./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_9cf24896-4506-465c-8539-24b9ee6d3ec3/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf24896-4506-465c-8539-24b9ee6d3ec3/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf24896-4506-465c-8539-24b9ee6d3ec3/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf24896-4506-465c-8539-24b9ee6d3ec3/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf24896-4506-465c-8539-24b9ee6d3ec3/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf24896-4506-465c-8539-24b9ee6d3ec3/bin/uautomizer-QkZJyEgLgS --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 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 --- 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-4e7fbc6 [2022-11-23 03:23:11,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:23:11,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:23:11,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:23:11,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:23:11,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:23:11,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:23:11,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:23:11,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:23:11,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:23:11,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:23:11,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:23:11,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:23:11,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:23:11,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:23:11,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:23:11,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:23:11,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:23:11,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:23:11,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:23:11,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:23:11,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:23:11,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:23:11,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:23:11,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:23:11,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:23:11,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:23:11,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:23:11,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:23:11,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:23:11,601 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:23:11,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:23:11,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:23:11,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:23:11,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:23:11,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:23:11,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:23:11,610 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:23:11,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:23:11,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:23:11,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:23:11,614 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf24896-4506-465c-8539-24b9ee6d3ec3/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 03:23:11,674 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:23:11,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:23:11,675 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:23:11,675 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:23:11,676 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:23:11,676 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:23:11,677 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:23:11,677 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:23:11,678 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:23:11,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:23:11,678 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:23:11,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:23:11,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:23:11,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:23:11,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:23:11,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:23:11,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:23:11,680 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:23:11,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:23:11,681 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:23:11,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:23:11,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:23:11,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:23:11,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:23:11,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:23:11,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:23:11,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:23:11,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:23:11,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:23:11,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:23:11,684 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:23:11,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:23:11,685 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:23:11,685 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:23:11,685 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_9cf24896-4506-465c-8539-24b9ee6d3ec3/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf24896-4506-465c-8539-24b9ee6d3ec3/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 [2022-11-23 03:23:11,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:23:12,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:23:12,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:23:12,032 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:23:12,033 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:23:12,035 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf24896-4506-465c-8539-24b9ee6d3ec3/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-11-23 03:23:15,800 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:23:16,119 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:23:16,120 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf24896-4506-465c-8539-24b9ee6d3ec3/sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-11-23 03:23:16,136 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf24896-4506-465c-8539-24b9ee6d3ec3/bin/uautomizer-QkZJyEgLgS/data/deacb1004/9fa3ecb15e2d4e3a95f31dee0a239ce2/FLAG438b4d4e6 [2022-11-23 03:23:16,154 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf24896-4506-465c-8539-24b9ee6d3ec3/bin/uautomizer-QkZJyEgLgS/data/deacb1004/9fa3ecb15e2d4e3a95f31dee0a239ce2 [2022-11-23 03:23:16,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:23:16,160 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:23:16,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:23:16,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:23:16,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:23:16,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:23:16" (1/1) ... [2022-11-23 03:23:16,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3892169d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:16, skipping insertion in model container [2022-11-23 03:23:16,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:23:16" (1/1) ... [2022-11-23 03:23:16,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:23:16,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:23:16,540 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_9cf24896-4506-465c-8539-24b9ee6d3ec3/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2022-11-23 03:23:16,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:23:16,576 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:23:16,638 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_9cf24896-4506-465c-8539-24b9ee6d3ec3/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2022-11-23 03:23:16,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:23:16,678 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:23:16,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:16 WrapperNode [2022-11-23 03:23:16,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:23:16,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:23:16,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:23:16,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:23:16,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:16" (1/1) ... [2022-11-23 03:23:16,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:16" (1/1) ... [2022-11-23 03:23:16,814 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 413 [2022-11-23 03:23:16,815 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:23:16,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:23:16,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:23:16,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:23:16,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:16" (1/1) ... [2022-11-23 03:23:16,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:16" (1/1) ... [2022-11-23 03:23:16,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:16" (1/1) ... [2022-11-23 03:23:16,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:16" (1/1) ... [2022-11-23 03:23:16,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:16" (1/1) ... [2022-11-23 03:23:16,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:16" (1/1) ... [2022-11-23 03:23:16,917 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:16" (1/1) ... [2022-11-23 03:23:16,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:16" (1/1) ... [2022-11-23 03:23:16,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:23:16,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:23:16,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:23:16,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:23:16,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:16" (1/1) ... [2022-11-23 03:23:16,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:23:16,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf24896-4506-465c-8539-24b9ee6d3ec3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:23:16,980 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf24896-4506-465c-8539-24b9ee6d3ec3/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:23:16,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf24896-4506-465c-8539-24b9ee6d3ec3/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:23:17,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:23:17,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 03:23:17,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 03:23:17,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 03:23:17,032 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-23 03:23:17,032 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-23 03:23:17,040 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-23 03:23:17,040 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-23 03:23:17,040 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-23 03:23:17,041 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-23 03:23:17,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:23:17,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 03:23:17,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:23:17,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:23:17,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 03:23:17,044 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 03:23:17,208 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:23:17,211 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:23:18,144 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:23:18,176 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:23:18,176 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-23 03:23:18,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:23:18 BoogieIcfgContainer [2022-11-23 03:23:18,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:23:18,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:23:18,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:23:18,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:23:18,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:23:16" (1/3) ... [2022-11-23 03:23:18,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5704d8ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:23:18, skipping insertion in model container [2022-11-23 03:23:18,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:16" (2/3) ... [2022-11-23 03:23:18,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5704d8ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:23:18, skipping insertion in model container [2022-11-23 03:23:18,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:23:18" (3/3) ... [2022-11-23 03:23:18,198 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2022-11-23 03:23:18,210 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 03:23:18,224 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:23:18,224 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 03:23:18,224 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 03:23:18,397 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-23 03:23:18,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 513 places, 544 transitions, 1112 flow [2022-11-23 03:23:18,754 INFO L130 PetriNetUnfolder]: 41/541 cut-off events. [2022-11-23 03:23:18,755 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 03:23:18,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 541 events. 41/541 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 690 event pairs, 0 based on Foata normal form. 0/499 useless extension candidates. Maximal degree in co-relation 459. Up to 2 conditions per place. [2022-11-23 03:23:18,769 INFO L82 GeneralOperation]: Start removeDead. Operand has 513 places, 544 transitions, 1112 flow [2022-11-23 03:23:18,785 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 499 places, 530 transitions, 1078 flow [2022-11-23 03:23:18,790 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 03:23:18,826 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 499 places, 530 transitions, 1078 flow [2022-11-23 03:23:18,838 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 499 places, 530 transitions, 1078 flow [2022-11-23 03:23:18,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 499 places, 530 transitions, 1078 flow [2022-11-23 03:23:19,084 INFO L130 PetriNetUnfolder]: 41/530 cut-off events. [2022-11-23 03:23:19,084 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 03:23:19,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 530 events. 41/530 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 691 event pairs, 0 based on Foata normal form. 0/489 useless extension candidates. Maximal degree in co-relation 459. Up to 2 conditions per place. [2022-11-23 03:23:19,104 INFO L119 LiptonReduction]: Number of co-enabled transitions 21384 [2022-11-23 03:23:49,931 INFO L134 LiptonReduction]: Checked pairs total: 22479 [2022-11-23 03:23:49,932 INFO L136 LiptonReduction]: Total number of compositions: 610 [2022-11-23 03:23:49,951 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:23:49,959 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;@4cb7e1c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:23:49,959 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-23 03:23:49,971 INFO L130 PetriNetUnfolder]: 10/41 cut-off events. [2022-11-23 03:23:49,971 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 03:23:49,972 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:23:49,973 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] [2022-11-23 03:23:49,973 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:23:49,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:23:49,980 INFO L85 PathProgramCache]: Analyzing trace with hash 485326457, now seen corresponding path program 1 times [2022-11-23 03:23:49,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:23:49,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924307770] [2022-11-23 03:23:49,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:23:49,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:23:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:50,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:23:50,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:23:50,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924307770] [2022-11-23 03:23:50,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924307770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:23:50,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:23:50,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:23:50,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431296782] [2022-11-23 03:23:50,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:23:50,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:23:50,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:23:50,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:23:50,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:23:50,668 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 501 out of 1154 [2022-11-23 03:23:50,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 510.3333333333333) internal successors, (1531), 3 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:50,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:23:50,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 501 of 1154 [2022-11-23 03:23:50,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:23:51,113 INFO L130 PetriNetUnfolder]: 835/1228 cut-off events. [2022-11-23 03:23:51,113 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2022-11-23 03:23:51,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2608 conditions, 1228 events. 835/1228 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4517 event pairs, 477 based on Foata normal form. 0/1030 useless extension candidates. Maximal degree in co-relation 2392. Up to 913 conditions per place. [2022-11-23 03:23:51,123 INFO L137 encePairwiseOnDemand]: 1150/1154 looper letters, 54 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2022-11-23 03:23:51,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 252 flow [2022-11-23 03:23:51,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:23:51,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:23:51,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1561 transitions. [2022-11-23 03:23:51,151 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.450895436164067 [2022-11-23 03:23:51,152 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1561 transitions. [2022-11-23 03:23:51,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1561 transitions. [2022-11-23 03:23:51,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:23:51,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1561 transitions. [2022-11-23 03:23:51,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 520.3333333333334) internal successors, (1561), 3 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:51,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1154.0) internal successors, (4616), 4 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:51,192 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1154.0) internal successors, (4616), 4 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:51,195 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 102 flow. Second operand 3 states and 1561 transitions. [2022-11-23 03:23:51,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 252 flow [2022-11-23 03:23:51,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 57 transitions, 236 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-23 03:23:51,207 INFO L231 Difference]: Finished difference. Result has 40 places, 43 transitions, 108 flow [2022-11-23 03:23:51,210 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1154, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=40, PETRI_TRANSITIONS=43} [2022-11-23 03:23:51,215 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -2 predicate places. [2022-11-23 03:23:51,215 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 43 transitions, 108 flow [2022-11-23 03:23:51,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 510.3333333333333) internal successors, (1531), 3 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:51,217 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:23:51,218 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] [2022-11-23 03:23:51,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 03:23:51,220 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:23:51,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:23:51,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1600070657, now seen corresponding path program 1 times [2022-11-23 03:23:51,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:23:51,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308739549] [2022-11-23 03:23:51,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:23:51,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:23:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:51,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:23:51,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:23:51,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308739549] [2022-11-23 03:23:51,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308739549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:23:51,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:23:51,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:23:51,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216967777] [2022-11-23 03:23:51,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:23:51,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:23:51,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:23:51,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:23:51,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:23:51,515 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 501 out of 1154 [2022-11-23 03:23:51,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 43 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 510.6666666666667) internal successors, (1532), 3 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:51,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:23:51,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 501 of 1154 [2022-11-23 03:23:51,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:23:51,969 INFO L130 PetriNetUnfolder]: 943/1388 cut-off events. [2022-11-23 03:23:51,969 INFO L131 PetriNetUnfolder]: For 520/520 co-relation queries the response was YES. [2022-11-23 03:23:51,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3253 conditions, 1388 events. 943/1388 cut-off events. For 520/520 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5061 event pairs, 541 based on Foata normal form. 0/1278 useless extension candidates. Maximal degree in co-relation 2065. Up to 1017 conditions per place. [2022-11-23 03:23:51,978 INFO L137 encePairwiseOnDemand]: 1150/1154 looper letters, 56 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2022-11-23 03:23:51,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 59 transitions, 276 flow [2022-11-23 03:23:51,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:23:51,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:23:51,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1561 transitions. [2022-11-23 03:23:51,985 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.450895436164067 [2022-11-23 03:23:51,985 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1561 transitions. [2022-11-23 03:23:51,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1561 transitions. [2022-11-23 03:23:51,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:23:51,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1561 transitions. [2022-11-23 03:23:51,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 520.3333333333334) internal successors, (1561), 3 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:52,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1154.0) internal successors, (4616), 4 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:52,004 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1154.0) internal successors, (4616), 4 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:52,004 INFO L175 Difference]: Start difference. First operand has 40 places, 43 transitions, 108 flow. Second operand 3 states and 1561 transitions. [2022-11-23 03:23:52,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 59 transitions, 276 flow [2022-11-23 03:23:52,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 59 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 03:23:52,009 INFO L231 Difference]: Finished difference. Result has 42 places, 44 transitions, 120 flow [2022-11-23 03:23:52,009 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1154, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=42, PETRI_TRANSITIONS=44} [2022-11-23 03:23:52,010 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2022-11-23 03:23:52,011 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 44 transitions, 120 flow [2022-11-23 03:23:52,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 510.6666666666667) internal successors, (1532), 3 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:52,013 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:23:52,013 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] [2022-11-23 03:23:52,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 03:23:52,014 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:23:52,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:23:52,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1092880384, now seen corresponding path program 1 times [2022-11-23 03:23:52,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:23:52,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596197390] [2022-11-23 03:23:52,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:23:52,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:23:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:52,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:23:52,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:23:52,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596197390] [2022-11-23 03:23:52,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596197390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:23:52,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:23:52,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:23:52,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505259587] [2022-11-23 03:23:52,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:23:52,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:23:52,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:23:52,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:23:52,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:23:52,446 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 494 out of 1154 [2022-11-23 03:23:52,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 44 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 504.0) internal successors, (1512), 3 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:52,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:23:52,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 494 of 1154 [2022-11-23 03:23:52,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:23:52,817 INFO L130 PetriNetUnfolder]: 943/1389 cut-off events. [2022-11-23 03:23:52,817 INFO L131 PetriNetUnfolder]: For 390/390 co-relation queries the response was YES. [2022-11-23 03:23:52,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3522 conditions, 1389 events. 943/1389 cut-off events. For 390/390 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5038 event pairs, 733 based on Foata normal form. 0/1333 useless extension candidates. Maximal degree in co-relation 2229. Up to 1389 conditions per place. [2022-11-23 03:23:52,828 INFO L137 encePairwiseOnDemand]: 1151/1154 looper letters, 43 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2022-11-23 03:23:52,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 45 transitions, 212 flow [2022-11-23 03:23:52,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:23:52,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:23:52,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1526 transitions. [2022-11-23 03:23:52,834 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44078567302137495 [2022-11-23 03:23:52,834 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1526 transitions. [2022-11-23 03:23:52,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1526 transitions. [2022-11-23 03:23:52,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:23:52,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1526 transitions. [2022-11-23 03:23:52,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 508.6666666666667) internal successors, (1526), 3 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:52,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1154.0) internal successors, (4616), 4 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:52,852 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1154.0) internal successors, (4616), 4 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:52,853 INFO L175 Difference]: Start difference. First operand has 42 places, 44 transitions, 120 flow. Second operand 3 states and 1526 transitions. [2022-11-23 03:23:52,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 45 transitions, 212 flow [2022-11-23 03:23:52,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 03:23:52,863 INFO L231 Difference]: Finished difference. Result has 43 places, 45 transitions, 126 flow [2022-11-23 03:23:52,864 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1154, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=43, PETRI_TRANSITIONS=45} [2022-11-23 03:23:52,865 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2022-11-23 03:23:52,865 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 45 transitions, 126 flow [2022-11-23 03:23:52,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 504.0) internal successors, (1512), 3 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:52,867 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:23:52,867 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] [2022-11-23 03:23:52,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 03:23:52,868 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:23:52,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:23:52,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1569018855, now seen corresponding path program 1 times [2022-11-23 03:23:52,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:23:52,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259835121] [2022-11-23 03:23:52,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:23:52,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:23:52,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:53,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:23:53,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:23:53,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259835121] [2022-11-23 03:23:53,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259835121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:23:53,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:23:53,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:23:53,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627770249] [2022-11-23 03:23:53,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:23:53,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:23:53,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:23:53,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:23:53,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:23:53,251 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 494 out of 1154 [2022-11-23 03:23:53,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 501.75) internal successors, (2007), 4 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:53,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:23:53,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 494 of 1154 [2022-11-23 03:23:53,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:23:53,708 INFO L130 PetriNetUnfolder]: 943/1390 cut-off events. [2022-11-23 03:23:53,708 INFO L131 PetriNetUnfolder]: For 239/239 co-relation queries the response was YES. [2022-11-23 03:23:53,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3374 conditions, 1390 events. 943/1390 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5038 event pairs, 733 based on Foata normal form. 0/1282 useless extension candidates. Maximal degree in co-relation 3361. Up to 1388 conditions per place. [2022-11-23 03:23:53,719 INFO L137 encePairwiseOnDemand]: 1149/1154 looper letters, 42 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2022-11-23 03:23:53,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 220 flow [2022-11-23 03:23:53,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:23:53,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 03:23:53,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2021 transitions. [2022-11-23 03:23:53,728 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4378249566724437 [2022-11-23 03:23:53,729 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2021 transitions. [2022-11-23 03:23:53,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2021 transitions. [2022-11-23 03:23:53,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:23:53,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2021 transitions. [2022-11-23 03:23:53,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 505.25) internal successors, (2021), 4 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:53,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1154.0) internal successors, (5770), 5 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:53,757 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1154.0) internal successors, (5770), 5 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:53,757 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 126 flow. Second operand 4 states and 2021 transitions. [2022-11-23 03:23:53,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 220 flow [2022-11-23 03:23:53,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 216 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-23 03:23:53,763 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 140 flow [2022-11-23 03:23:53,764 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1154, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2022-11-23 03:23:53,765 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2022-11-23 03:23:53,765 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 140 flow [2022-11-23 03:23:53,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 501.75) internal successors, (2007), 4 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:53,768 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:23:53,768 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] [2022-11-23 03:23:53,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 03:23:53,769 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:23:53,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:23:53,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1250567303, now seen corresponding path program 1 times [2022-11-23 03:23:53,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:23:53,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288938061] [2022-11-23 03:23:53,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:23:53,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:23:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:54,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 03:23:54,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:23:54,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288938061] [2022-11-23 03:23:54,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288938061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:23:54,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:23:54,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:23:54,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944401434] [2022-11-23 03:23:54,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:23:54,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:23:54,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:23:54,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:23:54,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:23:54,238 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 494 out of 1154 [2022-11-23 03:23:54,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 502.0) internal successors, (2008), 4 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:54,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:23:54,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 494 of 1154 [2022-11-23 03:23:54,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:23:54,633 INFO L130 PetriNetUnfolder]: 943/1391 cut-off events. [2022-11-23 03:23:54,633 INFO L131 PetriNetUnfolder]: For 236/236 co-relation queries the response was YES. [2022-11-23 03:23:54,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3383 conditions, 1391 events. 943/1391 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5034 event pairs, 733 based on Foata normal form. 0/1284 useless extension candidates. Maximal degree in co-relation 3361. Up to 1390 conditions per place. [2022-11-23 03:23:54,643 INFO L137 encePairwiseOnDemand]: 1150/1154 looper letters, 44 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2022-11-23 03:23:54,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 47 transitions, 236 flow [2022-11-23 03:23:54,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:23:54,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 03:23:54,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2020 transitions. [2022-11-23 03:23:54,653 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4376083188908146 [2022-11-23 03:23:54,653 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2020 transitions. [2022-11-23 03:23:54,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2020 transitions. [2022-11-23 03:23:54,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:23:54,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2020 transitions. [2022-11-23 03:23:54,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:54,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1154.0) internal successors, (5770), 5 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:54,675 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1154.0) internal successors, (5770), 5 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:54,676 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 140 flow. Second operand 4 states and 2020 transitions. [2022-11-23 03:23:54,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 47 transitions, 236 flow [2022-11-23 03:23:54,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 47 transitions, 235 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 03:23:54,681 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 153 flow [2022-11-23 03:23:54,682 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1154, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2022-11-23 03:23:54,685 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2022-11-23 03:23:54,685 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 153 flow [2022-11-23 03:23:54,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 502.0) internal successors, (2008), 4 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:54,687 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:23:54,687 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] [2022-11-23 03:23:54,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 03:23:54,688 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:23:54,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:23:54,688 INFO L85 PathProgramCache]: Analyzing trace with hash 754751408, now seen corresponding path program 1 times [2022-11-23 03:23:54,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:23:54,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769542838] [2022-11-23 03:23:54,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:23:54,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:23:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:54,924 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 03:23:54,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:23:54,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769542838] [2022-11-23 03:23:54,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769542838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:23:54,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:23:54,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:23:54,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228998021] [2022-11-23 03:23:54,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:23:54,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:23:54,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:23:54,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:23:54,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:23:55,079 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 494 out of 1154 [2022-11-23 03:23:55,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 502.25) internal successors, (2009), 4 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:55,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:23:55,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 494 of 1154 [2022-11-23 03:23:55,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:23:55,492 INFO L130 PetriNetUnfolder]: 943/1392 cut-off events. [2022-11-23 03:23:55,492 INFO L131 PetriNetUnfolder]: For 237/237 co-relation queries the response was YES. [2022-11-23 03:23:55,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3392 conditions, 1392 events. 943/1392 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5034 event pairs, 733 based on Foata normal form. 0/1286 useless extension candidates. Maximal degree in co-relation 3368. Up to 1391 conditions per place. [2022-11-23 03:23:55,503 INFO L137 encePairwiseOnDemand]: 1150/1154 looper letters, 45 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2022-11-23 03:23:55,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 48 transitions, 251 flow [2022-11-23 03:23:55,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:23:55,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 03:23:55,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2020 transitions. [2022-11-23 03:23:55,511 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4376083188908146 [2022-11-23 03:23:55,511 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2020 transitions. [2022-11-23 03:23:55,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2020 transitions. [2022-11-23 03:23:55,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:23:55,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2020 transitions. [2022-11-23 03:23:55,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:55,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1154.0) internal successors, (5770), 5 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:55,534 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1154.0) internal successors, (5770), 5 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:55,534 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 153 flow. Second operand 4 states and 2020 transitions. [2022-11-23 03:23:55,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 48 transitions, 251 flow [2022-11-23 03:23:55,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 48 transitions, 245 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-23 03:23:55,543 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 161 flow [2022-11-23 03:23:55,543 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1154, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2022-11-23 03:23:55,544 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2022-11-23 03:23:55,544 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 161 flow [2022-11-23 03:23:55,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 502.25) internal successors, (2009), 4 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:55,546 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:23:55,546 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] [2022-11-23 03:23:55,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 03:23:55,547 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:23:55,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:23:55,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1547928116, now seen corresponding path program 1 times [2022-11-23 03:23:55,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:23:55,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937285848] [2022-11-23 03:23:55,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:23:55,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:23:55,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:55,800 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 03:23:55,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:23:55,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937285848] [2022-11-23 03:23:55,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937285848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:23:55,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:23:55,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:23:55,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592081623] [2022-11-23 03:23:55,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:23:55,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:23:55,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:23:55,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:23:55,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:23:55,940 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 494 out of 1154 [2022-11-23 03:23:55,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 502.5) internal successors, (2010), 4 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:55,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:23:55,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 494 of 1154 [2022-11-23 03:23:55,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:23:56,339 INFO L130 PetriNetUnfolder]: 943/1393 cut-off events. [2022-11-23 03:23:56,340 INFO L131 PetriNetUnfolder]: For 239/239 co-relation queries the response was YES. [2022-11-23 03:23:56,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3398 conditions, 1393 events. 943/1393 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5034 event pairs, 733 based on Foata normal form. 0/1288 useless extension candidates. Maximal degree in co-relation 3373. Up to 1392 conditions per place. [2022-11-23 03:23:56,350 INFO L137 encePairwiseOnDemand]: 1150/1154 looper letters, 46 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2022-11-23 03:23:56,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 49 transitions, 261 flow [2022-11-23 03:23:56,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:23:56,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 03:23:56,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2020 transitions. [2022-11-23 03:23:56,357 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4376083188908146 [2022-11-23 03:23:56,358 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2020 transitions. [2022-11-23 03:23:56,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2020 transitions. [2022-11-23 03:23:56,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:23:56,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2020 transitions. [2022-11-23 03:23:56,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:56,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1154.0) internal successors, (5770), 5 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:56,377 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1154.0) internal successors, (5770), 5 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:56,377 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 161 flow. Second operand 4 states and 2020 transitions. [2022-11-23 03:23:56,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 49 transitions, 261 flow [2022-11-23 03:23:56,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 49 transitions, 255 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-23 03:23:56,386 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 169 flow [2022-11-23 03:23:56,386 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1154, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2022-11-23 03:23:56,388 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2022-11-23 03:23:56,388 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 169 flow [2022-11-23 03:23:56,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 502.5) internal successors, (2010), 4 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:56,389 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:23:56,390 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] [2022-11-23 03:23:56,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 03:23:56,390 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:23:56,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:23:56,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1628191839, now seen corresponding path program 1 times [2022-11-23 03:23:56,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:23:56,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587245830] [2022-11-23 03:23:56,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:23:56,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:23:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:56,957 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 03:23:56,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:23:56,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587245830] [2022-11-23 03:23:56,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587245830] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:23:56,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6252578] [2022-11-23 03:23:56,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:23:56,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:23:56,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf24896-4506-465c-8539-24b9ee6d3ec3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:23:56,967 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf24896-4506-465c-8539-24b9ee6d3ec3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:23:57,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf24896-4506-465c-8539-24b9ee6d3ec3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 03:23:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:23:57,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 03:23:57,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:23:57,432 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 03:23:57,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:23:57,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6252578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:23:57,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:23:57,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-23 03:23:57,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111849167] [2022-11-23 03:23:57,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:23:57,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:23:57,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:23:57,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:23:57,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:23:57,581 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 494 out of 1154 [2022-11-23 03:23:57,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 502.75) internal successors, (2011), 4 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:57,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:23:57,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 494 of 1154 [2022-11-23 03:23:57,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:23:57,995 INFO L130 PetriNetUnfolder]: 943/1394 cut-off events. [2022-11-23 03:23:57,995 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2022-11-23 03:23:57,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3404 conditions, 1394 events. 943/1394 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5034 event pairs, 733 based on Foata normal form. 0/1290 useless extension candidates. Maximal degree in co-relation 3378. Up to 1393 conditions per place. [2022-11-23 03:23:58,007 INFO L137 encePairwiseOnDemand]: 1150/1154 looper letters, 47 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2022-11-23 03:23:58,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 50 transitions, 271 flow [2022-11-23 03:23:58,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:23:58,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 03:23:58,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2020 transitions. [2022-11-23 03:23:58,015 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4376083188908146 [2022-11-23 03:23:58,015 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2020 transitions. [2022-11-23 03:23:58,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2020 transitions. [2022-11-23 03:23:58,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:23:58,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2020 transitions. [2022-11-23 03:23:58,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:58,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1154.0) internal successors, (5770), 5 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:58,033 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1154.0) internal successors, (5770), 5 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:58,034 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 169 flow. Second operand 4 states and 2020 transitions. [2022-11-23 03:23:58,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 50 transitions, 271 flow [2022-11-23 03:23:58,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 50 transitions, 265 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-23 03:23:58,038 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 177 flow [2022-11-23 03:23:58,039 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1154, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2022-11-23 03:23:58,042 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2022-11-23 03:23:58,042 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 177 flow [2022-11-23 03:23:58,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 502.75) internal successors, (2011), 4 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:23:58,044 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:23:58,044 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] [2022-11-23 03:23:58,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf24896-4506-465c-8539-24b9ee6d3ec3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 03:23:58,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf24896-4506-465c-8539-24b9ee6d3ec3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:23:58,253 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:23:58,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:23:58,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1714052197, now seen corresponding path program 1 times [2022-11-23 03:23:58,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:23:58,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719991758] [2022-11-23 03:23:58,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:23:58,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:23:58,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:24:02,294 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 03:24:02,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:24:02,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719991758] [2022-11-23 03:24:02,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719991758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:24:02,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:24:02,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 03:24:02,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995998029] [2022-11-23 03:24:02,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:24:02,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 03:24:02,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:24:02,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 03:24:02,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-23 03:24:05,452 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 455 out of 1154 [2022-11-23 03:24:05,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 177 flow. Second operand has 13 states, 13 states have (on average 457.7692307692308) internal successors, (5951), 13 states have internal predecessors, (5951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:24:05,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:24:05,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 455 of 1154 [2022-11-23 03:24:05,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:24:08,299 INFO L130 PetriNetUnfolder]: 2861/4241 cut-off events. [2022-11-23 03:24:08,299 INFO L131 PetriNetUnfolder]: For 934/934 co-relation queries the response was YES. [2022-11-23 03:24:08,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10485 conditions, 4241 events. 2861/4241 cut-off events. For 934/934 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 21224 event pairs, 397 based on Foata normal form. 1/3890 useless extension candidates. Maximal degree in co-relation 10458. Up to 1213 conditions per place. [2022-11-23 03:24:08,413 INFO L137 encePairwiseOnDemand]: 1141/1154 looper letters, 160 selfloop transitions, 12 changer transitions 7/179 dead transitions. [2022-11-23 03:24:08,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 179 transitions, 908 flow [2022-11-23 03:24:08,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 03:24:08,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-23 03:24:08,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 5623 transitions. [2022-11-23 03:24:08,433 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40605141536684 [2022-11-23 03:24:08,433 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 5623 transitions. [2022-11-23 03:24:08,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 5623 transitions. [2022-11-23 03:24:08,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:24:08,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 5623 transitions. [2022-11-23 03:24:08,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 468.5833333333333) internal successors, (5623), 12 states have internal predecessors, (5623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:24:08,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1154.0) internal successors, (15002), 13 states have internal predecessors, (15002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:24:08,485 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1154.0) internal successors, (15002), 13 states have internal predecessors, (15002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:24:08,485 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 177 flow. Second operand 12 states and 5623 transitions. [2022-11-23 03:24:08,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 179 transitions, 908 flow [2022-11-23 03:24:08,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 179 transitions, 902 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-23 03:24:08,515 INFO L231 Difference]: Finished difference. Result has 70 places, 57 transitions, 243 flow [2022-11-23 03:24:08,515 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1154, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=243, PETRI_PLACES=70, PETRI_TRANSITIONS=57} [2022-11-23 03:24:08,517 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2022-11-23 03:24:08,517 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 57 transitions, 243 flow [2022-11-23 03:24:08,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 457.7692307692308) internal successors, (5951), 13 states have internal predecessors, (5951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:24:08,520 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:24:08,520 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] [2022-11-23 03:24:08,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 03:24:08,521 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:24:08,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:24:08,521 INFO L85 PathProgramCache]: Analyzing trace with hash -561641723, now seen corresponding path program 2 times [2022-11-23 03:24:08,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:24:08,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679532414] [2022-11-23 03:24:08,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:24:08,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:24:08,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:24:12,254 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 03:24:12,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:24:12,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679532414] [2022-11-23 03:24:12,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679532414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:24:12,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:24:12,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 03:24:12,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406344767] [2022-11-23 03:24:12,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:24:12,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 03:24:12,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:24:12,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 03:24:12,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-23 03:24:15,570 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 448 out of 1154 [2022-11-23 03:24:15,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 243 flow. Second operand has 11 states, 11 states have (on average 451.27272727272725) internal successors, (4964), 11 states have internal predecessors, (4964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:24:15,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:24:15,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 448 of 1154 [2022-11-23 03:24:15,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:24:22,445 INFO L130 PetriNetUnfolder]: 6447/9903 cut-off events. [2022-11-23 03:24:22,446 INFO L131 PetriNetUnfolder]: For 6516/6516 co-relation queries the response was YES. [2022-11-23 03:24:22,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27677 conditions, 9903 events. 6447/9903 cut-off events. For 6516/6516 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 60891 event pairs, 1168 based on Foata normal form. 1/9903 useless extension candidates. Maximal degree in co-relation 27643. Up to 2981 conditions per place. [2022-11-23 03:24:22,543 INFO L137 encePairwiseOnDemand]: 1136/1154 looper letters, 193 selfloop transitions, 93 changer transitions 7/293 dead transitions. [2022-11-23 03:24:22,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 293 transitions, 1713 flow [2022-11-23 03:24:22,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-23 03:24:22,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-23 03:24:22,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 9659 transitions. [2022-11-23 03:24:22,574 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3985722538582157 [2022-11-23 03:24:22,574 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 9659 transitions. [2022-11-23 03:24:22,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 9659 transitions. [2022-11-23 03:24:22,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:24:22,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 9659 transitions. [2022-11-23 03:24:22,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 459.95238095238096) internal successors, (9659), 21 states have internal predecessors, (9659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:24:22,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 1154.0) internal successors, (25388), 22 states have internal predecessors, (25388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:24:22,654 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 1154.0) internal successors, (25388), 22 states have internal predecessors, (25388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:24:22,654 INFO L175 Difference]: Start difference. First operand has 70 places, 57 transitions, 243 flow. Second operand 21 states and 9659 transitions. [2022-11-23 03:24:22,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 293 transitions, 1713 flow [2022-11-23 03:24:22,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 293 transitions, 1668 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-23 03:24:22,801 INFO L231 Difference]: Finished difference. Result has 99 places, 157 transitions, 1088 flow [2022-11-23 03:24:22,802 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1154, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1088, PETRI_PLACES=99, PETRI_TRANSITIONS=157} [2022-11-23 03:24:22,803 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 57 predicate places. [2022-11-23 03:24:22,803 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 157 transitions, 1088 flow [2022-11-23 03:24:22,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 451.27272727272725) internal successors, (4964), 11 states have internal predecessors, (4964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:24:22,805 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:24:22,805 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] [2022-11-23 03:24:22,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 03:24:22,806 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:24:22,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:24:22,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1059657265, now seen corresponding path program 3 times [2022-11-23 03:24:22,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:24:22,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221120811] [2022-11-23 03:24:22,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:24:22,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:24:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:24:26,019 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 03:24:26,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:24:26,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221120811] [2022-11-23 03:24:26,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221120811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:24:26,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:24:26,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 03:24:26,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126369980] [2022-11-23 03:24:26,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:24:26,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 03:24:26,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:24:26,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 03:24:26,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-23 03:24:29,179 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 455 out of 1154 [2022-11-23 03:24:29,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 157 transitions, 1088 flow. Second operand has 13 states, 13 states have (on average 457.7692307692308) internal successors, (5951), 13 states have internal predecessors, (5951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:24:29,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:24:29,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 455 of 1154 [2022-11-23 03:24:29,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:24:33,620 INFO L130 PetriNetUnfolder]: 7183/11397 cut-off events. [2022-11-23 03:24:33,620 INFO L131 PetriNetUnfolder]: For 35796/35796 co-relation queries the response was YES. [2022-11-23 03:24:33,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47500 conditions, 11397 events. 7183/11397 cut-off events. For 35796/35796 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 75891 event pairs, 1794 based on Foata normal form. 1/11397 useless extension candidates. Maximal degree in co-relation 47454. Up to 5905 conditions per place. [2022-11-23 03:24:33,777 INFO L137 encePairwiseOnDemand]: 1142/1154 looper letters, 372 selfloop transitions, 22 changer transitions 7/401 dead transitions. [2022-11-23 03:24:33,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 401 transitions, 3530 flow [2022-11-23 03:24:33,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 03:24:33,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-23 03:24:33,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 5601 transitions. [2022-11-23 03:24:33,792 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40446273830155977 [2022-11-23 03:24:33,793 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 5601 transitions. [2022-11-23 03:24:33,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 5601 transitions. [2022-11-23 03:24:33,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:24:33,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 5601 transitions. [2022-11-23 03:24:33,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 466.75) internal successors, (5601), 12 states have internal predecessors, (5601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:24:33,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1154.0) internal successors, (15002), 13 states have internal predecessors, (15002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:24:33,833 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1154.0) internal successors, (15002), 13 states have internal predecessors, (15002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:24:33,833 INFO L175 Difference]: Start difference. First operand has 99 places, 157 transitions, 1088 flow. Second operand 12 states and 5601 transitions. [2022-11-23 03:24:33,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 401 transitions, 3530 flow [2022-11-23 03:24:34,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 401 transitions, 3424 flow, removed 53 selfloop flow, removed 1 redundant places. [2022-11-23 03:24:34,445 INFO L231 Difference]: Finished difference. Result has 114 places, 166 transitions, 1210 flow [2022-11-23 03:24:34,446 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1154, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1210, PETRI_PLACES=114, PETRI_TRANSITIONS=166} [2022-11-23 03:24:34,447 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 72 predicate places. [2022-11-23 03:24:34,447 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 166 transitions, 1210 flow [2022-11-23 03:24:34,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 457.7692307692308) internal successors, (5951), 13 states have internal predecessors, (5951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:24:34,449 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:24:34,449 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] [2022-11-23 03:24:34,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 03:24:34,450 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:24:34,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:24:34,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1974182541, now seen corresponding path program 1 times [2022-11-23 03:24:34,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:24:34,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085440674] [2022-11-23 03:24:34,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:24:34,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:24:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:24:34,795 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 03:24:34,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:24:34,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085440674] [2022-11-23 03:24:34,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085440674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:24:34,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:24:34,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:24:34,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871323025] [2022-11-23 03:24:34,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:24:34,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:24:34,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:24:34,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:24:34,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:24:34,928 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 488 out of 1154 [2022-11-23 03:24:34,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 166 transitions, 1210 flow. Second operand has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:24:34,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:24:34,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 488 of 1154 [2022-11-23 03:24:34,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:24:39,871 INFO L130 PetriNetUnfolder]: 10361/16980 cut-off events. [2022-11-23 03:24:39,871 INFO L131 PetriNetUnfolder]: For 57127/57127 co-relation queries the response was YES. [2022-11-23 03:24:40,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72049 conditions, 16980 events. 10361/16980 cut-off events. For 57127/57127 co-relation queries the response was YES. Maximal size of possible extension queue 1039. Compared 125156 event pairs, 3444 based on Foata normal form. 214/17193 useless extension candidates. Maximal degree in co-relation 71995. Up to 6795 conditions per place. [2022-11-23 03:24:40,089 INFO L137 encePairwiseOnDemand]: 1146/1154 looper letters, 270 selfloop transitions, 91 changer transitions 6/367 dead transitions. [2022-11-23 03:24:40,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 367 transitions, 3478 flow [2022-11-23 03:24:40,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:24:40,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 03:24:40,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2542 transitions. [2022-11-23 03:24:40,096 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44055459272097053 [2022-11-23 03:24:40,097 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2542 transitions. [2022-11-23 03:24:40,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2542 transitions. [2022-11-23 03:24:40,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:24:40,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2542 transitions. [2022-11-23 03:24:40,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 508.4) internal successors, (2542), 5 states have internal predecessors, (2542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:24:40,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1154.0) internal successors, (6924), 6 states have internal predecessors, (6924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:24:40,112 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1154.0) internal successors, (6924), 6 states have internal predecessors, (6924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:24:40,113 INFO L175 Difference]: Start difference. First operand has 114 places, 166 transitions, 1210 flow. Second operand 5 states and 2542 transitions. [2022-11-23 03:24:40,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 367 transitions, 3478 flow [2022-11-23 03:24:41,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 367 transitions, 3450 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-11-23 03:24:41,344 INFO L231 Difference]: Finished difference. Result has 115 places, 222 transitions, 2041 flow [2022-11-23 03:24:41,344 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1154, PETRI_DIFFERENCE_MINUEND_FLOW=1192, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2041, PETRI_PLACES=115, PETRI_TRANSITIONS=222} [2022-11-23 03:24:41,345 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 73 predicate places. [2022-11-23 03:24:41,345 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 222 transitions, 2041 flow [2022-11-23 03:24:41,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:24:41,346 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:24:41,346 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] [2022-11-23 03:24:41,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 03:24:41,347 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:24:41,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:24:41,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1201835751, now seen corresponding path program 2 times [2022-11-23 03:24:41,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:24:41,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992920402] [2022-11-23 03:24:41,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:24:41,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:24:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:24:41,855 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 03:24:41,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:24:41,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992920402] [2022-11-23 03:24:41,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992920402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:24:41,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:24:41,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:24:41,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315951665] [2022-11-23 03:24:41,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:24:41,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:24:41,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:24:41,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:24:41,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:24:42,043 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 488 out of 1154 [2022-11-23 03:24:42,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 222 transitions, 2041 flow. Second operand has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:24:42,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:24:42,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 488 of 1154 [2022-11-23 03:24:42,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:24:50,252 INFO L130 PetriNetUnfolder]: 15237/25364 cut-off events. [2022-11-23 03:24:50,252 INFO L131 PetriNetUnfolder]: For 107321/107321 co-relation queries the response was YES. [2022-11-23 03:24:50,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116488 conditions, 25364 events. 15237/25364 cut-off events. For 107321/107321 co-relation queries the response was YES. Maximal size of possible extension queue 1553. Compared 204634 event pairs, 3885 based on Foata normal form. 300/25663 useless extension candidates. Maximal degree in co-relation 116434. Up to 11626 conditions per place. [2022-11-23 03:24:50,560 INFO L137 encePairwiseOnDemand]: 1146/1154 looper letters, 336 selfloop transitions, 126 changer transitions 0/462 dead transitions. [2022-11-23 03:24:50,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 462 transitions, 5201 flow [2022-11-23 03:24:50,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:24:50,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 03:24:50,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2034 transitions. [2022-11-23 03:24:50,567 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4406412478336222 [2022-11-23 03:24:50,567 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2034 transitions. [2022-11-23 03:24:50,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2034 transitions. [2022-11-23 03:24:50,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:24:50,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2034 transitions. [2022-11-23 03:24:50,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 508.5) internal successors, (2034), 4 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:24:50,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1154.0) internal successors, (5770), 5 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:24:50,580 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1154.0) internal successors, (5770), 5 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:24:50,581 INFO L175 Difference]: Start difference. First operand has 115 places, 222 transitions, 2041 flow. Second operand 4 states and 2034 transitions. [2022-11-23 03:24:50,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 462 transitions, 5201 flow [2022-11-23 03:24:52,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 462 transitions, 5197 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-11-23 03:24:52,679 INFO L231 Difference]: Finished difference. Result has 121 places, 312 transitions, 3700 flow [2022-11-23 03:24:52,679 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1154, PETRI_DIFFERENCE_MINUEND_FLOW=2039, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3700, PETRI_PLACES=121, PETRI_TRANSITIONS=312} [2022-11-23 03:24:52,680 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 79 predicate places. [2022-11-23 03:24:52,680 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 312 transitions, 3700 flow [2022-11-23 03:24:52,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:24:52,681 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:24:52,681 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] [2022-11-23 03:24:52,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 03:24:52,682 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:24:52,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:24:52,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1376762769, now seen corresponding path program 1 times [2022-11-23 03:24:52,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:24:52,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898007876] [2022-11-23 03:24:52,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:24:52,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:24:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:24:53,036 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 03:24:53,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:24:53,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898007876] [2022-11-23 03:24:53,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898007876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:24:53,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:24:53,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:24:53,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604974868] [2022-11-23 03:24:53,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:24:53,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:24:53,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:24:53,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:24:53,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:24:53,175 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 488 out of 1154 [2022-11-23 03:24:53,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 312 transitions, 3700 flow. Second operand has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:24:53,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:24:53,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 488 of 1154 [2022-11-23 03:24:53,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:25:01,065 INFO L130 PetriNetUnfolder]: 15344/25749 cut-off events. [2022-11-23 03:25:01,065 INFO L131 PetriNetUnfolder]: For 144031/144031 co-relation queries the response was YES. [2022-11-23 03:25:01,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127337 conditions, 25749 events. 15344/25749 cut-off events. For 144031/144031 co-relation queries the response was YES. Maximal size of possible extension queue 1612. Compared 210111 event pairs, 5228 based on Foata normal form. 314/26062 useless extension candidates. Maximal degree in co-relation 127280. Up to 11434 conditions per place. [2022-11-23 03:25:01,396 INFO L137 encePairwiseOnDemand]: 1146/1154 looper letters, 364 selfloop transitions, 88 changer transitions 15/467 dead transitions. [2022-11-23 03:25:01,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 467 transitions, 6141 flow [2022-11-23 03:25:01,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:25:01,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 03:25:01,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2540 transitions. [2022-11-23 03:25:01,404 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44020797227036396 [2022-11-23 03:25:01,404 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2540 transitions. [2022-11-23 03:25:01,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2540 transitions. [2022-11-23 03:25:01,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:25:01,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2540 transitions. [2022-11-23 03:25:01,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 508.0) internal successors, (2540), 5 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:25:01,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1154.0) internal successors, (6924), 6 states have internal predecessors, (6924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:25:01,421 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1154.0) internal successors, (6924), 6 states have internal predecessors, (6924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:25:01,421 INFO L175 Difference]: Start difference. First operand has 121 places, 312 transitions, 3700 flow. Second operand 5 states and 2540 transitions. [2022-11-23 03:25:01,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 467 transitions, 6141 flow [2022-11-23 03:25:03,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 467 transitions, 6141 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 03:25:03,730 INFO L231 Difference]: Finished difference. Result has 128 places, 328 transitions, 4147 flow [2022-11-23 03:25:03,730 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1154, PETRI_DIFFERENCE_MINUEND_FLOW=3700, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4147, PETRI_PLACES=128, PETRI_TRANSITIONS=328} [2022-11-23 03:25:03,731 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 86 predicate places. [2022-11-23 03:25:03,731 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 328 transitions, 4147 flow [2022-11-23 03:25:03,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:25:03,732 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:25:03,733 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] [2022-11-23 03:25:03,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 03:25:03,733 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:25:03,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:25:03,734 INFO L85 PathProgramCache]: Analyzing trace with hash 787696865, now seen corresponding path program 4 times [2022-11-23 03:25:03,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:25:03,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366669723] [2022-11-23 03:25:03,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:25:03,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:25:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:25:06,998 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 03:25:06,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:25:06,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366669723] [2022-11-23 03:25:06,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366669723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:25:06,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:25:06,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 03:25:06,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821325126] [2022-11-23 03:25:07,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:25:07,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 03:25:07,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:25:07,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 03:25:07,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-23 03:25:09,430 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 455 out of 1154 [2022-11-23 03:25:09,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 328 transitions, 4147 flow. Second operand has 12 states, 12 states have (on average 458.0) internal successors, (5496), 12 states have internal predecessors, (5496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:25:09,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:25:09,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 455 of 1154 [2022-11-23 03:25:09,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:25:18,882 INFO L130 PetriNetUnfolder]: 17683/30237 cut-off events. [2022-11-23 03:25:18,882 INFO L131 PetriNetUnfolder]: For 203358/203358 co-relation queries the response was YES. [2022-11-23 03:25:19,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160457 conditions, 30237 events. 17683/30237 cut-off events. For 203358/203358 co-relation queries the response was YES. Maximal size of possible extension queue 1908. Compared 259697 event pairs, 3184 based on Foata normal form. 1/30237 useless extension candidates. Maximal degree in co-relation 160396. Up to 14466 conditions per place. [2022-11-23 03:25:19,202 INFO L137 encePairwiseOnDemand]: 1144/1154 looper letters, 690 selfloop transitions, 32 changer transitions 7/729 dead transitions. [2022-11-23 03:25:19,203 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 729 transitions, 10108 flow [2022-11-23 03:25:19,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 03:25:19,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-23 03:25:19,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 5162 transitions. [2022-11-23 03:25:19,219 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4066488104616354 [2022-11-23 03:25:19,220 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 5162 transitions. [2022-11-23 03:25:19,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 5162 transitions. [2022-11-23 03:25:19,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:25:19,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 5162 transitions. [2022-11-23 03:25:19,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 469.27272727272725) internal successors, (5162), 11 states have internal predecessors, (5162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:25:19,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1154.0) internal successors, (13848), 12 states have internal predecessors, (13848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:25:19,249 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1154.0) internal successors, (13848), 12 states have internal predecessors, (13848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:25:19,250 INFO L175 Difference]: Start difference. First operand has 128 places, 328 transitions, 4147 flow. Second operand 11 states and 5162 transitions. [2022-11-23 03:25:19,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 729 transitions, 10108 flow [2022-11-23 03:25:25,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 729 transitions, 9705 flow, removed 46 selfloop flow, removed 2 redundant places. [2022-11-23 03:25:25,678 INFO L231 Difference]: Finished difference. Result has 143 places, 341 transitions, 4236 flow [2022-11-23 03:25:25,679 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1154, PETRI_DIFFERENCE_MINUEND_FLOW=3967, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4236, PETRI_PLACES=143, PETRI_TRANSITIONS=341} [2022-11-23 03:25:25,679 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 101 predicate places. [2022-11-23 03:25:25,679 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 341 transitions, 4236 flow [2022-11-23 03:25:25,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 458.0) internal successors, (5496), 12 states have internal predecessors, (5496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:25:25,681 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:25:25,681 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] [2022-11-23 03:25:25,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 03:25:25,681 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:25:25,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:25:25,682 INFO L85 PathProgramCache]: Analyzing trace with hash -105539365, now seen corresponding path program 2 times [2022-11-23 03:25:25,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:25:25,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760906782] [2022-11-23 03:25:25,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:25:25,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:25:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:25:26,181 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 03:25:26,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:25:26,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760906782] [2022-11-23 03:25:26,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760906782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:25:26,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:25:26,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:25:26,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136111282] [2022-11-23 03:25:26,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:25:26,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:25:26,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:25:26,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:25:26,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:25:26,394 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 488 out of 1154 [2022-11-23 03:25:26,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 341 transitions, 4236 flow. Second operand has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:25:26,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:25:26,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 488 of 1154 [2022-11-23 03:25:26,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:25:37,113 INFO L130 PetriNetUnfolder]: 20908/35909 cut-off events. [2022-11-23 03:25:37,113 INFO L131 PetriNetUnfolder]: For 258524/258524 co-relation queries the response was YES. [2022-11-23 03:25:37,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191491 conditions, 35909 events. 20908/35909 cut-off events. For 258524/258524 co-relation queries the response was YES. Maximal size of possible extension queue 2318. Compared 318603 event pairs, 4289 based on Foata normal form. 208/36116 useless extension candidates. Maximal degree in co-relation 191421. Up to 13632 conditions per place. [2022-11-23 03:25:37,572 INFO L137 encePairwiseOnDemand]: 1147/1154 looper letters, 461 selfloop transitions, 98 changer transitions 0/559 dead transitions. [2022-11-23 03:25:37,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 559 transitions, 8094 flow [2022-11-23 03:25:37,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:25:37,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 03:25:37,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2032 transitions. [2022-11-23 03:25:37,581 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44020797227036396 [2022-11-23 03:25:37,581 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2032 transitions. [2022-11-23 03:25:37,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2032 transitions. [2022-11-23 03:25:37,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:25:37,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2032 transitions. [2022-11-23 03:25:37,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 508.0) internal successors, (2032), 4 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:25:37,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1154.0) internal successors, (5770), 5 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:25:37,593 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1154.0) internal successors, (5770), 5 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:25:37,594 INFO L175 Difference]: Start difference. First operand has 143 places, 341 transitions, 4236 flow. Second operand 4 states and 2032 transitions. [2022-11-23 03:25:37,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 559 transitions, 8094 flow [2022-11-23 03:25:44,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 559 transitions, 7957 flow, removed 14 selfloop flow, removed 6 redundant places. [2022-11-23 03:25:44,745 INFO L231 Difference]: Finished difference. Result has 142 places, 391 transitions, 5311 flow [2022-11-23 03:25:44,746 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1154, PETRI_DIFFERENCE_MINUEND_FLOW=4057, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=5311, PETRI_PLACES=142, PETRI_TRANSITIONS=391} [2022-11-23 03:25:44,746 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 100 predicate places. [2022-11-23 03:25:44,746 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 391 transitions, 5311 flow [2022-11-23 03:25:44,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:25:44,747 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:25:44,747 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] [2022-11-23 03:25:44,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 03:25:44,748 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:25:44,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:25:44,748 INFO L85 PathProgramCache]: Analyzing trace with hash -794505835, now seen corresponding path program 1 times [2022-11-23 03:25:44,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:25:44,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436156540] [2022-11-23 03:25:44,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:25:44,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:25:44,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:25:46,841 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 03:25:46,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:25:46,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436156540] [2022-11-23 03:25:46,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436156540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:25:46,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:25:46,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 03:25:46,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948363626] [2022-11-23 03:25:46,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:25:46,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:25:46,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:25:46,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:25:46,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:25:47,647 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 474 out of 1154 [2022-11-23 03:25:47,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 391 transitions, 5311 flow. Second operand has 7 states, 7 states have (on average 479.14285714285717) internal successors, (3354), 7 states have internal predecessors, (3354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:25:47,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:25:47,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 474 of 1154 [2022-11-23 03:25:47,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand