./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b68e155d55184c39a54e11a2c420443b840324481c8995060134516395f2d120 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:42:51,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:42:51,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:42:51,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:42:51,517 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:42:51,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:42:51,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:42:51,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:42:51,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:42:51,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:42:51,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:42:51,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:42:51,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:42:51,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:42:51,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:42:51,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:42:51,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:42:51,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:42:51,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:42:51,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:42:51,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:42:51,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:42:51,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:42:51,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:42:51,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:42:51,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:42:51,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:42:51,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:42:51,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:42:51,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:42:51,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:42:51,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:42:51,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:42:51,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:42:51,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:42:51,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:42:51,599 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:42:51,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:42:51,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:42:51,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:42:51,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:42:51,604 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:42:51,651 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:42:51,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:42:51,652 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:42:51,653 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:42:51,654 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:42:51,654 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:42:51,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:42:51,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:42:51,656 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:42:51,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:42:51,657 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:42:51,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:42:51,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:42:51,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:42:51,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:42:51,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:42:51,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:42:51,660 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:42:51,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:42:51,660 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:42:51,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:42:51,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:42:51,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:42:51,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:42:51,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:42:51,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:42:51,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:42:51,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:42:51,663 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:42:51,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:42:51,664 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:42:51,664 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:42:51,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:42:51,665 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b68e155d55184c39a54e11a2c420443b840324481c8995060134516395f2d120 [2022-11-20 12:42:52,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:42:52,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:42:52,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:42:52,129 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:42:52,130 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:42:52,132 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2022-11-20 12:42:55,843 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:42:56,139 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:42:56,140 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2022-11-20 12:42:56,152 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/data/93a5d6e29/f9d410f3388944c08e2b21fe2ae70e6e/FLAGc3fdf5df5 [2022-11-20 12:42:56,177 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/data/93a5d6e29/f9d410f3388944c08e2b21fe2ae70e6e [2022-11-20 12:42:56,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:42:56,183 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:42:56,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:42:56,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:42:56,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:42:56,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:42:56" (1/1) ... [2022-11-20 12:42:56,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e37042a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:56, skipping insertion in model container [2022-11-20 12:42:56,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:42:56" (1/1) ... [2022-11-20 12:42:56,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:42:56,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:42:56,542 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_56d41027-d23d-4422-9d43-f58b234d6c77/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c[3097,3110] [2022-11-20 12:42:56,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:42:56,565 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:42:56,597 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_56d41027-d23d-4422-9d43-f58b234d6c77/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c[3097,3110] [2022-11-20 12:42:56,602 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:42:56,620 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:42:56,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:56 WrapperNode [2022-11-20 12:42:56,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:42:56,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:42:56,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:42:56,623 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:42:56,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:56" (1/1) ... [2022-11-20 12:42:56,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:56" (1/1) ... [2022-11-20 12:42:56,683 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 17, calls inlined = 25, statements flattened = 275 [2022-11-20 12:42:56,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:42:56,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:42:56,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:42:56,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:42:56,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:56" (1/1) ... [2022-11-20 12:42:56,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:56" (1/1) ... [2022-11-20 12:42:56,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:56" (1/1) ... [2022-11-20 12:42:56,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:56" (1/1) ... [2022-11-20 12:42:56,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:56" (1/1) ... [2022-11-20 12:42:56,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:56" (1/1) ... [2022-11-20 12:42:56,726 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:56" (1/1) ... [2022-11-20 12:42:56,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:56" (1/1) ... [2022-11-20 12:42:56,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:42:56,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:42:56,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:42:56,735 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:42:56,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:56" (1/1) ... [2022-11-20 12:42:56,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:42:56,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:42:56,777 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:42:56,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:42:56,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:42:56,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:42:56,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:42:56,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:42:56,829 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:42:56,829 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:42:56,829 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:42:56,829 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:42:56,829 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 12:42:56,830 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 12:42:56,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:42:56,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:42:56,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:42:56,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:42:56,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:42:56,833 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:42:56,982 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:42:56,985 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:42:57,682 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:42:57,697 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:42:57,698 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-20 12:42:57,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:42:57 BoogieIcfgContainer [2022-11-20 12:42:57,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:42:57,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:42:57,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:42:57,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:42:57,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:42:56" (1/3) ... [2022-11-20 12:42:57,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66c31d1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:42:57, skipping insertion in model container [2022-11-20 12:42:57,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:56" (2/3) ... [2022-11-20 12:42:57,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66c31d1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:42:57, skipping insertion in model container [2022-11-20 12:42:57,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:42:57" (3/3) ... [2022-11-20 12:42:57,713 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-subst.wvr.c [2022-11-20 12:42:57,723 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:42:57,737 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:42:57,738 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:42:57,738 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:42:58,030 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 12:42:58,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 345 places, 364 transitions, 752 flow [2022-11-20 12:42:58,412 INFO L130 PetriNetUnfolder]: 29/361 cut-off events. [2022-11-20 12:42:58,412 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 12:42:58,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374 conditions, 361 events. 29/361 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 565 event pairs, 0 based on Foata normal form. 0/331 useless extension candidates. Maximal degree in co-relation 272. Up to 2 conditions per place. [2022-11-20 12:42:58,427 INFO L82 GeneralOperation]: Start removeDead. Operand has 345 places, 364 transitions, 752 flow [2022-11-20 12:42:58,443 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 331 places, 350 transitions, 718 flow [2022-11-20 12:42:58,469 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:42:58,479 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;@53b60e4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:42:58,480 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-20 12:42:58,633 INFO L130 PetriNetUnfolder]: 29/349 cut-off events. [2022-11-20 12:42:58,634 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 12:42:58,634 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:42:58,636 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:58,637 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:42:58,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:58,646 INFO L85 PathProgramCache]: Analyzing trace with hash -554286568, now seen corresponding path program 1 times [2022-11-20 12:42:58,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:58,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449199990] [2022-11-20 12:42:58,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:58,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:59,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:59,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:59,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449199990] [2022-11-20 12:42:59,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449199990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:59,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:59,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:42:59,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510482770] [2022-11-20 12:42:59,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:59,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:42:59,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:59,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:42:59,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:42:59,234 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 364 [2022-11-20 12:42:59,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 350 transitions, 718 flow. Second operand has 2 states, 2 states have (on average 340.0) internal successors, (680), 2 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:59,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:42:59,243 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 364 [2022-11-20 12:42:59,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:42:59,414 INFO L130 PetriNetUnfolder]: 6/327 cut-off events. [2022-11-20 12:42:59,414 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-11-20 12:42:59,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 327 events. 6/327 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 542 event pairs, 0 based on Foata normal form. 35/339 useless extension candidates. Maximal degree in co-relation 257. Up to 7 conditions per place. [2022-11-20 12:42:59,424 INFO L137 encePairwiseOnDemand]: 341/364 looper letters, 6 selfloop transitions, 0 changer transitions 8/327 dead transitions. [2022-11-20 12:42:59,425 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 327 transitions, 684 flow [2022-11-20 12:42:59,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:42:59,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 12:42:59,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 697 transitions. [2022-11-20 12:42:59,452 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9574175824175825 [2022-11-20 12:42:59,453 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 697 transitions. [2022-11-20 12:42:59,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 697 transitions. [2022-11-20 12:42:59,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:42:59,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 697 transitions. [2022-11-20 12:42:59,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 348.5) internal successors, (697), 2 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:59,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 364.0) internal successors, (1092), 3 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:59,482 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 364.0) internal successors, (1092), 3 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:59,484 INFO L175 Difference]: Start difference. First operand has 331 places, 350 transitions, 718 flow. Second operand 2 states and 697 transitions. [2022-11-20 12:42:59,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 327 transitions, 684 flow [2022-11-20 12:42:59,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 327 transitions, 672 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 12:42:59,511 INFO L231 Difference]: Finished difference. Result has 326 places, 319 transitions, 644 flow [2022-11-20 12:42:59,514 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=644, PETRI_PLACES=326, PETRI_TRANSITIONS=319} [2022-11-20 12:42:59,521 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, -5 predicate places. [2022-11-20 12:42:59,522 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 319 transitions, 644 flow [2022-11-20 12:42:59,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 340.0) internal successors, (680), 2 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:59,523 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:42:59,524 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:59,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:42:59,525 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:42:59,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:59,526 INFO L85 PathProgramCache]: Analyzing trace with hash 121993188, now seen corresponding path program 1 times [2022-11-20 12:42:59,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:59,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700573608] [2022-11-20 12:42:59,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:59,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:00,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:43:00,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:00,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700573608] [2022-11-20 12:43:00,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700573608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:00,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:43:00,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:43:00,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86488844] [2022-11-20 12:43:00,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:00,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:43:00,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:00,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:43:00,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:43:00,092 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 364 [2022-11-20 12:43:00,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 319 transitions, 644 flow. Second operand has 5 states, 5 states have (on average 304.0) internal successors, (1520), 5 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:00,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:43:00,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 364 [2022-11-20 12:43:00,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:43:00,369 INFO L130 PetriNetUnfolder]: 6/337 cut-off events. [2022-11-20 12:43:00,370 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 12:43:00,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 337 events. 6/337 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 523 event pairs, 0 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 394. Up to 38 conditions per place. [2022-11-20 12:43:00,374 INFO L137 encePairwiseOnDemand]: 349/364 looper letters, 42 selfloop transitions, 12 changer transitions 0/331 dead transitions. [2022-11-20 12:43:00,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 331 transitions, 776 flow [2022-11-20 12:43:00,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:43:00,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:43:00,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1547 transitions. [2022-11-20 12:43:00,382 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.85 [2022-11-20 12:43:00,382 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1547 transitions. [2022-11-20 12:43:00,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1547 transitions. [2022-11-20 12:43:00,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:43:00,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1547 transitions. [2022-11-20 12:43:00,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 309.4) internal successors, (1547), 5 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:00,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 364.0) internal successors, (2184), 6 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:00,396 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 364.0) internal successors, (2184), 6 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:00,398 INFO L175 Difference]: Start difference. First operand has 326 places, 319 transitions, 644 flow. Second operand 5 states and 1547 transitions. [2022-11-20 12:43:00,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 331 transitions, 776 flow [2022-11-20 12:43:00,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 331 transitions, 776 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:43:00,411 INFO L231 Difference]: Finished difference. Result has 323 places, 322 transitions, 692 flow [2022-11-20 12:43:00,412 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=692, PETRI_PLACES=323, PETRI_TRANSITIONS=322} [2022-11-20 12:43:00,413 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, -8 predicate places. [2022-11-20 12:43:00,413 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 322 transitions, 692 flow [2022-11-20 12:43:00,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.0) internal successors, (1520), 5 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:00,416 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:43:00,416 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:00,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:43:00,417 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:43:00,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:00,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1995265645, now seen corresponding path program 1 times [2022-11-20 12:43:00,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:00,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734935174] [2022-11-20 12:43:00,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:00,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:01,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:43:01,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:01,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734935174] [2022-11-20 12:43:01,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734935174] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:43:01,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370916479] [2022-11-20 12:43:01,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:01,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:43:01,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:43:01,067 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:43:01,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:43:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:01,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:43:01,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:01,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:43:01,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:43:01,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:43:01,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370916479] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:43:01,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:43:01,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-20 12:43:01,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620432180] [2022-11-20 12:43:01,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:43:01,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:43:01,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:01,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:43:01,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:43:01,737 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 364 [2022-11-20 12:43:01,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 322 transitions, 692 flow. Second operand has 15 states, 15 states have (on average 299.3333333333333) internal successors, (4490), 15 states have internal predecessors, (4490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:01,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:43:01,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 364 [2022-11-20 12:43:01,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:43:02,309 INFO L130 PetriNetUnfolder]: 6/364 cut-off events. [2022-11-20 12:43:02,309 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-20 12:43:02,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 364 events. 6/364 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 496 event pairs, 0 based on Foata normal form. 6/358 useless extension candidates. Maximal degree in co-relation 469. Up to 29 conditions per place. [2022-11-20 12:43:02,315 INFO L137 encePairwiseOnDemand]: 340/364 looper letters, 45 selfloop transitions, 33 changer transitions 0/352 dead transitions. [2022-11-20 12:43:02,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 352 transitions, 914 flow [2022-11-20 12:43:02,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:43:02,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:43:02,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3329 transitions. [2022-11-20 12:43:02,324 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8314185814185814 [2022-11-20 12:43:02,324 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3329 transitions. [2022-11-20 12:43:02,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3329 transitions. [2022-11-20 12:43:02,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:43:02,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3329 transitions. [2022-11-20 12:43:02,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 302.6363636363636) internal successors, (3329), 11 states have internal predecessors, (3329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:02,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 364.0) internal successors, (4368), 12 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:02,350 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 364.0) internal successors, (4368), 12 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:02,351 INFO L175 Difference]: Start difference. First operand has 323 places, 322 transitions, 692 flow. Second operand 11 states and 3329 transitions. [2022-11-20 12:43:02,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 352 transitions, 914 flow [2022-11-20 12:43:02,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 352 transitions, 896 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:43:02,360 INFO L231 Difference]: Finished difference. Result has 333 places, 340 transitions, 841 flow [2022-11-20 12:43:02,361 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=841, PETRI_PLACES=333, PETRI_TRANSITIONS=340} [2022-11-20 12:43:02,362 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 2 predicate places. [2022-11-20 12:43:02,363 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 340 transitions, 841 flow [2022-11-20 12:43:02,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 299.3333333333333) internal successors, (4490), 15 states have internal predecessors, (4490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:02,366 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:43:02,367 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:02,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:43:02,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:43:02,574 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:43:02,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:02,575 INFO L85 PathProgramCache]: Analyzing trace with hash 2112168587, now seen corresponding path program 2 times [2022-11-20 12:43:02,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:02,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537548100] [2022-11-20 12:43:02,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:02,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:03,234 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-20 12:43:03,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:03,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537548100] [2022-11-20 12:43:03,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537548100] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:43:03,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548044516] [2022-11-20 12:43:03,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:43:03,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:43:03,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:43:03,238 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:43:03,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:43:03,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:43:03,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:43:03,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:43:03,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:03,675 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-20 12:43:03,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:43:03,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548044516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:03,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:43:03,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-11-20 12:43:03,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630434967] [2022-11-20 12:43:03,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:03,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:43:03,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:03,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:43:03,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:43:03,695 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 364 [2022-11-20 12:43:03,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 340 transitions, 841 flow. Second operand has 7 states, 7 states have (on average 309.2857142857143) internal successors, (2165), 7 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:03,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:43:03,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 364 [2022-11-20 12:43:03,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:43:04,961 INFO L130 PetriNetUnfolder]: 363/2263 cut-off events. [2022-11-20 12:43:04,962 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2022-11-20 12:43:04,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3115 conditions, 2263 events. 363/2263 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 15924 event pairs, 160 based on Foata normal form. 0/2064 useless extension candidates. Maximal degree in co-relation 3107. Up to 326 conditions per place. [2022-11-20 12:43:05,013 INFO L137 encePairwiseOnDemand]: 354/364 looper letters, 96 selfloop transitions, 22 changer transitions 4/429 dead transitions. [2022-11-20 12:43:05,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 429 transitions, 1280 flow [2022-11-20 12:43:05,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:43:05,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:43:05,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3500 transitions. [2022-11-20 12:43:05,022 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8741258741258742 [2022-11-20 12:43:05,022 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3500 transitions. [2022-11-20 12:43:05,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3500 transitions. [2022-11-20 12:43:05,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:43:05,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3500 transitions. [2022-11-20 12:43:05,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 318.1818181818182) internal successors, (3500), 11 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:05,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 364.0) internal successors, (4368), 12 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:05,162 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 364.0) internal successors, (4368), 12 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:05,163 INFO L175 Difference]: Start difference. First operand has 333 places, 340 transitions, 841 flow. Second operand 11 states and 3500 transitions. [2022-11-20 12:43:05,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 429 transitions, 1280 flow [2022-11-20 12:43:05,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 429 transitions, 1255 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-11-20 12:43:05,180 INFO L231 Difference]: Finished difference. Result has 345 places, 358 transitions, 932 flow [2022-11-20 12:43:05,181 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=932, PETRI_PLACES=345, PETRI_TRANSITIONS=358} [2022-11-20 12:43:05,182 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 14 predicate places. [2022-11-20 12:43:05,183 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 358 transitions, 932 flow [2022-11-20 12:43:05,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 309.2857142857143) internal successors, (2165), 7 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:05,186 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:43:05,187 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:05,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:43:05,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:43:05,394 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:43:05,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:05,395 INFO L85 PathProgramCache]: Analyzing trace with hash -677749847, now seen corresponding path program 3 times [2022-11-20 12:43:05,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:05,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812059222] [2022-11-20 12:43:05,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:05,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:05,993 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-20 12:43:05,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:05,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812059222] [2022-11-20 12:43:05,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812059222] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:43:05,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445081327] [2022-11-20 12:43:05,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:43:05,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:43:05,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:43:05,999 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:43:06,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:43:06,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-20 12:43:06,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:43:06,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:43:06,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:06,606 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-20 12:43:06,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:43:06,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445081327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:06,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:43:06,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-11-20 12:43:06,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642215798] [2022-11-20 12:43:06,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:06,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:43:06,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:06,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:43:06,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:43:06,615 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 364 [2022-11-20 12:43:06,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 358 transitions, 932 flow. Second operand has 7 states, 7 states have (on average 309.2857142857143) internal successors, (2165), 7 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:06,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:43:06,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 364 [2022-11-20 12:43:06,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:43:08,402 INFO L130 PetriNetUnfolder]: 447/2637 cut-off events. [2022-11-20 12:43:08,402 INFO L131 PetriNetUnfolder]: For 467/562 co-relation queries the response was YES. [2022-11-20 12:43:08,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4053 conditions, 2637 events. 447/2637 cut-off events. For 467/562 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 19300 event pairs, 24 based on Foata normal form. 28/2567 useless extension candidates. Maximal degree in co-relation 4040. Up to 297 conditions per place. [2022-11-20 12:43:08,476 INFO L137 encePairwiseOnDemand]: 352/364 looper letters, 133 selfloop transitions, 48 changer transitions 0/488 dead transitions. [2022-11-20 12:43:08,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 488 transitions, 1738 flow [2022-11-20 12:43:08,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 12:43:08,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-20 12:43:08,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 5057 transitions. [2022-11-20 12:43:08,492 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8683035714285714 [2022-11-20 12:43:08,493 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 5057 transitions. [2022-11-20 12:43:08,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 5057 transitions. [2022-11-20 12:43:08,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:43:08,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 5057 transitions. [2022-11-20 12:43:08,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 316.0625) internal successors, (5057), 16 states have internal predecessors, (5057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:08,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 364.0) internal successors, (6188), 17 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:08,543 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 364.0) internal successors, (6188), 17 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:08,545 INFO L175 Difference]: Start difference. First operand has 345 places, 358 transitions, 932 flow. Second operand 16 states and 5057 transitions. [2022-11-20 12:43:08,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 488 transitions, 1738 flow [2022-11-20 12:43:08,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 488 transitions, 1738 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:43:08,569 INFO L231 Difference]: Finished difference. Result has 369 places, 398 transitions, 1286 flow [2022-11-20 12:43:08,572 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1286, PETRI_PLACES=369, PETRI_TRANSITIONS=398} [2022-11-20 12:43:08,573 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 38 predicate places. [2022-11-20 12:43:08,578 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 398 transitions, 1286 flow [2022-11-20 12:43:08,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 309.2857142857143) internal successors, (2165), 7 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:08,580 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:43:08,580 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:08,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:43:08,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:43:08,782 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:43:08,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:08,782 INFO L85 PathProgramCache]: Analyzing trace with hash -407098097, now seen corresponding path program 4 times [2022-11-20 12:43:08,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:08,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240445041] [2022-11-20 12:43:08,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:08,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:09,291 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-20 12:43:09,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:09,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240445041] [2022-11-20 12:43:09,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240445041] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:43:09,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733936996] [2022-11-20 12:43:09,293 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:43:09,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:43:09,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:43:09,295 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:43:09,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:43:09,499 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:43:09,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:43:09,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:43:09,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:09,767 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-20 12:43:09,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:43:09,965 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-20 12:43:09,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733936996] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:43:09,965 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:43:09,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-20 12:43:09,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523946852] [2022-11-20 12:43:09,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:43:09,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 12:43:09,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:09,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 12:43:09,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-20 12:43:09,978 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 364 [2022-11-20 12:43:09,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 398 transitions, 1286 flow. Second operand has 22 states, 22 states have (on average 298.8636363636364) internal successors, (6575), 22 states have internal predecessors, (6575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:09,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:43:09,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 364 [2022-11-20 12:43:09,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:43:10,985 INFO L130 PetriNetUnfolder]: 69/1078 cut-off events. [2022-11-20 12:43:10,985 INFO L131 PetriNetUnfolder]: For 358/376 co-relation queries the response was YES. [2022-11-20 12:43:10,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1688 conditions, 1078 events. 69/1078 cut-off events. For 358/376 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5055 event pairs, 3 based on Foata normal form. 11/1058 useless extension candidates. Maximal degree in co-relation 1665. Up to 39 conditions per place. [2022-11-20 12:43:11,005 INFO L137 encePairwiseOnDemand]: 340/364 looper letters, 57 selfloop transitions, 51 changer transitions 0/440 dead transitions. [2022-11-20 12:43:11,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 440 transitions, 1670 flow [2022-11-20 12:43:11,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 12:43:11,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 12:43:11,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5129 transitions. [2022-11-20 12:43:11,020 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8288623141564319 [2022-11-20 12:43:11,020 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5129 transitions. [2022-11-20 12:43:11,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5129 transitions. [2022-11-20 12:43:11,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:43:11,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5129 transitions. [2022-11-20 12:43:11,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 301.70588235294116) internal successors, (5129), 17 states have internal predecessors, (5129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:11,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 364.0) internal successors, (6552), 18 states have internal predecessors, (6552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:11,054 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 364.0) internal successors, (6552), 18 states have internal predecessors, (6552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:11,055 INFO L175 Difference]: Start difference. First operand has 369 places, 398 transitions, 1286 flow. Second operand 17 states and 5129 transitions. [2022-11-20 12:43:11,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 440 transitions, 1670 flow [2022-11-20 12:43:11,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 440 transitions, 1656 flow, removed 7 selfloop flow, removed 0 redundant places. [2022-11-20 12:43:11,071 INFO L231 Difference]: Finished difference. Result has 388 places, 419 transitions, 1535 flow [2022-11-20 12:43:11,072 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1535, PETRI_PLACES=388, PETRI_TRANSITIONS=419} [2022-11-20 12:43:11,073 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 57 predicate places. [2022-11-20 12:43:11,073 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 419 transitions, 1535 flow [2022-11-20 12:43:11,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 298.8636363636364) internal successors, (6575), 22 states have internal predecessors, (6575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:11,076 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:43:11,077 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:11,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:43:11,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 12:43:11,284 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:43:11,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:11,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1082572149, now seen corresponding path program 5 times [2022-11-20 12:43:11,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:11,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778330699] [2022-11-20 12:43:11,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:11,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:12,107 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-20 12:43:12,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:12,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778330699] [2022-11-20 12:43:12,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778330699] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:12,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:43:12,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:43:12,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363936060] [2022-11-20 12:43:12,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:12,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:43:12,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:12,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:43:12,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:43:12,114 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 364 [2022-11-20 12:43:12,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 419 transitions, 1535 flow. Second operand has 7 states, 7 states have (on average 309.2857142857143) internal successors, (2165), 7 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:12,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:43:12,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 364 [2022-11-20 12:43:12,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:43:14,258 INFO L130 PetriNetUnfolder]: 630/4136 cut-off events. [2022-11-20 12:43:14,258 INFO L131 PetriNetUnfolder]: For 2820/3242 co-relation queries the response was YES. [2022-11-20 12:43:14,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7116 conditions, 4136 events. 630/4136 cut-off events. For 2820/3242 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 35329 event pairs, 131 based on Foata normal form. 139/4082 useless extension candidates. Maximal degree in co-relation 7089. Up to 579 conditions per place. [2022-11-20 12:43:14,371 INFO L137 encePairwiseOnDemand]: 348/364 looper letters, 131 selfloop transitions, 83 changer transitions 3/545 dead transitions. [2022-11-20 12:43:14,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 545 transitions, 2593 flow [2022-11-20 12:43:14,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:43:14,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 12:43:14,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 4123 transitions. [2022-11-20 12:43:14,384 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.871301775147929 [2022-11-20 12:43:14,385 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 4123 transitions. [2022-11-20 12:43:14,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 4123 transitions. [2022-11-20 12:43:14,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:43:14,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 4123 transitions. [2022-11-20 12:43:14,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 317.15384615384613) internal successors, (4123), 13 states have internal predecessors, (4123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:14,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 364.0) internal successors, (5096), 14 states have internal predecessors, (5096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:14,414 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 364.0) internal successors, (5096), 14 states have internal predecessors, (5096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:14,414 INFO L175 Difference]: Start difference. First operand has 388 places, 419 transitions, 1535 flow. Second operand 13 states and 4123 transitions. [2022-11-20 12:43:14,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 545 transitions, 2593 flow [2022-11-20 12:43:14,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 545 transitions, 2526 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-11-20 12:43:14,446 INFO L231 Difference]: Finished difference. Result has 402 places, 473 transitions, 2181 flow [2022-11-20 12:43:14,447 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=1468, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2181, PETRI_PLACES=402, PETRI_TRANSITIONS=473} [2022-11-20 12:43:14,448 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 71 predicate places. [2022-11-20 12:43:14,449 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 473 transitions, 2181 flow [2022-11-20 12:43:14,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 309.2857142857143) internal successors, (2165), 7 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:14,450 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:43:14,450 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:14,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:43:14,451 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:43:14,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:14,452 INFO L85 PathProgramCache]: Analyzing trace with hash -308094397, now seen corresponding path program 6 times [2022-11-20 12:43:14,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:14,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693969892] [2022-11-20 12:43:14,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:14,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:14,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:15,409 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-20 12:43:15,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:15,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693969892] [2022-11-20 12:43:15,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693969892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:15,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:43:15,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:43:15,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442268544] [2022-11-20 12:43:15,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:15,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:43:15,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:15,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:43:15,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:43:15,420 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 364 [2022-11-20 12:43:15,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 473 transitions, 2181 flow. Second operand has 7 states, 7 states have (on average 309.2857142857143) internal successors, (2165), 7 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:15,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:43:15,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 364 [2022-11-20 12:43:15,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:43:18,256 INFO L130 PetriNetUnfolder]: 778/5314 cut-off events. [2022-11-20 12:43:18,256 INFO L131 PetriNetUnfolder]: For 6791/7767 co-relation queries the response was YES. [2022-11-20 12:43:18,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9950 conditions, 5314 events. 778/5314 cut-off events. For 6791/7767 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 49546 event pairs, 270 based on Foata normal form. 238/5299 useless extension candidates. Maximal degree in co-relation 9913. Up to 551 conditions per place. [2022-11-20 12:43:18,446 INFO L137 encePairwiseOnDemand]: 353/364 looper letters, 199 selfloop transitions, 92 changer transitions 2/621 dead transitions. [2022-11-20 12:43:18,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 621 transitions, 3709 flow [2022-11-20 12:43:18,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:43:18,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 12:43:18,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3205 transitions. [2022-11-20 12:43:18,458 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8804945054945055 [2022-11-20 12:43:18,458 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3205 transitions. [2022-11-20 12:43:18,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3205 transitions. [2022-11-20 12:43:18,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:43:18,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3205 transitions. [2022-11-20 12:43:18,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 320.5) internal successors, (3205), 10 states have internal predecessors, (3205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:18,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 364.0) internal successors, (4004), 11 states have internal predecessors, (4004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:18,484 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 364.0) internal successors, (4004), 11 states have internal predecessors, (4004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:18,484 INFO L175 Difference]: Start difference. First operand has 402 places, 473 transitions, 2181 flow. Second operand 10 states and 3205 transitions. [2022-11-20 12:43:18,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 621 transitions, 3709 flow [2022-11-20 12:43:18,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 621 transitions, 3657 flow, removed 26 selfloop flow, removed 0 redundant places. [2022-11-20 12:43:18,551 INFO L231 Difference]: Finished difference. Result has 416 places, 508 transitions, 2796 flow [2022-11-20 12:43:18,552 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=2149, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2796, PETRI_PLACES=416, PETRI_TRANSITIONS=508} [2022-11-20 12:43:18,556 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 85 predicate places. [2022-11-20 12:43:18,557 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 508 transitions, 2796 flow [2022-11-20 12:43:18,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 309.2857142857143) internal successors, (2165), 7 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:18,559 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:43:18,560 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:18,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:43:18,561 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:43:18,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:18,562 INFO L85 PathProgramCache]: Analyzing trace with hash 971869311, now seen corresponding path program 7 times [2022-11-20 12:43:18,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:18,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795548260] [2022-11-20 12:43:18,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:18,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:19,561 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-20 12:43:19,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:19,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795548260] [2022-11-20 12:43:19,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795548260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:19,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:43:19,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:43:19,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55175881] [2022-11-20 12:43:19,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:19,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:43:19,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:19,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:43:19,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:43:19,567 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 364 [2022-11-20 12:43:19,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 508 transitions, 2796 flow. Second operand has 7 states, 7 states have (on average 309.2857142857143) internal successors, (2165), 7 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:19,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:43:19,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 364 [2022-11-20 12:43:19,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:43:22,742 INFO L130 PetriNetUnfolder]: 925/6434 cut-off events. [2022-11-20 12:43:22,742 INFO L131 PetriNetUnfolder]: For 10881/12003 co-relation queries the response was YES. [2022-11-20 12:43:22,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12624 conditions, 6434 events. 925/6434 cut-off events. For 10881/12003 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 64297 event pairs, 347 based on Foata normal form. 137/6265 useless extension candidates. Maximal degree in co-relation 12581. Up to 758 conditions per place. [2022-11-20 12:43:23,083 INFO L137 encePairwiseOnDemand]: 353/364 looper letters, 202 selfloop transitions, 120 changer transitions 2/652 dead transitions. [2022-11-20 12:43:23,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 652 transitions, 4435 flow [2022-11-20 12:43:23,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:43:23,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 12:43:23,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3215 transitions. [2022-11-20 12:43:23,091 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8832417582417582 [2022-11-20 12:43:23,092 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3215 transitions. [2022-11-20 12:43:23,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3215 transitions. [2022-11-20 12:43:23,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:43:23,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3215 transitions. [2022-11-20 12:43:23,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 321.5) internal successors, (3215), 10 states have internal predecessors, (3215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:23,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 364.0) internal successors, (4004), 11 states have internal predecessors, (4004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:23,111 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 364.0) internal successors, (4004), 11 states have internal predecessors, (4004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:23,111 INFO L175 Difference]: Start difference. First operand has 416 places, 508 transitions, 2796 flow. Second operand 10 states and 3215 transitions. [2022-11-20 12:43:23,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 652 transitions, 4435 flow [2022-11-20 12:43:23,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 652 transitions, 4325 flow, removed 10 selfloop flow, removed 2 redundant places. [2022-11-20 12:43:23,179 INFO L231 Difference]: Finished difference. Result has 429 places, 546 transitions, 3566 flow [2022-11-20 12:43:23,180 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=2709, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3566, PETRI_PLACES=429, PETRI_TRANSITIONS=546} [2022-11-20 12:43:23,182 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 98 predicate places. [2022-11-20 12:43:23,182 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 546 transitions, 3566 flow [2022-11-20 12:43:23,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 309.2857142857143) internal successors, (2165), 7 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:23,183 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:43:23,184 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:23,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:43:23,184 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)] === [2022-11-20 12:43:23,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:23,185 INFO L85 PathProgramCache]: Analyzing trace with hash 402943413, now seen corresponding path program 8 times [2022-11-20 12:43:23,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:23,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187774217] [2022-11-20 12:43:23,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:23,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:23,703 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-20 12:43:23,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:23,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187774217] [2022-11-20 12:43:23,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187774217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:23,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:43:23,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:43:23,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945341053] [2022-11-20 12:43:23,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:23,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:43:23,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:23,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:43:23,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:43:23,710 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 364 [2022-11-20 12:43:23,713 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 546 transitions, 3566 flow. Second operand has 7 states, 7 states have (on average 287.2857142857143) internal successors, (2011), 7 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) [2022-11-20 12:43:23,713 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:43:23,713 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 364 [2022-11-20 12:43:23,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:43:25,172 INFO L130 PetriNetUnfolder]: 243/3402 cut-off events. [2022-11-20 12:43:25,173 INFO L131 PetriNetUnfolder]: For 6938/7182 co-relation queries the response was YES. [2022-11-20 12:43:25,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6498 conditions, 3402 events. 243/3402 cut-off events. For 6938/7182 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 28914 event pairs, 27 based on Foata normal form. 98/3341 useless extension candidates. Maximal degree in co-relation 6450. Up to 328 conditions per place. [2022-11-20 12:43:25,255 INFO L137 encePairwiseOnDemand]: 357/364 looper letters, 162 selfloop transitions, 18 changer transitions 4/563 dead transitions. [2022-11-20 12:43:25,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 563 transitions, 3987 flow [2022-11-20 12:43:25,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:43:25,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:43:25,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2037 transitions. [2022-11-20 12:43:25,264 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7994505494505495 [2022-11-20 12:43:25,264 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2037 transitions. [2022-11-20 12:43:25,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2037 transitions. [2022-11-20 12:43:25,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:43:25,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2037 transitions. [2022-11-20 12:43:25,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 291.0) internal successors, (2037), 7 states have internal predecessors, (2037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:25,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 364.0) internal successors, (2912), 8 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:25,282 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 364.0) internal successors, (2912), 8 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:25,283 INFO L175 Difference]: Start difference. First operand has 429 places, 546 transitions, 3566 flow. Second operand 7 states and 2037 transitions. [2022-11-20 12:43:25,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 563 transitions, 3987 flow [2022-11-20 12:43:25,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 563 transitions, 3927 flow, removed 30 selfloop flow, removed 0 redundant places. [2022-11-20 12:43:25,334 INFO L231 Difference]: Finished difference. Result has 439 places, 547 transitions, 3573 flow [2022-11-20 12:43:25,336 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=3506, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3573, PETRI_PLACES=439, PETRI_TRANSITIONS=547} [2022-11-20 12:43:25,337 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 108 predicate places. [2022-11-20 12:43:25,337 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 547 transitions, 3573 flow [2022-11-20 12:43:25,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 287.2857142857143) internal successors, (2011), 7 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) [2022-11-20 12:43:25,339 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:43:25,339 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:25,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:43:25,341 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)] === [2022-11-20 12:43:25,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:25,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1612897945, now seen corresponding path program 1 times [2022-11-20 12:43:25,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:25,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664816907] [2022-11-20 12:43:25,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:25,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:26,888 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-20 12:43:26,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:26,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664816907] [2022-11-20 12:43:26,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664816907] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:43:26,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577184982] [2022-11-20 12:43:26,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:26,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:43:26,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:43:26,897 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:43:26,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:43:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:27,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 12:43:27,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:27,617 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-11-20 12:43:27,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:43:27,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577184982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:27,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:43:27,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 16 [2022-11-20 12:43:27,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004371519] [2022-11-20 12:43:27,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:27,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:43:27,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:27,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:43:27,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:43:27,627 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 364 [2022-11-20 12:43:27,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 547 transitions, 3573 flow. Second operand has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:27,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:43:27,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 364 [2022-11-20 12:43:27,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:43:47,623 INFO L130 PetriNetUnfolder]: 11001/56502 cut-off events. [2022-11-20 12:43:47,623 INFO L131 PetriNetUnfolder]: For 55388/58099 co-relation queries the response was YES. [2022-11-20 12:43:48,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97114 conditions, 56502 events. 11001/56502 cut-off events. For 55388/58099 co-relation queries the response was YES. Maximal size of possible extension queue 1127. Compared 808408 event pairs, 4224 based on Foata normal form. 603/52564 useless extension candidates. Maximal degree in co-relation 97061. Up to 8768 conditions per place. [2022-11-20 12:43:49,282 INFO L137 encePairwiseOnDemand]: 353/364 looper letters, 153 selfloop transitions, 25 changer transitions 12/670 dead transitions. [2022-11-20 12:43:49,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 670 transitions, 4246 flow [2022-11-20 12:43:49,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 12:43:49,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-20 12:43:49,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4473 transitions. [2022-11-20 12:43:49,294 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7680288461538461 [2022-11-20 12:43:49,294 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4473 transitions. [2022-11-20 12:43:49,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4473 transitions. [2022-11-20 12:43:49,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:43:49,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4473 transitions. [2022-11-20 12:43:49,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 279.5625) internal successors, (4473), 16 states have internal predecessors, (4473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:49,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 364.0) internal successors, (6188), 17 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:49,321 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 364.0) internal successors, (6188), 17 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:49,321 INFO L175 Difference]: Start difference. First operand has 439 places, 547 transitions, 3573 flow. Second operand 16 states and 4473 transitions. [2022-11-20 12:43:49,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 670 transitions, 4246 flow [2022-11-20 12:43:49,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 670 transitions, 4214 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-11-20 12:43:49,857 INFO L231 Difference]: Finished difference. Result has 457 places, 568 transitions, 3684 flow [2022-11-20 12:43:49,858 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=3549, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3684, PETRI_PLACES=457, PETRI_TRANSITIONS=568} [2022-11-20 12:43:49,859 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 126 predicate places. [2022-11-20 12:43:49,859 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 568 transitions, 3684 flow [2022-11-20 12:43:49,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:49,861 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:43:49,861 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:49,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:43:50,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 12:43:50,068 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)] === [2022-11-20 12:43:50,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:50,069 INFO L85 PathProgramCache]: Analyzing trace with hash 688886821, now seen corresponding path program 2 times [2022-11-20 12:43:50,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:50,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433913944] [2022-11-20 12:43:50,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:50,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:50,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:50,977 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-20 12:43:50,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:50,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433913944] [2022-11-20 12:43:50,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433913944] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:43:50,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258918941] [2022-11-20 12:43:50,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:43:50,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:43:50,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:43:50,980 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:43:50,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56d41027-d23d-4422-9d43-f58b234d6c77/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:43:51,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:43:51,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:43:51,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 12:43:51,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:51,462 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-11-20 12:43:51,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:43:51,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258918941] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:51,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:43:51,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 16 [2022-11-20 12:43:51,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606139586] [2022-11-20 12:43:51,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:51,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:43:51,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:51,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:43:51,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:43:51,468 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 364 [2022-11-20 12:43:51,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 568 transitions, 3684 flow. Second operand has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:43:51,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:43:51,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 364 [2022-11-20 12:43:51,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand