal form. 135/11771 useless extension candidates. Maximal degree in co-relation 47886. Up to 5083 conditions per place. [2021-12-06 19:22:24,997 INFO L132 encePairwiseOnDemand]: 140/163 looper letters, 275 selfloop transitions, 196 changer transitions 0/544 dead transitions. [2021-12-06 19:22:24,997 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 544 transitions, 7375 flow [2021-12-06 19:22:24,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 19:22:24,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-12-06 19:22:24,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2184 transitions. [2021-12-06 19:22:24,999 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5359509202453988 [2021-12-06 19:22:24,999 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2184 transitions. [2021-12-06 19:22:24,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2184 transitions. [2021-12-06 19:22:25,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:22:25,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2184 transitions. [2021-12-06 19:22:25,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 87.36) internal successors, (2184), 25 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:25,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 163.0) internal successors, (4238), 26 states have internal predecessors, (4238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:25,006 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 163.0) internal successors, (4238), 26 states have internal predecessors, (4238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:25,006 INFO L186 Difference]: Start difference. First operand has 338 places, 389 transitions, 4786 flow. Second operand 25 states and 2184 transitions. [2021-12-06 19:22:25,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 544 transitions, 7375 flow [2021-12-06 19:22:25,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 544 transitions, 7263 flow, removed 44 selfloop flow, removed 5 redundant places. [2021-12-06 19:22:25,368 INFO L242 Difference]: Finished difference. Result has 369 places, 442 transitions, 6178 flow [2021-12-06 19:22:25,369 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=4686, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=6178, PETRI_PLACES=369, PETRI_TRANSITIONS=442} [2021-12-06 19:22:25,369 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 218 predicate places. [2021-12-06 19:22:25,370 INFO L470 AbstractCegarLoop]: Abstraction has has 369 places, 442 transitions, 6178 flow [2021-12-06 19:22:25,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 84.45) internal successors, (1689), 20 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:25,370 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:22:25,370 INFO L254 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] [2021-12-06 19:22:25,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 19:22:25,370 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-06 19:22:25,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:25,370 INFO L85 PathProgramCache]: Analyzing trace with hash -963739190, now seen corresponding path program 9 times [2021-12-06 19:22:25,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:25,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364106405] [2021-12-06 19:22:25,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:25,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:25,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:25,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:25,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364106405] [2021-12-06 19:22:25,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364106405] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:22:25,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:22:25,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-12-06 19:22:25,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698465749] [2021-12-06 19:22:25,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:22:25,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 19:22:25,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:25,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 19:22:25,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2021-12-06 19:22:25,905 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2021-12-06 19:22:25,906 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 442 transitions, 6178 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:25,906 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:22:25,906 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2021-12-06 19:22:25,906 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:22:33,456 INFO L129 PetriNetUnfolder]: 8852/21709 cut-off events. [2021-12-06 19:22:33,456 INFO L130 PetriNetUnfolder]: For 167501/167624 co-relation queries the response was YES. [2021-12-06 19:22:33,713 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92281 conditions, 21709 events. 8852/21709 cut-off events. For 167501/167624 co-relation queries the response was YES. Maximal size of possible extension queue 897. Compared 231156 event pairs, 5171 based on Foata normal form. 45/21352 useless extension candidates. Maximal degree in co-relation 92169. Up to 10323 conditions per place. [2021-12-06 19:22:33,782 INFO L132 encePairwiseOnDemand]: 135/163 looper letters, 502 selfloop transitions, 148 changer transitions 0/705 dead transitions. [2021-12-06 19:22:33,782 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 705 transitions, 10529 flow [2021-12-06 19:22:33,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 19:22:33,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-06 19:22:33,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2067 transitions. [2021-12-06 19:22:33,785 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5283742331288344 [2021-12-06 19:22:33,785 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2067 transitions. [2021-12-06 19:22:33,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2067 transitions. [2021-12-06 19:22:33,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:22:33,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2067 transitions. [2021-12-06 19:22:33,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 86.125) internal successors, (2067), 24 states have internal predecessors, (2067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:33,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:33,793 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:33,793 INFO L186 Difference]: Start difference. First operand has 369 places, 442 transitions, 6178 flow. Second operand 24 states and 2067 transitions. [2021-12-06 19:22:33,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 705 transitions, 10529 flow [2021-12-06 19:22:35,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 705 transitions, 10168 flow, removed 103 selfloop flow, removed 8 redundant places. [2021-12-06 19:22:35,120 INFO L242 Difference]: Finished difference. Result has 400 places, 502 transitions, 7577 flow [2021-12-06 19:22:35,121 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=5905, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=7577, PETRI_PLACES=400, PETRI_TRANSITIONS=502} [2021-12-06 19:22:35,121 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 249 predicate places. [2021-12-06 19:22:35,122 INFO L470 AbstractCegarLoop]: Abstraction has has 400 places, 502 transitions, 7577 flow [2021-12-06 19:22:35,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:35,122 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:22:35,122 INFO L254 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] [2021-12-06 19:22:35,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 19:22:35,122 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-06 19:22:35,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:35,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1972012704, now seen corresponding path program 10 times [2021-12-06 19:22:35,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:35,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478974870] [2021-12-06 19:22:35,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:35,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:35,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:35,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:35,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478974870] [2021-12-06 19:22:35,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478974870] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:22:35,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:22:35,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-06 19:22:35,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907941161] [2021-12-06 19:22:35,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:22:35,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 19:22:35,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:35,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 19:22:35,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:22:35,521 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2021-12-06 19:22:35,522 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 502 transitions, 7577 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:35,522 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:22:35,522 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2021-12-06 19:22:35,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:22:41,537 INFO L129 PetriNetUnfolder]: 7147/19756 cut-off events. [2021-12-06 19:22:41,537 INFO L130 PetriNetUnfolder]: For 160198/160960 co-relation queries the response was YES. [2021-12-06 19:22:41,751 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84588 conditions, 19756 events. 7147/19756 cut-off events. For 160198/160960 co-relation queries the response was YES. Maximal size of possible extension queue 1073. Compared 228456 event pairs, 1031 based on Foata normal form. 271/19701 useless extension candidates. Maximal degree in co-relation 84461. Up to 4280 conditions per place. [2021-12-06 19:22:41,800 INFO L132 encePairwiseOnDemand]: 139/163 looper letters, 366 selfloop transitions, 292 changer transitions 0/740 dead transitions. [2021-12-06 19:22:41,800 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 740 transitions, 12105 flow [2021-12-06 19:22:41,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 19:22:41,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-06 19:22:41,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1886 transitions. [2021-12-06 19:22:41,802 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5509786736780602 [2021-12-06 19:22:41,802 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1886 transitions. [2021-12-06 19:22:41,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1886 transitions. [2021-12-06 19:22:41,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:22:41,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1886 transitions. [2021-12-06 19:22:41,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.80952380952381) internal successors, (1886), 21 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:41,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:41,807 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:41,807 INFO L186 Difference]: Start difference. First operand has 400 places, 502 transitions, 7577 flow. Second operand 21 states and 1886 transitions. [2021-12-06 19:22:41,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 740 transitions, 12105 flow [2021-12-06 19:22:43,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 740 transitions, 11910 flow, removed 91 selfloop flow, removed 5 redundant places. [2021-12-06 19:22:43,050 INFO L242 Difference]: Finished difference. Result has 422 places, 576 transitions, 9937 flow [2021-12-06 19:22:43,051 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=7404, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=9937, PETRI_PLACES=422, PETRI_TRANSITIONS=576} [2021-12-06 19:22:43,051 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 271 predicate places. [2021-12-06 19:22:43,051 INFO L470 AbstractCegarLoop]: Abstraction has has 422 places, 576 transitions, 9937 flow [2021-12-06 19:22:43,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:43,052 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:22:43,052 INFO L254 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] [2021-12-06 19:22:43,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 19:22:43,052 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-06 19:22:43,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:43,052 INFO L85 PathProgramCache]: Analyzing trace with hash 729918340, now seen corresponding path program 11 times [2021-12-06 19:22:43,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:43,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882403219] [2021-12-06 19:22:43,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:43,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:43,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:43,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:43,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882403219] [2021-12-06 19:22:43,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882403219] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:22:43,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:22:43,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-06 19:22:43,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519058745] [2021-12-06 19:22:43,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:22:43,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 19:22:43,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:43,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 19:22:43,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:22:43,389 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2021-12-06 19:22:43,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 576 transitions, 9937 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:43,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:22:43,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2021-12-06 19:22:43,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:22:50,607 INFO L129 PetriNetUnfolder]: 8020/23026 cut-off events. [2021-12-06 19:22:50,607 INFO L130 PetriNetUnfolder]: For 222302/223341 co-relation queries the response was YES. [2021-12-06 19:22:50,959 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102729 conditions, 23026 events. 8020/23026 cut-off events. For 222302/223341 co-relation queries the response was YES. Maximal size of possible extension queue 1287. Compared 277144 event pairs, 3215 based on Foata normal form. 343/22845 useless extension candidates. Maximal degree in co-relation 102594. Up to 8168 conditions per place. [2021-12-06 19:22:51,020 INFO L132 encePairwiseOnDemand]: 141/163 looper letters, 480 selfloop transitions, 266 changer transitions 0/828 dead transitions. [2021-12-06 19:22:51,020 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 828 transitions, 15330 flow [2021-12-06 19:22:51,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 19:22:51,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-06 19:22:51,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1877 transitions. [2021-12-06 19:22:51,022 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5483494011101373 [2021-12-06 19:22:51,022 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1877 transitions. [2021-12-06 19:22:51,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1877 transitions. [2021-12-06 19:22:51,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:22:51,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1877 transitions. [2021-12-06 19:22:51,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.38095238095238) internal successors, (1877), 21 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:51,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:51,027 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:51,027 INFO L186 Difference]: Start difference. First operand has 422 places, 576 transitions, 9937 flow. Second operand 21 states and 1877 transitions. [2021-12-06 19:22:51,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 828 transitions, 15330 flow [2021-12-06 19:22:53,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 828 transitions, 15097 flow, removed 48 selfloop flow, removed 8 redundant places. [2021-12-06 19:22:53,291 INFO L242 Difference]: Finished difference. Result has 444 places, 650 transitions, 12394 flow [2021-12-06 19:22:53,292 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=9729, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=12394, PETRI_PLACES=444, PETRI_TRANSITIONS=650} [2021-12-06 19:22:53,292 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 293 predicate places. [2021-12-06 19:22:53,292 INFO L470 AbstractCegarLoop]: Abstraction has has 444 places, 650 transitions, 12394 flow [2021-12-06 19:22:53,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:53,293 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:22:53,293 INFO L254 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] [2021-12-06 19:22:53,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 19:22:53,293 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-06 19:22:53,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:53,293 INFO L85 PathProgramCache]: Analyzing trace with hash 182114354, now seen corresponding path program 12 times [2021-12-06 19:22:53,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:53,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873897415] [2021-12-06 19:22:53,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:53,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:53,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:22:53,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:53,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:53,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873897415] [2021-12-06 19:22:53,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873897415] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:22:53,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:22:53,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-12-06 19:22:53,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969999201] [2021-12-06 19:22:53,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:22:53,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 19:22:53,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:53,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 19:22:53,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2021-12-06 19:22:53,782 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2021-12-06 19:22:53,783 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 650 transitions, 12394 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:53,783 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:22:53,783 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2021-12-06 19:22:53,783 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:23:07,316 INFO L129 PetriNetUnfolder]: 13074/33878 cut-off events. [2021-12-06 19:23:07,316 INFO L130 PetriNetUnfolder]: For 358561/358654 co-relation queries the response was YES. [2021-12-06 19:23:07,955 INFO L84 FinitePrefix]: Finished finitePrefix Result has 157359 conditions, 33878 events. 13074/33878 cut-off events. For 358561/358654 co-relation queries the response was YES. Maximal size of possible extension queue 1595. Compared 402208 event pairs, 7725 based on Foata normal form. 33/33370 useless extension candidates. Maximal degree in co-relation 157213. Up to 8580 conditions per place. [2021-12-06 19:23:08,049 INFO L132 encePairwiseOnDemand]: 134/163 looper letters, 752 selfloop transitions, 280 changer transitions 0/1087 dead transitions. [2021-12-06 19:23:08,049 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 1087 transitions, 20687 flow [2021-12-06 19:23:08,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-06 19:23:08,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-12-06 19:23:08,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2843 transitions. [2021-12-06 19:23:08,052 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5285369027700316 [2021-12-06 19:23:08,052 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2843 transitions. [2021-12-06 19:23:08,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2843 transitions. [2021-12-06 19:23:08,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:23:08,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2843 transitions. [2021-12-06 19:23:08,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 86.15151515151516) internal successors, (2843), 33 states have internal predecessors, (2843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:08,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 163.0) internal successors, (5542), 34 states have internal predecessors, (5542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:08,059 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 163.0) internal successors, (5542), 34 states have internal predecessors, (5542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:08,059 INFO L186 Difference]: Start difference. First operand has 444 places, 650 transitions, 12394 flow. Second operand 33 states and 2843 transitions. [2021-12-06 19:23:08,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 1087 transitions, 20687 flow [2021-12-06 19:23:12,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 1087 transitions, 20332 flow, removed 138 selfloop flow, removed 6 redundant places. [2021-12-06 19:23:12,749 INFO L242 Difference]: Finished difference. Result has 490 places, 762 transitions, 15703 flow [2021-12-06 19:23:12,749 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=12137, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=15703, PETRI_PLACES=490, PETRI_TRANSITIONS=762} [2021-12-06 19:23:12,750 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 339 predicate places. [2021-12-06 19:23:12,750 INFO L470 AbstractCegarLoop]: Abstraction has has 490 places, 762 transitions, 15703 flow [2021-12-06 19:23:12,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:12,750 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:23:12,750 INFO L254 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] [2021-12-06 19:23:12,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 19:23:12,750 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-06 19:23:12,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:12,751 INFO L85 PathProgramCache]: Analyzing trace with hash 731726166, now seen corresponding path program 13 times [2021-12-06 19:23:12,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:12,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19347453] [2021-12-06 19:23:12,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:12,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:12,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:13,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:13,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:13,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19347453] [2021-12-06 19:23:13,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19347453] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:23:13,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:23:13,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-06 19:23:13,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865548598] [2021-12-06 19:23:13,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:23:13,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 19:23:13,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:13,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 19:23:13,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:23:13,068 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2021-12-06 19:23:13,069 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 762 transitions, 15703 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:13,069 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:23:13,069 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2021-12-06 19:23:13,069 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:23:23,293 INFO L129 PetriNetUnfolder]: 9641/27907 cut-off events. [2021-12-06 19:23:23,293 INFO L130 PetriNetUnfolder]: For 330292/331725 co-relation queries the response was YES. [2021-12-06 19:23:23,815 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132276 conditions, 27907 events. 9641/27907 cut-off events. For 330292/331725 co-relation queries the response was YES. Maximal size of possible extension queue 1568. Compared 348604 event pairs, 2265 based on Foata normal form. 467/27771 useless extension candidates. Maximal degree in co-relation 132110. Up to 10373 conditions per place. [2021-12-06 19:23:23,952 INFO L132 encePairwiseOnDemand]: 141/163 looper letters, 544 selfloop transitions, 347 changer transitions 0/989 dead transitions. [2021-12-06 19:23:23,952 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 989 transitions, 21325 flow [2021-12-06 19:23:23,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 19:23:23,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-06 19:23:23,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1877 transitions. [2021-12-06 19:23:23,954 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5483494011101373 [2021-12-06 19:23:23,954 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1877 transitions. [2021-12-06 19:23:23,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1877 transitions. [2021-12-06 19:23:23,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:23:23,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1877 transitions. [2021-12-06 19:23:23,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.38095238095238) internal successors, (1877), 21 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:23,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:23,959 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:23,960 INFO L186 Difference]: Start difference. First operand has 490 places, 762 transitions, 15703 flow. Second operand 21 states and 1877 transitions. [2021-12-06 19:23:23,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 989 transitions, 21325 flow [2021-12-06 19:23:28,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 989 transitions, 20746 flow, removed 284 selfloop flow, removed 5 redundant places. [2021-12-06 19:23:28,224 INFO L242 Difference]: Finished difference. Result has 514 places, 831 transitions, 18335 flow [2021-12-06 19:23:28,224 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=15202, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=762, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=282, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=18335, PETRI_PLACES=514, PETRI_TRANSITIONS=831} [2021-12-06 19:23:28,225 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 363 predicate places. [2021-12-06 19:23:28,225 INFO L470 AbstractCegarLoop]: Abstraction has has 514 places, 831 transitions, 18335 flow [2021-12-06 19:23:28,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:28,225 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:23:28,225 INFO L254 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] [2021-12-06 19:23:28,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 19:23:28,226 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-06 19:23:28,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:28,226 INFO L85 PathProgramCache]: Analyzing trace with hash 200002714, now seen corresponding path program 14 times [2021-12-06 19:23:28,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:28,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958221369] [2021-12-06 19:23:28,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:28,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:28,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:28,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:28,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958221369] [2021-12-06 19:23:28,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958221369] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:23:28,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:23:28,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-12-06 19:23:28,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673809574] [2021-12-06 19:23:28,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:23:28,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 19:23:28,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:28,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 19:23:28,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2021-12-06 19:23:28,717 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2021-12-06 19:23:28,718 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 831 transitions, 18335 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:28,718 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:23:28,718 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2021-12-06 19:23:28,718 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:23:43,476 INFO L129 PetriNetUnfolder]: 13092/34597 cut-off events. [2021-12-06 19:23:43,476 INFO L130 PetriNetUnfolder]: For 478186/478282 co-relation queries the response was YES. [2021-12-06 19:23:44,230 INFO L84 FinitePrefix]: Finished finitePrefix Result has 170093 conditions, 34597 events. 13092/34597 cut-off events. For 478186/478282 co-relation queries the response was YES. Maximal size of possible extension queue 1499. Compared 417723 event pairs, 3586 based on Foata normal form. 49/34021 useless extension candidates. Maximal degree in co-relation 169917. Up to 19386 conditions per place. [2021-12-06 19:23:44,328 INFO L132 encePairwiseOnDemand]: 137/163 looper letters, 808 selfloop transitions, 300 changer transitions 0/1163 dead transitions. [2021-12-06 19:23:44,328 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 1163 transitions, 26294 flow [2021-12-06 19:23:44,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-06 19:23:44,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-12-06 19:23:44,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2230 transitions. [2021-12-06 19:23:44,331 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5261915998112318 [2021-12-06 19:23:44,331 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2230 transitions. [2021-12-06 19:23:44,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2230 transitions. [2021-12-06 19:23:44,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:23:44,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2230 transitions. [2021-12-06 19:23:44,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 85.76923076923077) internal successors, (2230), 26 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:44,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 163.0) internal successors, (4401), 27 states have internal predecessors, (4401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:44,337 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 163.0) internal successors, (4401), 27 states have internal predecessors, (4401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:44,337 INFO L186 Difference]: Start difference. First operand has 514 places, 831 transitions, 18335 flow. Second operand 26 states and 2230 transitions. [2021-12-06 19:23:44,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 1163 transitions, 26294 flow [2021-12-06 19:23:49,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 1163 transitions, 25546 flow, removed 240 selfloop flow, removed 8 redundant places. [2021-12-06 19:23:49,705 INFO L242 Difference]: Finished difference. Result has 540 places, 862 transitions, 19783 flow [2021-12-06 19:23:49,706 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=17920, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=831, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=19783, PETRI_PLACES=540, PETRI_TRANSITIONS=862} [2021-12-06 19:23:49,706 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 389 predicate places. [2021-12-06 19:23:49,706 INFO L470 AbstractCegarLoop]: Abstraction has has 540 places, 862 transitions, 19783 flow [2021-12-06 19:23:49,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:49,707 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:23:49,707 INFO L254 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] [2021-12-06 19:23:49,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 19:23:49,707 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-06 19:23:49,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:49,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1546669030, now seen corresponding path program 15 times [2021-12-06 19:23:49,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:49,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264599584] [2021-12-06 19:23:49,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:49,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:50,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:50,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:50,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264599584] [2021-12-06 19:23:50,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264599584] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:23:50,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:23:50,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-06 19:23:50,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375266243] [2021-12-06 19:23:50,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:23:50,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 19:23:50,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:50,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 19:23:50,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:23:50,013 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2021-12-06 19:23:50,014 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 862 transitions, 19783 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:50,014 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:23:50,014 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2021-12-06 19:23:50,014 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:24:01,702 INFO L129 PetriNetUnfolder]: 10130/30220 cut-off events. [2021-12-06 19:24:01,702 INFO L130 PetriNetUnfolder]: For 453862/457788 co-relation queries the response was YES. [2021-12-06 19:24:02,352 INFO L84 FinitePrefix]: Finished finitePrefix Result has 145927 conditions, 30220 events. 10130/30220 cut-off events. For 453862/457788 co-relation queries the response was YES. Maximal size of possible extension queue 1859. Compared 390416 event pairs, 2501 based on Foata normal form. 1045/30245 useless extension candidates. Maximal degree in co-relation 145743. Up to 8650 conditions per place. [2021-12-06 19:24:02,434 INFO L132 encePairwiseOnDemand]: 139/163 looper letters, 649 selfloop transitions, 385 changer transitions 0/1178 dead transitions. [2021-12-06 19:24:02,434 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 1178 transitions, 28378 flow [2021-12-06 19:24:02,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 19:24:02,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-06 19:24:02,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1688 transitions. [2021-12-06 19:24:02,436 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5450435905715209 [2021-12-06 19:24:02,436 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1688 transitions. [2021-12-06 19:24:02,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1688 transitions. [2021-12-06 19:24:02,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:24:02,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1688 transitions. [2021-12-06 19:24:02,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 88.84210526315789) internal successors, (1688), 19 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:02,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 163.0) internal successors, (3260), 20 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:02,440 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 163.0) internal successors, (3260), 20 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:02,440 INFO L186 Difference]: Start difference. First operand has 540 places, 862 transitions, 19783 flow. Second operand 19 states and 1688 transitions. [2021-12-06 19:24:02,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 1178 transitions, 28378 flow [2021-12-06 19:24:06,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 1178 transitions, 28052 flow, removed 66 selfloop flow, removed 11 redundant places. [2021-12-06 19:24:06,448 INFO L242 Difference]: Finished difference. Result has 555 places, 960 transitions, 23498 flow [2021-12-06 19:24:06,449 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=19467, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=862, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=287, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=23498, PETRI_PLACES=555, PETRI_TRANSITIONS=960} [2021-12-06 19:24:06,449 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 404 predicate places. [2021-12-06 19:24:06,449 INFO L470 AbstractCegarLoop]: Abstraction has has 555 places, 960 transitions, 23498 flow [2021-12-06 19:24:06,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:06,449 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:24:06,449 INFO L254 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] [2021-12-06 19:24:06,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 19:24:06,450 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-06 19:24:06,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:24:06,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1001567402, now seen corresponding path program 16 times [2021-12-06 19:24:06,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:24:06,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326266021] [2021-12-06 19:24:06,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:24:06,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:24:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:24:06,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:24:06,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:24:06,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326266021] [2021-12-06 19:24:06,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326266021] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:24:06,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:24:06,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-06 19:24:06,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046911337] [2021-12-06 19:24:06,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:24:06,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 19:24:06,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:24:06,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 19:24:06,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:24:06,735 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2021-12-06 19:24:06,736 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 960 transitions, 23498 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:06,736 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:24:06,736 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2021-12-06 19:24:06,736 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:24:22,352 INFO L129 PetriNetUnfolder]: 11747/36812 cut-off events. [2021-12-06 19:24:22,352 INFO L130 PetriNetUnfolder]: For 631742/636254 co-relation queries the response was YES. [2021-12-06 19:24:23,372 INFO L84 FinitePrefix]: Finished finitePrefix Result has 185981 conditions, 36812 events. 11747/36812 cut-off events. For 631742/636254 co-relation queries the response was YES. Maximal size of possible extension queue 2331. Compared 501563 event pairs, 2776 based on Foata normal form. 1450/37138 useless extension candidates. Maximal degree in co-relation 185789. Up to 8355 conditions per place. [2021-12-06 19:24:23,474 INFO L132 encePairwiseOnDemand]: 139/163 looper letters, 824 selfloop transitions, 505 changer transitions 0/1473 dead transitions. [2021-12-06 19:24:23,474 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 1473 transitions, 38436 flow [2021-12-06 19:24:23,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 19:24:23,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-06 19:24:23,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1878 transitions. [2021-12-06 19:24:23,476 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5486415425065732 [2021-12-06 19:24:23,476 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1878 transitions. [2021-12-06 19:24:23,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1878 transitions. [2021-12-06 19:24:23,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:24:23,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1878 transitions. [2021-12-06 19:24:23,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.42857142857143) internal successors, (1878), 21 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:23,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:23,481 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:23,481 INFO L186 Difference]: Start difference. First operand has 555 places, 960 transitions, 23498 flow. Second operand 21 states and 1878 transitions. [2021-12-06 19:24:23,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 1473 transitions, 38436 flow [2021-12-06 19:24:29,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 1473 transitions, 38231 flow, removed 82 selfloop flow, removed 8 redundant places. [2021-12-06 19:24:29,553 INFO L242 Difference]: Finished difference. Result has 575 places, 1128 transitions, 30687 flow [2021-12-06 19:24:29,554 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=23295, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=960, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=351, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=30687, PETRI_PLACES=575, PETRI_TRANSITIONS=1128} [2021-12-06 19:24:29,554 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 424 predicate places. [2021-12-06 19:24:29,554 INFO L470 AbstractCegarLoop]: Abstraction has has 575 places, 1128 transitions, 30687 flow [2021-12-06 19:24:29,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:29,555 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:24:29,555 INFO L254 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] [2021-12-06 19:24:29,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 19:24:29,555 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-06 19:24:29,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:24:29,555 INFO L85 PathProgramCache]: Analyzing trace with hash -574557066, now seen corresponding path program 17 times [2021-12-06 19:24:29,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:24:29,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238230371] [2021-12-06 19:24:29,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:24:29,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:24:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:24:30,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:24:30,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:24:30,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238230371] [2021-12-06 19:24:30,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238230371] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:24:30,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:24:30,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-12-06 19:24:30,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235299187] [2021-12-06 19:24:30,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:24:30,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 19:24:30,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:24:30,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 19:24:30,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2021-12-06 19:24:30,055 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2021-12-06 19:24:30,057 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 1128 transitions, 30687 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:30,057 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:24:30,057 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2021-12-06 19:24:30,057 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:24:56,149 INFO L129 PetriNetUnfolder]: 19046/52187 cut-off events. [2021-12-06 19:24:56,149 INFO L130 PetriNetUnfolder]: For 865863/865991 co-relation queries the response was YES. [2021-12-06 19:24:57,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 277159 conditions, 52187 events. 19046/52187 cut-off events. For 865863/865991 co-relation queries the response was YES. Maximal size of possible extension queue 2725. Compared 683525 event pairs, 11476 based on Foata normal form. 35/51317 useless extension candidates. Maximal degree in co-relation 276959. Up to 23007 conditions per place. [2021-12-06 19:24:57,916 INFO L132 encePairwiseOnDemand]: 135/163 looper letters, 1023 selfloop transitions, 421 changer transitions 0/1499 dead transitions. [2021-12-06 19:24:57,916 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 1499 transitions, 40878 flow [2021-12-06 19:24:57,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 19:24:57,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-06 19:24:57,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2084 transitions. [2021-12-06 19:24:57,919 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.532719836400818 [2021-12-06 19:24:57,919 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2084 transitions. [2021-12-06 19:24:57,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2084 transitions. [2021-12-06 19:24:57,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:24:57,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2084 transitions. [2021-12-06 19:24:57,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 86.83333333333333) internal successors, (2084), 24 states have internal predecessors, (2084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:57,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:57,923 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:24:57,923 INFO L186 Difference]: Start difference. First operand has 575 places, 1128 transitions, 30687 flow. Second operand 24 states and 2084 transitions. [2021-12-06 19:24:57,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 1499 transitions, 40878 flow [2021-12-06 19:25:13,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 590 places, 1499 transitions, 40412 flow, removed 193 selfloop flow, removed 8 redundant places. [2021-12-06 19:25:13,442 INFO L242 Difference]: Finished difference. Result has 604 places, 1207 transitions, 34241 flow [2021-12-06 19:25:13,443 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=30399, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=343, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=717, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=34241, PETRI_PLACES=604, PETRI_TRANSITIONS=1207} [2021-12-06 19:25:13,444 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 453 predicate places. [2021-12-06 19:25:13,444 INFO L470 AbstractCegarLoop]: Abstraction has has 604 places, 1207 transitions, 34241 flow [2021-12-06 19:25:13,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:25:13,444 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:25:13,444 INFO L254 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] [2021-12-06 19:25:13,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 19:25:13,445 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-06 19:25:13,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:25:13,445 INFO L85 PathProgramCache]: Analyzing trace with hash -448374944, now seen corresponding path program 18 times [2021-12-06 19:25:13,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:25:13,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97319065] [2021-12-06 19:25:13,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:25:13,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:25:13,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:25:13,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:25:13,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:25:13,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97319065] [2021-12-06 19:25:13,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97319065] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:25:13,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:25:13,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-12-06 19:25:13,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855610664] [2021-12-06 19:25:13,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:25:13,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 19:25:13,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:25:13,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 19:25:13,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2021-12-06 19:25:13,947 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2021-12-06 19:25:13,948 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 1207 transitions, 34241 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:25:13,948 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:25:13,948 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2021-12-06 19:25:13,948 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:25:42,640 INFO L129 PetriNetUnfolder]: 19046/52011 cut-off events. [2021-12-06 19:25:42,640 INFO L130 PetriNetUnfolder]: For 900427/900786 co-relation queries the response was YES. [2021-12-06 19:25:44,331 INFO L84 FinitePrefix]: Finished finitePrefix Result has 279203 conditions, 52011 events. 19046/52011 cut-off events. For 900427/900786 co-relation queries the response was YES. Maximal size of possible extension queue 2675. Compared 683035 event pairs, 7453 based on Foata normal form. 175/51348 useless extension candidates. Maximal degree in co-relation 278989. Up to 30442 conditions per place. [2021-12-06 19:25:44,488 INFO L132 encePairwiseOnDemand]: 135/163 looper letters, 1007 selfloop transitions, 458 changer transitions 0/1520 dead transitions. [2021-12-06 19:25:44,488 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 628 places, 1520 transitions, 41954 flow [2021-12-06 19:25:44,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 19:25:44,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-12-06 19:25:44,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2150 transitions. [2021-12-06 19:25:44,491 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5276073619631901 [2021-12-06 19:25:44,491 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2150 transitions. [2021-12-06 19:25:44,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2150 transitions. [2021-12-06 19:25:44,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:25:44,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2150 transitions. [2021-12-06 19:25:44,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 86.0) internal successors, (2150), 25 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:25:44,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 163.0) internal successors, (4238), 26 states have internal predecessors, (4238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:25:44,495 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 163.0) internal successors, (4238), 26 states have internal predecessors, (4238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:25:44,495 INFO L186 Difference]: Start difference. First operand has 604 places, 1207 transitions, 34241 flow. Second operand 25 states and 2150 transitions. [2021-12-06 19:25:44,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 628 places, 1520 transitions, 41954 flow [2021-12-06 19:26:00,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 621 places, 1520 transitions, 41401 flow, removed 222 selfloop flow, removed 7 redundant places. [2021-12-06 19:26:00,389 INFO L242 Difference]: Finished difference. Result has 626 places, 1224 transitions, 35117 flow [2021-12-06 19:26:00,390 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=33688, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=441, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=749, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=35117, PETRI_PLACES=626, PETRI_TRANSITIONS=1224} [2021-12-06 19:26:00,391 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 475 predicate places. [2021-12-06 19:26:00,391 INFO L470 AbstractCegarLoop]: Abstraction has has 626 places, 1224 transitions, 35117 flow [2021-12-06 19:26:00,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:00,391 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:26:00,391 INFO L254 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] [2021-12-06 19:26:00,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 19:26:00,391 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-06 19:26:00,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:26:00,392 INFO L85 PathProgramCache]: Analyzing trace with hash -702744116, now seen corresponding path program 19 times [2021-12-06 19:26:00,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:26:00,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446750579] [2021-12-06 19:26:00,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:26:00,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:26:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:00,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:26:00,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:26:00,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446750579] [2021-12-06 19:26:00,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446750579] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:26:00,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:26:00,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-12-06 19:26:00,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918716010] [2021-12-06 19:26:00,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:26:00,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 19:26:00,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:26:00,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 19:26:00,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2021-12-06 19:26:00,871 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2021-12-06 19:26:00,872 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 1224 transitions, 35117 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:00,872 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:26:00,872 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2021-12-06 19:26:00,872 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:26:29,076 INFO L129 PetriNetUnfolder]: 19046/51996 cut-off events. [2021-12-06 19:26:29,076 INFO L130 PetriNetUnfolder]: For 889555/889936 co-relation queries the response was YES. [2021-12-06 19:26:30,787 INFO L84 FinitePrefix]: Finished finitePrefix Result has 279751 conditions, 51996 events. 19046/51996 cut-off events. For 889555/889936 co-relation queries the response was YES. Maximal size of possible extension queue 2678. Compared 683002 event pairs, 7573 based on Foata normal form. 152/51289 useless extension candidates. Maximal degree in co-relation 279531. Up to 30442 conditions per place. [2021-12-06 19:26:30,943 INFO L132 encePairwiseOnDemand]: 137/163 looper letters, 1046 selfloop transitions, 432 changer transitions 0/1533 dead transitions. [2021-12-06 19:26:30,943 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 651 places, 1533 transitions, 42818 flow [2021-12-06 19:26:30,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-06 19:26:30,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-12-06 19:26:30,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2229 transitions. [2021-12-06 19:26:30,946 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.525955639452572 [2021-12-06 19:26:30,946 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2229 transitions. [2021-12-06 19:26:30,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2229 transitions. [2021-12-06 19:26:30,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:26:30,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2229 transitions. [2021-12-06 19:26:30,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 85.73076923076923) internal successors, (2229), 26 states have internal predecessors, (2229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:30,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 163.0) internal successors, (4401), 27 states have internal predecessors, (4401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:30,951 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 163.0) internal successors, (4401), 27 states have internal predecessors, (4401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:30,951 INFO L186 Difference]: Start difference. First operand has 626 places, 1224 transitions, 35117 flow. Second operand 26 states and 2229 transitions. [2021-12-06 19:26:30,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 651 places, 1533 transitions, 42818 flow [2021-12-06 19:26:46,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 636 places, 1533 transitions, 41872 flow, removed 86 selfloop flow, removed 15 redundant places. [2021-12-06 19:26:46,861 INFO L242 Difference]: Finished difference. Result has 641 places, 1239 transitions, 35446 flow [2021-12-06 19:26:46,862 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=34171, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=417, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=792, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=35446, PETRI_PLACES=641, PETRI_TRANSITIONS=1239} [2021-12-06 19:26:46,862 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 490 predicate places. [2021-12-06 19:26:46,862 INFO L470 AbstractCegarLoop]: Abstraction has has 641 places, 1239 transitions, 35446 flow [2021-12-06 19:26:46,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:46,862 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:26:46,862 INFO L254 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] [2021-12-06 19:26:46,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 19:26:46,863 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-06 19:26:46,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:26:46,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1491595106, now seen corresponding path program 20 times [2021-12-06 19:26:46,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:26:46,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483939684] [2021-12-06 19:26:46,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:26:46,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:26:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:26:47,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:26:47,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:26:47,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483939684] [2021-12-06 19:26:47,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483939684] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:26:47,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:26:47,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-12-06 19:26:47,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376287420] [2021-12-06 19:26:47,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:26:47,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 19:26:47,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:26:47,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 19:26:47,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2021-12-06 19:26:47,334 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2021-12-06 19:26:47,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 641 places, 1239 transitions, 35446 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:26:47,336 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:26:47,336 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2021-12-06 19:26:47,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:27:15,690 INFO L129 PetriNetUnfolder]: 19043/52074 cut-off events. [2021-12-06 19:27:15,690 INFO L130 PetriNetUnfolder]: For 898091/898223 co-relation queries the response was YES. [2021-12-06 19:27:17,459 INFO L84 FinitePrefix]: Finished finitePrefix Result has 280442 conditions, 52074 events. 19043/52074 cut-off events. For 898091/898223 co-relation queries the response was YES. Maximal size of possible extension queue 2675. Compared 684361 event pairs, 7792 based on Foata normal form. 84/51271 useless extension candidates. Maximal degree in co-relation 280217. Up to 30442 conditions per place. [2021-12-06 19:27:17,616 INFO L132 encePairwiseOnDemand]: 137/163 looper letters, 1062 selfloop transitions, 441 changer transitions 0/1558 dead transitions. [2021-12-06 19:27:17,616 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 666 places, 1558 transitions, 43660 flow [2021-12-06 19:27:17,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-06 19:27:17,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-12-06 19:27:17,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2229 transitions. [2021-12-06 19:27:17,619 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.525955639452572 [2021-12-06 19:27:17,619 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2229 transitions. [2021-12-06 19:27:17,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2229 transitions. [2021-12-06 19:27:17,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:27:17,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2229 transitions. [2021-12-06 19:27:17,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 85.73076923076923) internal successors, (2229), 26 states have internal predecessors, (2229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:27:17,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 163.0) internal successors, (4401), 27 states have internal predecessors, (4401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:27:17,624 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 163.0) internal successors, (4401), 27 states have internal predecessors, (4401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:27:17,624 INFO L186 Difference]: Start difference. First operand has 641 places, 1239 transitions, 35446 flow. Second operand 26 states and 2229 transitions. [2021-12-06 19:27:17,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 666 places, 1558 transitions, 43660 flow [2021-12-06 19:27:33,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 650 places, 1558 transitions, 42612 flow, removed 125 selfloop flow, removed 16 redundant places. [2021-12-06 19:27:33,252 INFO L242 Difference]: Finished difference. Result has 657 places, 1263 transitions, 36425 flow [2021-12-06 19:27:33,253 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=34410, PETRI_DIFFERENCE_MINUEND_PLACES=625, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=417, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=801, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=36425, PETRI_PLACES=657, PETRI_TRANSITIONS=1263} [2021-12-06 19:27:33,253 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 506 predicate places. [2021-12-06 19:27:33,253 INFO L470 AbstractCegarLoop]: Abstraction has has 657 places, 1263 transitions, 36425 flow [2021-12-06 19:27:33,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:27:33,253 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:27:33,254 INFO L254 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] [2021-12-06 19:27:33,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 19:27:33,254 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-06 19:27:33,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:27:33,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1433695192, now seen corresponding path program 21 times [2021-12-06 19:27:33,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:27:33,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598816774] [2021-12-06 19:27:33,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:27:33,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:27:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:27:33,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:27:33,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:27:33,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598816774] [2021-12-06 19:27:33,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598816774] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:27:33,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:27:33,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-12-06 19:27:33,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759116130] [2021-12-06 19:27:33,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:27:33,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 19:27:33,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:27:33,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 19:27:33,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2021-12-06 19:27:33,712 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2021-12-06 19:27:33,713 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 657 places, 1263 transitions, 36425 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:27:33,713 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:27:33,713 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2021-12-06 19:27:33,713 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:28:03,455 INFO L129 PetriNetUnfolder]: 19040/52233 cut-off events. [2021-12-06 19:28:03,456 INFO L130 PetriNetUnfolder]: For 918593/918885 co-relation queries the response was YES. [2021-12-06 19:28:05,442 INFO L84 FinitePrefix]: Finished finitePrefix Result has 281272 conditions, 52233 events. 19040/52233 cut-off events. For 918593/918885 co-relation queries the response was YES. Maximal size of possible extension queue 2673. Compared 686453 event pairs, 8126 based on Foata normal form. 95/51433 useless extension candidates. Maximal degree in co-relation 281041. Up to 30442 conditions per place. [2021-12-06 19:28:05,600 INFO L132 encePairwiseOnDemand]: 137/163 looper letters, 1059 selfloop transitions, 449 changer transitions 0/1563 dead transitions. [2021-12-06 19:28:05,600 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 682 places, 1563 transitions, 44388 flow [2021-12-06 19:28:05,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-06 19:28:05,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-12-06 19:28:05,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2221 transitions. [2021-12-06 19:28:05,603 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.524067956583294 [2021-12-06 19:28:05,603 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2221 transitions. [2021-12-06 19:28:05,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2221 transitions. [2021-12-06 19:28:05,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:28:05,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2221 transitions. [2021-12-06 19:28:05,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 85.42307692307692) internal successors, (2221), 26 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:28:05,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 163.0) internal successors, (4401), 27 states have internal predecessors, (4401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:28:05,608 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 163.0) internal successors, (4401), 27 states have internal predecessors, (4401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:28:05,608 INFO L186 Difference]: Start difference. First operand has 657 places, 1263 transitions, 36425 flow. Second operand 26 states and 2221 transitions. [2021-12-06 19:28:05,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 682 places, 1563 transitions, 44388 flow [2021-12-06 19:28:21,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 669 places, 1563 transitions, 43162 flow, removed 138 selfloop flow, removed 13 redundant places. [2021-12-06 19:28:21,733 INFO L242 Difference]: Finished difference. Result has 676 places, 1287 transitions, 37238 flow [2021-12-06 19:28:21,734 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=35217, PETRI_DIFFERENCE_MINUEND_PLACES=644, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=425, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=817, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=37238, PETRI_PLACES=676, PETRI_TRANSITIONS=1287} [2021-12-06 19:28:21,735 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 525 predicate places. [2021-12-06 19:28:21,735 INFO L470 AbstractCegarLoop]: Abstraction has has 676 places, 1287 transitions, 37238 flow [2021-12-06 19:28:21,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:28:21,735 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:28:21,735 INFO L254 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] [2021-12-06 19:28:21,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 19:28:21,736 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-06 19:28:21,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:28:21,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1528794598, now seen corresponding path program 22 times [2021-12-06 19:28:21,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:28:21,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511903938] [2021-12-06 19:28:21,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:28:21,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:28:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:28:22,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:28:22,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:28:22,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511903938] [2021-12-06 19:28:22,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511903938] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:28:22,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:28:22,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-12-06 19:28:22,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898217047] [2021-12-06 19:28:22,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:28:22,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 19:28:22,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:28:22,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 19:28:22,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2021-12-06 19:28:22,259 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2021-12-06 19:28:22,260 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 676 places, 1287 transitions, 37238 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:28:22,260 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:28:22,260 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2021-12-06 19:28:22,260 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:28:52,481 INFO L129 PetriNetUnfolder]: 19479/53603 cut-off events. [2021-12-06 19:28:52,482 INFO L130 PetriNetUnfolder]: For 962506/962639 co-relation queries the response was YES. [2021-12-06 19:28:54,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 289905 conditions, 53603 events. 19479/53603 cut-off events. For 962506/962639 co-relation queries the response was YES. Maximal size of possible extension queue 2801. Compared 705681 event pairs, 9567 based on Foata normal form. 53/52782 useless extension candidates. Maximal degree in co-relation 289668. Up to 28181 conditions per place. [2021-12-06 19:28:54,614 INFO L132 encePairwiseOnDemand]: 136/163 looper letters, 1099 selfloop transitions, 483 changer transitions 0/1637 dead transitions. [2021-12-06 19:28:54,614 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 699 places, 1637 transitions, 46791 flow [2021-12-06 19:28:54,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 19:28:54,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-06 19:28:54,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2065 transitions. [2021-12-06 19:28:54,616 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5278629856850716 [2021-12-06 19:28:54,617 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2065 transitions. [2021-12-06 19:28:54,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2065 transitions. [2021-12-06 19:28:54,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:28:54,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2065 transitions. [2021-12-06 19:28:54,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 86.04166666666667) internal successors, (2065), 24 states have internal predecessors, (2065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:28:54,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:28:54,621 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:28:54,621 INFO L186 Difference]: Start difference. First operand has 676 places, 1287 transitions, 37238 flow. Second operand 24 states and 2065 transitions. [2021-12-06 19:28:54,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 699 places, 1637 transitions, 46791 flow [2021-12-06 19:29:11,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 685 places, 1637 transitions, 45190 flow, removed 146 selfloop flow, removed 14 redundant places. [2021-12-06 19:29:11,903 INFO L242 Difference]: Finished difference. Result has 698 places, 1356 transitions, 39492 flow [2021-12-06 19:29:11,904 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=35709, PETRI_DIFFERENCE_MINUEND_PLACES=662, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=415, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=814, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=39492, PETRI_PLACES=698, PETRI_TRANSITIONS=1356} [2021-12-06 19:29:11,904 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 547 predicate places. [2021-12-06 19:29:11,904 INFO L470 AbstractCegarLoop]: Abstraction has has 698 places, 1356 transitions, 39492 flow [2021-12-06 19:29:11,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:29:11,905 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:29:11,905 INFO L254 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] [2021-12-06 19:29:11,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 19:29:11,905 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-06 19:29:11,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:29:11,905 INFO L85 PathProgramCache]: Analyzing trace with hash 121333106, now seen corresponding path program 23 times [2021-12-06 19:29:11,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:29:11,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404637320] [2021-12-06 19:29:11,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:29:11,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:29:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:29:12,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:29:12,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:29:12,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404637320] [2021-12-06 19:29:12,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404637320] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:29:12,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:29:12,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-12-06 19:29:12,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746830086] [2021-12-06 19:29:12,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:29:12,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 19:29:12,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:29:12,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 19:29:12,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2021-12-06 19:29:12,361 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2021-12-06 19:29:12,362 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 698 places, 1356 transitions, 39492 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:29:12,362 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:29:12,362 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2021-12-06 19:29:12,362 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:29:45,922 INFO L129 PetriNetUnfolder]: 20377/56212 cut-off events. [2021-12-06 19:29:45,923 INFO L130 PetriNetUnfolder]: For 1026177/1026335 co-relation queries the response was YES. [2021-12-06 19:29:48,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 305350 conditions, 56212 events. 20377/56212 cut-off events. For 1026177/1026335 co-relation queries the response was YES. Maximal size of possible extension queue 2978. Compared 747093 event pairs, 10476 based on Foata normal form. 69/55309 useless extension candidates. Maximal degree in co-relation 305101. Up to 28181 conditions per place. [2021-12-06 19:29:48,325 INFO L132 encePairwiseOnDemand]: 135/163 looper letters, 1179 selfloop transitions, 514 changer transitions 0/1748 dead transitions. [2021-12-06 19:29:48,326 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 721 places, 1748 transitions, 50455 flow [2021-12-06 19:29:48,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 19:29:48,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-06 19:29:48,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2083 transitions. [2021-12-06 19:29:48,328 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5324642126789366 [2021-12-06 19:29:48,328 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2083 transitions. [2021-12-06 19:29:48,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2083 transitions. [2021-12-06 19:29:48,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:29:48,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2083 transitions. [2021-12-06 19:29:48,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 86.79166666666667) internal successors, (2083), 24 states have internal predecessors, (2083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:29:48,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:29:48,332 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:29:48,333 INFO L186 Difference]: Start difference. First operand has 698 places, 1356 transitions, 39492 flow. Second operand 24 states and 2083 transitions. [2021-12-06 19:29:48,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 721 places, 1748 transitions, 50455 flow [2021-12-06 19:30:10,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 713 places, 1748 transitions, 49845 flow, removed 220 selfloop flow, removed 8 redundant places. [2021-12-06 19:30:10,257 INFO L242 Difference]: Finished difference. Result has 725 places, 1443 transitions, 43616 flow [2021-12-06 19:30:10,259 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=38986, PETRI_DIFFERENCE_MINUEND_PLACES=690, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=428, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=853, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=43616, PETRI_PLACES=725, PETRI_TRANSITIONS=1443} [2021-12-06 19:30:10,259 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 574 predicate places. [2021-12-06 19:30:10,259 INFO L470 AbstractCegarLoop]: Abstraction has has 725 places, 1443 transitions, 43616 flow [2021-12-06 19:30:10,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:10,259 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:30:10,259 INFO L254 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] [2021-12-06 19:30:10,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 19:30:10,260 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-06 19:30:10,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:30:10,260 INFO L85 PathProgramCache]: Analyzing trace with hash -890162498, now seen corresponding path program 24 times [2021-12-06 19:30:10,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:30:10,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074097403] [2021-12-06 19:30:10,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:30:10,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:30:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:30:10,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:30:10,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:30:10,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074097403] [2021-12-06 19:30:10,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074097403] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:30:10,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:30:10,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-12-06 19:30:10,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376719724] [2021-12-06 19:30:10,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:30:10,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 19:30:10,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:30:10,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 19:30:10,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2021-12-06 19:30:10,758 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2021-12-06 19:30:10,759 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 725 places, 1443 transitions, 43616 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:10,759 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:30:10,759 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2021-12-06 19:30:10,759 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:30:47,004 INFO L129 PetriNetUnfolder]: 20951/57904 cut-off events. [2021-12-06 19:30:47,004 INFO L130 PetriNetUnfolder]: For 1110025/1110340 co-relation queries the response was YES. [2021-12-06 19:30:49,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 317453 conditions, 57904 events. 20951/57904 cut-off events. For 1110025/1110340 co-relation queries the response was YES. Maximal size of possible extension queue 3054. Compared 773589 event pairs, 10211 based on Foata normal form. 118/57070 useless extension candidates. Maximal degree in co-relation 317192. Up to 28181 conditions per place. [2021-12-06 19:30:49,695 INFO L132 encePairwiseOnDemand]: 135/163 looper letters, 1235 selfloop transitions, 525 changer transitions 0/1815 dead transitions. [2021-12-06 19:30:49,695 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 748 places, 1815 transitions, 54323 flow [2021-12-06 19:30:49,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 19:30:49,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-06 19:30:49,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2078 transitions. [2021-12-06 19:30:49,697 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5311860940695297 [2021-12-06 19:30:49,697 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2078 transitions. [2021-12-06 19:30:49,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2078 transitions. [2021-12-06 19:30:49,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:30:49,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2078 transitions. [2021-12-06 19:30:49,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 86.58333333333333) internal successors, (2078), 24 states have internal predecessors, (2078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:49,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:49,702 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:30:49,702 INFO L186 Difference]: Start difference. First operand has 725 places, 1443 transitions, 43616 flow. Second operand 24 states and 2078 transitions. [2021-12-06 19:30:49,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 748 places, 1815 transitions, 54323 flow [2021-12-06 19:31:14,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 739 places, 1815 transitions, 53631 flow, removed 253 selfloop flow, removed 9 redundant places. [2021-12-06 19:31:15,001 INFO L242 Difference]: Finished difference. Result has 749 places, 1510 transitions, 47140 flow [2021-12-06 19:31:15,002 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=42937, PETRI_DIFFERENCE_MINUEND_PLACES=716, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=459, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=928, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=47140, PETRI_PLACES=749, PETRI_TRANSITIONS=1510} [2021-12-06 19:31:15,003 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 598 predicate places. [2021-12-06 19:31:15,003 INFO L470 AbstractCegarLoop]: Abstraction has has 749 places, 1510 transitions, 47140 flow [2021-12-06 19:31:15,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:15,003 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:31:15,003 INFO L254 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] [2021-12-06 19:31:15,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-06 19:31:15,003 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-06 19:31:15,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:31:15,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1670178292, now seen corresponding path program 25 times [2021-12-06 19:31:15,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:31:15,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379128280] [2021-12-06 19:31:15,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:31:15,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:31:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:31:15,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:31:15,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:31:15,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379128280] [2021-12-06 19:31:15,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379128280] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:31:15,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:31:15,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-12-06 19:31:15,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161755953] [2021-12-06 19:31:15,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:31:15,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 19:31:15,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:31:15,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 19:31:15,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2021-12-06 19:31:15,508 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2021-12-06 19:31:15,509 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 749 places, 1510 transitions, 47140 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:15,509 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:31:15,509 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2021-12-06 19:31:15,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:31:53,610 INFO L129 PetriNetUnfolder]: 20948/57977 cut-off events. [2021-12-06 19:31:53,610 INFO L130 PetriNetUnfolder]: For 1136742/1137064 co-relation queries the response was YES. [2021-12-06 19:31:56,227 INFO L84 FinitePrefix]: Finished finitePrefix Result has 320079 conditions, 57977 events. 20948/57977 cut-off events. For 1136742/1137064 co-relation queries the response was YES. Maximal size of possible extension queue 3111. Compared 776492 event pairs, 10546 based on Foata normal form. 127/57092 useless extension candidates. Maximal degree in co-relation 319808. Up to 28181 conditions per place. [2021-12-06 19:31:56,408 INFO L132 encePairwiseOnDemand]: 135/163 looper letters, 1238 selfloop transitions, 561 changer transitions 0/1854 dead transitions. [2021-12-06 19:31:56,409 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 773 places, 1854 transitions, 56818 flow [2021-12-06 19:31:56,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 19:31:56,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-12-06 19:31:56,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2168 transitions. [2021-12-06 19:31:56,411 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5320245398773006 [2021-12-06 19:31:56,411 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2168 transitions. [2021-12-06 19:31:56,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2168 transitions. [2021-12-06 19:31:56,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:31:56,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2168 transitions. [2021-12-06 19:31:56,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 86.72) internal successors, (2168), 25 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:56,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 163.0) internal successors, (4238), 26 states have internal predecessors, (4238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:56,415 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 163.0) internal successors, (4238), 26 states have internal predecessors, (4238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:31:56,415 INFO L186 Difference]: Start difference. First operand has 749 places, 1510 transitions, 47140 flow. Second operand 25 states and 2168 transitions. [2021-12-06 19:31:56,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 773 places, 1854 transitions, 56818 flow [2021-12-06 19:32:23,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 762 places, 1854 transitions, 56053 flow, removed 261 selfloop flow, removed 11 redundant places. [2021-12-06 19:32:23,915 INFO L242 Difference]: Finished difference. Result has 770 places, 1543 transitions, 49422 flow [2021-12-06 19:32:23,916 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=46385, PETRI_DIFFERENCE_MINUEND_PLACES=738, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=528, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=952, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=49422, PETRI_PLACES=770, PETRI_TRANSITIONS=1543} [2021-12-06 19:32:23,916 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 619 predicate places. [2021-12-06 19:32:23,916 INFO L470 AbstractCegarLoop]: Abstraction has has 770 places, 1543 transitions, 49422 flow [2021-12-06 19:32:23,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:32:23,917 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:32:23,917 INFO L254 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] [2021-12-06 19:32:23,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-06 19:32:23,917 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-06 19:32:23,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:32:23,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1467170094, now seen corresponding path program 26 times [2021-12-06 19:32:23,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:32:23,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212449101] [2021-12-06 19:32:23,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:32:23,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:32:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:32:24,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:32:24,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:32:24,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212449101] [2021-12-06 19:32:24,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212449101] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:32:24,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:32:24,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-12-06 19:32:24,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149511675] [2021-12-06 19:32:24,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:32:24,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 19:32:24,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:32:24,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 19:32:24,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2021-12-06 19:32:24,340 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2021-12-06 19:32:24,341 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 770 places, 1543 transitions, 49422 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:32:24,341 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:32:24,341 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2021-12-06 19:32:24,341 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:33:05,188 INFO L129 PetriNetUnfolder]: 21712/60094 cut-off events. [2021-12-06 19:33:05,188 INFO L130 PetriNetUnfolder]: For 1213483/1213730 co-relation queries the response was YES. [2021-12-06 19:33:07,986 INFO L84 FinitePrefix]: Finished finitePrefix Result has 333468 conditions, 60094 events. 21712/60094 cut-off events. For 1213483/1213730 co-relation queries the response was YES. Maximal size of possible extension queue 3222. Compared 808742 event pairs, 10599 based on Foata normal form. 77/59149 useless extension candidates. Maximal degree in co-relation 333189. Up to 28181 conditions per place. [2021-12-06 19:33:08,172 INFO L132 encePairwiseOnDemand]: 135/163 looper letters, 1330 selfloop transitions, 536 changer transitions 0/1921 dead transitions. [2021-12-06 19:33:08,173 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 793 places, 1921 transitions, 60888 flow [2021-12-06 19:33:08,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 19:33:08,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-06 19:33:08,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2080 transitions. [2021-12-06 19:33:08,175 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5316973415132924 [2021-12-06 19:33:08,175 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2080 transitions. [2021-12-06 19:33:08,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2080 transitions. [2021-12-06 19:33:08,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:33:08,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2080 transitions. [2021-12-06 19:33:08,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 86.66666666666667) internal successors, (2080), 24 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:33:08,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:33:08,182 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:33:08,182 INFO L186 Difference]: Start difference. First operand has 770 places, 1543 transitions, 49422 flow. Second operand 24 states and 2080 transitions. [2021-12-06 19:33:08,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 793 places, 1921 transitions, 60888 flow [2021-12-06 19:33:36,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 780 places, 1921 transitions, 60221 flow, removed 192 selfloop flow, removed 13 redundant places. [2021-12-06 19:33:36,382 INFO L242 Difference]: Finished difference. Result has 791 places, 1614 transitions, 53366 flow [2021-12-06 19:33:36,383 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=48768, PETRI_DIFFERENCE_MINUEND_PLACES=757, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=466, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1017, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=53366, PETRI_PLACES=791, PETRI_TRANSITIONS=1614} [2021-12-06 19:33:36,384 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 640 predicate places. [2021-12-06 19:33:36,384 INFO L470 AbstractCegarLoop]: Abstraction has has 791 places, 1614 transitions, 53366 flow [2021-12-06 19:33:36,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:33:36,384 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:33:36,385 INFO L254 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] [2021-12-06 19:33:36,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-06 19:33:36,385 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-06 19:33:36,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:33:36,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1730142004, now seen corresponding path program 27 times [2021-12-06 19:33:36,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:33:36,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334363320] [2021-12-06 19:33:36,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:33:36,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:33:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:33:36,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:36,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:33:36,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334363320] [2021-12-06 19:33:36,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334363320] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:33:36,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:33:36,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-12-06 19:33:36,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450806234] [2021-12-06 19:33:36,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:33:36,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 19:33:36,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:33:36,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 19:33:36,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2021-12-06 19:33:36,870 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2021-12-06 19:33:36,871 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 791 places, 1614 transitions, 53366 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:33:36,871 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:33:36,871 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2021-12-06 19:33:36,871 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand