./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe035_power.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e046ca-4e2e-43b3-9d61-6f7bd8b6b15e/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e046ca-4e2e-43b3-9d61-6f7bd8b6b15e/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e046ca-4e2e-43b3-9d61-6f7bd8b6b15e/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e046ca-4e2e-43b3-9d61-6f7bd8b6b15e/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe035_power.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e046ca-4e2e-43b3-9d61-6f7bd8b6b15e/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e046ca-4e2e-43b3-9d61-6f7bd8b6b15e/bin/uautomizer-vX5HgA9Q3a --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 6415bffc70cf05f8f6460106962f2f9c59b321fd2fc94a45894cc3c1f3d85b66 --- 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-b5237d8 [2022-11-21 16:40:46,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:40:46,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:40:46,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:40:46,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:40:46,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:40:46,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:40:46,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:40:46,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:40:46,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:40:46,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:40:46,657 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:40:46,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:40:46,658 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:40:46,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:40:46,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:40:46,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:40:46,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:40:46,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:40:46,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:40:46,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:40:46,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:40:46,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:40:46,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:40:46,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:40:46,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:40:46,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:40:46,682 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:40:46,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:40:46,684 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:40:46,684 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:40:46,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:40:46,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:40:46,687 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:40:46,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:40:46,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:40:46,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:40:46,691 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:40:46,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:40:46,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:40:46,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:40:46,695 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e046ca-4e2e-43b3-9d61-6f7bd8b6b15e/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 16:40:46,722 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:40:46,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:40:46,723 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:40:46,723 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:40:46,724 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:40:46,724 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:40:46,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:40:46,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:40:46,726 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:40:46,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:40:46,726 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:40:46,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:40:46,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:40:46,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:40:46,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:40:46,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:40:46,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:40:46,728 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:40:46,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:40:46,728 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:40:46,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:40:46,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:40:46,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:40:46,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:40:46,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:40:46,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:40:46,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:40:46,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:40:46,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:40:46,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:40:46,731 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:40:46,732 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:40:46,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:40:46,732 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_48e046ca-4e2e-43b3-9d61-6f7bd8b6b15e/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e046ca-4e2e-43b3-9d61-6f7bd8b6b15e/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6415bffc70cf05f8f6460106962f2f9c59b321fd2fc94a45894cc3c1f3d85b66 [2022-11-21 16:40:47,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:40:47,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:40:47,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:40:47,111 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:40:47,112 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:40:47,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e046ca-4e2e-43b3-9d61-6f7bd8b6b15e/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/pthread-wmm/safe035_power.i [2022-11-21 16:40:50,358 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:40:50,690 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:40:50,691 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e046ca-4e2e-43b3-9d61-6f7bd8b6b15e/sv-benchmarks/c/pthread-wmm/safe035_power.i [2022-11-21 16:40:50,709 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e046ca-4e2e-43b3-9d61-6f7bd8b6b15e/bin/uautomizer-vX5HgA9Q3a/data/0c4012413/e9943b64e7cd4fe9b5a021e0726e612a/FLAGf3decaa18 [2022-11-21 16:40:50,739 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e046ca-4e2e-43b3-9d61-6f7bd8b6b15e/bin/uautomizer-vX5HgA9Q3a/data/0c4012413/e9943b64e7cd4fe9b5a021e0726e612a [2022-11-21 16:40:50,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:40:50,744 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:40:50,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:40:50,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:40:50,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:40:50,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:40:50" (1/1) ... [2022-11-21 16:40:50,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24a3e80c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:50, skipping insertion in model container [2022-11-21 16:40:50,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:40:50" (1/1) ... [2022-11-21 16:40:50,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:40:50,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:40:51,100 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e046ca-4e2e-43b3-9d61-6f7bd8b6b15e/sv-benchmarks/c/pthread-wmm/safe035_power.i[947,960] [2022-11-21 16:40:51,452 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:40:51,471 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:40:51,484 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e046ca-4e2e-43b3-9d61-6f7bd8b6b15e/sv-benchmarks/c/pthread-wmm/safe035_power.i[947,960] [2022-11-21 16:40:51,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:40:51,624 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:40:51,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:51 WrapperNode [2022-11-21 16:40:51,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:40:51,627 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:40:51,627 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:40:51,627 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:40:51,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:51" (1/1) ... [2022-11-21 16:40:51,672 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:51" (1/1) ... [2022-11-21 16:40:51,727 INFO L138 Inliner]: procedures = 176, calls = 60, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 168 [2022-11-21 16:40:51,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:40:51,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:40:51,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:40:51,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:40:51,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:51" (1/1) ... [2022-11-21 16:40:51,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:51" (1/1) ... [2022-11-21 16:40:51,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:51" (1/1) ... [2022-11-21 16:40:51,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:51" (1/1) ... [2022-11-21 16:40:51,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:51" (1/1) ... [2022-11-21 16:40:51,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:51" (1/1) ... [2022-11-21 16:40:51,798 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:51" (1/1) ... [2022-11-21 16:40:51,801 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:51" (1/1) ... [2022-11-21 16:40:51,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:40:51,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:40:51,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:40:51,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:40:51,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:51" (1/1) ... [2022-11-21 16:40:51,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:40:51,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e046ca-4e2e-43b3-9d61-6f7bd8b6b15e/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:40:51,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e046ca-4e2e-43b3-9d61-6f7bd8b6b15e/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:40:51,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e046ca-4e2e-43b3-9d61-6f7bd8b6b15e/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:40:51,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:40:51,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 16:40:51,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:40:51,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:40:51,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:40:51,937 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-21 16:40:51,937 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-21 16:40:51,937 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-21 16:40:51,939 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-21 16:40:51,939 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-21 16:40:51,939 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-21 16:40:51,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:40:51,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 16:40:51,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:40:51,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:40:51,942 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 16:40:52,216 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:40:52,218 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:40:52,813 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:40:53,176 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:40:53,176 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 16:40:53,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:40:53 BoogieIcfgContainer [2022-11-21 16:40:53,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:40:53,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:40:53,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:40:53,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:40:53,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:40:50" (1/3) ... [2022-11-21 16:40:53,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e31c3d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:40:53, skipping insertion in model container [2022-11-21 16:40:53,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:51" (2/3) ... [2022-11-21 16:40:53,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e31c3d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:40:53, skipping insertion in model container [2022-11-21 16:40:53,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:40:53" (3/3) ... [2022-11-21 16:40:53,191 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_power.i [2022-11-21 16:40:53,202 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:40:53,214 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:40:53,215 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-21 16:40:53,215 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:40:53,284 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-21 16:40:53,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 119 transitions, 253 flow [2022-11-21 16:40:53,453 INFO L130 PetriNetUnfolder]: 2/116 cut-off events. [2022-11-21 16:40:53,453 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:40:53,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 116 events. 2/116 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2022-11-21 16:40:53,462 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 119 transitions, 253 flow [2022-11-21 16:40:53,470 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 116 transitions, 241 flow [2022-11-21 16:40:53,484 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:40:53,492 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;@42bdad8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:40:53,492 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-21 16:40:53,518 INFO L130 PetriNetUnfolder]: 0/77 cut-off events. [2022-11-21 16:40:53,518 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:40:53,519 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:53,519 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] [2022-11-21 16:40:53,520 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 16:40:53,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:53,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1597233866, now seen corresponding path program 1 times [2022-11-21 16:40:53,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:53,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347805766] [2022-11-21 16:40:53,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:53,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:54,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:54,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:54,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347805766] [2022-11-21 16:40:54,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347805766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:54,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:54,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:40:54,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683803313] [2022-11-21 16:40:54,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:54,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:40:54,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:54,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:40:54,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:40:54,427 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 119 [2022-11-21 16:40:54,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 116 transitions, 241 flow. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:54,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:54,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 119 [2022-11-21 16:40:54,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:55,147 INFO L130 PetriNetUnfolder]: 359/1823 cut-off events. [2022-11-21 16:40:55,147 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-21 16:40:55,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2415 conditions, 1823 events. 359/1823 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 15946 event pairs, 131 based on Foata normal form. 92/1812 useless extension candidates. Maximal degree in co-relation 2362. Up to 445 conditions per place. [2022-11-21 16:40:55,187 INFO L137 encePairwiseOnDemand]: 114/119 looper letters, 20 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2022-11-21 16:40:55,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 119 transitions, 291 flow [2022-11-21 16:40:55,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:40:55,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:40:55,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 327 transitions. [2022-11-21 16:40:55,210 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9159663865546218 [2022-11-21 16:40:55,211 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 327 transitions. [2022-11-21 16:40:55,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 327 transitions. [2022-11-21 16:40:55,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:55,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 327 transitions. [2022-11-21 16:40:55,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:55,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:55,232 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:55,234 INFO L175 Difference]: Start difference. First operand has 124 places, 116 transitions, 241 flow. Second operand 3 states and 327 transitions. [2022-11-21 16:40:55,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 119 transitions, 291 flow [2022-11-21 16:40:55,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 119 transitions, 288 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 16:40:55,245 INFO L231 Difference]: Finished difference. Result has 121 places, 112 transitions, 234 flow [2022-11-21 16:40:55,247 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=121, PETRI_TRANSITIONS=112} [2022-11-21 16:40:55,254 INFO L288 CegarLoopForPetriNet]: 124 programPoint places, -3 predicate places. [2022-11-21 16:40:55,254 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 112 transitions, 234 flow [2022-11-21 16:40:55,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:55,256 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:55,256 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] [2022-11-21 16:40:55,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:40:55,256 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 16:40:55,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:55,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1348983417, now seen corresponding path program 1 times [2022-11-21 16:40:55,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:55,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476932199] [2022-11-21 16:40:55,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:55,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:55,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:55,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:55,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476932199] [2022-11-21 16:40:55,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476932199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:55,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:55,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:40:55,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148150565] [2022-11-21 16:40:55,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:55,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:40:55,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:55,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:40:55,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:40:55,847 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 119 [2022-11-21 16:40:55,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 112 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:55,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:55,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 119 [2022-11-21 16:40:55,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:57,105 INFO L130 PetriNetUnfolder]: 1143/2848 cut-off events. [2022-11-21 16:40:57,106 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2022-11-21 16:40:57,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4692 conditions, 2848 events. 1143/2848 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 21988 event pairs, 206 based on Foata normal form. 0/2781 useless extension candidates. Maximal degree in co-relation 4639. Up to 561 conditions per place. [2022-11-21 16:40:57,125 INFO L137 encePairwiseOnDemand]: 113/119 looper letters, 24 selfloop transitions, 2 changer transitions 63/169 dead transitions. [2022-11-21 16:40:57,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 169 transitions, 510 flow [2022-11-21 16:40:57,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:40:57,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 16:40:57,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 926 transitions. [2022-11-21 16:40:57,129 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8646125116713352 [2022-11-21 16:40:57,129 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 926 transitions. [2022-11-21 16:40:57,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 926 transitions. [2022-11-21 16:40:57,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:57,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 926 transitions. [2022-11-21 16:40:57,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 102.88888888888889) internal successors, (926), 9 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:57,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 119.0) internal successors, (1190), 10 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:57,174 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 119.0) internal successors, (1190), 10 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:57,174 INFO L175 Difference]: Start difference. First operand has 121 places, 112 transitions, 234 flow. Second operand 9 states and 926 transitions. [2022-11-21 16:40:57,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 169 transitions, 510 flow [2022-11-21 16:40:57,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 169 transitions, 500 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 16:40:57,179 INFO L231 Difference]: Finished difference. Result has 134 places, 100 transitions, 226 flow [2022-11-21 16:40:57,179 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=226, PETRI_PLACES=134, PETRI_TRANSITIONS=100} [2022-11-21 16:40:57,180 INFO L288 CegarLoopForPetriNet]: 124 programPoint places, 10 predicate places. [2022-11-21 16:40:57,181 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 100 transitions, 226 flow [2022-11-21 16:40:57,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:57,181 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:57,182 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] [2022-11-21 16:40:57,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:40:57,182 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 16:40:57,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:57,183 INFO L85 PathProgramCache]: Analyzing trace with hash 478162548, now seen corresponding path program 1 times [2022-11-21 16:40:57,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:57,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849570415] [2022-11-21 16:40:57,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:57,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:58,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:58,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:58,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849570415] [2022-11-21 16:40:58,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849570415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:58,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:58,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:40:58,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932059986] [2022-11-21 16:40:58,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:58,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:40:58,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:58,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:40:58,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:40:58,714 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 119 [2022-11-21 16:40:58,715 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 100 transitions, 226 flow. Second operand has 8 states, 8 states have (on average 92.125) internal successors, (737), 8 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:58,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:58,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 119 [2022-11-21 16:40:58,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:41:00,037 INFO L130 PetriNetUnfolder]: 1189/2301 cut-off events. [2022-11-21 16:41:00,038 INFO L131 PetriNetUnfolder]: For 478/478 co-relation queries the response was YES. [2022-11-21 16:41:00,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4722 conditions, 2301 events. 1189/2301 cut-off events. For 478/478 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 14041 event pairs, 463 based on Foata normal form. 47/2261 useless extension candidates. Maximal degree in co-relation 4659. Up to 1134 conditions per place. [2022-11-21 16:41:00,055 INFO L137 encePairwiseOnDemand]: 105/119 looper letters, 26 selfloop transitions, 15 changer transitions 49/166 dead transitions. [2022-11-21 16:41:00,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 166 transitions, 559 flow [2022-11-21 16:41:00,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:41:00,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 16:41:00,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 992 transitions. [2022-11-21 16:41:00,060 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8336134453781513 [2022-11-21 16:41:00,061 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 992 transitions. [2022-11-21 16:41:00,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 992 transitions. [2022-11-21 16:41:00,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:41:00,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 992 transitions. [2022-11-21 16:41:00,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 99.2) internal successors, (992), 10 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:00,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:00,069 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:00,069 INFO L175 Difference]: Start difference. First operand has 134 places, 100 transitions, 226 flow. Second operand 10 states and 992 transitions. [2022-11-21 16:41:00,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 166 transitions, 559 flow [2022-11-21 16:41:00,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 166 transitions, 525 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-11-21 16:41:00,097 INFO L231 Difference]: Finished difference. Result has 125 places, 114 transitions, 328 flow [2022-11-21 16:41:00,098 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=328, PETRI_PLACES=125, PETRI_TRANSITIONS=114} [2022-11-21 16:41:00,103 INFO L288 CegarLoopForPetriNet]: 124 programPoint places, 1 predicate places. [2022-11-21 16:41:00,103 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 114 transitions, 328 flow [2022-11-21 16:41:00,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 92.125) internal successors, (737), 8 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:00,105 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:41:00,106 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] [2022-11-21 16:41:00,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:41:00,106 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 16:41:00,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:41:00,107 INFO L85 PathProgramCache]: Analyzing trace with hash -2081388836, now seen corresponding path program 2 times [2022-11-21 16:41:00,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:41:00,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293398159] [2022-11-21 16:41:00,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:41:00,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:41:00,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:41:01,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:41:01,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:41:01,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293398159] [2022-11-21 16:41:01,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293398159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:41:01,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:41:01,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:41:01,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963405567] [2022-11-21 16:41:01,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:41:01,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:41:01,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:41:01,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:41:01,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:41:01,842 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 119 [2022-11-21 16:41:01,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 114 transitions, 328 flow. Second operand has 9 states, 9 states have (on average 91.0) internal successors, (819), 9 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:01,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:41:01,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 119 [2022-11-21 16:41:01,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:41:03,442 INFO L130 PetriNetUnfolder]: 1431/2726 cut-off events. [2022-11-21 16:41:03,442 INFO L131 PetriNetUnfolder]: For 4532/10172 co-relation queries the response was YES. [2022-11-21 16:41:03,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8908 conditions, 2726 events. 1431/2726 cut-off events. For 4532/10172 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 16752 event pairs, 60 based on Foata normal form. 73/2696 useless extension candidates. Maximal degree in co-relation 8843. Up to 1075 conditions per place. [2022-11-21 16:41:03,468 INFO L137 encePairwiseOnDemand]: 104/119 looper letters, 35 selfloop transitions, 23 changer transitions 49/182 dead transitions. [2022-11-21 16:41:03,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 182 transitions, 914 flow [2022-11-21 16:41:03,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 16:41:03,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-21 16:41:03,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1177 transitions. [2022-11-21 16:41:03,473 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8242296918767507 [2022-11-21 16:41:03,473 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1177 transitions. [2022-11-21 16:41:03,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1177 transitions. [2022-11-21 16:41:03,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:41:03,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1177 transitions. [2022-11-21 16:41:03,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 98.08333333333333) internal successors, (1177), 12 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:03,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 119.0) internal successors, (1547), 13 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) [2022-11-21 16:41:03,481 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 119.0) internal successors, (1547), 13 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) [2022-11-21 16:41:03,482 INFO L175 Difference]: Start difference. First operand has 125 places, 114 transitions, 328 flow. Second operand 12 states and 1177 transitions. [2022-11-21 16:41:03,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 182 transitions, 914 flow [2022-11-21 16:41:03,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 182 transitions, 900 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-11-21 16:41:03,496 INFO L231 Difference]: Finished difference. Result has 134 places, 121 transitions, 485 flow [2022-11-21 16:41:03,496 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=485, PETRI_PLACES=134, PETRI_TRANSITIONS=121} [2022-11-21 16:41:03,497 INFO L288 CegarLoopForPetriNet]: 124 programPoint places, 10 predicate places. [2022-11-21 16:41:03,498 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 121 transitions, 485 flow [2022-11-21 16:41:03,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 91.0) internal successors, (819), 9 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:03,498 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:41:03,499 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] [2022-11-21 16:41:03,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:41:03,499 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 16:41:03,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:41:03,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1923942154, now seen corresponding path program 3 times [2022-11-21 16:41:03,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:41:03,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42158700] [2022-11-21 16:41:03,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:41:03,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:41:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:41:05,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:41:05,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:41:05,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42158700] [2022-11-21 16:41:05,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42158700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:41:05,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:41:05,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 16:41:05,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560281749] [2022-11-21 16:41:05,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:41:05,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 16:41:05,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:41:05,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 16:41:05,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:41:05,770 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 119 [2022-11-21 16:41:05,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 121 transitions, 485 flow. Second operand has 11 states, 11 states have (on average 88.81818181818181) internal successors, (977), 11 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:05,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:41:05,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 119 [2022-11-21 16:41:05,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:41:07,848 INFO L130 PetriNetUnfolder]: 1788/3529 cut-off events. [2022-11-21 16:41:07,848 INFO L131 PetriNetUnfolder]: For 22471/40005 co-relation queries the response was YES. [2022-11-21 16:41:07,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17405 conditions, 3529 events. 1788/3529 cut-off events. For 22471/40005 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 25150 event pairs, 555 based on Foata normal form. 66/3476 useless extension candidates. Maximal degree in co-relation 17332. Up to 1697 conditions per place. [2022-11-21 16:41:07,901 INFO L137 encePairwiseOnDemand]: 105/119 looper letters, 54 selfloop transitions, 18 changer transitions 52/197 dead transitions. [2022-11-21 16:41:07,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 197 transitions, 1553 flow [2022-11-21 16:41:07,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 16:41:07,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-21 16:41:07,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1150 transitions. [2022-11-21 16:41:07,907 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8053221288515406 [2022-11-21 16:41:07,907 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1150 transitions. [2022-11-21 16:41:07,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1150 transitions. [2022-11-21 16:41:07,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:41:07,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1150 transitions. [2022-11-21 16:41:07,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 95.83333333333333) internal successors, (1150), 12 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:07,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 119.0) internal successors, (1547), 13 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) [2022-11-21 16:41:07,916 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 119.0) internal successors, (1547), 13 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) [2022-11-21 16:41:07,916 INFO L175 Difference]: Start difference. First operand has 134 places, 121 transitions, 485 flow. Second operand 12 states and 1150 transitions. [2022-11-21 16:41:07,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 197 transitions, 1553 flow [2022-11-21 16:41:07,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 197 transitions, 1474 flow, removed 23 selfloop flow, removed 7 redundant places. [2022-11-21 16:41:07,952 INFO L231 Difference]: Finished difference. Result has 140 places, 124 transitions, 560 flow [2022-11-21 16:41:07,953 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=560, PETRI_PLACES=140, PETRI_TRANSITIONS=124} [2022-11-21 16:41:07,957 INFO L288 CegarLoopForPetriNet]: 124 programPoint places, 16 predicate places. [2022-11-21 16:41:07,958 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 124 transitions, 560 flow [2022-11-21 16:41:07,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 88.81818181818181) internal successors, (977), 11 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:07,959 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:41:07,959 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] [2022-11-21 16:41:07,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:41:07,961 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 16:41:07,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:41:07,963 INFO L85 PathProgramCache]: Analyzing trace with hash -929737965, now seen corresponding path program 1 times [2022-11-21 16:41:07,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:41:07,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578200021] [2022-11-21 16:41:07,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:41:07,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:41:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:41:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:41:08,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:41:08,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578200021] [2022-11-21 16:41:08,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578200021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:41:08,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:41:08,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:41:08,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630645742] [2022-11-21 16:41:08,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:41:08,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:41:08,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:41:08,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:41:08,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:41:08,348 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 119 [2022-11-21 16:41:08,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 124 transitions, 560 flow. Second operand has 6 states, 6 states have (on average 92.5) internal successors, (555), 6 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:08,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:41:08,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 119 [2022-11-21 16:41:08,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:41:12,493 INFO L130 PetriNetUnfolder]: 8015/14687 cut-off events. [2022-11-21 16:41:12,494 INFO L131 PetriNetUnfolder]: For 78577/80267 co-relation queries the response was YES. [2022-11-21 16:41:12,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54472 conditions, 14687 events. 8015/14687 cut-off events. For 78577/80267 co-relation queries the response was YES. Maximal size of possible extension queue 888. Compared 125057 event pairs, 521 based on Foata normal form. 1/14321 useless extension candidates. Maximal degree in co-relation 54399. Up to 3943 conditions per place. [2022-11-21 16:41:12,628 INFO L137 encePairwiseOnDemand]: 109/119 looper letters, 98 selfloop transitions, 7 changer transitions 120/303 dead transitions. [2022-11-21 16:41:12,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 303 transitions, 2338 flow [2022-11-21 16:41:12,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:41:12,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 16:41:12,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1022 transitions. [2022-11-21 16:41:12,633 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8588235294117647 [2022-11-21 16:41:12,633 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1022 transitions. [2022-11-21 16:41:12,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1022 transitions. [2022-11-21 16:41:12,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:41:12,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1022 transitions. [2022-11-21 16:41:12,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 102.2) internal successors, (1022), 10 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:12,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:12,641 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:12,641 INFO L175 Difference]: Start difference. First operand has 140 places, 124 transitions, 560 flow. Second operand 10 states and 1022 transitions. [2022-11-21 16:41:12,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 303 transitions, 2338 flow [2022-11-21 16:41:12,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 303 transitions, 2162 flow, removed 58 selfloop flow, removed 12 redundant places. [2022-11-21 16:41:12,720 INFO L231 Difference]: Finished difference. Result has 137 places, 128 transitions, 558 flow [2022-11-21 16:41:12,721 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=558, PETRI_PLACES=137, PETRI_TRANSITIONS=128} [2022-11-21 16:41:12,725 INFO L288 CegarLoopForPetriNet]: 124 programPoint places, 13 predicate places. [2022-11-21 16:41:12,725 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 128 transitions, 558 flow [2022-11-21 16:41:12,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.5) internal successors, (555), 6 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:12,726 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:41:12,726 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] [2022-11-21 16:41:12,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:41:12,727 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 16:41:12,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:41:12,727 INFO L85 PathProgramCache]: Analyzing trace with hash 896882902, now seen corresponding path program 1 times [2022-11-21 16:41:12,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:41:12,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768994075] [2022-11-21 16:41:12,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:41:12,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:41:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:41:13,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:41:13,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:41:13,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768994075] [2022-11-21 16:41:13,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768994075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:41:13,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:41:13,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:41:13,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559677333] [2022-11-21 16:41:13,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:41:13,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:41:13,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:41:13,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:41:13,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:41:13,336 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 119 [2022-11-21 16:41:13,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 128 transitions, 558 flow. Second operand has 7 states, 7 states have (on average 92.42857142857143) internal successors, (647), 7 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:13,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:41:13,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 119 [2022-11-21 16:41:13,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:41:15,538 INFO L130 PetriNetUnfolder]: 2722/6041 cut-off events. [2022-11-21 16:41:15,538 INFO L131 PetriNetUnfolder]: For 23871/24505 co-relation queries the response was YES. [2022-11-21 16:41:15,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23076 conditions, 6041 events. 2722/6041 cut-off events. For 23871/24505 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 52949 event pairs, 360 based on Foata normal form. 184/6161 useless extension candidates. Maximal degree in co-relation 23006. Up to 1322 conditions per place. [2022-11-21 16:41:15,581 INFO L137 encePairwiseOnDemand]: 109/119 looper letters, 100 selfloop transitions, 18 changer transitions 93/289 dead transitions. [2022-11-21 16:41:15,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 289 transitions, 2206 flow [2022-11-21 16:41:15,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 16:41:15,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 16:41:15,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1126 transitions. [2022-11-21 16:41:15,586 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8601986249045073 [2022-11-21 16:41:15,587 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1126 transitions. [2022-11-21 16:41:15,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1126 transitions. [2022-11-21 16:41:15,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:41:15,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1126 transitions. [2022-11-21 16:41:15,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 102.36363636363636) internal successors, (1126), 11 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:15,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 119.0) internal successors, (1428), 12 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:15,596 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 119.0) internal successors, (1428), 12 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:15,597 INFO L175 Difference]: Start difference. First operand has 137 places, 128 transitions, 558 flow. Second operand 11 states and 1126 transitions. [2022-11-21 16:41:15,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 289 transitions, 2206 flow [2022-11-21 16:41:15,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 289 transitions, 2190 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-21 16:41:15,639 INFO L231 Difference]: Finished difference. Result has 145 places, 135 transitions, 653 flow [2022-11-21 16:41:15,640 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=653, PETRI_PLACES=145, PETRI_TRANSITIONS=135} [2022-11-21 16:41:15,641 INFO L288 CegarLoopForPetriNet]: 124 programPoint places, 21 predicate places. [2022-11-21 16:41:15,641 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 135 transitions, 653 flow [2022-11-21 16:41:15,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 92.42857142857143) internal successors, (647), 7 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:15,642 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:41:15,642 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] [2022-11-21 16:41:15,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:41:15,643 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 16:41:15,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:41:15,644 INFO L85 PathProgramCache]: Analyzing trace with hash 257814296, now seen corresponding path program 1 times [2022-11-21 16:41:15,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:41:15,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471318269] [2022-11-21 16:41:15,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:41:15,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:41:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:41:18,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:41:18,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:41:18,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471318269] [2022-11-21 16:41:18,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471318269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:41:18,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:41:18,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-21 16:41:18,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590779444] [2022-11-21 16:41:18,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:41:18,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 16:41:18,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:41:18,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 16:41:18,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-11-21 16:41:18,459 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2022-11-21 16:41:18,462 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 135 transitions, 653 flow. Second operand has 16 states, 16 states have (on average 86.625) internal successors, (1386), 16 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:18,462 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:41:18,462 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2022-11-21 16:41:18,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:41:20,940 INFO L130 PetriNetUnfolder]: 693/3364 cut-off events. [2022-11-21 16:41:20,940 INFO L131 PetriNetUnfolder]: For 10285/11076 co-relation queries the response was YES. [2022-11-21 16:41:20,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11605 conditions, 3364 events. 693/3364 cut-off events. For 10285/11076 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 37346 event pairs, 52 based on Foata normal form. 28/3224 useless extension candidates. Maximal degree in co-relation 11522. Up to 812 conditions per place. [2022-11-21 16:41:20,960 INFO L137 encePairwiseOnDemand]: 102/119 looper letters, 41 selfloop transitions, 22 changer transitions 74/227 dead transitions. [2022-11-21 16:41:20,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 227 transitions, 1861 flow [2022-11-21 16:41:20,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 16:41:20,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-21 16:41:20,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1812 transitions. [2022-11-21 16:41:20,969 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.761344537815126 [2022-11-21 16:41:20,969 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1812 transitions. [2022-11-21 16:41:20,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1812 transitions. [2022-11-21 16:41:20,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:41:20,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1812 transitions. [2022-11-21 16:41:20,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 90.6) internal successors, (1812), 20 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:20,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 119.0) internal successors, (2499), 21 states have internal predecessors, (2499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:20,984 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 119.0) internal successors, (2499), 21 states have internal predecessors, (2499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:20,984 INFO L175 Difference]: Start difference. First operand has 145 places, 135 transitions, 653 flow. Second operand 20 states and 1812 transitions. [2022-11-21 16:41:20,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 227 transitions, 1861 flow [2022-11-21 16:41:21,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 227 transitions, 1791 flow, removed 24 selfloop flow, removed 4 redundant places. [2022-11-21 16:41:21,132 INFO L231 Difference]: Finished difference. Result has 172 places, 142 transitions, 777 flow [2022-11-21 16:41:21,132 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=777, PETRI_PLACES=172, PETRI_TRANSITIONS=142} [2022-11-21 16:41:21,133 INFO L288 CegarLoopForPetriNet]: 124 programPoint places, 48 predicate places. [2022-11-21 16:41:21,133 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 142 transitions, 777 flow [2022-11-21 16:41:21,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 86.625) internal successors, (1386), 16 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:21,134 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:41:21,134 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] [2022-11-21 16:41:21,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:41:21,135 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 16:41:21,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:41:21,136 INFO L85 PathProgramCache]: Analyzing trace with hash -222746942, now seen corresponding path program 2 times [2022-11-21 16:41:21,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:41:21,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393744404] [2022-11-21 16:41:21,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:41:21,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:41:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:41:21,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:41:21,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:41:21,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393744404] [2022-11-21 16:41:21,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393744404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:41:21,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:41:21,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:41:21,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609924031] [2022-11-21 16:41:21,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:41:21,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:41:21,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:41:21,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:41:21,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:41:21,560 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 119 [2022-11-21 16:41:21,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 142 transitions, 777 flow. Second operand has 8 states, 8 states have (on average 92.5) internal successors, (740), 8 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:21,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:41:21,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 119 [2022-11-21 16:41:21,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:41:22,562 INFO L130 PetriNetUnfolder]: 801/1939 cut-off events. [2022-11-21 16:41:22,562 INFO L131 PetriNetUnfolder]: For 14328/14332 co-relation queries the response was YES. [2022-11-21 16:41:22,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9042 conditions, 1939 events. 801/1939 cut-off events. For 14328/14332 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 13989 event pairs, 129 based on Foata normal form. 17/1951 useless extension candidates. Maximal degree in co-relation 9002. Up to 516 conditions per place. [2022-11-21 16:41:22,586 INFO L137 encePairwiseOnDemand]: 109/119 looper letters, 85 selfloop transitions, 22 changer transitions 40/228 dead transitions. [2022-11-21 16:41:22,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 228 transitions, 1993 flow [2022-11-21 16:41:22,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:41:22,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 16:41:22,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1364 transitions. [2022-11-21 16:41:22,593 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8187274909963985 [2022-11-21 16:41:22,593 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1364 transitions. [2022-11-21 16:41:22,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1364 transitions. [2022-11-21 16:41:22,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:41:22,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1364 transitions. [2022-11-21 16:41:22,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 97.42857142857143) internal successors, (1364), 14 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:22,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 119.0) internal successors, (1785), 15 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:22,607 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 119.0) internal successors, (1785), 15 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:22,607 INFO L175 Difference]: Start difference. First operand has 172 places, 142 transitions, 777 flow. Second operand 14 states and 1364 transitions. [2022-11-21 16:41:22,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 228 transitions, 1993 flow [2022-11-21 16:41:22,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 228 transitions, 1734 flow, removed 96 selfloop flow, removed 19 redundant places. [2022-11-21 16:41:22,667 INFO L231 Difference]: Finished difference. Result has 163 places, 142 transitions, 735 flow [2022-11-21 16:41:22,667 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=735, PETRI_PLACES=163, PETRI_TRANSITIONS=142} [2022-11-21 16:41:22,668 INFO L288 CegarLoopForPetriNet]: 124 programPoint places, 39 predicate places. [2022-11-21 16:41:22,668 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 142 transitions, 735 flow [2022-11-21 16:41:22,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 92.5) internal successors, (740), 8 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:22,669 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:41:22,670 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] [2022-11-21 16:41:22,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:41:22,670 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 16:41:22,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:41:22,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1262607349, now seen corresponding path program 1 times [2022-11-21 16:41:22,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:41:22,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338683856] [2022-11-21 16:41:22,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:41:22,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:41:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:41:23,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:41:23,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:41:23,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338683856] [2022-11-21 16:41:23,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338683856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:41:23,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:41:23,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:41:23,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137616062] [2022-11-21 16:41:23,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:41:23,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:41:23,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:41:23,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:41:23,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:41:23,633 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 119 [2022-11-21 16:41:23,635 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 142 transitions, 735 flow. Second operand has 10 states, 10 states have (on average 91.5) internal successors, (915), 10 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:23,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:41:23,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 119 [2022-11-21 16:41:23,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:41:24,617 INFO L130 PetriNetUnfolder]: 332/1818 cut-off events. [2022-11-21 16:41:24,617 INFO L131 PetriNetUnfolder]: For 5616/5788 co-relation queries the response was YES. [2022-11-21 16:41:24,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6203 conditions, 1818 events. 332/1818 cut-off events. For 5616/5788 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 18481 event pairs, 12 based on Foata normal form. 4/1724 useless extension candidates. Maximal degree in co-relation 6118. Up to 220 conditions per place. [2022-11-21 16:41:24,627 INFO L137 encePairwiseOnDemand]: 108/119 looper letters, 27 selfloop transitions, 1 changer transitions 67/191 dead transitions. [2022-11-21 16:41:24,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 191 transitions, 1304 flow [2022-11-21 16:41:24,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 16:41:24,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 16:41:24,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1224 transitions. [2022-11-21 16:41:24,632 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7912087912087912 [2022-11-21 16:41:24,632 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1224 transitions. [2022-11-21 16:41:24,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1224 transitions. [2022-11-21 16:41:24,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:41:24,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1224 transitions. [2022-11-21 16:41:24,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 94.15384615384616) internal successors, (1224), 13 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:24,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 119.0) internal successors, (1666), 14 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:24,641 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 119.0) internal successors, (1666), 14 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:24,641 INFO L175 Difference]: Start difference. First operand has 163 places, 142 transitions, 735 flow. Second operand 13 states and 1224 transitions. [2022-11-21 16:41:24,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 191 transitions, 1304 flow [2022-11-21 16:41:24,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 191 transitions, 1100 flow, removed 84 selfloop flow, removed 16 redundant places. [2022-11-21 16:41:24,694 INFO L231 Difference]: Finished difference. Result has 167 places, 122 transitions, 495 flow [2022-11-21 16:41:24,695 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=495, PETRI_PLACES=167, PETRI_TRANSITIONS=122} [2022-11-21 16:41:24,696 INFO L288 CegarLoopForPetriNet]: 124 programPoint places, 43 predicate places. [2022-11-21 16:41:24,696 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 122 transitions, 495 flow [2022-11-21 16:41:24,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.5) internal successors, (915), 10 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:24,697 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:41:24,697 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:41:24,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 16:41:24,697 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 16:41:24,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:41:24,698 INFO L85 PathProgramCache]: Analyzing trace with hash -389788203, now seen corresponding path program 2 times [2022-11-21 16:41:24,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:41:24,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060575685] [2022-11-21 16:41:24,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:41:24,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:41:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:41:27,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:41:27,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:41:27,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060575685] [2022-11-21 16:41:27,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060575685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:41:27,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:41:27,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 16:41:27,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009893366] [2022-11-21 16:41:27,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:41:27,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 16:41:27,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:41:27,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 16:41:27,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:41:27,237 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 119 [2022-11-21 16:41:27,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 122 transitions, 495 flow. Second operand has 11 states, 11 states have (on average 90.36363636363636) internal successors, (994), 11 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:27,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:41:27,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 119 [2022-11-21 16:41:27,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:41:27,754 INFO L130 PetriNetUnfolder]: 183/1210 cut-off events. [2022-11-21 16:41:27,755 INFO L131 PetriNetUnfolder]: For 1313/1354 co-relation queries the response was YES. [2022-11-21 16:41:27,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3129 conditions, 1210 events. 183/1210 cut-off events. For 1313/1354 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 11717 event pairs, 9 based on Foata normal form. 1/1149 useless extension candidates. Maximal degree in co-relation 3095. Up to 144 conditions per place. [2022-11-21 16:41:27,762 INFO L137 encePairwiseOnDemand]: 108/119 looper letters, 24 selfloop transitions, 5 changer transitions 19/142 dead transitions. [2022-11-21 16:41:27,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 142 transitions, 729 flow [2022-11-21 16:41:27,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 16:41:27,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 16:41:27,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1016 transitions. [2022-11-21 16:41:27,765 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7761650114591291 [2022-11-21 16:41:27,765 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1016 transitions. [2022-11-21 16:41:27,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1016 transitions. [2022-11-21 16:41:27,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:41:27,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1016 transitions. [2022-11-21 16:41:27,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 92.36363636363636) internal successors, (1016), 11 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:27,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 119.0) internal successors, (1428), 12 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:27,772 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 119.0) internal successors, (1428), 12 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:27,772 INFO L175 Difference]: Start difference. First operand has 167 places, 122 transitions, 495 flow. Second operand 11 states and 1016 transitions. [2022-11-21 16:41:27,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 142 transitions, 729 flow [2022-11-21 16:41:27,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 142 transitions, 677 flow, removed 17 selfloop flow, removed 17 redundant places. [2022-11-21 16:41:27,790 INFO L231 Difference]: Finished difference. Result has 156 places, 120 transitions, 467 flow [2022-11-21 16:41:27,791 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=467, PETRI_PLACES=156, PETRI_TRANSITIONS=120} [2022-11-21 16:41:27,791 INFO L288 CegarLoopForPetriNet]: 124 programPoint places, 32 predicate places. [2022-11-21 16:41:27,792 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 120 transitions, 467 flow [2022-11-21 16:41:27,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 90.36363636363636) internal successors, (994), 11 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:27,792 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:41:27,793 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] [2022-11-21 16:41:27,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 16:41:27,793 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 16:41:27,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:41:27,794 INFO L85 PathProgramCache]: Analyzing trace with hash 2035474511, now seen corresponding path program 3 times [2022-11-21 16:41:27,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:41:27,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524826483] [2022-11-21 16:41:27,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:41:27,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:41:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:41:31,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:41:31,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:41:31,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524826483] [2022-11-21 16:41:31,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524826483] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:41:31,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:41:31,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-21 16:41:31,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330624880] [2022-11-21 16:41:31,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:41:31,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 16:41:31,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:41:31,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 16:41:31,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:41:31,507 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 119 [2022-11-21 16:41:31,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 120 transitions, 467 flow. Second operand has 18 states, 18 states have (on average 84.72222222222223) internal successors, (1525), 18 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:31,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:41:31,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 119 [2022-11-21 16:41:31,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:41:32,193 INFO L130 PetriNetUnfolder]: 66/495 cut-off events. [2022-11-21 16:41:32,193 INFO L131 PetriNetUnfolder]: For 532/549 co-relation queries the response was YES. [2022-11-21 16:41:32,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1267 conditions, 495 events. 66/495 cut-off events. For 532/549 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3345 event pairs, 13 based on Foata normal form. 1/471 useless extension candidates. Maximal degree in co-relation 1244. Up to 48 conditions per place. [2022-11-21 16:41:32,196 INFO L137 encePairwiseOnDemand]: 106/119 looper letters, 0 selfloop transitions, 0 changer transitions 123/123 dead transitions. [2022-11-21 16:41:32,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 123 transitions, 573 flow [2022-11-21 16:41:32,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:41:32,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 16:41:32,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1198 transitions. [2022-11-21 16:41:32,198 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7190876350540216 [2022-11-21 16:41:32,198 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1198 transitions. [2022-11-21 16:41:32,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1198 transitions. [2022-11-21 16:41:32,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:41:32,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1198 transitions. [2022-11-21 16:41:32,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 85.57142857142857) internal successors, (1198), 14 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:32,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 119.0) internal successors, (1785), 15 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:32,207 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 119.0) internal successors, (1785), 15 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:32,207 INFO L175 Difference]: Start difference. First operand has 156 places, 120 transitions, 467 flow. Second operand 14 states and 1198 transitions. [2022-11-21 16:41:32,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 123 transitions, 573 flow [2022-11-21 16:41:32,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 123 transitions, 547 flow, removed 7 selfloop flow, removed 10 redundant places. [2022-11-21 16:41:32,214 INFO L231 Difference]: Finished difference. Result has 151 places, 0 transitions, 0 flow [2022-11-21 16:41:32,214 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=151, PETRI_TRANSITIONS=0} [2022-11-21 16:41:32,215 INFO L288 CegarLoopForPetriNet]: 124 programPoint places, 27 predicate places. [2022-11-21 16:41:32,215 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 0 transitions, 0 flow [2022-11-21 16:41:32,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 84.72222222222223) internal successors, (1525), 18 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:32,220 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-11-21 16:41:32,221 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-11-21 16:41:32,221 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-11-21 16:41:32,221 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2022-11-21 16:41:32,222 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2022-11-21 16:41:32,222 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-11-21 16:41:32,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 16:41:32,222 INFO L444 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1] [2022-11-21 16:41:32,229 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-21 16:41:32,229 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 16:41:32,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 04:41:32 BasicIcfg [2022-11-21 16:41:32,235 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 16:41:32,235 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 16:41:32,235 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 16:41:32,236 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 16:41:32,236 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:40:53" (3/4) ... [2022-11-21 16:41:32,240 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-21 16:41:32,246 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-21 16:41:32,247 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-21 16:41:32,247 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-21 16:41:32,255 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2022-11-21 16:41:32,256 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-21 16:41:32,256 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-21 16:41:32,257 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-21 16:41:32,317 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e046ca-4e2e-43b3-9d61-6f7bd8b6b15e/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 16:41:32,317 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 16:41:32,318 INFO L158 Benchmark]: Toolchain (without parser) took 41573.68ms. Allocated memory was 136.3MB in the beginning and 2.1GB in the end (delta: 2.0GB). Free memory was 95.5MB in the beginning and 685.0MB in the end (delta: -589.5MB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2022-11-21 16:41:32,318 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 109.1MB. Free memory is still 80.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:41:32,318 INFO L158 Benchmark]: CACSL2BoogieTranslator took 879.83ms. Allocated memory is still 136.3MB. Free memory was 95.0MB in the beginning and 90.7MB in the end (delta: 4.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 16:41:32,319 INFO L158 Benchmark]: Boogie Procedure Inliner took 102.70ms. Allocated memory is still 136.3MB. Free memory was 90.7MB in the beginning and 87.2MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:41:32,319 INFO L158 Benchmark]: Boogie Preprocessor took 92.64ms. Allocated memory is still 136.3MB. Free memory was 87.2MB in the beginning and 85.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:41:32,319 INFO L158 Benchmark]: RCFGBuilder took 1356.34ms. Allocated memory is still 136.3MB. Free memory was 84.4MB in the beginning and 95.2MB in the end (delta: -10.8MB). Peak memory consumption was 55.4MB. Max. memory is 16.1GB. [2022-11-21 16:41:32,320 INFO L158 Benchmark]: TraceAbstraction took 39052.49ms. Allocated memory was 136.3MB in the beginning and 2.1GB in the end (delta: 2.0GB). Free memory was 94.6MB in the beginning and 688.2MB in the end (delta: -593.6MB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2022-11-21 16:41:32,320 INFO L158 Benchmark]: Witness Printer took 81.65ms. Allocated memory is still 2.1GB. Free memory was 688.2MB in the beginning and 685.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:41:32,322 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 109.1MB. Free memory is still 80.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 879.83ms. Allocated memory is still 136.3MB. Free memory was 95.0MB in the beginning and 90.7MB in the end (delta: 4.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 102.70ms. Allocated memory is still 136.3MB. Free memory was 90.7MB in the beginning and 87.2MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 92.64ms. Allocated memory is still 136.3MB. Free memory was 87.2MB in the beginning and 85.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1356.34ms. Allocated memory is still 136.3MB. Free memory was 84.4MB in the beginning and 95.2MB in the end (delta: -10.8MB). Peak memory consumption was 55.4MB. Max. memory is 16.1GB. * TraceAbstraction took 39052.49ms. Allocated memory was 136.3MB in the beginning and 2.1GB in the end (delta: 2.0GB). Free memory was 94.6MB in the beginning and 688.2MB in the end (delta: -593.6MB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. * Witness Printer took 81.65ms. Allocated memory is still 2.1GB. Free memory was 688.2MB in the beginning and 685.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 149 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 38.9s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 20.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 970 SdHoareTripleChecker+Valid, 5.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 970 mSDsluCounter, 707 SdHoareTripleChecker+Invalid, 4.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 587 mSDsCounter, 201 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2907 IncrementalHoareTripleChecker+Invalid, 3108 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 201 mSolverCounterUnsat, 120 mSDtfsCounter, 2907 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 190 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=777occurred in iteration=8, InterpolantAutomatonStates: 139, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 16.8s InterpolantComputationTime, 989 NumberOfCodeBlocks, 989 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 977 ConstructedInterpolants, 0 QuantifiedInterpolants, 4771 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-21 16:41:32,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e046ca-4e2e-43b3-9d61-6f7bd8b6b15e/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE