./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7772da9c-791a-40ef-8517-867cc2b7e246/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7772da9c-791a-40ef-8517-867cc2b7e246/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7772da9c-791a-40ef-8517-867cc2b7e246/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7772da9c-791a-40ef-8517-867cc2b7e246/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7772da9c-791a-40ef-8517-867cc2b7e246/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7772da9c-791a-40ef-8517-867cc2b7e246/bin/uautomizer-tPACEb0tL8 --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 841ea5a5ca051cc33dfe29d877ccdea4b63526a0ee61a2de18869a9ba1858c4b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:44:02,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:44:02,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:44:02,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:44:02,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:44:02,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:44:02,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:44:02,325 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:44:02,333 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:44:02,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:44:02,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:44:02,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:44:02,346 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:44:02,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:44:02,353 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:44:02,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:44:02,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:44:02,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:44:02,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:44:02,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:44:02,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:44:02,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:44:02,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:44:02,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:44:02,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:44:02,393 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:44:02,394 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:44:02,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:44:02,396 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:44:02,398 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:44:02,398 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:44:02,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:44:02,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:44:02,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:44:02,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:44:02,407 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:44:02,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:44:02,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:44:02,408 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:44:02,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:44:02,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:44:02,411 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7772da9c-791a-40ef-8517-867cc2b7e246/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:44:02,462 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:44:02,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:44:02,463 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:44:02,463 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:44:02,464 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:44:02,465 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:44:02,466 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:44:02,466 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:44:02,466 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:44:02,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:44:02,468 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:44:02,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:44:02,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:44:02,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:44:02,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:44:02,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:44:02,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:44:02,470 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:44:02,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:44:02,470 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:44:02,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:44:02,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:44:02,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:44:02,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:44:02,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:44:02,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:44:02,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:44:02,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:44:02,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:44:02,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:44:02,475 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:44:02,475 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:44:02,476 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:44:02,476 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_7772da9c-791a-40ef-8517-867cc2b7e246/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7772da9c-791a-40ef-8517-867cc2b7e246/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 841ea5a5ca051cc33dfe29d877ccdea4b63526a0ee61a2de18869a9ba1858c4b [2022-11-16 11:44:02,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:44:02,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:44:02,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:44:02,802 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:44:02,813 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:44:02,815 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7772da9c-791a-40ef-8517-867cc2b7e246/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2022-11-16 11:44:02,902 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7772da9c-791a-40ef-8517-867cc2b7e246/bin/uautomizer-tPACEb0tL8/data/140eb3a03/3d29f6cddeb34ceebe4a89ccd853a470/FLAG110486a39 [2022-11-16 11:44:03,399 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:44:03,400 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7772da9c-791a-40ef-8517-867cc2b7e246/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2022-11-16 11:44:03,407 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7772da9c-791a-40ef-8517-867cc2b7e246/bin/uautomizer-tPACEb0tL8/data/140eb3a03/3d29f6cddeb34ceebe4a89ccd853a470/FLAG110486a39 [2022-11-16 11:44:03,745 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7772da9c-791a-40ef-8517-867cc2b7e246/bin/uautomizer-tPACEb0tL8/data/140eb3a03/3d29f6cddeb34ceebe4a89ccd853a470 [2022-11-16 11:44:03,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:44:03,749 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:44:03,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:44:03,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:44:03,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:44:03,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:44:03" (1/1) ... [2022-11-16 11:44:03,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74034276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:44:03, skipping insertion in model container [2022-11-16 11:44:03,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:44:03" (1/1) ... [2022-11-16 11:44:03,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:44:03,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:44:04,061 WARN L229 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_7772da9c-791a-40ef-8517-867cc2b7e246/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c[4007,4020] [2022-11-16 11:44:04,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:44:04,081 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:44:04,115 WARN L229 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_7772da9c-791a-40ef-8517-867cc2b7e246/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c[4007,4020] [2022-11-16 11:44:04,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:44:04,139 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:44:04,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:44:04 WrapperNode [2022-11-16 11:44:04,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:44:04,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:44:04,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:44:04,142 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:44:04,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:44:04" (1/1) ... [2022-11-16 11:44:04,163 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:44:04" (1/1) ... [2022-11-16 11:44:04,210 INFO L138 Inliner]: procedures = 26, calls = 73, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 267 [2022-11-16 11:44:04,210 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:44:04,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:44:04,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:44:04,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:44:04,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:44:04" (1/1) ... [2022-11-16 11:44:04,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:44:04" (1/1) ... [2022-11-16 11:44:04,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:44:04" (1/1) ... [2022-11-16 11:44:04,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:44:04" (1/1) ... [2022-11-16 11:44:04,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:44:04" (1/1) ... [2022-11-16 11:44:04,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:44:04" (1/1) ... [2022-11-16 11:44:04,246 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:44:04" (1/1) ... [2022-11-16 11:44:04,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:44:04" (1/1) ... [2022-11-16 11:44:04,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:44:04,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:44:04,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:44:04,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:44:04,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:44:04" (1/1) ... [2022-11-16 11:44:04,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:44:04,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7772da9c-791a-40ef-8517-867cc2b7e246/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:44:04,310 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7772da9c-791a-40ef-8517-867cc2b7e246/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:44:04,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7772da9c-791a-40ef-8517-867cc2b7e246/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:44:04,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:44:04,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:44:04,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:44:04,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:44:04,382 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:44:04,382 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:44:04,382 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:44:04,384 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:44:04,384 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:44:04,385 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:44:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-16 11:44:04,385 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-16 11:44:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:44:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:44:04,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:44:04,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:44:04,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:44:04,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:44:04,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:44:04,388 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:44:04,556 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:44:04,559 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:44:05,099 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:44:05,332 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:44:05,333 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-16 11:44:05,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:44:05 BoogieIcfgContainer [2022-11-16 11:44:05,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:44:05,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:44:05,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:44:05,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:44:05,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:44:03" (1/3) ... [2022-11-16 11:44:05,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b694ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:44:05, skipping insertion in model container [2022-11-16 11:44:05,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:44:04" (2/3) ... [2022-11-16 11:44:05,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b694ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:44:05, skipping insertion in model container [2022-11-16 11:44:05,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:44:05" (3/3) ... [2022-11-16 11:44:05,350 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2022-11-16 11:44:05,364 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:44:05,397 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:44:05,397 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:44:05,397 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:44:05,521 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 11:44:05,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 239 transitions, 510 flow [2022-11-16 11:44:05,710 INFO L130 PetriNetUnfolder]: 18/235 cut-off events. [2022-11-16 11:44:05,710 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-16 11:44:05,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 235 events. 18/235 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 124 event pairs, 0 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 201. Up to 3 conditions per place. [2022-11-16 11:44:05,722 INFO L82 GeneralOperation]: Start removeDead. Operand has 234 places, 239 transitions, 510 flow [2022-11-16 11:44:05,739 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 222 transitions, 468 flow [2022-11-16 11:44:05,768 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:44:05,776 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3e66c2a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:44:05,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-16 11:44:05,847 INFO L130 PetriNetUnfolder]: 18/221 cut-off events. [2022-11-16 11:44:05,848 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-16 11:44:05,848 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:44:05,849 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:44:05,850 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-16 11:44:05,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:05,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1699147407, now seen corresponding path program 1 times [2022-11-16 11:44:05,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:05,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503539962] [2022-11-16 11:44:05,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:05,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:06,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:06,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:06,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:06,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503539962] [2022-11-16 11:44:06,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503539962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:06,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:06,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:44:06,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291052307] [2022-11-16 11:44:06,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:06,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:44:06,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:06,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:44:06,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:44:06,475 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 239 [2022-11-16 11:44:06,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 222 transitions, 468 flow. Second operand has 2 states, 2 states have (on average 220.5) internal successors, (441), 2 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:06,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:44:06,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 239 [2022-11-16 11:44:06,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:44:06,739 INFO L130 PetriNetUnfolder]: 101/488 cut-off events. [2022-11-16 11:44:06,739 INFO L131 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2022-11-16 11:44:06,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 488 events. 101/488 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1672 event pairs, 45 based on Foata normal form. 88/517 useless extension candidates. Maximal degree in co-relation 480. Up to 133 conditions per place. [2022-11-16 11:44:06,755 INFO L137 encePairwiseOnDemand]: 227/239 looper letters, 12 selfloop transitions, 0 changer transitions 7/210 dead transitions. [2022-11-16 11:44:06,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 210 transitions, 468 flow [2022-11-16 11:44:06,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:44:06,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:44:06,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 452 transitions. [2022-11-16 11:44:06,784 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9456066945606695 [2022-11-16 11:44:06,786 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 452 transitions. [2022-11-16 11:44:06,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 452 transitions. [2022-11-16 11:44:06,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:44:06,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 452 transitions. [2022-11-16 11:44:06,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 226.0) internal successors, (452), 2 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:06,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:06,812 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:06,815 INFO L175 Difference]: Start difference. First operand has 217 places, 222 transitions, 468 flow. Second operand 2 states and 452 transitions. [2022-11-16 11:44:06,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 210 transitions, 468 flow [2022-11-16 11:44:06,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 210 transitions, 452 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-16 11:44:06,829 INFO L231 Difference]: Finished difference. Result has 210 places, 203 transitions, 414 flow [2022-11-16 11:44:06,832 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=414, PETRI_PLACES=210, PETRI_TRANSITIONS=203} [2022-11-16 11:44:06,838 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, -7 predicate places. [2022-11-16 11:44:06,839 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 203 transitions, 414 flow [2022-11-16 11:44:06,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 220.5) internal successors, (441), 2 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:06,841 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:44:06,841 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:44:06,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:44:06,842 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-16 11:44:06,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:06,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1964607494, now seen corresponding path program 1 times [2022-11-16 11:44:06,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:06,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534715305] [2022-11-16 11:44:06,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:06,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:07,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:07,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:07,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534715305] [2022-11-16 11:44:07,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534715305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:07,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:07,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:44:07,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483941672] [2022-11-16 11:44:07,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:07,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:44:07,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:07,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:44:07,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:44:07,509 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 239 [2022-11-16 11:44:07,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 203 transitions, 414 flow. Second operand has 4 states, 4 states have (on average 206.75) internal successors, (827), 4 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:07,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:44:07,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 239 [2022-11-16 11:44:07,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:44:08,011 INFO L130 PetriNetUnfolder]: 692/1436 cut-off events. [2022-11-16 11:44:08,012 INFO L131 PetriNetUnfolder]: For 110/111 co-relation queries the response was YES. [2022-11-16 11:44:08,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2458 conditions, 1436 events. 692/1436 cut-off events. For 110/111 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 7667 event pairs, 65 based on Foata normal form. 0/1367 useless extension candidates. Maximal degree in co-relation 2455. Up to 335 conditions per place. [2022-11-16 11:44:08,032 INFO L137 encePairwiseOnDemand]: 234/239 looper letters, 51 selfloop transitions, 5 changer transitions 0/236 dead transitions. [2022-11-16 11:44:08,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 236 transitions, 599 flow [2022-11-16 11:44:08,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:44:08,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:44:08,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1073 transitions. [2022-11-16 11:44:08,038 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.897907949790795 [2022-11-16 11:44:08,038 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1073 transitions. [2022-11-16 11:44:08,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1073 transitions. [2022-11-16 11:44:08,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:44:08,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1073 transitions. [2022-11-16 11:44:08,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 214.6) internal successors, (1073), 5 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:08,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:08,050 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:08,051 INFO L175 Difference]: Start difference. First operand has 210 places, 203 transitions, 414 flow. Second operand 5 states and 1073 transitions. [2022-11-16 11:44:08,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 236 transitions, 599 flow [2022-11-16 11:44:08,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 236 transitions, 599 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:44:08,065 INFO L231 Difference]: Finished difference. Result has 210 places, 206 transitions, 445 flow [2022-11-16 11:44:08,066 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=445, PETRI_PLACES=210, PETRI_TRANSITIONS=206} [2022-11-16 11:44:08,067 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, -7 predicate places. [2022-11-16 11:44:08,068 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 206 transitions, 445 flow [2022-11-16 11:44:08,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 206.75) internal successors, (827), 4 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:08,069 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:44:08,070 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:44:08,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:44:08,071 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-16 11:44:08,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:08,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1119305790, now seen corresponding path program 2 times [2022-11-16 11:44:08,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:08,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436447744] [2022-11-16 11:44:08,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:08,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:08,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:08,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:08,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:08,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436447744] [2022-11-16 11:44:08,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436447744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:08,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:08,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:44:08,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721979904] [2022-11-16 11:44:08,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:08,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:44:08,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:08,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:44:08,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:44:08,400 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 239 [2022-11-16 11:44:08,402 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 206 transitions, 445 flow. Second operand has 4 states, 4 states have (on average 206.75) internal successors, (827), 4 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:08,402 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:44:08,402 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 239 [2022-11-16 11:44:08,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:44:08,942 INFO L130 PetriNetUnfolder]: 827/1769 cut-off events. [2022-11-16 11:44:08,942 INFO L131 PetriNetUnfolder]: For 491/492 co-relation queries the response was YES. [2022-11-16 11:44:08,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3425 conditions, 1769 events. 827/1769 cut-off events. For 491/492 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 10700 event pairs, 194 based on Foata normal form. 0/1660 useless extension candidates. Maximal degree in co-relation 3418. Up to 437 conditions per place. [2022-11-16 11:44:08,965 INFO L137 encePairwiseOnDemand]: 234/239 looper letters, 50 selfloop transitions, 7 changer transitions 0/237 dead transitions. [2022-11-16 11:44:08,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 237 transitions, 648 flow [2022-11-16 11:44:08,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:44:08,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:44:08,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1070 transitions. [2022-11-16 11:44:08,969 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.895397489539749 [2022-11-16 11:44:08,970 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1070 transitions. [2022-11-16 11:44:08,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1070 transitions. [2022-11-16 11:44:08,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:44:08,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1070 transitions. [2022-11-16 11:44:08,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 214.0) internal successors, (1070), 5 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:08,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:08,980 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:08,980 INFO L175 Difference]: Start difference. First operand has 210 places, 206 transitions, 445 flow. Second operand 5 states and 1070 transitions. [2022-11-16 11:44:08,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 237 transitions, 648 flow [2022-11-16 11:44:08,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 237 transitions, 643 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:44:08,989 INFO L231 Difference]: Finished difference. Result has 216 places, 210 transitions, 488 flow [2022-11-16 11:44:08,990 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=488, PETRI_PLACES=216, PETRI_TRANSITIONS=210} [2022-11-16 11:44:08,993 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, -1 predicate places. [2022-11-16 11:44:08,993 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 210 transitions, 488 flow [2022-11-16 11:44:08,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 206.75) internal successors, (827), 4 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:08,994 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:44:08,995 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:44:08,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:44:08,996 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-16 11:44:08,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:08,997 INFO L85 PathProgramCache]: Analyzing trace with hash -353664656, now seen corresponding path program 3 times [2022-11-16 11:44:08,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:08,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722025757] [2022-11-16 11:44:08,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:08,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:09,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:10,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:10,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:10,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722025757] [2022-11-16 11:44:10,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722025757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:10,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:10,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:44:10,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608391426] [2022-11-16 11:44:10,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:10,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:44:10,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:10,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:44:10,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:44:10,041 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 239 [2022-11-16 11:44:10,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 210 transitions, 488 flow. Second operand has 10 states, 10 states have (on average 168.6) internal successors, (1686), 10 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:10,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:44:10,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 239 [2022-11-16 11:44:10,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:44:11,406 INFO L130 PetriNetUnfolder]: 2190/4237 cut-off events. [2022-11-16 11:44:11,406 INFO L131 PetriNetUnfolder]: For 2194/2194 co-relation queries the response was YES. [2022-11-16 11:44:11,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9391 conditions, 4237 events. 2190/4237 cut-off events. For 2194/2194 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 31170 event pairs, 313 based on Foata normal form. 72/4234 useless extension candidates. Maximal degree in co-relation 9381. Up to 1072 conditions per place. [2022-11-16 11:44:11,522 INFO L137 encePairwiseOnDemand]: 230/239 looper letters, 93 selfloop transitions, 10 changer transitions 3/254 dead transitions. [2022-11-16 11:44:11,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 254 transitions, 844 flow [2022-11-16 11:44:11,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:44:11,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:44:11,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1571 transitions. [2022-11-16 11:44:11,527 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7303579730357973 [2022-11-16 11:44:11,530 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1571 transitions. [2022-11-16 11:44:11,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1571 transitions. [2022-11-16 11:44:11,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:44:11,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1571 transitions. [2022-11-16 11:44:11,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 174.55555555555554) internal successors, (1571), 9 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:11,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:11,543 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:11,543 INFO L175 Difference]: Start difference. First operand has 216 places, 210 transitions, 488 flow. Second operand 9 states and 1571 transitions. [2022-11-16 11:44:11,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 254 transitions, 844 flow [2022-11-16 11:44:11,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 254 transitions, 836 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:44:11,558 INFO L231 Difference]: Finished difference. Result has 225 places, 213 transitions, 540 flow [2022-11-16 11:44:11,558 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=540, PETRI_PLACES=225, PETRI_TRANSITIONS=213} [2022-11-16 11:44:11,560 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 8 predicate places. [2022-11-16 11:44:11,560 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 213 transitions, 540 flow [2022-11-16 11:44:11,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 168.6) internal successors, (1686), 10 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:11,562 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:44:11,562 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:44:11,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:44:11,562 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-16 11:44:11,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:11,563 INFO L85 PathProgramCache]: Analyzing trace with hash -592690519, now seen corresponding path program 1 times [2022-11-16 11:44:11,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:11,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397072919] [2022-11-16 11:44:11,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:11,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:11,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:11,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:11,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397072919] [2022-11-16 11:44:11,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397072919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:11,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:11,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:44:11,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44016850] [2022-11-16 11:44:11,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:11,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:44:11,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:11,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:44:11,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:44:11,907 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 239 [2022-11-16 11:44:11,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 213 transitions, 540 flow. Second operand has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:11,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:44:11,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 239 [2022-11-16 11:44:11,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:44:12,250 INFO L130 PetriNetUnfolder]: 362/1193 cut-off events. [2022-11-16 11:44:12,251 INFO L131 PetriNetUnfolder]: For 463/465 co-relation queries the response was YES. [2022-11-16 11:44:12,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2170 conditions, 1193 events. 362/1193 cut-off events. For 463/465 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7305 event pairs, 97 based on Foata normal form. 20/1145 useless extension candidates. Maximal degree in co-relation 2158. Up to 398 conditions per place. [2022-11-16 11:44:12,267 INFO L137 encePairwiseOnDemand]: 236/239 looper letters, 20 selfloop transitions, 2 changer transitions 1/219 dead transitions. [2022-11-16 11:44:12,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 219 transitions, 593 flow [2022-11-16 11:44:12,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:44:12,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:44:12,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 654 transitions. [2022-11-16 11:44:12,270 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9121338912133892 [2022-11-16 11:44:12,271 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 654 transitions. [2022-11-16 11:44:12,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 654 transitions. [2022-11-16 11:44:12,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:44:12,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 654 transitions. [2022-11-16 11:44:12,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:12,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:12,276 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:12,277 INFO L175 Difference]: Start difference. First operand has 225 places, 213 transitions, 540 flow. Second operand 3 states and 654 transitions. [2022-11-16 11:44:12,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 219 transitions, 593 flow [2022-11-16 11:44:12,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 219 transitions, 578 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-16 11:44:12,285 INFO L231 Difference]: Finished difference. Result has 222 places, 213 transitions, 526 flow [2022-11-16 11:44:12,286 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=526, PETRI_PLACES=222, PETRI_TRANSITIONS=213} [2022-11-16 11:44:12,287 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 5 predicate places. [2022-11-16 11:44:12,287 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 213 transitions, 526 flow [2022-11-16 11:44:12,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:12,288 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:44:12,288 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:44:12,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:44:12,289 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-16 11:44:12,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:12,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1754617501, now seen corresponding path program 1 times [2022-11-16 11:44:12,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:12,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954403117] [2022-11-16 11:44:12,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:12,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:12,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:44:12,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:12,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954403117] [2022-11-16 11:44:12,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954403117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:12,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:12,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:44:12,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221684062] [2022-11-16 11:44:12,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:12,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:44:12,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:12,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:44:12,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:44:12,601 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 239 [2022-11-16 11:44:12,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 213 transitions, 526 flow. Second operand has 6 states, 6 states have (on average 192.83333333333334) internal successors, (1157), 6 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:12,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:44:12,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 239 [2022-11-16 11:44:12,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:44:13,028 INFO L130 PetriNetUnfolder]: 393/1344 cut-off events. [2022-11-16 11:44:13,028 INFO L131 PetriNetUnfolder]: For 512/515 co-relation queries the response was YES. [2022-11-16 11:44:13,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2563 conditions, 1344 events. 393/1344 cut-off events. For 512/515 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 8150 event pairs, 165 based on Foata normal form. 13/1258 useless extension candidates. Maximal degree in co-relation 2550. Up to 445 conditions per place. [2022-11-16 11:44:13,047 INFO L137 encePairwiseOnDemand]: 231/239 looper letters, 37 selfloop transitions, 6 changer transitions 9/226 dead transitions. [2022-11-16 11:44:13,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 226 transitions, 662 flow [2022-11-16 11:44:13,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:44:13,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:44:13,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1368 transitions. [2022-11-16 11:44:13,052 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8176927674835625 [2022-11-16 11:44:13,052 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1368 transitions. [2022-11-16 11:44:13,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1368 transitions. [2022-11-16 11:44:13,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:44:13,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1368 transitions. [2022-11-16 11:44:13,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 195.42857142857142) internal successors, (1368), 7 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:13,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:13,063 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:13,063 INFO L175 Difference]: Start difference. First operand has 222 places, 213 transitions, 526 flow. Second operand 7 states and 1368 transitions. [2022-11-16 11:44:13,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 226 transitions, 662 flow [2022-11-16 11:44:13,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 226 transitions, 660 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:44:13,071 INFO L231 Difference]: Finished difference. Result has 229 places, 214 transitions, 546 flow [2022-11-16 11:44:13,072 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=546, PETRI_PLACES=229, PETRI_TRANSITIONS=214} [2022-11-16 11:44:13,074 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 12 predicate places. [2022-11-16 11:44:13,075 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 214 transitions, 546 flow [2022-11-16 11:44:13,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.83333333333334) internal successors, (1157), 6 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:13,076 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:44:13,076 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:44:13,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:44:13,076 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-16 11:44:13,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:13,077 INFO L85 PathProgramCache]: Analyzing trace with hash -418471532, now seen corresponding path program 1 times [2022-11-16 11:44:13,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:13,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896242013] [2022-11-16 11:44:13,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:13,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:13,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:44:13,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:13,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896242013] [2022-11-16 11:44:13,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896242013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:13,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:13,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:44:13,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867084691] [2022-11-16 11:44:13,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:13,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:44:13,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:13,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:44:13,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:44:13,406 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 239 [2022-11-16 11:44:13,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 214 transitions, 546 flow. Second operand has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:13,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:44:13,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 239 [2022-11-16 11:44:13,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:44:13,625 INFO L130 PetriNetUnfolder]: 208/838 cut-off events. [2022-11-16 11:44:13,625 INFO L131 PetriNetUnfolder]: For 354/356 co-relation queries the response was YES. [2022-11-16 11:44:13,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1600 conditions, 838 events. 208/838 cut-off events. For 354/356 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4259 event pairs, 77 based on Foata normal form. 6/808 useless extension candidates. Maximal degree in co-relation 1585. Up to 266 conditions per place. [2022-11-16 11:44:13,633 INFO L137 encePairwiseOnDemand]: 236/239 looper letters, 19 selfloop transitions, 2 changer transitions 2/220 dead transitions. [2022-11-16 11:44:13,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 220 transitions, 609 flow [2022-11-16 11:44:13,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:44:13,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:44:13,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 653 transitions. [2022-11-16 11:44:13,636 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9107391910739191 [2022-11-16 11:44:13,636 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 653 transitions. [2022-11-16 11:44:13,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 653 transitions. [2022-11-16 11:44:13,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:44:13,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 653 transitions. [2022-11-16 11:44:13,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:13,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:13,640 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:13,641 INFO L175 Difference]: Start difference. First operand has 229 places, 214 transitions, 546 flow. Second operand 3 states and 653 transitions. [2022-11-16 11:44:13,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 220 transitions, 609 flow [2022-11-16 11:44:13,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 220 transitions, 597 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-16 11:44:13,646 INFO L231 Difference]: Finished difference. Result has 226 places, 215 transitions, 546 flow [2022-11-16 11:44:13,647 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=546, PETRI_PLACES=226, PETRI_TRANSITIONS=215} [2022-11-16 11:44:13,648 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 9 predicate places. [2022-11-16 11:44:13,648 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 215 transitions, 546 flow [2022-11-16 11:44:13,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:13,648 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:44:13,649 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:44:13,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:44:13,649 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-16 11:44:13,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:13,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1850159082, now seen corresponding path program 1 times [2022-11-16 11:44:13,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:13,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272000319] [2022-11-16 11:44:13,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:13,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:13,912 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:44:13,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:13,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272000319] [2022-11-16 11:44:13,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272000319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:13,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:13,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:44:13,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261019962] [2022-11-16 11:44:13,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:13,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:44:13,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:13,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:44:13,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:44:13,916 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 239 [2022-11-16 11:44:13,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 215 transitions, 546 flow. Second operand has 6 states, 6 states have (on average 193.66666666666666) internal successors, (1162), 6 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:13,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:44:13,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 239 [2022-11-16 11:44:13,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:44:14,253 INFO L130 PetriNetUnfolder]: 216/949 cut-off events. [2022-11-16 11:44:14,254 INFO L131 PetriNetUnfolder]: For 436/451 co-relation queries the response was YES. [2022-11-16 11:44:14,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1872 conditions, 949 events. 216/949 cut-off events. For 436/451 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4669 event pairs, 80 based on Foata normal form. 4/899 useless extension candidates. Maximal degree in co-relation 1857. Up to 286 conditions per place. [2022-11-16 11:44:14,263 INFO L137 encePairwiseOnDemand]: 229/239 looper letters, 37 selfloop transitions, 8 changer transitions 20/239 dead transitions. [2022-11-16 11:44:14,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 239 transitions, 738 flow [2022-11-16 11:44:14,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:44:14,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:44:14,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1754 transitions. [2022-11-16 11:44:14,267 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8154346815434682 [2022-11-16 11:44:14,267 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1754 transitions. [2022-11-16 11:44:14,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1754 transitions. [2022-11-16 11:44:14,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:44:14,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1754 transitions. [2022-11-16 11:44:14,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 194.88888888888889) internal successors, (1754), 9 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:14,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:14,278 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:14,278 INFO L175 Difference]: Start difference. First operand has 226 places, 215 transitions, 546 flow. Second operand 9 states and 1754 transitions. [2022-11-16 11:44:14,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 239 transitions, 738 flow [2022-11-16 11:44:14,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 239 transitions, 736 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:44:14,284 INFO L231 Difference]: Finished difference. Result has 235 places, 216 transitions, 572 flow [2022-11-16 11:44:14,284 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=572, PETRI_PLACES=235, PETRI_TRANSITIONS=216} [2022-11-16 11:44:14,285 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 18 predicate places. [2022-11-16 11:44:14,285 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 216 transitions, 572 flow [2022-11-16 11:44:14,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 193.66666666666666) internal successors, (1162), 6 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:14,286 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:44:14,286 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:44:14,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:44:14,287 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-16 11:44:14,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:14,287 INFO L85 PathProgramCache]: Analyzing trace with hash 885624448, now seen corresponding path program 1 times [2022-11-16 11:44:14,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:14,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486772656] [2022-11-16 11:44:14,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:14,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:19,864 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:19,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:19,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486772656] [2022-11-16 11:44:19,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486772656] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:44:19,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683363918] [2022-11-16 11:44:19,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:19,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:44:19,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7772da9c-791a-40ef-8517-867cc2b7e246/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:44:19,869 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7772da9c-791a-40ef-8517-867cc2b7e246/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:44:19,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7772da9c-791a-40ef-8517-867cc2b7e246/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:44:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:20,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 100 conjunts are in the unsatisfiable core [2022-11-16 11:44:20,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:44:22,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:44:22,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 11:44:25,297 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 11:44:25,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-16 11:44:26,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 11:44:28,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:44:28,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:44:29,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:44:29,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:44:31,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 12 [2022-11-16 11:44:31,362 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:31,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:44:50,398 INFO L321 Elim1Store]: treesize reduction 27, result has 61.4 percent of original size [2022-11-16 11:44:50,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 240 treesize of output 138 [2022-11-16 11:44:50,597 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:44:50,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 118352 treesize of output 114346 [2022-11-16 11:44:51,351 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:44:51,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 113519 treesize of output 110487 [2022-11-16 11:44:51,882 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:44:51,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111042 treesize of output 86170 [2022-11-16 11:44:52,404 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:44:52,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 86082 treesize of output 73690 [2022-11-16 11:44:53,075 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:44:53,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 73602 treesize of output 67450