./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb18ae1-4b84-40b9-969c-ffe6b2e53d70/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb18ae1-4b84-40b9-969c-ffe6b2e53d70/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb18ae1-4b84-40b9-969c-ffe6b2e53d70/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb18ae1-4b84-40b9-969c-ffe6b2e53d70/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb18ae1-4b84-40b9-969c-ffe6b2e53d70/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb18ae1-4b84-40b9-969c-ffe6b2e53d70/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d6aa6ef36156b11d9501f41a7beea3c182ea6a120d3ddbfd55ede5953f5f6e32 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:56:10,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:56:10,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:56:10,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:56:10,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:56:10,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:56:10,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:56:10,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:56:10,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:56:10,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:56:10,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:56:10,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:56:10,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:56:10,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:56:10,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:56:10,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:56:10,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:56:10,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:56:10,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:56:10,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:56:10,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:56:10,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:56:10,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:56:10,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:56:10,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:56:10,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:56:10,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:56:10,619 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:56:10,620 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:56:10,621 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:56:10,621 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:56:10,622 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:56:10,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:56:10,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:56:10,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:56:10,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:56:10,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:56:10,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:56:10,628 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:56:10,629 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:56:10,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:56:10,631 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb18ae1-4b84-40b9-969c-ffe6b2e53d70/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:56:10,654 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:56:10,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:56:10,655 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:56:10,655 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:56:10,656 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:56:10,657 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:56:10,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:56:10,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:56:10,658 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:56:10,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:56:10,659 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:56:10,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:56:10,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:56:10,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:56:10,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:56:10,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:56:10,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:56:10,661 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:56:10,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:56:10,661 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:56:10,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:56:10,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:56:10,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:56:10,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:56:10,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:56:10,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:56:10,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:56:10,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:56:10,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:56:10,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:56:10,664 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:56:10,665 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:56:10,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:56:10,665 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_dfb18ae1-4b84-40b9-969c-ffe6b2e53d70/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb18ae1-4b84-40b9-969c-ffe6b2e53d70/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6aa6ef36156b11d9501f41a7beea3c182ea6a120d3ddbfd55ede5953f5f6e32 [2022-11-20 11:56:10,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:56:10,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:56:10,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:56:10,995 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:56:10,996 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:56:10,997 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb18ae1-4b84-40b9-969c-ffe6b2e53d70/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2022-11-20 11:56:14,115 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:56:14,353 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:56:14,354 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb18ae1-4b84-40b9-969c-ffe6b2e53d70/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2022-11-20 11:56:14,365 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb18ae1-4b84-40b9-969c-ffe6b2e53d70/bin/uautomizer-ug76WZFUDN/data/7b21bdb6c/7cf6c10f38164b919d1c11223e311cde/FLAG9fe156d89 [2022-11-20 11:56:14,390 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb18ae1-4b84-40b9-969c-ffe6b2e53d70/bin/uautomizer-ug76WZFUDN/data/7b21bdb6c/7cf6c10f38164b919d1c11223e311cde [2022-11-20 11:56:14,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:56:14,396 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:56:14,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:56:14,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:56:14,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:56:14,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:56:14" (1/1) ... [2022-11-20 11:56:14,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72f85526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:14, skipping insertion in model container [2022-11-20 11:56:14,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:56:14" (1/1) ... [2022-11-20 11:56:14,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:56:14,453 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:56:14,693 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb18ae1-4b84-40b9-969c-ffe6b2e53d70/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c[2781,2794] [2022-11-20 11:56:14,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:56:14,721 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:56:14,752 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb18ae1-4b84-40b9-969c-ffe6b2e53d70/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c[2781,2794] [2022-11-20 11:56:14,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:56:14,772 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:56:14,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:14 WrapperNode [2022-11-20 11:56:14,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:56:14,774 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:56:14,775 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:56:14,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:56:14,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:14" (1/1) ... [2022-11-20 11:56:14,791 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:14" (1/1) ... [2022-11-20 11:56:14,824 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 281 [2022-11-20 11:56:14,825 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:56:14,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:56:14,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:56:14,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:56:14,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:14" (1/1) ... [2022-11-20 11:56:14,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:14" (1/1) ... [2022-11-20 11:56:14,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:14" (1/1) ... [2022-11-20 11:56:14,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:14" (1/1) ... [2022-11-20 11:56:14,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:14" (1/1) ... [2022-11-20 11:56:14,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:14" (1/1) ... [2022-11-20 11:56:14,860 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:14" (1/1) ... [2022-11-20 11:56:14,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:14" (1/1) ... [2022-11-20 11:56:14,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:56:14,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:56:14,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:56:14,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:56:14,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:14" (1/1) ... [2022-11-20 11:56:14,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:56:14,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb18ae1-4b84-40b9-969c-ffe6b2e53d70/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:56:14,922 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb18ae1-4b84-40b9-969c-ffe6b2e53d70/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:56:14,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb18ae1-4b84-40b9-969c-ffe6b2e53d70/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:56:14,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:56:14,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:56:14,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:56:14,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:56:14,965 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:56:14,965 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:56:14,965 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:56:14,965 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:56:14,965 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 11:56:14,966 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 11:56:14,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:56:14,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:56:14,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:56:14,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:56:14,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:56:14,976 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:56:15,112 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:56:15,114 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:56:15,930 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:56:15,944 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:56:15,945 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-20 11:56:15,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:56:15 BoogieIcfgContainer [2022-11-20 11:56:15,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:56:15,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:56:15,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:56:15,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:56:15,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:56:14" (1/3) ... [2022-11-20 11:56:15,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad8d138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:56:15, skipping insertion in model container [2022-11-20 11:56:15,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:14" (2/3) ... [2022-11-20 11:56:15,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad8d138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:56:15, skipping insertion in model container [2022-11-20 11:56:15,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:56:15" (3/3) ... [2022-11-20 11:56:15,961 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-subst.wvr.c [2022-11-20 11:56:15,973 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:56:15,985 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:56:15,985 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:56:15,985 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:56:16,163 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 11:56:16,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 339 places, 358 transitions, 740 flow [2022-11-20 11:56:16,433 INFO L130 PetriNetUnfolder]: 29/355 cut-off events. [2022-11-20 11:56:16,433 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 11:56:16,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 355 events. 29/355 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 582 event pairs, 0 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 269. Up to 3 conditions per place. [2022-11-20 11:56:16,446 INFO L82 GeneralOperation]: Start removeDead. Operand has 339 places, 358 transitions, 740 flow [2022-11-20 11:56:16,463 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 325 places, 344 transitions, 706 flow [2022-11-20 11:56:16,474 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:56:16,484 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;@3e76becf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:56:16,485 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-20 11:56:16,591 INFO L130 PetriNetUnfolder]: 29/343 cut-off events. [2022-11-20 11:56:16,591 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 11:56:16,591 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:56:16,592 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] [2022-11-20 11:56:16,593 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 1 more)] === [2022-11-20 11:56:16,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:56:16,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1964627151, now seen corresponding path program 1 times [2022-11-20 11:56:16,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:56:16,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598034516] [2022-11-20 11:56:16,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:56:16,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:56:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:17,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:56:17,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:56:17,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598034516] [2022-11-20 11:56:17,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598034516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:56:17,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:56:17,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:56:17,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394588060] [2022-11-20 11:56:17,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:56:17,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:56:17,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:56:17,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:56:17,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:56:17,092 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 358 [2022-11-20 11:56:17,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 344 transitions, 706 flow. Second operand has 2 states, 2 states have (on average 337.0) internal successors, (674), 2 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:56:17,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:56:17,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 358 [2022-11-20 11:56:17,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:56:17,237 INFO L130 PetriNetUnfolder]: 9/324 cut-off events. [2022-11-20 11:56:17,238 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-11-20 11:56:17,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 324 events. 9/324 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 567 event pairs, 0 based on Foata normal form. 26/327 useless extension candidates. Maximal degree in co-relation 256. Up to 7 conditions per place. [2022-11-20 11:56:17,246 INFO L137 encePairwiseOnDemand]: 338/358 looper letters, 6 selfloop transitions, 0 changer transitions 8/324 dead transitions. [2022-11-20 11:56:17,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 324 transitions, 678 flow [2022-11-20 11:56:17,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:56:17,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 11:56:17,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 688 transitions. [2022-11-20 11:56:17,272 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9608938547486033 [2022-11-20 11:56:17,273 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 688 transitions. [2022-11-20 11:56:17,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 688 transitions. [2022-11-20 11:56:17,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:56:17,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 688 transitions. [2022-11-20 11:56:17,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 344.0) internal successors, (688), 2 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:56:17,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 358.0) internal successors, (1074), 3 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:56:17,300 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 358.0) internal successors, (1074), 3 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:56:17,302 INFO L175 Difference]: Start difference. First operand has 325 places, 344 transitions, 706 flow. Second operand 2 states and 688 transitions. [2022-11-20 11:56:17,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 324 transitions, 678 flow [2022-11-20 11:56:17,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 324 transitions, 666 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 11:56:17,320 INFO L231 Difference]: Finished difference. Result has 320 places, 316 transitions, 638 flow [2022-11-20 11:56:17,322 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=638, PETRI_PLACES=320, PETRI_TRANSITIONS=316} [2022-11-20 11:56:17,329 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, -5 predicate places. [2022-11-20 11:56:17,329 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 316 transitions, 638 flow [2022-11-20 11:56:17,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 337.0) internal successors, (674), 2 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:56:17,331 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:56:17,331 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] [2022-11-20 11:56:17,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:56:17,332 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 1 more)] === [2022-11-20 11:56:17,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:56:17,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1305423389, now seen corresponding path program 1 times [2022-11-20 11:56:17,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:56:17,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394086820] [2022-11-20 11:56:17,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:56:17,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:56:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:20,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:56:20,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:56:20,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394086820] [2022-11-20 11:56:20,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394086820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:56:20,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:56:20,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-20 11:56:20,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808146894] [2022-11-20 11:56:20,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:56:20,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 11:56:20,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:56:20,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 11:56:20,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2022-11-20 11:56:20,609 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 358 [2022-11-20 11:56:20,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 316 transitions, 638 flow. Second operand has 28 states, 28 states have (on average 242.53571428571428) internal successors, (6791), 28 states have internal predecessors, (6791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:56:20,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:56:20,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 358 [2022-11-20 11:56:20,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:56:26,991 INFO L130 PetriNetUnfolder]: 1774/13195 cut-off events. [2022-11-20 11:56:26,991 INFO L131 PetriNetUnfolder]: For 189/221 co-relation queries the response was YES. [2022-11-20 11:56:27,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15713 conditions, 13195 events. 1774/13195 cut-off events. For 189/221 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 162713 event pairs, 970 based on Foata normal form. 1/11689 useless extension candidates. Maximal degree in co-relation 15710. Up to 500 conditions per place. [2022-11-20 11:56:27,124 INFO L137 encePairwiseOnDemand]: 319/358 looper letters, 250 selfloop transitions, 40 changer transitions 8/525 dead transitions. [2022-11-20 11:56:27,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 525 transitions, 1682 flow [2022-11-20 11:56:27,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:56:27,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 11:56:27,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 8699 transitions. [2022-11-20 11:56:27,144 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6942537909018356 [2022-11-20 11:56:27,145 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 8699 transitions. [2022-11-20 11:56:27,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 8699 transitions. [2022-11-20 11:56:27,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:56:27,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 8699 transitions. [2022-11-20 11:56:27,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 248.54285714285714) internal successors, (8699), 35 states have internal predecessors, (8699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:56:27,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 358.0) internal successors, (12888), 36 states have internal predecessors, (12888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:56:27,204 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 358.0) internal successors, (12888), 36 states have internal predecessors, (12888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:56:27,204 INFO L175 Difference]: Start difference. First operand has 320 places, 316 transitions, 638 flow. Second operand 35 states and 8699 transitions. [2022-11-20 11:56:27,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 525 transitions, 1682 flow [2022-11-20 11:56:27,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 525 transitions, 1682 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:56:27,218 INFO L231 Difference]: Finished difference. Result has 368 places, 347 transitions, 897 flow [2022-11-20 11:56:27,219 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=897, PETRI_PLACES=368, PETRI_TRANSITIONS=347} [2022-11-20 11:56:27,220 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 43 predicate places. [2022-11-20 11:56:27,220 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 347 transitions, 897 flow [2022-11-20 11:56:27,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 242.53571428571428) internal successors, (6791), 28 states have internal predecessors, (6791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:56:27,224 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:56:27,224 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] [2022-11-20 11:56:27,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:56:27,225 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 1 more)] === [2022-11-20 11:56:27,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:56:27,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1445626541, now seen corresponding path program 2 times [2022-11-20 11:56:27,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:56:27,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671196730] [2022-11-20 11:56:27,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:56:27,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:56:27,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:28,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:56:28,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:56:28,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671196730] [2022-11-20 11:56:28,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671196730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:56:28,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:56:28,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:56:28,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043038942] [2022-11-20 11:56:28,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:56:28,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:56:28,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:56:28,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:56:28,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:56:28,538 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 358 [2022-11-20 11:56:28,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 347 transitions, 897 flow. Second operand has 19 states, 19 states have (on average 243.73684210526315) internal successors, (4631), 19 states have internal predecessors, (4631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:56:28,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:56:28,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 358 [2022-11-20 11:56:28,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:56:34,910 INFO L130 PetriNetUnfolder]: 3209/23446 cut-off events. [2022-11-20 11:56:34,911 INFO L131 PetriNetUnfolder]: For 4004/5031 co-relation queries the response was YES. [2022-11-20 11:56:35,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30748 conditions, 23446 events. 3209/23446 cut-off events. For 4004/5031 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 322408 event pairs, 1293 based on Foata normal form. 30/20675 useless extension candidates. Maximal degree in co-relation 30722. Up to 1422 conditions per place. [2022-11-20 11:56:35,243 INFO L137 encePairwiseOnDemand]: 332/358 looper letters, 162 selfloop transitions, 46 changer transitions 8/443 dead transitions. [2022-11-20 11:56:35,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 443 transitions, 1658 flow [2022-11-20 11:56:35,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 11:56:35,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-20 11:56:35,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5462 transitions. [2022-11-20 11:56:35,256 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6934992381919757 [2022-11-20 11:56:35,256 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5462 transitions. [2022-11-20 11:56:35,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5462 transitions. [2022-11-20 11:56:35,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:56:35,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5462 transitions. [2022-11-20 11:56:35,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 248.27272727272728) internal successors, (5462), 22 states have internal predecessors, (5462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:56:35,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 358.0) internal successors, (8234), 23 states have internal predecessors, (8234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:56:35,408 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 358.0) internal successors, (8234), 23 states have internal predecessors, (8234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:56:35,408 INFO L175 Difference]: Start difference. First operand has 368 places, 347 transitions, 897 flow. Second operand 22 states and 5462 transitions. [2022-11-20 11:56:35,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 443 transitions, 1658 flow [2022-11-20 11:56:35,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 443 transitions, 1601 flow, removed 24 selfloop flow, removed 9 redundant places. [2022-11-20 11:56:35,431 INFO L231 Difference]: Finished difference. Result has 385 places, 362 transitions, 1132 flow [2022-11-20 11:56:35,432 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1132, PETRI_PLACES=385, PETRI_TRANSITIONS=362} [2022-11-20 11:56:35,433 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 60 predicate places. [2022-11-20 11:56:35,433 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 362 transitions, 1132 flow [2022-11-20 11:56:35,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 243.73684210526315) internal successors, (4631), 19 states have internal predecessors, (4631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:56:35,435 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:56:35,436 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] [2022-11-20 11:56:35,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:56:35,436 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 1 more)] === [2022-11-20 11:56:35,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:56:35,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1678382041, now seen corresponding path program 3 times [2022-11-20 11:56:35,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:56:35,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266129909] [2022-11-20 11:56:35,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:56:35,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:56:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:37,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:56:37,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:56:37,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266129909] [2022-11-20 11:56:37,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266129909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:56:37,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:56:37,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-20 11:56:37,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176100397] [2022-11-20 11:56:37,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:56:37,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 11:56:37,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:56:37,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 11:56:37,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2022-11-20 11:56:37,442 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 358 [2022-11-20 11:56:37,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 362 transitions, 1132 flow. Second operand has 28 states, 28 states have (on average 242.53571428571428) internal successors, (6791), 28 states have internal predecessors, (6791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:56:37,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:56:37,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 358 [2022-11-20 11:56:37,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:56:45,214 INFO L130 PetriNetUnfolder]: 3266/24610 cut-off events. [2022-11-20 11:56:45,215 INFO L131 PetriNetUnfolder]: For 10895/13169 co-relation queries the response was YES. [2022-11-20 11:56:45,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34383 conditions, 24610 events. 3266/24610 cut-off events. For 10895/13169 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 341854 event pairs, 1765 based on Foata normal form. 54/21768 useless extension candidates. Maximal degree in co-relation 34351. Up to 1344 conditions per place. [2022-11-20 11:56:45,561 INFO L137 encePairwiseOnDemand]: 319/358 looper letters, 279 selfloop transitions, 45 changer transitions 8/559 dead transitions. [2022-11-20 11:56:45,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 559 transitions, 2581 flow [2022-11-20 11:56:45,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:56:45,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 11:56:45,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 8698 transitions. [2022-11-20 11:56:45,584 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6941739824421389 [2022-11-20 11:56:45,585 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 8698 transitions. [2022-11-20 11:56:45,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 8698 transitions. [2022-11-20 11:56:45,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:56:45,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 8698 transitions. [2022-11-20 11:56:45,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 248.5142857142857) internal successors, (8698), 35 states have internal predecessors, (8698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:56:45,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 358.0) internal successors, (12888), 36 states have internal predecessors, (12888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:56:45,644 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 358.0) internal successors, (12888), 36 states have internal predecessors, (12888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:56:45,644 INFO L175 Difference]: Start difference. First operand has 385 places, 362 transitions, 1132 flow. Second operand 35 states and 8698 transitions. [2022-11-20 11:56:45,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 559 transitions, 2581 flow [2022-11-20 11:56:45,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 559 transitions, 2436 flow, removed 52 selfloop flow, removed 15 redundant places. [2022-11-20 11:56:45,686 INFO L231 Difference]: Finished difference. Result has 408 places, 371 transitions, 1293 flow [2022-11-20 11:56:45,687 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1293, PETRI_PLACES=408, PETRI_TRANSITIONS=371} [2022-11-20 11:56:45,688 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 83 predicate places. [2022-11-20 11:56:45,693 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 371 transitions, 1293 flow [2022-11-20 11:56:45,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 242.53571428571428) internal successors, (6791), 28 states have internal predecessors, (6791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:56:45,696 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:56:45,697 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] [2022-11-20 11:56:45,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:56:45,697 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 1 more)] === [2022-11-20 11:56:45,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:56:45,698 INFO L85 PathProgramCache]: Analyzing trace with hash 23934303, now seen corresponding path program 4 times [2022-11-20 11:56:45,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:56:45,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356576778] [2022-11-20 11:56:45,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:56:45,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:56:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:47,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:56:47,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:56:47,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356576778] [2022-11-20 11:56:47,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356576778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:56:47,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:56:47,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-11-20 11:56:47,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258575189] [2022-11-20 11:56:47,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:56:47,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 11:56:47,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:56:47,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 11:56:47,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2022-11-20 11:56:47,859 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 358 [2022-11-20 11:56:47,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 371 transitions, 1293 flow. Second operand has 29 states, 29 states have (on average 242.44827586206895) internal successors, (7031), 29 states have internal predecessors, (7031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:56:47,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:56:47,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 358 [2022-11-20 11:56:47,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:56:55,746 INFO L130 PetriNetUnfolder]: 3253/24749 cut-off events. [2022-11-20 11:56:55,746 INFO L131 PetriNetUnfolder]: For 16730/19124 co-relation queries the response was YES. [2022-11-20 11:56:55,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35815 conditions, 24749 events. 3253/24749 cut-off events. For 16730/19124 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 343412 event pairs, 1776 based on Foata normal form. 84/21930 useless extension candidates. Maximal degree in co-relation 35779. Up to 1344 conditions per place. [2022-11-20 11:56:56,076 INFO L137 encePairwiseOnDemand]: 319/358 looper letters, 282 selfloop transitions, 49 changer transitions 8/566 dead transitions. [2022-11-20 11:56:56,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 566 transitions, 2801 flow [2022-11-20 11:56:56,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:56:56,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 11:56:56,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 8696 transitions. [2022-11-20 11:56:56,094 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6940143655227454 [2022-11-20 11:56:56,095 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 8696 transitions. [2022-11-20 11:56:56,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 8696 transitions. [2022-11-20 11:56:56,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:56:56,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 8696 transitions. [2022-11-20 11:56:56,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 248.45714285714286) internal successors, (8696), 35 states have internal predecessors, (8696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:56:56,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 358.0) internal successors, (12888), 36 states have internal predecessors, (12888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:56:56,141 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 358.0) internal successors, (12888), 36 states have internal predecessors, (12888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:56:56,141 INFO L175 Difference]: Start difference. First operand has 408 places, 371 transitions, 1293 flow. Second operand 35 states and 8696 transitions. [2022-11-20 11:56:56,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 566 transitions, 2801 flow [2022-11-20 11:56:56,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 566 transitions, 2658 flow, removed 41 selfloop flow, removed 30 redundant places. [2022-11-20 11:56:56,184 INFO L231 Difference]: Finished difference. Result has 416 places, 385 transitions, 1527 flow [2022-11-20 11:56:56,185 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=1210, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1527, PETRI_PLACES=416, PETRI_TRANSITIONS=385} [2022-11-20 11:56:56,189 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 91 predicate places. [2022-11-20 11:56:56,189 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 385 transitions, 1527 flow [2022-11-20 11:56:56,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 242.44827586206895) internal successors, (7031), 29 states have internal predecessors, (7031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:56:56,192 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:56:56,192 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] [2022-11-20 11:56:56,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:56:56,193 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 1 more)] === [2022-11-20 11:56:56,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:56:56,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1989396783, now seen corresponding path program 5 times [2022-11-20 11:56:56,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:56:56,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857641902] [2022-11-20 11:56:56,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:56:56,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:56:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:58,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:56:58,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:56:58,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857641902] [2022-11-20 11:56:58,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857641902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:56:58,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:56:58,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-11-20 11:56:58,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227723885] [2022-11-20 11:56:58,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:56:58,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 11:56:58,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:56:58,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 11:56:58,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2022-11-20 11:56:58,062 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 358 [2022-11-20 11:56:58,067 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 385 transitions, 1527 flow. Second operand has 25 states, 25 states have (on average 242.84) internal successors, (6071), 25 states have internal predecessors, (6071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:56:58,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:56:58,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 358 [2022-11-20 11:56:58,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:57:09,182 INFO L130 PetriNetUnfolder]: 3622/27738 cut-off events. [2022-11-20 11:57:09,183 INFO L131 PetriNetUnfolder]: For 26884/29227 co-relation queries the response was YES. [2022-11-20 11:57:09,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41903 conditions, 27738 events. 3622/27738 cut-off events. For 26884/29227 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 393404 event pairs, 1380 based on Foata normal form. 142/24551 useless extension candidates. Maximal degree in co-relation 41863. Up to 1344 conditions per place. [2022-11-20 11:57:09,582 INFO L137 encePairwiseOnDemand]: 319/358 looper letters, 340 selfloop transitions, 80 changer transitions 16/663 dead transitions. [2022-11-20 11:57:09,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 663 transitions, 3739 flow [2022-11-20 11:57:09,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-20 11:57:09,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-20 11:57:09,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 12135 transitions. [2022-11-20 11:57:09,601 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6917683274427089 [2022-11-20 11:57:09,601 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 12135 transitions. [2022-11-20 11:57:09,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 12135 transitions. [2022-11-20 11:57:09,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:57:09,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 12135 transitions. [2022-11-20 11:57:09,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 247.6530612244898) internal successors, (12135), 49 states have internal predecessors, (12135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:09,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 358.0) internal successors, (17900), 50 states have internal predecessors, (17900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:09,653 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 358.0) internal successors, (17900), 50 states have internal predecessors, (17900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:09,654 INFO L175 Difference]: Start difference. First operand has 416 places, 385 transitions, 1527 flow. Second operand 49 states and 12135 transitions. [2022-11-20 11:57:09,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 663 transitions, 3739 flow [2022-11-20 11:57:09,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 663 transitions, 3566 flow, removed 56 selfloop flow, removed 30 redundant places. [2022-11-20 11:57:09,732 INFO L231 Difference]: Finished difference. Result has 449 places, 421 transitions, 2140 flow [2022-11-20 11:57:09,733 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=1444, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=2140, PETRI_PLACES=449, PETRI_TRANSITIONS=421} [2022-11-20 11:57:09,736 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 124 predicate places. [2022-11-20 11:57:09,736 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 421 transitions, 2140 flow [2022-11-20 11:57:09,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 242.84) internal successors, (6071), 25 states have internal predecessors, (6071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:09,739 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:57:09,739 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] [2022-11-20 11:57:09,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:57:09,739 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 1 more)] === [2022-11-20 11:57:09,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:09,740 INFO L85 PathProgramCache]: Analyzing trace with hash 686985547, now seen corresponding path program 6 times [2022-11-20 11:57:09,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:09,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337686500] [2022-11-20 11:57:09,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:09,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:09,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:12,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:12,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:12,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337686500] [2022-11-20 11:57:12,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337686500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:12,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:12,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-11-20 11:57:12,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821746859] [2022-11-20 11:57:12,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:12,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-20 11:57:12,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:12,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-20 11:57:12,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=786, Unknown=0, NotChecked=0, Total=870 [2022-11-20 11:57:12,183 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 358 [2022-11-20 11:57:12,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 421 transitions, 2140 flow. Second operand has 30 states, 30 states have (on average 239.46666666666667) internal successors, (7184), 30 states have internal predecessors, (7184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:12,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:57:12,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 358 [2022-11-20 11:57:12,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:57:21,711 INFO L130 PetriNetUnfolder]: 3635/28553 cut-off events. [2022-11-20 11:57:21,712 INFO L131 PetriNetUnfolder]: For 42531/46491 co-relation queries the response was YES. [2022-11-20 11:57:22,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45523 conditions, 28553 events. 3635/28553 cut-off events. For 42531/46491 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 408136 event pairs, 1861 based on Foata normal form. 169/25353 useless extension candidates. Maximal degree in co-relation 45468. Up to 1814 conditions per place. [2022-11-20 11:57:22,216 INFO L137 encePairwiseOnDemand]: 320/358 looper letters, 306 selfloop transitions, 55 changer transitions 8/593 dead transitions. [2022-11-20 11:57:22,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 593 transitions, 3684 flow [2022-11-20 11:57:22,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 11:57:22,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 11:57:22,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 8594 transitions. [2022-11-20 11:57:22,236 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6858739026336792 [2022-11-20 11:57:22,237 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 8594 transitions. [2022-11-20 11:57:22,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 8594 transitions. [2022-11-20 11:57:22,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:57:22,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 8594 transitions. [2022-11-20 11:57:22,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 245.54285714285714) internal successors, (8594), 35 states have internal predecessors, (8594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:22,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 358.0) internal successors, (12888), 36 states have internal predecessors, (12888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:22,289 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 358.0) internal successors, (12888), 36 states have internal predecessors, (12888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:22,289 INFO L175 Difference]: Start difference. First operand has 449 places, 421 transitions, 2140 flow. Second operand 35 states and 8594 transitions. [2022-11-20 11:57:22,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 593 transitions, 3684 flow [2022-11-20 11:57:22,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 593 transitions, 3360 flow, removed 126 selfloop flow, removed 33 redundant places. [2022-11-20 11:57:22,465 INFO L231 Difference]: Finished difference. Result has 448 places, 426 transitions, 2161 flow [2022-11-20 11:57:22,466 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=1935, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2161, PETRI_PLACES=448, PETRI_TRANSITIONS=426} [2022-11-20 11:57:22,466 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 123 predicate places. [2022-11-20 11:57:22,467 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 426 transitions, 2161 flow [2022-11-20 11:57:22,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 239.46666666666667) internal successors, (7184), 30 states have internal predecessors, (7184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:22,469 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:57:22,470 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] [2022-11-20 11:57:22,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:57:22,470 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 1 more)] === [2022-11-20 11:57:22,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:22,471 INFO L85 PathProgramCache]: Analyzing trace with hash -363984271, now seen corresponding path program 1 times [2022-11-20 11:57:22,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:22,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434940899] [2022-11-20 11:57:22,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:22,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:22,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:22,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:22,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434940899] [2022-11-20 11:57:22,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434940899] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:57:22,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794697952] [2022-11-20 11:57:22,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:22,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:57:22,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb18ae1-4b84-40b9-969c-ffe6b2e53d70/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:57:22,947 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb18ae1-4b84-40b9-969c-ffe6b2e53d70/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:57:22,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb18ae1-4b84-40b9-969c-ffe6b2e53d70/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:57:23,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:23,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 11:57:23,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:57:23,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:23,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:57:24,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:24,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794697952] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:57:24,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:57:24,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14, 13] total 26 [2022-11-20 11:57:24,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479084482] [2022-11-20 11:57:24,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:24,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:57:24,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:24,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:57:24,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2022-11-20 11:57:24,501 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 358 [2022-11-20 11:57:24,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 426 transitions, 2161 flow. Second operand has 13 states, 13 states have (on average 251.46153846153845) internal successors, (3269), 13 states have internal predecessors, (3269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:24,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:57:24,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 358 [2022-11-20 11:57:24,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:57:32,501 INFO L130 PetriNetUnfolder]: 3999/33173 cut-off events. [2022-11-20 11:57:32,502 INFO L131 PetriNetUnfolder]: For 39343/42061 co-relation queries the response was YES. [2022-11-20 11:57:32,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50666 conditions, 33173 events. 3999/33173 cut-off events. For 39343/42061 co-relation queries the response was YES. Maximal size of possible extension queue 755. Compared 492590 event pairs, 2332 based on Foata normal form. 84/29512 useless extension candidates. Maximal degree in co-relation 50612. Up to 2980 conditions per place. [2022-11-20 11:57:33,078 INFO L137 encePairwiseOnDemand]: 336/358 looper letters, 229 selfloop transitions, 41 changer transitions 4/546 dead transitions. [2022-11-20 11:57:33,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 546 transitions, 3285 flow [2022-11-20 11:57:33,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:57:33,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 11:57:33,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4632 transitions. [2022-11-20 11:57:33,086 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7188081936685289 [2022-11-20 11:57:33,086 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4632 transitions. [2022-11-20 11:57:33,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4632 transitions. [2022-11-20 11:57:33,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:57:33,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4632 transitions. [2022-11-20 11:57:33,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 257.3333333333333) internal successors, (4632), 18 states have internal predecessors, (4632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:33,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 358.0) internal successors, (6802), 19 states have internal predecessors, (6802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:33,108 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 358.0) internal successors, (6802), 19 states have internal predecessors, (6802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:33,108 INFO L175 Difference]: Start difference. First operand has 448 places, 426 transitions, 2161 flow. Second operand 18 states and 4632 transitions. [2022-11-20 11:57:33,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 546 transitions, 3285 flow [2022-11-20 11:57:33,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 546 transitions, 3160 flow, removed 25 selfloop flow, removed 30 redundant places. [2022-11-20 11:57:33,279 INFO L231 Difference]: Finished difference. Result has 438 places, 447 transitions, 2345 flow [2022-11-20 11:57:33,280 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=2058, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2345, PETRI_PLACES=438, PETRI_TRANSITIONS=447} [2022-11-20 11:57:33,282 INFO L288 CegarLoopForPetriNet]: 325 programPoint places, 113 predicate places. [2022-11-20 11:57:33,283 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 447 transitions, 2345 flow [2022-11-20 11:57:33,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 251.46153846153845) internal successors, (3269), 13 states have internal predecessors, (3269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:33,284 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:57:33,289 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] [2022-11-20 11:57:33,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb18ae1-4b84-40b9-969c-ffe6b2e53d70/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:57:33,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb18ae1-4b84-40b9-969c-ffe6b2e53d70/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:57:33,496 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 1 more)] === [2022-11-20 11:57:33,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:33,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1989928310, now seen corresponding path program 1 times [2022-11-20 11:57:33,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:33,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273290597] [2022-11-20 11:57:33,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:33,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:33,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:34,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:34,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:34,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273290597] [2022-11-20 11:57:34,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273290597] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:57:34,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014541481] [2022-11-20 11:57:34,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:34,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:57:34,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb18ae1-4b84-40b9-969c-ffe6b2e53d70/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:57:34,149 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb18ae1-4b84-40b9-969c-ffe6b2e53d70/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:57:34,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb18ae1-4b84-40b9-969c-ffe6b2e53d70/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:57:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:34,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 11:57:34,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:57:34,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:34,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:57:35,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:35,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014541481] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:57:35,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:57:35,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14, 13] total 26 [2022-11-20 11:57:35,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240313995] [2022-11-20 11:57:35,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:35,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:57:35,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:35,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:57:35,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2022-11-20 11:57:35,385 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 358 [2022-11-20 11:57:35,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 447 transitions, 2345 flow. Second operand has 13 states, 13 states have (on average 251.46153846153845) internal successors, (3269), 13 states have internal predecessors, (3269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:35,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:57:35,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 358 [2022-11-20 11:57:35,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand