./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-symm.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_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/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_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/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_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/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 c7fdb1595c27c144c3bf111946260cb3946663200a2d53f7fba5455031291c4f --- 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 11:25:13,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:25:13,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:25:13,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:25:13,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:25:13,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:25:13,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:25:13,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:25:13,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:25:13,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:25:13,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:25:13,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:25:13,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:25:13,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:25:13,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:25:13,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:25:13,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:25:13,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:25:13,631 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:25:13,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:25:13,642 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:25:13,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:25:13,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:25:13,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:25:13,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:25:13,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:25:13,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:25:13,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:25:13,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:25:13,666 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:25:13,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:25:13,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:25:13,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:25:13,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:25:13,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:25:13,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:25:13,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:25:13,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:25:13,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:25:13,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:25:13,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:25:13,679 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:25:13,724 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:25:13,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:25:13,726 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:25:13,726 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:25:13,727 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:25:13,727 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:25:13,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:25:13,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:25:13,730 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:25:13,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:25:13,731 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:25:13,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:25:13,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:25:13,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:25:13,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:25:13,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:25:13,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:25:13,733 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:25:13,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:25:13,733 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:25:13,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:25:13,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:25:13,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:25:13,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:25:13,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:25:13,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:25:13,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:25:13,736 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:25:13,736 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:25:13,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:25:13,736 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:25:13,737 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:25:13,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:25:13,737 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_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7fdb1595c27c144c3bf111946260cb3946663200a2d53f7fba5455031291c4f [2022-11-20 11:25:14,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:25:14,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:25:14,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:25:14,097 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:25:14,098 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:25:14,100 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2022-11-20 11:25:17,399 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:25:17,648 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:25:17,649 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2022-11-20 11:25:17,658 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/bin/uautomizer-ug76WZFUDN/data/94d85cfa4/11dcd263ae1345cc8244d6d6acc7ad21/FLAG4c3d6a2e7 [2022-11-20 11:25:17,676 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/bin/uautomizer-ug76WZFUDN/data/94d85cfa4/11dcd263ae1345cc8244d6d6acc7ad21 [2022-11-20 11:25:17,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:25:17,682 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:25:17,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:25:17,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:25:17,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:25:17,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:25:17" (1/1) ... [2022-11-20 11:25:17,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f2137ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:17, skipping insertion in model container [2022-11-20 11:25:17,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:25:17" (1/1) ... [2022-11-20 11:25:17,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:25:17,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:25:17,927 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_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c[2695,2708] [2022-11-20 11:25:17,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:25:17,950 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:25:17,974 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_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c[2695,2708] [2022-11-20 11:25:17,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:25:17,996 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:25:17,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:17 WrapperNode [2022-11-20 11:25:17,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:25:17,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:25:17,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:25:17,998 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:25:18,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:17" (1/1) ... [2022-11-20 11:25:18,018 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:17" (1/1) ... [2022-11-20 11:25:18,053 INFO L138 Inliner]: procedures = 25, calls = 37, calls flagged for inlining = 15, calls inlined = 19, statements flattened = 194 [2022-11-20 11:25:18,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:25:18,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:25:18,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:25:18,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:25:18,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:17" (1/1) ... [2022-11-20 11:25:18,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:17" (1/1) ... [2022-11-20 11:25:18,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:17" (1/1) ... [2022-11-20 11:25:18,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:17" (1/1) ... [2022-11-20 11:25:18,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:17" (1/1) ... [2022-11-20 11:25:18,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:17" (1/1) ... [2022-11-20 11:25:18,089 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:17" (1/1) ... [2022-11-20 11:25:18,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:17" (1/1) ... [2022-11-20 11:25:18,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:25:18,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:25:18,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:25:18,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:25:18,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:17" (1/1) ... [2022-11-20 11:25:18,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:25:18,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:18,140 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:25:18,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:25:18,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:25:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:25:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:25:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:25:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:25:18,200 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:25:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:25:18,200 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:25:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:25:18,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:25:18,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:25:18,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:25:18,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:25:18,203 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 11:25:18,378 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:25:18,381 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:25:18,923 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:25:18,970 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:25:18,970 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 11:25:18,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:25:18 BoogieIcfgContainer [2022-11-20 11:25:18,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:25:18,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:25:18,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:25:18,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:25:18,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:25:17" (1/3) ... [2022-11-20 11:25:18,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aad8f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:25:18, skipping insertion in model container [2022-11-20 11:25:19,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:17" (2/3) ... [2022-11-20 11:25:19,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aad8f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:25:19, skipping insertion in model container [2022-11-20 11:25:19,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:25:18" (3/3) ... [2022-11-20 11:25:19,002 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-symm.wvr.c [2022-11-20 11:25:19,013 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:25:19,028 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:25:19,028 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:25:19,028 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:25:19,159 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 11:25:19,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 262 transitions, 540 flow [2022-11-20 11:25:19,356 INFO L130 PetriNetUnfolder]: 21/260 cut-off events. [2022-11-20 11:25:19,357 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:25:19,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 260 events. 21/260 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 294 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 166. Up to 2 conditions per place. [2022-11-20 11:25:19,377 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 262 transitions, 540 flow [2022-11-20 11:25:19,385 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 237 places, 251 transitions, 514 flow [2022-11-20 11:25:19,404 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:25:19,411 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;@6251959, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:25:19,412 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-20 11:25:19,518 INFO L130 PetriNetUnfolder]: 21/250 cut-off events. [2022-11-20 11:25:19,519 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:25:19,519 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:19,520 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] [2022-11-20 11:25:19,520 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:25:19,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:19,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1555206838, now seen corresponding path program 1 times [2022-11-20 11:25:19,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:19,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848470867] [2022-11-20 11:25:19,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:19,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:19,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:19,903 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 11:25:19,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:19,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848470867] [2022-11-20 11:25:19,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848470867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:19,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:19,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:25:19,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232344919] [2022-11-20 11:25:19,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:19,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:25:19,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:19,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:25:19,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:25:19,979 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 262 [2022-11-20 11:25:19,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 251 transitions, 514 flow. Second operand has 2 states, 2 states have (on average 244.0) internal successors, (488), 2 states have internal predecessors, (488), 0 states have call successors, (0), 0 states 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 11:25:19,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:19,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 262 [2022-11-20 11:25:19,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:20,068 INFO L130 PetriNetUnfolder]: 4/234 cut-off events. [2022-11-20 11:25:20,069 INFO L131 PetriNetUnfolder]: For 8/9 co-relation queries the response was YES. [2022-11-20 11:25:20,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 234 events. 4/234 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 276 event pairs, 0 based on Foata normal form. 20/237 useless extension candidates. Maximal degree in co-relation 157. Up to 5 conditions per place. [2022-11-20 11:25:20,073 INFO L137 encePairwiseOnDemand]: 245/262 looper letters, 4 selfloop transitions, 0 changer transitions 7/234 dead transitions. [2022-11-20 11:25:20,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 234 transitions, 488 flow [2022-11-20 11:25:20,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:25:20,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 11:25:20,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 501 transitions. [2022-11-20 11:25:20,093 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9561068702290076 [2022-11-20 11:25:20,094 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 501 transitions. [2022-11-20 11:25:20,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 501 transitions. [2022-11-20 11:25:20,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:20,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 501 transitions. [2022-11-20 11:25:20,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 250.5) internal successors, (501), 2 states have internal predecessors, (501), 0 states have call successors, (0), 0 states 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 11:25:20,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states 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 11:25:20,116 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states 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 11:25:20,118 INFO L175 Difference]: Start difference. First operand has 237 places, 251 transitions, 514 flow. Second operand 2 states and 501 transitions. [2022-11-20 11:25:20,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 234 transitions, 488 flow [2022-11-20 11:25:20,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 234 transitions, 480 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:25:20,132 INFO L231 Difference]: Finished difference. Result has 234 places, 227 transitions, 458 flow [2022-11-20 11:25:20,134 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=458, PETRI_PLACES=234, PETRI_TRANSITIONS=227} [2022-11-20 11:25:20,141 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, -3 predicate places. [2022-11-20 11:25:20,142 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 227 transitions, 458 flow [2022-11-20 11:25:20,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 244.0) internal successors, (488), 2 states have internal predecessors, (488), 0 states have call successors, (0), 0 states 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 11:25:20,143 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:20,144 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] [2022-11-20 11:25:20,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:25:20,145 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:25:20,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:20,147 INFO L85 PathProgramCache]: Analyzing trace with hash 155673706, now seen corresponding path program 1 times [2022-11-20 11:25:20,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:20,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164805125] [2022-11-20 11:25:20,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:20,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:20,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:20,768 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 11:25:20,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:20,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164805125] [2022-11-20 11:25:20,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164805125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:20,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:20,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:25:20,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162092292] [2022-11-20 11:25:20,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:20,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:25:20,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:20,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:25:20,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:25:20,779 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 262 [2022-11-20 11:25:20,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 227 transitions, 458 flow. Second operand has 5 states, 5 states have (on average 220.0) internal successors, (1100), 5 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states 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 11:25:20,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:20,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 262 [2022-11-20 11:25:20,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:20,980 INFO L130 PetriNetUnfolder]: 4/239 cut-off events. [2022-11-20 11:25:20,980 INFO L131 PetriNetUnfolder]: For 2/3 co-relation queries the response was YES. [2022-11-20 11:25:20,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 239 events. 4/239 cut-off events. For 2/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 261 event pairs, 0 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 277. Up to 25 conditions per place. [2022-11-20 11:25:20,985 INFO L137 encePairwiseOnDemand]: 252/262 looper letters, 28 selfloop transitions, 8 changer transitions 0/235 dead transitions. [2022-11-20 11:25:20,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 235 transitions, 546 flow [2022-11-20 11:25:20,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:25:20,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:25:20,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1118 transitions. [2022-11-20 11:25:20,991 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8534351145038168 [2022-11-20 11:25:20,991 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1118 transitions. [2022-11-20 11:25:20,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1118 transitions. [2022-11-20 11:25:20,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:20,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1118 transitions. [2022-11-20 11:25:20,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 223.6) internal successors, (1118), 5 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states 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 11:25:21,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states 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 11:25:21,004 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states 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 11:25:21,004 INFO L175 Difference]: Start difference. First operand has 234 places, 227 transitions, 458 flow. Second operand 5 states and 1118 transitions. [2022-11-20 11:25:21,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 235 transitions, 546 flow [2022-11-20 11:25:21,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 235 transitions, 546 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:25:21,010 INFO L231 Difference]: Finished difference. Result has 232 places, 229 transitions, 490 flow [2022-11-20 11:25:21,011 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=490, PETRI_PLACES=232, PETRI_TRANSITIONS=229} [2022-11-20 11:25:21,012 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, -5 predicate places. [2022-11-20 11:25:21,012 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 229 transitions, 490 flow [2022-11-20 11:25:21,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 220.0) internal successors, (1100), 5 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states 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 11:25:21,013 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:21,013 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] [2022-11-20 11:25:21,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:25:21,014 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:25:21,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:21,015 INFO L85 PathProgramCache]: Analyzing trace with hash 556961071, now seen corresponding path program 1 times [2022-11-20 11:25:21,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:21,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635875329] [2022-11-20 11:25:21,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:21,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:21,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:21,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:25:21,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:21,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635875329] [2022-11-20 11:25:21,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635875329] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:21,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978887744] [2022-11-20 11:25:21,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:21,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:21,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:21,491 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:25:21,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:25:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:21,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:25:21,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:21,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:25:21,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:25:22,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:25:22,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978887744] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:25:22,096 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:25:22,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-20 11:25:22,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815152979] [2022-11-20 11:25:22,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:25:22,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:25:22,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:22,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:25:22,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:25:22,109 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 262 [2022-11-20 11:25:22,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 229 transitions, 490 flow. Second operand has 15 states, 15 states have (on average 217.33333333333334) internal successors, (3260), 15 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:22,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:22,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 262 [2022-11-20 11:25:22,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:22,426 INFO L130 PetriNetUnfolder]: 4/257 cut-off events. [2022-11-20 11:25:22,427 INFO L131 PetriNetUnfolder]: For 10/11 co-relation queries the response was YES. [2022-11-20 11:25:22,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 257 events. 4/257 cut-off events. For 10/11 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 243 event pairs, 0 based on Foata normal form. 4/253 useless extension candidates. Maximal degree in co-relation 327. Up to 19 conditions per place. [2022-11-20 11:25:22,431 INFO L137 encePairwiseOnDemand]: 246/262 looper letters, 30 selfloop transitions, 22 changer transitions 0/249 dead transitions. [2022-11-20 11:25:22,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 249 transitions, 638 flow [2022-11-20 11:25:22,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:25:22,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 11:25:22,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2410 transitions. [2022-11-20 11:25:22,438 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8362248438584317 [2022-11-20 11:25:22,438 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2410 transitions. [2022-11-20 11:25:22,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2410 transitions. [2022-11-20 11:25:22,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:22,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2410 transitions. [2022-11-20 11:25:22,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 219.0909090909091) internal successors, (2410), 11 states have internal predecessors, (2410), 0 states have call successors, (0), 0 states 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 11:25:22,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 262.0) internal successors, (3144), 12 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states 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 11:25:22,455 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 262.0) internal successors, (3144), 12 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states 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 11:25:22,455 INFO L175 Difference]: Start difference. First operand has 232 places, 229 transitions, 490 flow. Second operand 11 states and 2410 transitions. [2022-11-20 11:25:22,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 249 transitions, 638 flow [2022-11-20 11:25:22,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 249 transitions, 626 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:25:22,463 INFO L231 Difference]: Finished difference. Result has 242 places, 241 transitions, 589 flow [2022-11-20 11:25:22,464 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=589, PETRI_PLACES=242, PETRI_TRANSITIONS=241} [2022-11-20 11:25:22,466 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 5 predicate places. [2022-11-20 11:25:22,466 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 241 transitions, 589 flow [2022-11-20 11:25:22,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 217.33333333333334) internal successors, (3260), 15 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:22,471 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:22,471 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:22,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:25:22,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:22,678 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:25:22,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:22,679 INFO L85 PathProgramCache]: Analyzing trace with hash -906794637, now seen corresponding path program 2 times [2022-11-20 11:25:22,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:22,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504507581] [2022-11-20 11:25:22,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:22,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:23,161 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 11:25:23,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:23,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504507581] [2022-11-20 11:25:23,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504507581] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:23,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752355233] [2022-11-20 11:25:23,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:25:23,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:23,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:23,167 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:25:23,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:25:23,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:25:23,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:25:23,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 11:25:23,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:23,585 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-20 11:25:23,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:25:23,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752355233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:23,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:25:23,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-11-20 11:25:23,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426233676] [2022-11-20 11:25:23,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:23,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:25:23,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:23,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:25:23,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:25:23,597 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-20 11:25:23,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 241 transitions, 589 flow. Second operand has 7 states, 7 states have (on average 215.0) internal successors, (1505), 7 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states 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 11:25:23,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:23,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-20 11:25:23,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:24,733 INFO L130 PetriNetUnfolder]: 281/1964 cut-off events. [2022-11-20 11:25:24,734 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-11-20 11:25:24,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2623 conditions, 1964 events. 281/1964 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 14180 event pairs, 2 based on Foata normal form. 0/1810 useless extension candidates. Maximal degree in co-relation 2615. Up to 196 conditions per place. [2022-11-20 11:25:24,750 INFO L137 encePairwiseOnDemand]: 250/262 looper letters, 103 selfloop transitions, 35 changer transitions 0/348 dead transitions. [2022-11-20 11:25:24,750 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 348 transitions, 1090 flow [2022-11-20 11:25:24,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:25:24,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-20 11:25:24,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3549 transitions. [2022-11-20 11:25:24,760 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8466125954198473 [2022-11-20 11:25:24,760 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3549 transitions. [2022-11-20 11:25:24,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3549 transitions. [2022-11-20 11:25:24,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:24,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3549 transitions. [2022-11-20 11:25:24,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 221.8125) internal successors, (3549), 16 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states 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 11:25:24,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 262.0) internal successors, (4454), 17 states have internal predecessors, (4454), 0 states have call successors, (0), 0 states 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 11:25:24,786 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 262.0) internal successors, (4454), 17 states have internal predecessors, (4454), 0 states have call successors, (0), 0 states 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 11:25:24,787 INFO L175 Difference]: Start difference. First operand has 242 places, 241 transitions, 589 flow. Second operand 16 states and 3549 transitions. [2022-11-20 11:25:24,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 348 transitions, 1090 flow [2022-11-20 11:25:24,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 348 transitions, 1073 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-20 11:25:24,799 INFO L231 Difference]: Finished difference. Result has 263 places, 272 transitions, 786 flow [2022-11-20 11:25:24,800 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=786, PETRI_PLACES=263, PETRI_TRANSITIONS=272} [2022-11-20 11:25:24,802 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 26 predicate places. [2022-11-20 11:25:24,802 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 272 transitions, 786 flow [2022-11-20 11:25:24,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 215.0) internal successors, (1505), 7 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states 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 11:25:24,804 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:24,804 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:24,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:25:25,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:25,011 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:25:25,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:25,012 INFO L85 PathProgramCache]: Analyzing trace with hash 112655201, now seen corresponding path program 3 times [2022-11-20 11:25:25,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:25,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536614214] [2022-11-20 11:25:25,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:25,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:25,409 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 11:25:25,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:25,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536614214] [2022-11-20 11:25:25,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536614214] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:25,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858744404] [2022-11-20 11:25:25,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:25:25,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:25,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:25,412 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:25:25,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:25:25,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-20 11:25:25,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:25:25,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 11:25:25,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:25,698 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-20 11:25:25,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:25:25,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858744404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:25,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:25:25,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-11-20 11:25:25,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741805430] [2022-11-20 11:25:25,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:25,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:25:25,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:25,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:25:25,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:25:25,704 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-20 11:25:25,706 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 272 transitions, 786 flow. Second operand has 7 states, 7 states have (on average 215.0) internal successors, (1505), 7 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states 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 11:25:25,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:25,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-20 11:25:25,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:26,779 INFO L130 PetriNetUnfolder]: 396/2424 cut-off events. [2022-11-20 11:25:26,779 INFO L131 PetriNetUnfolder]: For 1141/1255 co-relation queries the response was YES. [2022-11-20 11:25:26,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3997 conditions, 2424 events. 396/2424 cut-off events. For 1141/1255 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 16554 event pairs, 148 based on Foata normal form. 20/2263 useless extension candidates. Maximal degree in co-relation 3980. Up to 334 conditions per place. [2022-11-20 11:25:26,800 INFO L137 encePairwiseOnDemand]: 252/262 looper letters, 109 selfloop transitions, 18 changer transitions 43/380 dead transitions. [2022-11-20 11:25:26,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 380 transitions, 1557 flow [2022-11-20 11:25:26,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:25:26,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 11:25:26,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2452 transitions. [2022-11-20 11:25:26,807 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8507980569049272 [2022-11-20 11:25:26,807 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2452 transitions. [2022-11-20 11:25:26,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2452 transitions. [2022-11-20 11:25:26,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:26,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2452 transitions. [2022-11-20 11:25:26,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 222.9090909090909) internal successors, (2452), 11 states have internal predecessors, (2452), 0 states have call successors, (0), 0 states 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 11:25:26,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 262.0) internal successors, (3144), 12 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states 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 11:25:26,824 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 262.0) internal successors, (3144), 12 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states 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 11:25:26,824 INFO L175 Difference]: Start difference. First operand has 263 places, 272 transitions, 786 flow. Second operand 11 states and 2452 transitions. [2022-11-20 11:25:26,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 380 transitions, 1557 flow [2022-11-20 11:25:26,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 380 transitions, 1557 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:25:26,844 INFO L231 Difference]: Finished difference. Result has 278 places, 276 transitions, 895 flow [2022-11-20 11:25:26,844 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=895, PETRI_PLACES=278, PETRI_TRANSITIONS=276} [2022-11-20 11:25:26,847 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 41 predicate places. [2022-11-20 11:25:26,848 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 276 transitions, 895 flow [2022-11-20 11:25:26,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 215.0) internal successors, (1505), 7 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states 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 11:25:26,849 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:26,849 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:26,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:25:27,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:27,058 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:25:27,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:27,059 INFO L85 PathProgramCache]: Analyzing trace with hash -799345851, now seen corresponding path program 4 times [2022-11-20 11:25:27,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:27,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465066985] [2022-11-20 11:25:27,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:27,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:27,562 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 11:25:27,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:27,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465066985] [2022-11-20 11:25:27,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465066985] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:27,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395977917] [2022-11-20 11:25:27,564 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:25:27,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:27,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:27,566 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:25:27,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:25:27,732 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:25:27,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:25:27,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:25:27,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:27,999 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 11:25:28,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:25:28,180 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 11:25:28,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395977917] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:25:28,180 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:25:28,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-20 11:25:28,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72481744] [2022-11-20 11:25:28,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:25:28,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:25:28,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:28,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:25:28,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:25:28,190 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 262 [2022-11-20 11:25:28,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 276 transitions, 895 flow. Second operand has 22 states, 22 states have (on average 217.1818181818182) internal successors, (4778), 22 states have internal predecessors, (4778), 0 states have call successors, (0), 0 states 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 11:25:28,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:28,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 262 [2022-11-20 11:25:28,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:28,872 INFO L130 PetriNetUnfolder]: 50/1116 cut-off events. [2022-11-20 11:25:28,873 INFO L131 PetriNetUnfolder]: For 308/320 co-relation queries the response was YES. [2022-11-20 11:25:28,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1569 conditions, 1116 events. 50/1116 cut-off events. For 308/320 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5360 event pairs, 4 based on Foata normal form. 6/1086 useless extension candidates. Maximal degree in co-relation 1546. Up to 36 conditions per place. [2022-11-20 11:25:28,884 INFO L137 encePairwiseOnDemand]: 246/262 looper letters, 38 selfloop transitions, 34 changer transitions 0/304 dead transitions. [2022-11-20 11:25:28,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 304 transitions, 1151 flow [2022-11-20 11:25:28,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:25:28,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 11:25:28,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3714 transitions. [2022-11-20 11:25:28,918 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8338572070049394 [2022-11-20 11:25:28,919 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3714 transitions. [2022-11-20 11:25:28,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3714 transitions. [2022-11-20 11:25:28,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:28,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3714 transitions. [2022-11-20 11:25:28,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 218.47058823529412) internal successors, (3714), 17 states have internal predecessors, (3714), 0 states have call successors, (0), 0 states 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 11:25:28,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 262.0) internal successors, (4716), 18 states have internal predecessors, (4716), 0 states have call successors, (0), 0 states 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 11:25:28,958 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 262.0) internal successors, (4716), 18 states have internal predecessors, (4716), 0 states have call successors, (0), 0 states 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 11:25:28,958 INFO L175 Difference]: Start difference. First operand has 278 places, 276 transitions, 895 flow. Second operand 17 states and 3714 transitions. [2022-11-20 11:25:28,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 304 transitions, 1151 flow [2022-11-20 11:25:28,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 304 transitions, 1114 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-20 11:25:28,970 INFO L231 Difference]: Finished difference. Result has 282 places, 290 transitions, 1033 flow [2022-11-20 11:25:28,970 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1033, PETRI_PLACES=282, PETRI_TRANSITIONS=290} [2022-11-20 11:25:28,973 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 45 predicate places. [2022-11-20 11:25:28,973 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 290 transitions, 1033 flow [2022-11-20 11:25:28,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 217.1818181818182) internal successors, (4778), 22 states have internal predecessors, (4778), 0 states have call successors, (0), 0 states 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 11:25:28,975 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:28,975 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:28,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:25:29,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffc6e8d-c5aa-4c7d-9fb6-dbc5d64bd813/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 11:25:29,182 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:25:29,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:29,182 INFO L85 PathProgramCache]: Analyzing trace with hash -730123991, now seen corresponding path program 5 times [2022-11-20 11:25:29,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:29,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91556072] [2022-11-20 11:25:29,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:29,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:29,779 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-20 11:25:29,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:29,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91556072] [2022-11-20 11:25:29,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91556072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:29,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:29,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:25:29,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573061629] [2022-11-20 11:25:29,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:29,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:25:29,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:29,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:25:29,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:25:29,785 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-20 11:25:29,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 290 transitions, 1033 flow. Second operand has 7 states, 7 states have (on average 215.0) internal successors, (1505), 7 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states 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 11:25:29,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:29,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-20 11:25:29,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:30,812 INFO L130 PetriNetUnfolder]: 439/3019 cut-off events. [2022-11-20 11:25:30,812 INFO L131 PetriNetUnfolder]: For 2207/2319 co-relation queries the response was YES. [2022-11-20 11:25:30,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5092 conditions, 3019 events. 439/3019 cut-off events. For 2207/2319 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 22913 event pairs, 167 based on Foata normal form. 31/2892 useless extension candidates. Maximal degree in co-relation 5069. Up to 261 conditions per place. [2022-11-20 11:25:30,904 INFO L137 encePairwiseOnDemand]: 254/262 looper letters, 118 selfloop transitions, 43 changer transitions 0/385 dead transitions. [2022-11-20 11:25:30,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 385 transitions, 1788 flow [2022-11-20 11:25:30,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:25:30,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:25:30,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1808 transitions. [2022-11-20 11:25:30,911 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8625954198473282 [2022-11-20 11:25:30,912 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1808 transitions. [2022-11-20 11:25:30,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1808 transitions. [2022-11-20 11:25:30,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:30,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1808 transitions. [2022-11-20 11:25:30,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 226.0) internal successors, (1808), 8 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states 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 11:25:30,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states 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 11:25:30,924 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states 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 11:25:30,924 INFO L175 Difference]: Start difference. First operand has 282 places, 290 transitions, 1033 flow. Second operand 8 states and 1808 transitions. [2022-11-20 11:25:30,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 385 transitions, 1788 flow [2022-11-20 11:25:30,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 385 transitions, 1743 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-11-20 11:25:30,943 INFO L231 Difference]: Finished difference. Result has 287 places, 308 transitions, 1273 flow [2022-11-20 11:25:30,944 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1273, PETRI_PLACES=287, PETRI_TRANSITIONS=308} [2022-11-20 11:25:30,945 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 50 predicate places. [2022-11-20 11:25:30,945 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 308 transitions, 1273 flow [2022-11-20 11:25:30,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 215.0) internal successors, (1505), 7 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states 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 11:25:30,946 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:30,947 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:30,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:25:30,947 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:25:30,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:30,948 INFO L85 PathProgramCache]: Analyzing trace with hash -342044341, now seen corresponding path program 6 times [2022-11-20 11:25:30,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:30,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169491692] [2022-11-20 11:25:30,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:30,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:31,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:31,535 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-20 11:25:31,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:31,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169491692] [2022-11-20 11:25:31,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169491692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:31,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:31,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:25:31,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808150191] [2022-11-20 11:25:31,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:31,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:25:31,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:31,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:25:31,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:25:31,547 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-20 11:25:31,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 308 transitions, 1273 flow. Second operand has 7 states, 7 states have (on average 215.0) internal successors, (1505), 7 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states 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 11:25:31,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:31,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-20 11:25:31,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:33,672 INFO L130 PetriNetUnfolder]: 1003/5989 cut-off events. [2022-11-20 11:25:33,673 INFO L131 PetriNetUnfolder]: For 1596/1631 co-relation queries the response was YES. [2022-11-20 11:25:33,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9387 conditions, 5989 events. 1003/5989 cut-off events. For 1596/1631 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 56264 event pairs, 130 based on Foata normal form. 11/5675 useless extension candidates. Maximal degree in co-relation 9359. Up to 897 conditions per place. [2022-11-20 11:25:33,741 INFO L137 encePairwiseOnDemand]: 252/262 looper letters, 75 selfloop transitions, 19 changer transitions 1/372 dead transitions. [2022-11-20 11:25:33,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 372 transitions, 1595 flow [2022-11-20 11:25:33,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:25:33,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 11:25:33,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2226 transitions. [2022-11-20 11:25:33,747 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.849618320610687 [2022-11-20 11:25:33,748 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2226 transitions. [2022-11-20 11:25:33,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2226 transitions. [2022-11-20 11:25:33,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:33,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2226 transitions. [2022-11-20 11:25:33,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 222.6) internal successors, (2226), 10 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states 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 11:25:33,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states 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 11:25:33,762 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states 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 11:25:33,762 INFO L175 Difference]: Start difference. First operand has 287 places, 308 transitions, 1273 flow. Second operand 10 states and 2226 transitions. [2022-11-20 11:25:33,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 372 transitions, 1595 flow [2022-11-20 11:25:33,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 372 transitions, 1583 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-11-20 11:25:33,789 INFO L231 Difference]: Finished difference. Result has 299 places, 321 transitions, 1347 flow [2022-11-20 11:25:33,790 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=1261, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1347, PETRI_PLACES=299, PETRI_TRANSITIONS=321} [2022-11-20 11:25:33,793 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 62 predicate places. [2022-11-20 11:25:33,794 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 321 transitions, 1347 flow [2022-11-20 11:25:33,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 215.0) internal successors, (1505), 7 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states 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 11:25:33,796 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:33,796 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:33,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:25:33,797 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:25:33,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:33,798 INFO L85 PathProgramCache]: Analyzing trace with hash 473408026, now seen corresponding path program 1 times [2022-11-20 11:25:33,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:33,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981675882] [2022-11-20 11:25:33,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:33,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:34,455 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-20 11:25:34,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:34,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981675882] [2022-11-20 11:25:34,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981675882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:34,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:34,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:25:34,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79510678] [2022-11-20 11:25:34,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:34,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:25:34,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:34,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:25:34,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:25:34,462 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-20 11:25:34,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 321 transitions, 1347 flow. Second operand has 8 states, 8 states have (on average 215.75) internal successors, (1726), 8 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states 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 11:25:34,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:34,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-20 11:25:34,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:36,656 INFO L130 PetriNetUnfolder]: 1000/5495 cut-off events. [2022-11-20 11:25:36,656 INFO L131 PetriNetUnfolder]: For 2334/2390 co-relation queries the response was YES. [2022-11-20 11:25:36,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9430 conditions, 5495 events. 1000/5495 cut-off events. For 2334/2390 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 48832 event pairs, 362 based on Foata normal form. 22/5262 useless extension candidates. Maximal degree in co-relation 9398. Up to 925 conditions per place. [2022-11-20 11:25:36,714 INFO L137 encePairwiseOnDemand]: 252/262 looper letters, 95 selfloop transitions, 20 changer transitions 27/419 dead transitions. [2022-11-20 11:25:36,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 419 transitions, 1934 flow [2022-11-20 11:25:36,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:25:36,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 11:25:36,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2456 transitions. [2022-11-20 11:25:36,721 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8521859819569744 [2022-11-20 11:25:36,721 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2456 transitions. [2022-11-20 11:25:36,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2456 transitions. [2022-11-20 11:25:36,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:36,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2456 transitions. [2022-11-20 11:25:36,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 223.27272727272728) internal successors, (2456), 11 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states 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 11:25:36,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 262.0) internal successors, (3144), 12 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states 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 11:25:36,736 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 262.0) internal successors, (3144), 12 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states 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 11:25:36,736 INFO L175 Difference]: Start difference. First operand has 299 places, 321 transitions, 1347 flow. Second operand 11 states and 2456 transitions. [2022-11-20 11:25:36,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 419 transitions, 1934 flow [2022-11-20 11:25:36,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 419 transitions, 1934 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:25:36,761 INFO L231 Difference]: Finished difference. Result has 314 places, 333 transitions, 1475 flow [2022-11-20 11:25:36,762 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=1347, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1475, PETRI_PLACES=314, PETRI_TRANSITIONS=333} [2022-11-20 11:25:36,763 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 77 predicate places. [2022-11-20 11:25:36,763 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 333 transitions, 1475 flow [2022-11-20 11:25:36,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 215.75) internal successors, (1726), 8 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states 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 11:25:36,764 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:36,764 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:36,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:25:36,765 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:25:36,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:36,766 INFO L85 PathProgramCache]: Analyzing trace with hash 962144838, now seen corresponding path program 2 times [2022-11-20 11:25:36,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:36,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328525996] [2022-11-20 11:25:36,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:36,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:36,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:37,321 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-20 11:25:37,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:37,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328525996] [2022-11-20 11:25:37,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328525996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:37,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:37,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:25:37,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225282811] [2022-11-20 11:25:37,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:37,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:25:37,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:37,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:25:37,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:25:37,327 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-20 11:25:37,329 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 333 transitions, 1475 flow. Second operand has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states 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 11:25:37,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:37,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-20 11:25:37,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:39,741 INFO L130 PetriNetUnfolder]: 1155/6321 cut-off events. [2022-11-20 11:25:39,742 INFO L131 PetriNetUnfolder]: For 5304/5468 co-relation queries the response was YES. [2022-11-20 11:25:39,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12123 conditions, 6321 events. 1155/6321 cut-off events. For 5304/5468 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 58163 event pairs, 322 based on Foata normal form. 53/6282 useless extension candidates. Maximal degree in co-relation 12085. Up to 779 conditions per place. [2022-11-20 11:25:39,802 INFO L137 encePairwiseOnDemand]: 248/262 looper letters, 104 selfloop transitions, 63 changer transitions 8/452 dead transitions. [2022-11-20 11:25:39,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 452 transitions, 2350 flow [2022-11-20 11:25:39,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:25:39,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-20 11:25:39,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3124 transitions. [2022-11-20 11:25:39,811 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8516902944383861 [2022-11-20 11:25:39,812 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3124 transitions. [2022-11-20 11:25:39,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3124 transitions. [2022-11-20 11:25:39,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:39,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3124 transitions. [2022-11-20 11:25:39,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 223.14285714285714) internal successors, (3124), 14 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states 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 11:25:39,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 262.0) internal successors, (3930), 15 states have internal predecessors, (3930), 0 states have call successors, (0), 0 states 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 11:25:39,833 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 262.0) internal successors, (3930), 15 states have internal predecessors, (3930), 0 states have call successors, (0), 0 states 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 11:25:39,833 INFO L175 Difference]: Start difference. First operand has 314 places, 333 transitions, 1475 flow. Second operand 14 states and 3124 transitions. [2022-11-20 11:25:39,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 452 transitions, 2350 flow [2022-11-20 11:25:39,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 452 transitions, 2337 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-20 11:25:39,870 INFO L231 Difference]: Finished difference. Result has 331 places, 374 transitions, 1967 flow [2022-11-20 11:25:39,871 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1967, PETRI_PLACES=331, PETRI_TRANSITIONS=374} [2022-11-20 11:25:39,872 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 94 predicate places. [2022-11-20 11:25:39,872 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 374 transitions, 1967 flow [2022-11-20 11:25:39,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states 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 11:25:39,873 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:39,874 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:39,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:25:39,874 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:25:39,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:39,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1857913624, now seen corresponding path program 3 times [2022-11-20 11:25:39,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:39,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992070777] [2022-11-20 11:25:39,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:39,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:40,500 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-20 11:25:40,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:40,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992070777] [2022-11-20 11:25:40,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992070777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:40,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:40,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:25:40,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367956100] [2022-11-20 11:25:40,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:40,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:25:40,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:40,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:25:40,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:25:40,506 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-20 11:25:40,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 374 transitions, 1967 flow. Second operand has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states 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 11:25:40,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:40,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-20 11:25:40,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:43,362 INFO L130 PetriNetUnfolder]: 1190/7473 cut-off events. [2022-11-20 11:25:43,363 INFO L131 PetriNetUnfolder]: For 11699/12068 co-relation queries the response was YES. [2022-11-20 11:25:43,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15589 conditions, 7473 events. 1190/7473 cut-off events. For 11699/12068 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 72242 event pairs, 455 based on Foata normal form. 99/7487 useless extension candidates. Maximal degree in co-relation 15542. Up to 1067 conditions per place. [2022-11-20 11:25:43,443 INFO L137 encePairwiseOnDemand]: 251/262 looper letters, 141 selfloop transitions, 58 changer transitions 10/486 dead transitions. [2022-11-20 11:25:43,443 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 486 transitions, 2979 flow [2022-11-20 11:25:43,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:25:43,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 11:25:43,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2241 transitions. [2022-11-20 11:25:43,450 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8553435114503817 [2022-11-20 11:25:43,450 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2241 transitions. [2022-11-20 11:25:43,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2241 transitions. [2022-11-20 11:25:43,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:43,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2241 transitions. [2022-11-20 11:25:43,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 224.1) internal successors, (2241), 10 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states 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 11:25:43,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states 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 11:25:43,464 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states 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 11:25:43,465 INFO L175 Difference]: Start difference. First operand has 331 places, 374 transitions, 1967 flow. Second operand 10 states and 2241 transitions. [2022-11-20 11:25:43,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 486 transitions, 2979 flow [2022-11-20 11:25:43,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 486 transitions, 2954 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-20 11:25:43,574 INFO L231 Difference]: Finished difference. Result has 344 places, 395 transitions, 2363 flow [2022-11-20 11:25:43,575 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=1953, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2363, PETRI_PLACES=344, PETRI_TRANSITIONS=395} [2022-11-20 11:25:43,576 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 107 predicate places. [2022-11-20 11:25:43,576 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 395 transitions, 2363 flow [2022-11-20 11:25:43,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states 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 11:25:43,577 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:43,577 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:43,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:25:43,578 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:25:43,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:43,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1194336040, now seen corresponding path program 4 times [2022-11-20 11:25:43,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:43,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596366482] [2022-11-20 11:25:43,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:43,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:43,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:44,245 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-20 11:25:44,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:44,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596366482] [2022-11-20 11:25:44,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596366482] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:44,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:44,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:25:44,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410081280] [2022-11-20 11:25:44,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:44,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:25:44,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:44,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:25:44,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:25:44,252 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-20 11:25:44,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 395 transitions, 2363 flow. Second operand has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states 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 11:25:44,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:44,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-20 11:25:44,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:46,742 INFO L130 PetriNetUnfolder]: 1383/7995 cut-off events. [2022-11-20 11:25:46,742 INFO L131 PetriNetUnfolder]: For 20010/20485 co-relation queries the response was YES. [2022-11-20 11:25:46,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18266 conditions, 7995 events. 1383/7995 cut-off events. For 20010/20485 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 79103 event pairs, 477 based on Foata normal form. 95/7985 useless extension candidates. Maximal degree in co-relation 18212. Up to 1144 conditions per place. [2022-11-20 11:25:46,849 INFO L137 encePairwiseOnDemand]: 249/262 looper letters, 127 selfloop transitions, 84 changer transitions 4/492 dead transitions. [2022-11-20 11:25:46,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 492 transitions, 3503 flow [2022-11-20 11:25:46,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:25:46,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 11:25:46,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2243 transitions. [2022-11-20 11:25:46,855 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8561068702290077 [2022-11-20 11:25:46,855 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2243 transitions. [2022-11-20 11:25:46,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2243 transitions. [2022-11-20 11:25:46,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:46,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2243 transitions. [2022-11-20 11:25:46,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 224.3) internal successors, (2243), 10 states have internal predecessors, (2243), 0 states have call successors, (0), 0 states 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 11:25:46,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states 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 11:25:46,869 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states 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 11:25:46,870 INFO L175 Difference]: Start difference. First operand has 344 places, 395 transitions, 2363 flow. Second operand 10 states and 2243 transitions. [2022-11-20 11:25:46,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 492 transitions, 3503 flow [2022-11-20 11:25:46,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 492 transitions, 3469 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-11-20 11:25:47,004 INFO L231 Difference]: Finished difference. Result has 360 places, 420 transitions, 2986 flow [2022-11-20 11:25:47,005 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=2333, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2986, PETRI_PLACES=360, PETRI_TRANSITIONS=420} [2022-11-20 11:25:47,005 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 123 predicate places. [2022-11-20 11:25:47,006 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 420 transitions, 2986 flow [2022-11-20 11:25:47,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states 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 11:25:47,007 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:47,007 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:47,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:25:47,008 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:25:47,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:47,008 INFO L85 PathProgramCache]: Analyzing trace with hash 444981532, now seen corresponding path program 5 times [2022-11-20 11:25:47,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:47,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662150828] [2022-11-20 11:25:47,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:47,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:47,618 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-20 11:25:47,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:47,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662150828] [2022-11-20 11:25:47,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662150828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:47,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:47,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:25:47,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76929784] [2022-11-20 11:25:47,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:47,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:25:47,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:47,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:25:47,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:25:47,623 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-20 11:25:47,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 420 transitions, 2986 flow. Second operand has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states 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 11:25:47,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:47,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-20 11:25:47,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:50,173 INFO L130 PetriNetUnfolder]: 1475/8601 cut-off events. [2022-11-20 11:25:50,174 INFO L131 PetriNetUnfolder]: For 31665/32329 co-relation queries the response was YES. [2022-11-20 11:25:50,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21106 conditions, 8601 events. 1475/8601 cut-off events. For 31665/32329 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 86015 event pairs, 588 based on Foata normal form. 122/8614 useless extension candidates. Maximal degree in co-relation 21044. Up to 1081 conditions per place. [2022-11-20 11:25:50,300 INFO L137 encePairwiseOnDemand]: 252/262 looper letters, 163 selfloop transitions, 80 changer transitions 5/525 dead transitions. [2022-11-20 11:25:50,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 525 transitions, 4223 flow [2022-11-20 11:25:50,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:25:50,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 11:25:50,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2253 transitions. [2022-11-20 11:25:50,306 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8599236641221374 [2022-11-20 11:25:50,306 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2253 transitions. [2022-11-20 11:25:50,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2253 transitions. [2022-11-20 11:25:50,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:50,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2253 transitions. [2022-11-20 11:25:50,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 225.3) internal successors, (2253), 10 states have internal predecessors, (2253), 0 states have call successors, (0), 0 states 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 11:25:50,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states 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 11:25:50,320 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states 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 11:25:50,321 INFO L175 Difference]: Start difference. First operand has 360 places, 420 transitions, 2986 flow. Second operand 10 states and 2253 transitions. [2022-11-20 11:25:50,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 525 transitions, 4223 flow [2022-11-20 11:25:50,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 525 transitions, 4203 flow, removed 10 selfloop flow, removed 0 redundant places. [2022-11-20 11:25:50,504 INFO L231 Difference]: Finished difference. Result has 376 places, 434 transitions, 3505 flow [2022-11-20 11:25:50,505 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=2966, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3505, PETRI_PLACES=376, PETRI_TRANSITIONS=434} [2022-11-20 11:25:50,506 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 139 predicate places. [2022-11-20 11:25:50,507 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 434 transitions, 3505 flow [2022-11-20 11:25:50,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states 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 11:25:50,507 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:50,508 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:50,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:25:50,508 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:25:50,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:50,510 INFO L85 PathProgramCache]: Analyzing trace with hash -206040826, now seen corresponding path program 6 times [2022-11-20 11:25:50,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:50,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395346267] [2022-11-20 11:25:50,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:50,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:51,043 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-20 11:25:51,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:51,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395346267] [2022-11-20 11:25:51,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395346267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:51,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:51,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:25:51,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895334254] [2022-11-20 11:25:51,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:51,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:25:51,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:51,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:25:51,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:25:51,048 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-20 11:25:51,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 434 transitions, 3505 flow. Second operand has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states 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 11:25:51,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:51,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-20 11:25:51,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:54,852 INFO L130 PetriNetUnfolder]: 1841/11579 cut-off events. [2022-11-20 11:25:54,852 INFO L131 PetriNetUnfolder]: For 51180/51887 co-relation queries the response was YES. [2022-11-20 11:25:54,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27921 conditions, 11579 events. 1841/11579 cut-off events. For 51180/51887 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 128173 event pairs, 478 based on Foata normal form. 262/11708 useless extension candidates. Maximal degree in co-relation 27852. Up to 1320 conditions per place. [2022-11-20 11:25:55,024 INFO L137 encePairwiseOnDemand]: 249/262 looper letters, 130 selfloop transitions, 80 changer transitions 46/533 dead transitions. [2022-11-20 11:25:55,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 533 transitions, 4736 flow [2022-11-20 11:25:55,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:25:55,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 11:25:55,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2451 transitions. [2022-11-20 11:25:55,030 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8504510756419154 [2022-11-20 11:25:55,030 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2451 transitions. [2022-11-20 11:25:55,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2451 transitions. [2022-11-20 11:25:55,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:55,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2451 transitions. [2022-11-20 11:25:55,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 222.8181818181818) internal successors, (2451), 11 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states 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 11:25:55,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 262.0) internal successors, (3144), 12 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states 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 11:25:55,044 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 262.0) internal successors, (3144), 12 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states 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 11:25:55,045 INFO L175 Difference]: Start difference. First operand has 376 places, 434 transitions, 3505 flow. Second operand 11 states and 2451 transitions. [2022-11-20 11:25:55,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 533 transitions, 4736 flow [2022-11-20 11:25:55,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 533 transitions, 4658 flow, removed 19 selfloop flow, removed 2 redundant places. [2022-11-20 11:25:55,382 INFO L231 Difference]: Finished difference. Result has 388 places, 423 transitions, 3496 flow [2022-11-20 11:25:55,383 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=3444, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3496, PETRI_PLACES=388, PETRI_TRANSITIONS=423} [2022-11-20 11:25:55,385 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 151 predicate places. [2022-11-20 11:25:55,385 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 423 transitions, 3496 flow [2022-11-20 11:25:55,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states 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 11:25:55,386 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:55,386 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:55,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:25:55,387 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:25:55,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:55,388 INFO L85 PathProgramCache]: Analyzing trace with hash -58570744, now seen corresponding path program 7 times [2022-11-20 11:25:55,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:55,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423919944] [2022-11-20 11:25:55,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:55,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:55,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,062 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-20 11:25:56,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:56,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423919944] [2022-11-20 11:25:56,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423919944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:56,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:56,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:25:56,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846859850] [2022-11-20 11:25:56,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:56,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:25:56,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:56,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:25:56,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:25:56,067 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-20 11:25:56,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 423 transitions, 3496 flow. Second operand has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states 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 11:25:56,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:56,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-20 11:25:56,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:26:00,059 INFO L130 PetriNetUnfolder]: 2061/12628 cut-off events. [2022-11-20 11:26:00,059 INFO L131 PetriNetUnfolder]: For 62424/63507 co-relation queries the response was YES. [2022-11-20 11:26:00,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30780 conditions, 12628 events. 2061/12628 cut-off events. For 62424/63507 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 140851 event pairs, 426 based on Foata normal form. 410/12882 useless extension candidates. Maximal degree in co-relation 30707. Up to 1372 conditions per place. [2022-11-20 11:26:00,247 INFO L137 encePairwiseOnDemand]: 244/262 looper letters, 136 selfloop transitions, 150 changer transitions 5/568 dead transitions. [2022-11-20 11:26:00,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 568 transitions, 5346 flow [2022-11-20 11:26:00,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:26:00,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-20 11:26:00,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3133 transitions. [2022-11-20 11:26:00,255 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.854143947655398 [2022-11-20 11:26:00,255 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3133 transitions. [2022-11-20 11:26:00,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3133 transitions. [2022-11-20 11:26:00,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:26:00,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3133 transitions. [2022-11-20 11:26:00,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 223.78571428571428) internal successors, (3133), 14 states have internal predecessors, (3133), 0 states have call successors, (0), 0 states 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 11:26:00,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 262.0) internal successors, (3930), 15 states have internal predecessors, (3930), 0 states have call successors, (0), 0 states 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 11:26:00,271 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 262.0) internal successors, (3930), 15 states have internal predecessors, (3930), 0 states have call successors, (0), 0 states 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 11:26:00,271 INFO L175 Difference]: Start difference. First operand has 388 places, 423 transitions, 3496 flow. Second operand 14 states and 3133 transitions. [2022-11-20 11:26:00,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 568 transitions, 5346 flow [2022-11-20 11:26:00,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 568 transitions, 5222 flow, removed 5 selfloop flow, removed 8 redundant places. [2022-11-20 11:26:00,531 INFO L231 Difference]: Finished difference. Result has 394 places, 498 transitions, 4812 flow [2022-11-20 11:26:00,532 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=3401, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4812, PETRI_PLACES=394, PETRI_TRANSITIONS=498} [2022-11-20 11:26:00,533 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 157 predicate places. [2022-11-20 11:26:00,533 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 498 transitions, 4812 flow [2022-11-20 11:26:00,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states 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 11:26:00,534 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:26:00,534 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:00,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:26:00,535 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:26:00,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:00,536 INFO L85 PathProgramCache]: Analyzing trace with hash -2000554290, now seen corresponding path program 8 times [2022-11-20 11:26:00,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:00,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383878183] [2022-11-20 11:26:00,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:00,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:01,006 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-20 11:26:01,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:01,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383878183] [2022-11-20 11:26:01,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383878183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:01,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:01,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:26:01,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227195014] [2022-11-20 11:26:01,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:01,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:26:01,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:01,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:26:01,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:26:01,011 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-20 11:26:01,013 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 498 transitions, 4812 flow. Second operand has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states 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 11:26:01,013 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:26:01,013 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-20 11:26:01,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:26:05,080 INFO L130 PetriNetUnfolder]: 2024/12379 cut-off events. [2022-11-20 11:26:05,080 INFO L131 PetriNetUnfolder]: For 74877/76370 co-relation queries the response was YES. [2022-11-20 11:26:05,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33263 conditions, 12379 events. 2024/12379 cut-off events. For 74877/76370 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 136840 event pairs, 528 based on Foata normal form. 497/12720 useless extension candidates. Maximal degree in co-relation 33186. Up to 1477 conditions per place. [2022-11-20 11:26:05,292 INFO L137 encePairwiseOnDemand]: 244/262 looper letters, 159 selfloop transitions, 117 changer transitions 10/563 dead transitions. [2022-11-20 11:26:05,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 563 transitions, 5748 flow [2022-11-20 11:26:05,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:26:05,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 11:26:05,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2240 transitions. [2022-11-20 11:26:05,298 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8549618320610687 [2022-11-20 11:26:05,298 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2240 transitions. [2022-11-20 11:26:05,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2240 transitions. [2022-11-20 11:26:05,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:26:05,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2240 transitions. [2022-11-20 11:26:05,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:05,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states 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 11:26:05,312 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states 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 11:26:05,312 INFO L175 Difference]: Start difference. First operand has 394 places, 498 transitions, 4812 flow. Second operand 10 states and 2240 transitions. [2022-11-20 11:26:05,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 563 transitions, 5748 flow [2022-11-20 11:26:05,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 563 transitions, 5696 flow, removed 26 selfloop flow, removed 0 redundant places. [2022-11-20 11:26:05,607 INFO L231 Difference]: Finished difference. Result has 405 places, 497 transitions, 4992 flow [2022-11-20 11:26:05,608 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=4745, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4992, PETRI_PLACES=405, PETRI_TRANSITIONS=497} [2022-11-20 11:26:05,609 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 168 predicate places. [2022-11-20 11:26:05,609 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 497 transitions, 4992 flow [2022-11-20 11:26:05,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states 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 11:26:05,610 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:26:05,611 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:05,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 11:26:05,612 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:26:05,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:05,613 INFO L85 PathProgramCache]: Analyzing trace with hash 208775224, now seen corresponding path program 9 times [2022-11-20 11:26:05,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:05,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394656479] [2022-11-20 11:26:05,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:05,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:06,142 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-20 11:26:06,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:06,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394656479] [2022-11-20 11:26:06,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394656479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:06,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:06,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:26:06,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91488547] [2022-11-20 11:26:06,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:06,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:26:06,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:06,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:26:06,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:26:06,148 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-20 11:26:06,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 497 transitions, 4992 flow. Second operand has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states 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 11:26:06,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:26:06,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-20 11:26:06,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:26:10,488 INFO L130 PetriNetUnfolder]: 2044/12609 cut-off events. [2022-11-20 11:26:10,489 INFO L131 PetriNetUnfolder]: For 79413/80883 co-relation queries the response was YES. [2022-11-20 11:26:10,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34789 conditions, 12609 events. 2044/12609 cut-off events. For 79413/80883 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 140265 event pairs, 472 based on Foata normal form. 417/12872 useless extension candidates. Maximal degree in co-relation 34709. Up to 1454 conditions per place. [2022-11-20 11:26:10,687 INFO L137 encePairwiseOnDemand]: 249/262 looper letters, 157 selfloop transitions, 119 changer transitions 8/561 dead transitions. [2022-11-20 11:26:10,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 561 transitions, 6052 flow [2022-11-20 11:26:10,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:26:10,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 11:26:10,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2241 transitions. [2022-11-20 11:26:10,691 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8553435114503817 [2022-11-20 11:26:10,691 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2241 transitions. [2022-11-20 11:26:10,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2241 transitions. [2022-11-20 11:26:10,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:26:10,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2241 transitions. [2022-11-20 11:26:10,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 224.1) internal successors, (2241), 10 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states 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 11:26:10,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states 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 11:26:10,699 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states 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 11:26:10,699 INFO L175 Difference]: Start difference. First operand has 405 places, 497 transitions, 4992 flow. Second operand 10 states and 2241 transitions. [2022-11-20 11:26:10,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 561 transitions, 6052 flow [2022-11-20 11:26:11,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 561 transitions, 5812 flow, removed 5 selfloop flow, removed 7 redundant places. [2022-11-20 11:26:11,012 INFO L231 Difference]: Finished difference. Result has 409 places, 506 transitions, 5284 flow [2022-11-20 11:26:11,012 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=4769, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5284, PETRI_PLACES=409, PETRI_TRANSITIONS=506} [2022-11-20 11:26:11,013 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 172 predicate places. [2022-11-20 11:26:11,013 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 506 transitions, 5284 flow [2022-11-20 11:26:11,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states 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 11:26:11,014 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:26:11,014 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:11,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 11:26:11,015 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:26:11,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:11,015 INFO L85 PathProgramCache]: Analyzing trace with hash -968992470, now seen corresponding path program 10 times [2022-11-20 11:26:11,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:11,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669581734] [2022-11-20 11:26:11,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:11,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:11,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:11,495 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-20 11:26:11,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:11,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669581734] [2022-11-20 11:26:11,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669581734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:11,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:11,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:26:11,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288513437] [2022-11-20 11:26:11,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:11,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:26:11,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:11,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:26:11,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:26:11,501 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-20 11:26:11,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 506 transitions, 5284 flow. Second operand has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states 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 11:26:11,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:26:11,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-20 11:26:11,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:26:16,672 INFO L130 PetriNetUnfolder]: 2226/13782 cut-off events. [2022-11-20 11:26:16,673 INFO L131 PetriNetUnfolder]: For 91072/92668 co-relation queries the response was YES. [2022-11-20 11:26:16,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38315 conditions, 13782 events. 2226/13782 cut-off events. For 91072/92668 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 156784 event pairs, 519 based on Foata normal form. 441/14054 useless extension candidates. Maximal degree in co-relation 38233. Up to 1440 conditions per place. [2022-11-20 11:26:16,910 INFO L137 encePairwiseOnDemand]: 249/262 looper letters, 194 selfloop transitions, 124 changer transitions 5/600 dead transitions. [2022-11-20 11:26:16,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 600 transitions, 6689 flow [2022-11-20 11:26:16,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:26:16,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 11:26:16,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2260 transitions. [2022-11-20 11:26:16,915 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8625954198473282 [2022-11-20 11:26:16,915 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2260 transitions. [2022-11-20 11:26:16,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2260 transitions. [2022-11-20 11:26:16,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:26:16,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2260 transitions. [2022-11-20 11:26:16,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 226.0) internal successors, (2260), 10 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states 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 11:26:16,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states 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 11:26:16,925 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states 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 11:26:16,926 INFO L175 Difference]: Start difference. First operand has 409 places, 506 transitions, 5284 flow. Second operand 10 states and 2260 transitions. [2022-11-20 11:26:16,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 600 transitions, 6689 flow [2022-11-20 11:26:17,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 600 transitions, 6483 flow, removed 18 selfloop flow, removed 4 redundant places. [2022-11-20 11:26:17,235 INFO L231 Difference]: Finished difference. Result has 418 places, 522 transitions, 5830 flow [2022-11-20 11:26:17,235 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=5110, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5830, PETRI_PLACES=418, PETRI_TRANSITIONS=522} [2022-11-20 11:26:17,236 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 181 predicate places. [2022-11-20 11:26:17,236 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 522 transitions, 5830 flow [2022-11-20 11:26:17,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states 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 11:26:17,237 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:26:17,237 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:17,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 11:26:17,238 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:26:17,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:17,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1425564946, now seen corresponding path program 11 times [2022-11-20 11:26:17,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:17,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776186873] [2022-11-20 11:26:17,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:17,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:17,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:17,726 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-20 11:26:17,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:17,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776186873] [2022-11-20 11:26:17,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776186873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:17,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:17,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:26:17,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900659183] [2022-11-20 11:26:17,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:17,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:26:17,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:17,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:26:17,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:26:17,730 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-20 11:26:17,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 522 transitions, 5830 flow. Second operand has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states 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 11:26:17,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:26:17,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-20 11:26:17,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:26:23,045 INFO L130 PetriNetUnfolder]: 2307/14336 cut-off events. [2022-11-20 11:26:23,045 INFO L131 PetriNetUnfolder]: For 102794/104568 co-relation queries the response was YES. [2022-11-20 11:26:23,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40983 conditions, 14336 events. 2307/14336 cut-off events. For 102794/104568 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 164827 event pairs, 461 based on Foata normal form. 690/14842 useless extension candidates. Maximal degree in co-relation 40897. Up to 1376 conditions per place. [2022-11-20 11:26:23,280 INFO L137 encePairwiseOnDemand]: 244/262 looper letters, 156 selfloop transitions, 172 changer transitions 10/615 dead transitions. [2022-11-20 11:26:23,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 615 transitions, 7230 flow [2022-11-20 11:26:23,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:26:23,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 11:26:23,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2926 transitions. [2022-11-20 11:26:23,285 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8590722254844392 [2022-11-20 11:26:23,285 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2926 transitions. [2022-11-20 11:26:23,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2926 transitions. [2022-11-20 11:26:23,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:26:23,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2926 transitions. [2022-11-20 11:26:23,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 225.07692307692307) internal successors, (2926), 13 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states 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 11:26:23,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 262.0) internal successors, (3668), 14 states have internal predecessors, (3668), 0 states have call successors, (0), 0 states 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 11:26:23,296 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 262.0) internal successors, (3668), 14 states have internal predecessors, (3668), 0 states have call successors, (0), 0 states 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 11:26:23,297 INFO L175 Difference]: Start difference. First operand has 418 places, 522 transitions, 5830 flow. Second operand 13 states and 2926 transitions. [2022-11-20 11:26:23,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 615 transitions, 7230 flow [2022-11-20 11:26:23,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 615 transitions, 7118 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-11-20 11:26:23,679 INFO L231 Difference]: Finished difference. Result has 435 places, 541 transitions, 6658 flow [2022-11-20 11:26:23,680 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=5682, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6658, PETRI_PLACES=435, PETRI_TRANSITIONS=541} [2022-11-20 11:26:23,681 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 198 predicate places. [2022-11-20 11:26:23,681 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 541 transitions, 6658 flow [2022-11-20 11:26:23,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states 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 11:26:23,681 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:26:23,681 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:23,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 11:26:23,682 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:26:23,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:23,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1280825750, now seen corresponding path program 12 times [2022-11-20 11:26:23,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:23,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311434714] [2022-11-20 11:26:23,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:23,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:24,125 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-20 11:26:24,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:24,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311434714] [2022-11-20 11:26:24,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311434714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:24,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:24,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:26:24,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261496882] [2022-11-20 11:26:24,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:24,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:26:24,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:24,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:26:24,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:26:24,130 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-20 11:26:24,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 541 transitions, 6658 flow. Second operand has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states 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 11:26:24,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:26:24,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-20 11:26:24,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:26:29,564 INFO L130 PetriNetUnfolder]: 2276/14213 cut-off events. [2022-11-20 11:26:29,564 INFO L131 PetriNetUnfolder]: For 117641/119537 co-relation queries the response was YES. [2022-11-20 11:26:29,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42762 conditions, 14213 events. 2276/14213 cut-off events. For 117641/119537 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 162931 event pairs, 451 based on Foata normal form. 580/14617 useless extension candidates. Maximal degree in co-relation 42669. Up to 1586 conditions per place. [2022-11-20 11:26:29,843 INFO L137 encePairwiseOnDemand]: 245/262 looper letters, 162 selfloop transitions, 155 changer transitions 10/604 dead transitions. [2022-11-20 11:26:29,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 604 transitions, 7767 flow [2022-11-20 11:26:29,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:26:29,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 11:26:29,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2469 transitions. [2022-11-20 11:26:29,847 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8566967383761277 [2022-11-20 11:26:29,847 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2469 transitions. [2022-11-20 11:26:29,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2469 transitions. [2022-11-20 11:26:29,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:26:29,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2469 transitions. [2022-11-20 11:26:29,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 224.45454545454547) internal successors, (2469), 11 states have internal predecessors, (2469), 0 states have call successors, (0), 0 states 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 11:26:29,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 262.0) internal successors, (3144), 12 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states 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 11:26:29,857 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 262.0) internal successors, (3144), 12 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states 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 11:26:29,857 INFO L175 Difference]: Start difference. First operand has 435 places, 541 transitions, 6658 flow. Second operand 11 states and 2469 transitions. [2022-11-20 11:26:29,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 604 transitions, 7767 flow [2022-11-20 11:26:30,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 604 transitions, 7622 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-11-20 11:26:30,344 INFO L231 Difference]: Finished difference. Result has 443 places, 551 transitions, 7094 flow [2022-11-20 11:26:30,345 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=6497, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7094, PETRI_PLACES=443, PETRI_TRANSITIONS=551} [2022-11-20 11:26:30,345 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 206 predicate places. [2022-11-20 11:26:30,345 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 551 transitions, 7094 flow [2022-11-20 11:26:30,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states 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 11:26:30,346 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:26:30,346 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:30,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 11:26:30,348 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:26:30,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:30,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1800558424, now seen corresponding path program 13 times [2022-11-20 11:26:30,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:30,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343241397] [2022-11-20 11:26:30,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:30,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:30,939 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-20 11:26:30,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:30,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343241397] [2022-11-20 11:26:30,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343241397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:30,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:30,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:26:30,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463690969] [2022-11-20 11:26:30,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:30,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:26:30,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:30,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:26:30,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:26:30,945 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-20 11:26:30,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 551 transitions, 7094 flow. Second operand has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states 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 11:26:30,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:26:30,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-20 11:26:30,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:26:36,353 INFO L130 PetriNetUnfolder]: 2306/14719 cut-off events. [2022-11-20 11:26:36,353 INFO L131 PetriNetUnfolder]: For 133400/135208 co-relation queries the response was YES. [2022-11-20 11:26:36,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44268 conditions, 14719 events. 2306/14719 cut-off events. For 133400/135208 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 170349 event pairs, 458 based on Foata normal form. 583/15134 useless extension candidates. Maximal degree in co-relation 44172. Up to 2641 conditions per place. [2022-11-20 11:26:36,639 INFO L137 encePairwiseOnDemand]: 247/262 looper letters, 187 selfloop transitions, 143 changer transitions 8/615 dead transitions. [2022-11-20 11:26:36,639 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 615 transitions, 8465 flow [2022-11-20 11:26:36,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:26:36,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:26:36,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2005 transitions. [2022-11-20 11:26:36,643 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8502968617472434 [2022-11-20 11:26:36,643 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2005 transitions. [2022-11-20 11:26:36,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2005 transitions. [2022-11-20 11:26:36,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:26:36,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2005 transitions. [2022-11-20 11:26:36,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 222.77777777777777) internal successors, (2005), 9 states have internal predecessors, (2005), 0 states have call successors, (0), 0 states 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 11:26:36,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 262.0) internal successors, (2620), 10 states have internal predecessors, (2620), 0 states have call successors, (0), 0 states 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 11:26:36,652 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 262.0) internal successors, (2620), 10 states have internal predecessors, (2620), 0 states have call successors, (0), 0 states 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 11:26:36,652 INFO L175 Difference]: Start difference. First operand has 443 places, 551 transitions, 7094 flow. Second operand 9 states and 2005 transitions. [2022-11-20 11:26:36,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 615 transitions, 8465 flow [2022-11-20 11:26:37,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 615 transitions, 8342 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-20 11:26:37,114 INFO L231 Difference]: Finished difference. Result has 449 places, 570 transitions, 7785 flow [2022-11-20 11:26:37,115 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=6979, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7785, PETRI_PLACES=449, PETRI_TRANSITIONS=570} [2022-11-20 11:26:37,115 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, 212 predicate places. [2022-11-20 11:26:37,115 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 570 transitions, 7785 flow [2022-11-20 11:26:37,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states 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 11:26:37,116 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:26:37,116 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:37,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 11:26:37,117 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:26:37,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:37,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1727089642, now seen corresponding path program 14 times [2022-11-20 11:26:37,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:37,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312400424] [2022-11-20 11:26:37,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:37,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:37,591 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-20 11:26:37,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:37,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312400424] [2022-11-20 11:26:37,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312400424] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:37,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:37,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:26:37,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932381222] [2022-11-20 11:26:37,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:37,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:26:37,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:37,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:26:37,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:26:37,598 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 262 [2022-11-20 11:26:37,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 570 transitions, 7785 flow. Second operand has 7 states, 7 states have (on average 216.14285714285714) internal successors, (1513), 7 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states 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 11:26:37,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:26:37,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 262 [2022-11-20 11:26:37,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand