./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 e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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-e04fb08 [2022-11-16 12:41:39,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:41:39,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:41:39,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:41:39,654 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:41:39,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:41:39,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:41:39,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:41:39,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:41:39,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:41:39,677 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:41:39,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:41:39,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:41:39,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:41:39,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:41:39,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:41:39,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:41:39,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:41:39,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:41:39,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:41:39,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:41:39,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:41:39,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:41:39,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:41:39,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:41:39,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:41:39,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:41:39,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:41:39,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:41:39,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:41:39,722 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:41:39,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:41:39,724 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:41:39,725 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:41:39,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:41:39,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:41:39,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:41:39,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:41:39,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:41:39,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:41:39,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:41:39,732 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:41:39,757 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:41:39,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:41:39,758 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:41:39,758 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:41:39,759 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:41:39,759 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:41:39,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:41:39,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:41:39,761 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:41:39,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:41:39,761 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:41:39,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:41:39,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:41:39,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:41:39,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:41:39,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:41:39,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:41:39,763 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:41:39,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:41:39,764 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:41:39,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:41:39,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:41:39,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:41:39,765 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:41:39,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:41:39,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:41:39,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:41:39,766 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:41:39,766 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:41:39,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:41:39,767 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:41:39,767 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:41:39,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:41:39,768 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_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b68e155d55184c39a54e11a2c420443b840324481c8995060134516395f2d120 [2022-11-16 12:41:40,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:41:40,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:41:40,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:41:40,155 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:41:40,156 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:41:40,158 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2022-11-16 12:41:40,249 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/data/57feed001/d2b51be4d04f478aab3c098dc736ca42/FLAG7fb1a4306 [2022-11-16 12:41:40,785 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:41:40,786 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2022-11-16 12:41:40,798 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/data/57feed001/d2b51be4d04f478aab3c098dc736ca42/FLAG7fb1a4306 [2022-11-16 12:41:41,122 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/data/57feed001/d2b51be4d04f478aab3c098dc736ca42 [2022-11-16 12:41:41,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:41:41,130 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:41:41,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:41:41,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:41:41,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:41:41,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:41:41" (1/1) ... [2022-11-16 12:41:41,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47968eef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:41, skipping insertion in model container [2022-11-16 12:41:41,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:41:41" (1/1) ... [2022-11-16 12:41:41,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:41:41,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:41:41,409 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c[3097,3110] [2022-11-16 12:41:41,437 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:41:41,446 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:41:41,496 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c[3097,3110] [2022-11-16 12:41:41,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:41:41,525 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:41:41,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:41 WrapperNode [2022-11-16 12:41:41,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:41:41,526 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:41:41,527 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:41:41,527 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:41:41,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:41" (1/1) ... [2022-11-16 12:41:41,545 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:41" (1/1) ... [2022-11-16 12:41:41,578 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 17, calls inlined = 25, statements flattened = 275 [2022-11-16 12:41:41,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:41:41,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:41:41,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:41:41,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:41:41,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:41" (1/1) ... [2022-11-16 12:41:41,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:41" (1/1) ... [2022-11-16 12:41:41,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:41" (1/1) ... [2022-11-16 12:41:41,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:41" (1/1) ... [2022-11-16 12:41:41,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:41" (1/1) ... [2022-11-16 12:41:41,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:41" (1/1) ... [2022-11-16 12:41:41,612 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:41" (1/1) ... [2022-11-16 12:41:41,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:41" (1/1) ... [2022-11-16 12:41:41,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:41:41,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:41:41,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:41:41,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:41:41,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:41" (1/1) ... [2022-11-16 12:41:41,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:41:41,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:41:41,656 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:41:41,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:41:41,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:41:41,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:41:41,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:41:41,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:41:41,716 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:41:41,717 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:41:41,717 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:41:41,717 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:41:41,717 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 12:41:41,717 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 12:41:41,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:41:41,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:41:41,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:41:41,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:41:41,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:41:41,720 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:41:41,842 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:41:41,855 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:41:42,426 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:41:42,440 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:41:42,440 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-16 12:41:42,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:41:42 BoogieIcfgContainer [2022-11-16 12:41:42,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:41:42,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:41:42,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:41:42,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:41:42,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:41:41" (1/3) ... [2022-11-16 12:41:42,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45af4667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:41:42, skipping insertion in model container [2022-11-16 12:41:42,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:41" (2/3) ... [2022-11-16 12:41:42,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45af4667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:41:42, skipping insertion in model container [2022-11-16 12:41:42,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:41:42" (3/3) ... [2022-11-16 12:41:42,459 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-subst.wvr.c [2022-11-16 12:41:42,475 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:41:42,487 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:41:42,487 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:41:42,487 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:41:42,705 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 12:41:42,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 345 places, 364 transitions, 752 flow [2022-11-16 12:41:43,022 INFO L130 PetriNetUnfolder]: 29/361 cut-off events. [2022-11-16 12:41:43,023 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:41:43,034 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. [2022-11-16 12:41:43,035 INFO L82 GeneralOperation]: Start removeDead. Operand has 345 places, 364 transitions, 752 flow [2022-11-16 12:41:43,047 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 331 places, 350 transitions, 718 flow [2022-11-16 12:41:43,059 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:41:43,066 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;@5821a3a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:41:43,067 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-16 12:41:43,184 INFO L130 PetriNetUnfolder]: 29/349 cut-off events. [2022-11-16 12:41:43,185 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:41:43,185 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:43,186 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] [2022-11-16 12:41:43,188 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)] === [2022-11-16 12:41:43,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:43,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1164257302, now seen corresponding path program 1 times [2022-11-16 12:41:43,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:43,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618431740] [2022-11-16 12:41:43,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:43,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:43,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:43,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:43,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618431740] [2022-11-16 12:41:43,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618431740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:43,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:43,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:41:43,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721915206] [2022-11-16 12:41:43,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:43,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:41:43,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:43,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:41:43,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:41:43,686 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 364 [2022-11-16 12:41:43,690 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) [2022-11-16 12:41:43,692 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:43,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 364 [2022-11-16 12:41:43,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:43,864 INFO L130 PetriNetUnfolder]: 6/327 cut-off events. [2022-11-16 12:41:43,864 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-11-16 12:41:43,869 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. [2022-11-16 12:41:43,872 INFO L137 encePairwiseOnDemand]: 341/364 looper letters, 6 selfloop transitions, 0 changer transitions 8/327 dead transitions. [2022-11-16 12:41:43,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 327 transitions, 684 flow [2022-11-16 12:41:43,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:41:43,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 12:41:43,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 697 transitions. [2022-11-16 12:41:43,904 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9574175824175825 [2022-11-16 12:41:43,905 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 697 transitions. [2022-11-16 12:41:43,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 697 transitions. [2022-11-16 12:41:43,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:43,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 697 transitions. [2022-11-16 12:41:43,923 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) [2022-11-16 12:41:43,936 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) [2022-11-16 12:41:43,937 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) [2022-11-16 12:41:43,939 INFO L175 Difference]: Start difference. First operand has 331 places, 350 transitions, 718 flow. Second operand 2 states and 697 transitions. [2022-11-16 12:41:43,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 327 transitions, 684 flow [2022-11-16 12:41:43,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 327 transitions, 672 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 12:41:43,963 INFO L231 Difference]: Finished difference. Result has 326 places, 319 transitions, 644 flow [2022-11-16 12:41:43,966 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} [2022-11-16 12:41:43,971 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, -5 predicate places. [2022-11-16 12:41:43,972 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 319 transitions, 644 flow [2022-11-16 12:41:43,972 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) [2022-11-16 12:41:43,973 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:43,974 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] [2022-11-16 12:41:43,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:41:43,975 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)] === [2022-11-16 12:41:43,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:43,977 INFO L85 PathProgramCache]: Analyzing trace with hash -487977546, now seen corresponding path program 1 times [2022-11-16 12:41:43,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:43,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721962301] [2022-11-16 12:41:43,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:43,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:44,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:44,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:44,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721962301] [2022-11-16 12:41:44,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721962301] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:44,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:44,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:41:44,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821090915] [2022-11-16 12:41:44,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:44,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:41:44,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:44,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:41:44,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:41:44,628 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 364 [2022-11-16 12:41:44,631 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) [2022-11-16 12:41:44,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:44,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 364 [2022-11-16 12:41:44,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:44,851 INFO L130 PetriNetUnfolder]: 6/337 cut-off events. [2022-11-16 12:41:44,852 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:41:44,853 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. [2022-11-16 12:41:44,855 INFO L137 encePairwiseOnDemand]: 349/364 looper letters, 42 selfloop transitions, 12 changer transitions 0/331 dead transitions. [2022-11-16 12:41:44,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 331 transitions, 776 flow [2022-11-16 12:41:44,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:41:44,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:41:44,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1547 transitions. [2022-11-16 12:41:44,860 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.85 [2022-11-16 12:41:44,860 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1547 transitions. [2022-11-16 12:41:44,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1547 transitions. [2022-11-16 12:41:44,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:44,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1547 transitions. [2022-11-16 12:41:44,866 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) [2022-11-16 12:41:44,870 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) [2022-11-16 12:41:44,872 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) [2022-11-16 12:41:44,872 INFO L175 Difference]: Start difference. First operand has 326 places, 319 transitions, 644 flow. Second operand 5 states and 1547 transitions. [2022-11-16 12:41:44,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 331 transitions, 776 flow [2022-11-16 12:41:44,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 331 transitions, 776 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:41:44,880 INFO L231 Difference]: Finished difference. Result has 323 places, 322 transitions, 692 flow [2022-11-16 12:41:44,881 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} [2022-11-16 12:41:44,882 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, -8 predicate places. [2022-11-16 12:41:44,882 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 322 transitions, 692 flow [2022-11-16 12:41:44,884 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) [2022-11-16 12:41:44,884 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:44,884 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] [2022-11-16 12:41:44,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:41:44,885 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)] === [2022-11-16 12:41:44,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:44,886 INFO L85 PathProgramCache]: Analyzing trace with hash -968534817, now seen corresponding path program 1 times [2022-11-16 12:41:44,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:44,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988550588] [2022-11-16 12:41:44,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:44,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:45,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:41:45,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:45,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988550588] [2022-11-16 12:41:45,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988550588] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:41:45,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602722112] [2022-11-16 12:41:45,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:45,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:41:45,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:41:45,431 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:41:45,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:41:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:45,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:41:45,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:41:45,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:41:45,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:41:45,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:41:45,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602722112] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:41:45,994 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:41:45,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-16 12:41:45,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029000959] [2022-11-16 12:41:45,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:41:45,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:41:45,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:45,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:41:45,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:41:46,004 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 364 [2022-11-16 12:41:46,011 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) [2022-11-16 12:41:46,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:46,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 364 [2022-11-16 12:41:46,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:46,471 INFO L130 PetriNetUnfolder]: 6/364 cut-off events. [2022-11-16 12:41:46,471 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-16 12:41:46,473 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. [2022-11-16 12:41:46,474 INFO L137 encePairwiseOnDemand]: 340/364 looper letters, 45 selfloop transitions, 33 changer transitions 0/352 dead transitions. [2022-11-16 12:41:46,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 352 transitions, 914 flow [2022-11-16 12:41:46,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:41:46,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:41:46,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3329 transitions. [2022-11-16 12:41:46,482 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8314185814185814 [2022-11-16 12:41:46,483 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3329 transitions. [2022-11-16 12:41:46,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3329 transitions. [2022-11-16 12:41:46,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:46,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3329 transitions. [2022-11-16 12:41:46,494 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) [2022-11-16 12:41:46,502 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) [2022-11-16 12:41:46,506 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) [2022-11-16 12:41:46,506 INFO L175 Difference]: Start difference. First operand has 323 places, 322 transitions, 692 flow. Second operand 11 states and 3329 transitions. [2022-11-16 12:41:46,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 352 transitions, 914 flow [2022-11-16 12:41:46,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 352 transitions, 896 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:41:46,515 INFO L231 Difference]: Finished difference. Result has 333 places, 340 transitions, 841 flow [2022-11-16 12:41:46,516 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} [2022-11-16 12:41:46,517 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 2 predicate places. [2022-11-16 12:41:46,517 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 340 transitions, 841 flow [2022-11-16 12:41:46,520 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) [2022-11-16 12:41:46,521 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:46,521 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] [2022-11-16 12:41:46,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:41:46,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:41:46,728 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)] === [2022-11-16 12:41:46,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:46,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1046059625, now seen corresponding path program 2 times [2022-11-16 12:41:46,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:46,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959560908] [2022-11-16 12:41:46,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:46,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:47,307 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-16 12:41:47,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:47,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959560908] [2022-11-16 12:41:47,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959560908] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:41:47,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685604351] [2022-11-16 12:41:47,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:41:47,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:41:47,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:41:47,312 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:41:47,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:41:47,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:41:47,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:41:47,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:41:47,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:41:47,714 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-16 12:41:47,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:41:47,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685604351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:47,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:41:47,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-11-16 12:41:47,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426193237] [2022-11-16 12:41:47,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:47,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:41:47,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:47,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:41:47,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:41:47,731 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 364 [2022-11-16 12:41:47,734 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) [2022-11-16 12:41:47,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:47,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 364 [2022-11-16 12:41:47,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:48,988 INFO L130 PetriNetUnfolder]: 363/2263 cut-off events. [2022-11-16 12:41:48,989 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2022-11-16 12:41:49,007 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. [2022-11-16 12:41:49,025 INFO L137 encePairwiseOnDemand]: 354/364 looper letters, 96 selfloop transitions, 22 changer transitions 4/429 dead transitions. [2022-11-16 12:41:49,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 429 transitions, 1280 flow [2022-11-16 12:41:49,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:41:49,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:41:49,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3500 transitions. [2022-11-16 12:41:49,033 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8741258741258742 [2022-11-16 12:41:49,033 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3500 transitions. [2022-11-16 12:41:49,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3500 transitions. [2022-11-16 12:41:49,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:49,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3500 transitions. [2022-11-16 12:41:49,044 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) [2022-11-16 12:41:49,052 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) [2022-11-16 12:41:49,054 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) [2022-11-16 12:41:49,054 INFO L175 Difference]: Start difference. First operand has 333 places, 340 transitions, 841 flow. Second operand 11 states and 3500 transitions. [2022-11-16 12:41:49,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 429 transitions, 1280 flow [2022-11-16 12:41:49,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 429 transitions, 1255 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-11-16 12:41:49,069 INFO L231 Difference]: Finished difference. Result has 345 places, 358 transitions, 932 flow [2022-11-16 12:41:49,069 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} [2022-11-16 12:41:49,071 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 14 predicate places. [2022-11-16 12:41:49,071 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 358 transitions, 932 flow [2022-11-16 12:41:49,074 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) [2022-11-16 12:41:49,075 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:49,075 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] [2022-11-16 12:41:49,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:41:49,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:41:49,283 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)] === [2022-11-16 12:41:49,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:49,284 INFO L85 PathProgramCache]: Analyzing trace with hash 458989237, now seen corresponding path program 3 times [2022-11-16 12:41:49,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:49,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985811964] [2022-11-16 12:41:49,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:49,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:49,885 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-16 12:41:49,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:49,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985811964] [2022-11-16 12:41:49,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985811964] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:41:49,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795953483] [2022-11-16 12:41:49,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:41:49,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:41:49,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:41:49,892 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:41:49,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:41:50,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-16 12:41:50,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:41:50,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:41:50,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:41:50,422 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-16 12:41:50,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:41:50,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795953483] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:50,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:41:50,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-11-16 12:41:50,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664090909] [2022-11-16 12:41:50,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:50,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:41:50,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:50,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:41:50,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:41:50,429 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 364 [2022-11-16 12:41:50,432 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) [2022-11-16 12:41:50,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:50,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 364 [2022-11-16 12:41:50,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:51,995 INFO L130 PetriNetUnfolder]: 447/2637 cut-off events. [2022-11-16 12:41:51,996 INFO L131 PetriNetUnfolder]: For 467/562 co-relation queries the response was YES. [2022-11-16 12:41:52,019 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 19314 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. [2022-11-16 12:41:52,043 INFO L137 encePairwiseOnDemand]: 352/364 looper letters, 133 selfloop transitions, 48 changer transitions 0/488 dead transitions. [2022-11-16 12:41:52,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 488 transitions, 1738 flow [2022-11-16 12:41:52,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:41:52,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 12:41:52,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 5057 transitions. [2022-11-16 12:41:52,054 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8683035714285714 [2022-11-16 12:41:52,054 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 5057 transitions. [2022-11-16 12:41:52,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 5057 transitions. [2022-11-16 12:41:52,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:52,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 5057 transitions. [2022-11-16 12:41:52,068 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) [2022-11-16 12:41:52,129 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) [2022-11-16 12:41:52,132 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) [2022-11-16 12:41:52,132 INFO L175 Difference]: Start difference. First operand has 345 places, 358 transitions, 932 flow. Second operand 16 states and 5057 transitions. [2022-11-16 12:41:52,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 488 transitions, 1738 flow [2022-11-16 12:41:52,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 488 transitions, 1738 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:41:52,151 INFO L231 Difference]: Finished difference. Result has 369 places, 398 transitions, 1286 flow [2022-11-16 12:41:52,152 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} [2022-11-16 12:41:52,153 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 38 predicate places. [2022-11-16 12:41:52,153 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 398 transitions, 1286 flow [2022-11-16 12:41:52,155 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) [2022-11-16 12:41:52,155 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:52,156 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] [2022-11-16 12:41:52,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:41:52,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:41:52,363 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)] === [2022-11-16 12:41:52,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:52,364 INFO L85 PathProgramCache]: Analyzing trace with hash 729640987, now seen corresponding path program 4 times [2022-11-16 12:41:52,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:52,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839517546] [2022-11-16 12:41:52,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:52,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:52,955 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-16 12:41:52,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:52,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839517546] [2022-11-16 12:41:52,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839517546] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:41:52,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638254667] [2022-11-16 12:41:52,957 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:41:52,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:41:52,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:41:52,958 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:41:52,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:41:53,158 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:41:53,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:41:53,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:41:53,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:41:53,451 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-16 12:41:53,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:41:53,638 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-16 12:41:53,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638254667] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:41:53,639 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:41:53,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-16 12:41:53,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6000966] [2022-11-16 12:41:53,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:41:53,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 12:41:53,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:53,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 12:41:53,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-16 12:41:53,652 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 364 [2022-11-16 12:41:53,667 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) [2022-11-16 12:41:53,668 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:53,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 364 [2022-11-16 12:41:53,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:54,611 INFO L130 PetriNetUnfolder]: 69/1078 cut-off events. [2022-11-16 12:41:54,611 INFO L131 PetriNetUnfolder]: For 358/376 co-relation queries the response was YES. [2022-11-16 12:41:54,619 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. [2022-11-16 12:41:54,624 INFO L137 encePairwiseOnDemand]: 340/364 looper letters, 57 selfloop transitions, 51 changer transitions 0/440 dead transitions. [2022-11-16 12:41:54,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 440 transitions, 1670 flow [2022-11-16 12:41:54,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:41:54,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 12:41:54,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5129 transitions. [2022-11-16 12:41:54,636 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8288623141564319 [2022-11-16 12:41:54,636 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5129 transitions. [2022-11-16 12:41:54,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5129 transitions. [2022-11-16 12:41:54,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:54,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5129 transitions. [2022-11-16 12:41:54,651 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) [2022-11-16 12:41:54,661 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) [2022-11-16 12:41:54,663 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) [2022-11-16 12:41:54,664 INFO L175 Difference]: Start difference. First operand has 369 places, 398 transitions, 1286 flow. Second operand 17 states and 5129 transitions. [2022-11-16 12:41:54,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 440 transitions, 1670 flow [2022-11-16 12:41:54,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 440 transitions, 1656 flow, removed 7 selfloop flow, removed 0 redundant places. [2022-11-16 12:41:54,676 INFO L231 Difference]: Finished difference. Result has 388 places, 419 transitions, 1535 flow [2022-11-16 12:41:54,677 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} [2022-11-16 12:41:54,678 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 57 predicate places. [2022-11-16 12:41:54,678 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 419 transitions, 1535 flow [2022-11-16 12:41:54,681 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) [2022-11-16 12:41:54,681 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:54,681 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] [2022-11-16 12:41:54,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:41:54,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:41:54,892 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)] === [2022-11-16 12:41:54,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:54,893 INFO L85 PathProgramCache]: Analyzing trace with hash 45934657, now seen corresponding path program 5 times [2022-11-16 12:41:54,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:54,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541479497] [2022-11-16 12:41:54,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:54,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:55,650 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-16 12:41:55,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:55,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541479497] [2022-11-16 12:41:55,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541479497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:55,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:55,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:41:55,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382306481] [2022-11-16 12:41:55,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:55,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:41:55,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:55,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:41:55,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:41:55,656 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 364 [2022-11-16 12:41:55,658 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) [2022-11-16 12:41:55,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:55,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 364 [2022-11-16 12:41:55,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:57,794 INFO L130 PetriNetUnfolder]: 630/4136 cut-off events. [2022-11-16 12:41:57,795 INFO L131 PetriNetUnfolder]: For 2820/3242 co-relation queries the response was YES. [2022-11-16 12:41:57,847 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 35303 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. [2022-11-16 12:41:57,876 INFO L137 encePairwiseOnDemand]: 348/364 looper letters, 131 selfloop transitions, 83 changer transitions 3/545 dead transitions. [2022-11-16 12:41:57,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 545 transitions, 2593 flow [2022-11-16 12:41:57,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:41:57,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:41:57,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 4123 transitions. [2022-11-16 12:41:57,886 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.871301775147929 [2022-11-16 12:41:57,886 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 4123 transitions. [2022-11-16 12:41:57,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 4123 transitions. [2022-11-16 12:41:57,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:57,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 4123 transitions. [2022-11-16 12:41:57,898 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) [2022-11-16 12:41:57,906 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) [2022-11-16 12:41:57,908 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) [2022-11-16 12:41:57,909 INFO L175 Difference]: Start difference. First operand has 388 places, 419 transitions, 1535 flow. Second operand 13 states and 4123 transitions. [2022-11-16 12:41:57,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 545 transitions, 2593 flow [2022-11-16 12:41:57,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 545 transitions, 2526 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-11-16 12:41:57,933 INFO L231 Difference]: Finished difference. Result has 402 places, 473 transitions, 2181 flow [2022-11-16 12:41:57,934 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} [2022-11-16 12:41:57,934 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 71 predicate places. [2022-11-16 12:41:57,935 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 473 transitions, 2181 flow [2022-11-16 12:41:57,935 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) [2022-11-16 12:41:57,936 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:57,936 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] [2022-11-16 12:41:57,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:41:57,937 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)] === [2022-11-16 12:41:57,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:57,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1344731889, now seen corresponding path program 6 times [2022-11-16 12:41:57,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:57,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286376737] [2022-11-16 12:41:57,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:57,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:58,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:58,775 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-16 12:41:58,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:58,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286376737] [2022-11-16 12:41:58,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286376737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:58,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:58,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:41:58,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587561895] [2022-11-16 12:41:58,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:58,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:41:58,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:58,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:41:58,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:41:58,786 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 364 [2022-11-16 12:41:58,788 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) [2022-11-16 12:41:58,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:58,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 364 [2022-11-16 12:41:58,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:01,837 INFO L130 PetriNetUnfolder]: 778/5314 cut-off events. [2022-11-16 12:42:01,837 INFO L131 PetriNetUnfolder]: For 6791/7767 co-relation queries the response was YES. [2022-11-16 12:42:01,901 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. [2022-11-16 12:42:01,947 INFO L137 encePairwiseOnDemand]: 353/364 looper letters, 199 selfloop transitions, 92 changer transitions 2/621 dead transitions. [2022-11-16 12:42:01,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 621 transitions, 3709 flow [2022-11-16 12:42:01,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:42:01,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:42:01,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3205 transitions. [2022-11-16 12:42:01,961 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8804945054945055 [2022-11-16 12:42:01,962 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3205 transitions. [2022-11-16 12:42:01,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3205 transitions. [2022-11-16 12:42:01,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:01,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3205 transitions. [2022-11-16 12:42:01,972 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) [2022-11-16 12:42:01,978 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) [2022-11-16 12:42:01,980 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) [2022-11-16 12:42:01,980 INFO L175 Difference]: Start difference. First operand has 402 places, 473 transitions, 2181 flow. Second operand 10 states and 3205 transitions. [2022-11-16 12:42:01,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 621 transitions, 3709 flow [2022-11-16 12:42:02,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 621 transitions, 3657 flow, removed 26 selfloop flow, removed 0 redundant places. [2022-11-16 12:42:02,033 INFO L231 Difference]: Finished difference. Result has 416 places, 508 transitions, 2796 flow [2022-11-16 12:42:02,034 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} [2022-11-16 12:42:02,038 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 85 predicate places. [2022-11-16 12:42:02,039 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 508 transitions, 2796 flow [2022-11-16 12:42:02,041 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) [2022-11-16 12:42:02,041 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:02,042 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] [2022-11-16 12:42:02,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:42:02,043 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)] === [2022-11-16 12:42:02,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:02,043 INFO L85 PathProgramCache]: Analyzing trace with hash -64768181, now seen corresponding path program 7 times [2022-11-16 12:42:02,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:02,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041794322] [2022-11-16 12:42:02,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:02,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:02,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:02,755 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-16 12:42:02,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:02,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041794322] [2022-11-16 12:42:02,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041794322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:02,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:02,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:42:02,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037822318] [2022-11-16 12:42:02,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:02,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:42:02,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:02,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:42:02,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:42:02,761 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 364 [2022-11-16 12:42:02,764 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) [2022-11-16 12:42:02,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:02,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 364 [2022-11-16 12:42:02,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:05,842 INFO L130 PetriNetUnfolder]: 925/6434 cut-off events. [2022-11-16 12:42:05,842 INFO L131 PetriNetUnfolder]: For 10881/12003 co-relation queries the response was YES. [2022-11-16 12:42:05,919 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. [2022-11-16 12:42:05,968 INFO L137 encePairwiseOnDemand]: 353/364 looper letters, 202 selfloop transitions, 120 changer transitions 2/652 dead transitions. [2022-11-16 12:42:05,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 652 transitions, 4435 flow [2022-11-16 12:42:05,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:42:05,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:42:05,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3215 transitions. [2022-11-16 12:42:05,977 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8832417582417582 [2022-11-16 12:42:05,977 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3215 transitions. [2022-11-16 12:42:05,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3215 transitions. [2022-11-16 12:42:05,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:05,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3215 transitions. [2022-11-16 12:42:06,088 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) [2022-11-16 12:42:06,093 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) [2022-11-16 12:42:06,094 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) [2022-11-16 12:42:06,095 INFO L175 Difference]: Start difference. First operand has 416 places, 508 transitions, 2796 flow. Second operand 10 states and 3215 transitions. [2022-11-16 12:42:06,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 652 transitions, 4435 flow [2022-11-16 12:42:06,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 652 transitions, 4325 flow, removed 10 selfloop flow, removed 2 redundant places. [2022-11-16 12:42:06,173 INFO L231 Difference]: Finished difference. Result has 429 places, 546 transitions, 3566 flow [2022-11-16 12:42:06,174 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} [2022-11-16 12:42:06,175 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 98 predicate places. [2022-11-16 12:42:06,175 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 546 transitions, 3566 flow [2022-11-16 12:42:06,176 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) [2022-11-16 12:42:06,176 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:06,177 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] [2022-11-16 12:42:06,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:42:06,177 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)] === [2022-11-16 12:42:06,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:06,178 INFO L85 PathProgramCache]: Analyzing trace with hash -633694079, now seen corresponding path program 8 times [2022-11-16 12:42:06,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:06,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779282009] [2022-11-16 12:42:06,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:06,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:06,599 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-16 12:42:06,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:06,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779282009] [2022-11-16 12:42:06,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779282009] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:06,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:06,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:42:06,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850610713] [2022-11-16 12:42:06,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:06,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:42:06,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:06,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:42:06,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:42:06,604 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 364 [2022-11-16 12:42:06,606 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) [2022-11-16 12:42:06,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:06,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 364 [2022-11-16 12:42:06,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:08,275 INFO L130 PetriNetUnfolder]: 243/3402 cut-off events. [2022-11-16 12:42:08,276 INFO L131 PetriNetUnfolder]: For 6938/7182 co-relation queries the response was YES. [2022-11-16 12:42:08,327 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. [2022-11-16 12:42:08,358 INFO L137 encePairwiseOnDemand]: 357/364 looper letters, 162 selfloop transitions, 18 changer transitions 4/563 dead transitions. [2022-11-16 12:42:08,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 563 transitions, 3987 flow [2022-11-16 12:42:08,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:42:08,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:42:08,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2037 transitions. [2022-11-16 12:42:08,366 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7994505494505495 [2022-11-16 12:42:08,366 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2037 transitions. [2022-11-16 12:42:08,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2037 transitions. [2022-11-16 12:42:08,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:08,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2037 transitions. [2022-11-16 12:42:08,375 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) [2022-11-16 12:42:08,381 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) [2022-11-16 12:42:08,383 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) [2022-11-16 12:42:08,383 INFO L175 Difference]: Start difference. First operand has 429 places, 546 transitions, 3566 flow. Second operand 7 states and 2037 transitions. [2022-11-16 12:42:08,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 563 transitions, 3987 flow [2022-11-16 12:42:08,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 563 transitions, 3927 flow, removed 30 selfloop flow, removed 0 redundant places. [2022-11-16 12:42:08,447 INFO L231 Difference]: Finished difference. Result has 439 places, 547 transitions, 3573 flow [2022-11-16 12:42:08,448 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} [2022-11-16 12:42:08,449 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 108 predicate places. [2022-11-16 12:42:08,450 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 547 transitions, 3573 flow [2022-11-16 12:42:08,450 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) [2022-11-16 12:42:08,451 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:08,451 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] [2022-11-16 12:42:08,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:42:08,452 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)] === [2022-11-16 12:42:08,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:08,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1802641237, now seen corresponding path program 1 times [2022-11-16 12:42:08,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:08,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707776287] [2022-11-16 12:42:08,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:08,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:09,652 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-16 12:42:09,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:09,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707776287] [2022-11-16 12:42:09,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707776287] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:42:09,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352166833] [2022-11-16 12:42:09,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:09,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:09,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:42:09,655 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:42:09,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:42:09,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:09,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:42:09,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:42:10,273 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-11-16 12:42:10,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:42:10,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352166833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:10,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:42:10,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 16 [2022-11-16 12:42:10,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664280687] [2022-11-16 12:42:10,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:10,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:42:10,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:10,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:42:10,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:42:10,281 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 364 [2022-11-16 12:42:10,285 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) [2022-11-16 12:42:10,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:10,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 364 [2022-11-16 12:42:10,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:30,793 INFO L130 PetriNetUnfolder]: 11001/56502 cut-off events. [2022-11-16 12:42:30,793 INFO L131 PetriNetUnfolder]: For 55388/58099 co-relation queries the response was YES. [2022-11-16 12:42:31,369 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 807900 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. [2022-11-16 12:42:31,617 INFO L137 encePairwiseOnDemand]: 353/364 looper letters, 153 selfloop transitions, 25 changer transitions 12/670 dead transitions. [2022-11-16 12:42:31,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 670 transitions, 4246 flow [2022-11-16 12:42:31,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:42:31,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 12:42:31,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4473 transitions. [2022-11-16 12:42:31,626 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7680288461538461 [2022-11-16 12:42:31,627 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4473 transitions. [2022-11-16 12:42:31,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4473 transitions. [2022-11-16 12:42:31,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:31,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4473 transitions. [2022-11-16 12:42:31,639 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) [2022-11-16 12:42:31,651 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) [2022-11-16 12:42:31,654 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) [2022-11-16 12:42:31,655 INFO L175 Difference]: Start difference. First operand has 439 places, 547 transitions, 3573 flow. Second operand 16 states and 4473 transitions. [2022-11-16 12:42:31,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 670 transitions, 4246 flow [2022-11-16 12:42:32,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 670 transitions, 4214 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-11-16 12:42:32,284 INFO L231 Difference]: Finished difference. Result has 457 places, 568 transitions, 3684 flow [2022-11-16 12:42:32,285 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} [2022-11-16 12:42:32,285 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 126 predicate places. [2022-11-16 12:42:32,286 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 568 transitions, 3684 flow [2022-11-16 12:42:32,287 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) [2022-11-16 12:42:32,287 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:32,287 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] [2022-11-16 12:42:32,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:42:32,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:32,494 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)] === [2022-11-16 12:42:32,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:32,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1568314935, now seen corresponding path program 2 times [2022-11-16 12:42:32,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:32,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049073884] [2022-11-16 12:42:32,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:32,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:32,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:33,501 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-16 12:42:33,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:33,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049073884] [2022-11-16 12:42:33,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049073884] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:42:33,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682482231] [2022-11-16 12:42:33,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:42:33,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:33,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:42:33,507 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:42:33,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a91d2dc-81f5-4efc-8542-afcf273c0e16/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:42:33,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:42:33,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:42:33,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:42:33,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:42:33,986 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-11-16 12:42:33,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:42:33,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682482231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:33,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:42:33,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 16 [2022-11-16 12:42:33,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738234769] [2022-11-16 12:42:33,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:33,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:42:33,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:33,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:42:33,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:42:33,993 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 364 [2022-11-16 12:42:33,995 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) [2022-11-16 12:42:33,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:33,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 364 [2022-11-16 12:42:33,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand