./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8 --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 0307f20ae0363cc6fed70ae0937c5000167639ab486b68a523e3313ccdd28e28 --- 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-2329fc7 [2022-12-13 18:19:15,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:19:15,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:19:15,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:19:15,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:19:15,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:19:15,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:19:15,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:19:15,715 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:19:15,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:19:15,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:19:15,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:19:15,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:19:15,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:19:15,719 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:19:15,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:19:15,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:19:15,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:19:15,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:19:15,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:19:15,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:19:15,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:19:15,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:19:15,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:19:15,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:19:15,729 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:19:15,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:19:15,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:19:15,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:19:15,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:19:15,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:19:15,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:19:15,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:19:15,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:19:15,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:19:15,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:19:15,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:19:15,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:19:15,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:19:15,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:19:15,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:19:15,736 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 18:19:15,750 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:19:15,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:19:15,751 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:19:15,751 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:19:15,752 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:19:15,752 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:19:15,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:19:15,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:19:15,753 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:19:15,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:19:15,753 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:19:15,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:19:15,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:19:15,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:19:15,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:19:15,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:19:15,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:19:15,754 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:19:15,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:19:15,754 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:19:15,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:19:15,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:19:15,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:19:15,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:19:15,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:19:15,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:19:15,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:19:15,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:19:15,756 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:19:15,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:19:15,756 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:19:15,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:19:15,757 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:19:15,757 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:19:15,757 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:19:15,757 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0307f20ae0363cc6fed70ae0937c5000167639ab486b68a523e3313ccdd28e28 [2022-12-13 18:19:15,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:19:15,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:19:15,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:19:15,954 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:19:15,955 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:19:15,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2022-12-13 18:19:18,490 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:19:18,632 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:19:18,633 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2022-12-13 18:19:18,638 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/data/a5f22e184/7381fd6cc4994869a723498f1f436cc6/FLAG60078745f [2022-12-13 18:19:18,648 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/data/a5f22e184/7381fd6cc4994869a723498f1f436cc6 [2022-12-13 18:19:18,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:19:18,651 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:19:18,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:19:18,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:19:18,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:19:18,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:19:18" (1/1) ... [2022-12-13 18:19:18,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@467a8ea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:19:18, skipping insertion in model container [2022-12-13 18:19:18,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:19:18" (1/1) ... [2022-12-13 18:19:18,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:19:18,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:19:18,816 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_8c306c14-087e-4817-8426-4410b332710a/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c[2396,2409] [2022-12-13 18:19:18,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:19:18,832 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:19:18,850 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_8c306c14-087e-4817-8426-4410b332710a/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c[2396,2409] [2022-12-13 18:19:18,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:19:18,867 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:19:18,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:19:18 WrapperNode [2022-12-13 18:19:18,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:19:18,869 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:19:18,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:19:18,869 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:19:18,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:19:18" (1/1) ... [2022-12-13 18:19:18,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:19:18" (1/1) ... [2022-12-13 18:19:18,902 INFO L138 Inliner]: procedures = 25, calls = 34, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 102 [2022-12-13 18:19:18,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:19:18,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:19:18,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:19:18,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:19:18,910 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:19:18" (1/1) ... [2022-12-13 18:19:18,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:19:18" (1/1) ... [2022-12-13 18:19:18,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:19:18" (1/1) ... [2022-12-13 18:19:18,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:19:18" (1/1) ... [2022-12-13 18:19:18,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:19:18" (1/1) ... [2022-12-13 18:19:18,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:19:18" (1/1) ... [2022-12-13 18:19:18,925 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:19:18" (1/1) ... [2022-12-13 18:19:18,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:19:18" (1/1) ... [2022-12-13 18:19:18,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:19:18,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:19:18,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:19:18,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:19:18,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:19:18" (1/1) ... [2022-12-13 18:19:18,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:19:18,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:19:18,957 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:19:18,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:19:18,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:19:18,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 18:19:18,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 18:19:18,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 18:19:18,993 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 18:19:18,993 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 18:19:18,993 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 18:19:18,993 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 18:19:18,994 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 18:19:18,994 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 18:19:18,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:19:18,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 18:19:18,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:19:18,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:19:18,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 18:19:18,996 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 18:19:19,086 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:19:19,088 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:19:19,283 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:19:19,290 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:19:19,290 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 18:19:19,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:19:19 BoogieIcfgContainer [2022-12-13 18:19:19,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:19:19,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:19:19,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:19:19,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:19:19,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:19:18" (1/3) ... [2022-12-13 18:19:19,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b6136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:19:19, skipping insertion in model container [2022-12-13 18:19:19,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:19:18" (2/3) ... [2022-12-13 18:19:19,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b6136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:19:19, skipping insertion in model container [2022-12-13 18:19:19,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:19:19" (3/3) ... [2022-12-13 18:19:19,300 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sum-array-hom.wvr.c [2022-12-13 18:19:19,309 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 18:19:19,317 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:19:19,317 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 18:19:19,317 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 18:19:19,382 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 18:19:19,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 160 transitions, 344 flow [2022-12-13 18:19:19,489 INFO L130 PetriNetUnfolder]: 12/157 cut-off events. [2022-12-13 18:19:19,490 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 18:19:19,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 157 events. 12/157 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 101 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 117. Up to 2 conditions per place. [2022-12-13 18:19:19,494 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 160 transitions, 344 flow [2022-12-13 18:19:19,497 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 146 transitions, 310 flow [2022-12-13 18:19:19,501 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:19:19,508 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 146 transitions, 310 flow [2022-12-13 18:19:19,511 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 146 transitions, 310 flow [2022-12-13 18:19:19,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 146 transitions, 310 flow [2022-12-13 18:19:19,538 INFO L130 PetriNetUnfolder]: 12/146 cut-off events. [2022-12-13 18:19:19,538 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 18:19:19,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 146 events. 12/146 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 101 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 117. Up to 2 conditions per place. [2022-12-13 18:19:19,540 INFO L119 LiptonReduction]: Number of co-enabled transitions 1728 [2022-12-13 18:19:23,228 INFO L134 LiptonReduction]: Checked pairs total: 1887 [2022-12-13 18:19:23,228 INFO L136 LiptonReduction]: Total number of compositions: 139 [2022-12-13 18:19:23,241 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:19:23,246 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;@2e4348c7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:19:23,246 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-13 18:19:23,252 INFO L130 PetriNetUnfolder]: 4/23 cut-off events. [2022-12-13 18:19:23,252 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 18:19:23,252 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:19:23,253 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] [2022-12-13 18:19:23,254 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 18:19:23,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:19:23,258 INFO L85 PathProgramCache]: Analyzing trace with hash -687373069, now seen corresponding path program 1 times [2022-12-13 18:19:23,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:19:23,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653623250] [2022-12-13 18:19:23,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:19:23,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:19:23,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:24,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:19:24,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:19:24,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653623250] [2022-12-13 18:19:24,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653623250] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:19:24,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:19:24,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:19:24,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279073300] [2022-12-13 18:19:24,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:19:24,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:19:24,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:19:24,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:19:24,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:19:24,166 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 299 [2022-12-13 18:19:24,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:24,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:19:24,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 299 [2022-12-13 18:19:24,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:19:24,309 INFO L130 PetriNetUnfolder]: 441/639 cut-off events. [2022-12-13 18:19:24,309 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-12-13 18:19:24,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1344 conditions, 639 events. 441/639 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2234 event pairs, 76 based on Foata normal form. 2/398 useless extension candidates. Maximal degree in co-relation 803. Up to 465 conditions per place. [2022-12-13 18:19:24,313 INFO L137 encePairwiseOnDemand]: 293/299 looper letters, 46 selfloop transitions, 8 changer transitions 2/59 dead transitions. [2022-12-13 18:19:24,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 59 transitions, 281 flow [2022-12-13 18:19:24,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:19:24,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 18:19:24,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 614 transitions. [2022-12-13 18:19:24,325 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5133779264214047 [2022-12-13 18:19:24,325 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 614 transitions. [2022-12-13 18:19:24,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 614 transitions. [2022-12-13 18:19:24,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:19:24,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 614 transitions. [2022-12-13 18:19:24,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:24,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 299.0) internal successors, (1495), 5 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:24,337 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 299.0) internal successors, (1495), 5 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:24,339 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 66 flow. Second operand 4 states and 614 transitions. [2022-12-13 18:19:24,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 59 transitions, 281 flow [2022-12-13 18:19:24,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 59 transitions, 247 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 18:19:24,344 INFO L231 Difference]: Finished difference. Result has 29 places, 31 transitions, 105 flow [2022-12-13 18:19:24,345 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=105, PETRI_PLACES=29, PETRI_TRANSITIONS=31} [2022-12-13 18:19:24,348 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2022-12-13 18:19:24,349 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 31 transitions, 105 flow [2022-12-13 18:19:24,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:24,349 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:19:24,349 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] [2022-12-13 18:19:24,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:19:24,349 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 18:19:24,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:19:24,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1396899916, now seen corresponding path program 1 times [2022-12-13 18:19:24,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:19:24,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61708839] [2022-12-13 18:19:24,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:19:24,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:19:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:24,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:19:24,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:19:24,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61708839] [2022-12-13 18:19:24,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61708839] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:19:24,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:19:24,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:19:24,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708100910] [2022-12-13 18:19:24,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:19:24,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:19:24,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:19:24,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:19:24,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:19:24,510 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 299 [2022-12-13 18:19:24,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 31 transitions, 105 flow. Second operand has 5 states, 5 states have (on average 139.8) internal successors, (699), 5 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:24,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:19:24,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 299 [2022-12-13 18:19:24,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:19:24,668 INFO L130 PetriNetUnfolder]: 621/928 cut-off events. [2022-12-13 18:19:24,668 INFO L131 PetriNetUnfolder]: For 263/263 co-relation queries the response was YES. [2022-12-13 18:19:24,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2275 conditions, 928 events. 621/928 cut-off events. For 263/263 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3767 event pairs, 273 based on Foata normal form. 34/962 useless extension candidates. Maximal degree in co-relation 1220. Up to 484 conditions per place. [2022-12-13 18:19:24,672 INFO L137 encePairwiseOnDemand]: 294/299 looper letters, 54 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2022-12-13 18:19:24,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 60 transitions, 302 flow [2022-12-13 18:19:24,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:19:24,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 18:19:24,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 732 transitions. [2022-12-13 18:19:24,675 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48963210702341137 [2022-12-13 18:19:24,675 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 732 transitions. [2022-12-13 18:19:24,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 732 transitions. [2022-12-13 18:19:24,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:19:24,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 732 transitions. [2022-12-13 18:19:24,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.4) internal successors, (732), 5 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:24,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:24,679 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:24,679 INFO L175 Difference]: Start difference. First operand has 29 places, 31 transitions, 105 flow. Second operand 5 states and 732 transitions. [2022-12-13 18:19:24,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 60 transitions, 302 flow [2022-12-13 18:19:24,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 60 transitions, 302 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:19:24,681 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 124 flow [2022-12-13 18:19:24,681 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2022-12-13 18:19:24,681 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2022-12-13 18:19:24,681 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 124 flow [2022-12-13 18:19:24,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 139.8) internal successors, (699), 5 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:24,682 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:19:24,682 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] [2022-12-13 18:19:24,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:19:24,682 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 18:19:24,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:19:24,682 INFO L85 PathProgramCache]: Analyzing trace with hash -209877995, now seen corresponding path program 1 times [2022-12-13 18:19:24,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:19:24,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416629331] [2022-12-13 18:19:24,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:19:24,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:19:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:24,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:19:24,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:19:24,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416629331] [2022-12-13 18:19:24,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416629331] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:19:24,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:19:24,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:19:24,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017182937] [2022-12-13 18:19:24,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:19:24,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:19:24,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:19:24,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:19:24,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:19:24,960 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 299 [2022-12-13 18:19:24,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 124 flow. Second operand has 5 states, 5 states have (on average 138.8) internal successors, (694), 5 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:24,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:19:24,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 299 [2022-12-13 18:19:24,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:19:25,103 INFO L130 PetriNetUnfolder]: 481/749 cut-off events. [2022-12-13 18:19:25,103 INFO L131 PetriNetUnfolder]: For 274/286 co-relation queries the response was YES. [2022-12-13 18:19:25,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1857 conditions, 749 events. 481/749 cut-off events. For 274/286 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3139 event pairs, 223 based on Foata normal form. 40/786 useless extension candidates. Maximal degree in co-relation 1274. Up to 486 conditions per place. [2022-12-13 18:19:25,106 INFO L137 encePairwiseOnDemand]: 294/299 looper letters, 50 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2022-12-13 18:19:25,106 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 57 transitions, 298 flow [2022-12-13 18:19:25,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:19:25,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 18:19:25,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 725 transitions. [2022-12-13 18:19:25,108 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48494983277591974 [2022-12-13 18:19:25,108 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 725 transitions. [2022-12-13 18:19:25,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 725 transitions. [2022-12-13 18:19:25,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:19:25,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 725 transitions. [2022-12-13 18:19:25,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:25,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:25,112 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:25,112 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 124 flow. Second operand 5 states and 725 transitions. [2022-12-13 18:19:25,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 57 transitions, 298 flow [2022-12-13 18:19:25,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 57 transitions, 294 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 18:19:25,114 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 132 flow [2022-12-13 18:19:25,114 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2022-12-13 18:19:25,114 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 11 predicate places. [2022-12-13 18:19:25,115 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 132 flow [2022-12-13 18:19:25,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.8) internal successors, (694), 5 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:25,115 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:19:25,115 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] [2022-12-13 18:19:25,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:19:25,115 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 18:19:25,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:19:25,116 INFO L85 PathProgramCache]: Analyzing trace with hash 811659175, now seen corresponding path program 1 times [2022-12-13 18:19:25,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:19:25,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177273912] [2022-12-13 18:19:25,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:19:25,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:19:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:25,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:19:25,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:19:25,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177273912] [2022-12-13 18:19:25,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177273912] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:19:25,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:19:25,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:19:25,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727911149] [2022-12-13 18:19:25,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:19:25,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:19:25,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:19:25,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:19:25,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:19:25,460 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 299 [2022-12-13 18:19:25,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 137.8) internal successors, (689), 5 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:25,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:19:25,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 299 [2022-12-13 18:19:25,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:19:25,666 INFO L130 PetriNetUnfolder]: 419/637 cut-off events. [2022-12-13 18:19:25,667 INFO L131 PetriNetUnfolder]: For 355/355 co-relation queries the response was YES. [2022-12-13 18:19:25,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1659 conditions, 637 events. 419/637 cut-off events. For 355/355 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2529 event pairs, 140 based on Foata normal form. 14/646 useless extension candidates. Maximal degree in co-relation 1393. Up to 371 conditions per place. [2022-12-13 18:19:25,671 INFO L137 encePairwiseOnDemand]: 293/299 looper letters, 34 selfloop transitions, 3 changer transitions 25/64 dead transitions. [2022-12-13 18:19:25,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 64 transitions, 337 flow [2022-12-13 18:19:25,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:19:25,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 18:19:25,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 860 transitions. [2022-12-13 18:19:25,674 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4793756967670011 [2022-12-13 18:19:25,674 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 860 transitions. [2022-12-13 18:19:25,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 860 transitions. [2022-12-13 18:19:25,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:19:25,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 860 transitions. [2022-12-13 18:19:25,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 143.33333333333334) internal successors, (860), 6 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:25,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 299.0) internal successors, (2093), 7 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:25,681 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 299.0) internal successors, (2093), 7 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:25,681 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 132 flow. Second operand 6 states and 860 transitions. [2022-12-13 18:19:25,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 64 transitions, 337 flow [2022-12-13 18:19:25,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 64 transitions, 320 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-12-13 18:19:25,684 INFO L231 Difference]: Finished difference. Result has 42 places, 28 transitions, 104 flow [2022-12-13 18:19:25,684 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=104, PETRI_PLACES=42, PETRI_TRANSITIONS=28} [2022-12-13 18:19:25,685 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2022-12-13 18:19:25,685 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 28 transitions, 104 flow [2022-12-13 18:19:25,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.8) internal successors, (689), 5 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:25,686 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:19:25,686 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] [2022-12-13 18:19:25,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:19:25,686 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 18:19:25,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:19:25,687 INFO L85 PathProgramCache]: Analyzing trace with hash 2006793184, now seen corresponding path program 1 times [2022-12-13 18:19:25,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:19:25,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580769605] [2022-12-13 18:19:25,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:19:25,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:19:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:25,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:19:25,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:19:25,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580769605] [2022-12-13 18:19:25,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580769605] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:19:25,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965558089] [2022-12-13 18:19:25,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:19:25,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:19:25,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:19:25,801 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:19:25,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 18:19:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:25,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 18:19:25,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:19:25,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:19:25,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:19:26,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:19:26,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965558089] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:19:26,042 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:19:26,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2022-12-13 18:19:26,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726800134] [2022-12-13 18:19:26,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:19:26,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 18:19:26,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:19:26,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 18:19:26,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-12-13 18:19:26,297 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 299 [2022-12-13 18:19:26,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 28 transitions, 104 flow. Second operand has 14 states, 14 states have (on average 129.85714285714286) internal successors, (1818), 14 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:26,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:19:26,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 299 [2022-12-13 18:19:26,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:19:26,527 INFO L130 PetriNetUnfolder]: 544/799 cut-off events. [2022-12-13 18:19:26,527 INFO L131 PetriNetUnfolder]: For 328/328 co-relation queries the response was YES. [2022-12-13 18:19:26,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2148 conditions, 799 events. 544/799 cut-off events. For 328/328 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3090 event pairs, 139 based on Foata normal form. 16/813 useless extension candidates. Maximal degree in co-relation 2123. Up to 410 conditions per place. [2022-12-13 18:19:26,530 INFO L137 encePairwiseOnDemand]: 291/299 looper letters, 58 selfloop transitions, 9 changer transitions 0/68 dead transitions. [2022-12-13 18:19:26,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 68 transitions, 370 flow [2022-12-13 18:19:26,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:19:26,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 18:19:26,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 948 transitions. [2022-12-13 18:19:26,532 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4529383659818442 [2022-12-13 18:19:26,533 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 948 transitions. [2022-12-13 18:19:26,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 948 transitions. [2022-12-13 18:19:26,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:19:26,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 948 transitions. [2022-12-13 18:19:26,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.42857142857142) internal successors, (948), 7 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:26,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:26,536 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:26,536 INFO L175 Difference]: Start difference. First operand has 42 places, 28 transitions, 104 flow. Second operand 7 states and 948 transitions. [2022-12-13 18:19:26,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 68 transitions, 370 flow [2022-12-13 18:19:26,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 68 transitions, 349 flow, removed 7 selfloop flow, removed 5 redundant places. [2022-12-13 18:19:26,539 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 149 flow [2022-12-13 18:19:26,539 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=149, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2022-12-13 18:19:26,539 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2022-12-13 18:19:26,540 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 149 flow [2022-12-13 18:19:26,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 129.85714285714286) internal successors, (1818), 14 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:26,540 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:19:26,540 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] [2022-12-13 18:19:26,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 18:19:26,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:19:26,742 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 18:19:26,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:19:26,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1664062566, now seen corresponding path program 2 times [2022-12-13 18:19:26,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:19:26,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456973041] [2022-12-13 18:19:26,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:19:26,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:19:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:26,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:19:26,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:19:26,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456973041] [2022-12-13 18:19:26,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456973041] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:19:26,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256106041] [2022-12-13 18:19:26,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:19:26,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:19:26,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:19:26,939 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:19:26,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 18:19:27,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:19:27,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:19:27,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 18:19:27,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:19:27,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:19:27,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:19:27,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:19:27,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256106041] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 18:19:27,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:19:27,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2022-12-13 18:19:27,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242777462] [2022-12-13 18:19:27,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:19:27,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:19:27,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:19:27,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:19:27,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-12-13 18:19:27,186 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 299 [2022-12-13 18:19:27,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 149 flow. Second operand has 7 states, 7 states have (on average 130.0) internal successors, (910), 7 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:27,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:19:27,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 299 [2022-12-13 18:19:27,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:19:27,372 INFO L130 PetriNetUnfolder]: 736/1083 cut-off events. [2022-12-13 18:19:27,372 INFO L131 PetriNetUnfolder]: For 1078/1078 co-relation queries the response was YES. [2022-12-13 18:19:27,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3491 conditions, 1083 events. 736/1083 cut-off events. For 1078/1078 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4391 event pairs, 221 based on Foata normal form. 12/1093 useless extension candidates. Maximal degree in co-relation 3469. Up to 648 conditions per place. [2022-12-13 18:19:27,377 INFO L137 encePairwiseOnDemand]: 291/299 looper letters, 60 selfloop transitions, 12 changer transitions 0/73 dead transitions. [2022-12-13 18:19:27,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 73 transitions, 462 flow [2022-12-13 18:19:27,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:19:27,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 18:19:27,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 944 transitions. [2022-12-13 18:19:27,379 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4510272336359293 [2022-12-13 18:19:27,379 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 944 transitions. [2022-12-13 18:19:27,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 944 transitions. [2022-12-13 18:19:27,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:19:27,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 944 transitions. [2022-12-13 18:19:27,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 134.85714285714286) internal successors, (944), 7 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:27,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:27,384 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:27,384 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 149 flow. Second operand 7 states and 944 transitions. [2022-12-13 18:19:27,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 73 transitions, 462 flow [2022-12-13 18:19:27,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 73 transitions, 427 flow, removed 10 selfloop flow, removed 3 redundant places. [2022-12-13 18:19:27,387 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 208 flow [2022-12-13 18:19:27,387 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=208, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2022-12-13 18:19:27,387 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2022-12-13 18:19:27,387 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 208 flow [2022-12-13 18:19:27,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 130.0) internal successors, (910), 7 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:27,388 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:19:27,388 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] [2022-12-13 18:19:27,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 18:19:27,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 18:19:27,589 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 18:19:27,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:19:27,590 INFO L85 PathProgramCache]: Analyzing trace with hash -420541182, now seen corresponding path program 3 times [2022-12-13 18:19:27,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:19:27,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599762790] [2022-12-13 18:19:27,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:19:27,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:19:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:27,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:19:27,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:19:27,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599762790] [2022-12-13 18:19:27,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599762790] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:19:27,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042485203] [2022-12-13 18:19:27,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 18:19:27,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:19:27,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:19:27,701 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:19:27,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 18:19:27,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 18:19:27,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:19:27,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 18:19:27,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:19:27,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:19:27,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:19:27,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:19:27,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042485203] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 18:19:27,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:19:27,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 14 [2022-12-13 18:19:27,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586747119] [2022-12-13 18:19:27,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:19:27,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:19:27,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:19:27,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:19:27,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-12-13 18:19:27,978 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 299 [2022-12-13 18:19:27,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 208 flow. Second operand has 7 states, 7 states have (on average 130.0) internal successors, (910), 7 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:27,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:19:27,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 299 [2022-12-13 18:19:27,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:19:28,162 INFO L130 PetriNetUnfolder]: 840/1246 cut-off events. [2022-12-13 18:19:28,162 INFO L131 PetriNetUnfolder]: For 2142/2142 co-relation queries the response was YES. [2022-12-13 18:19:28,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4617 conditions, 1246 events. 840/1246 cut-off events. For 2142/2142 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5341 event pairs, 211 based on Foata normal form. 16/1260 useless extension candidates. Maximal degree in co-relation 4592. Up to 612 conditions per place. [2022-12-13 18:19:28,171 INFO L137 encePairwiseOnDemand]: 291/299 looper letters, 62 selfloop transitions, 19 changer transitions 0/82 dead transitions. [2022-12-13 18:19:28,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 82 transitions, 576 flow [2022-12-13 18:19:28,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:19:28,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 18:19:28,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 951 transitions. [2022-12-13 18:19:28,174 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45437171524128045 [2022-12-13 18:19:28,175 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 951 transitions. [2022-12-13 18:19:28,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 951 transitions. [2022-12-13 18:19:28,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:19:28,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 951 transitions. [2022-12-13 18:19:28,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.85714285714286) internal successors, (951), 7 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:28,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:28,181 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:28,181 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 208 flow. Second operand 7 states and 951 transitions. [2022-12-13 18:19:28,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 82 transitions, 576 flow [2022-12-13 18:19:28,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 82 transitions, 535 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-12-13 18:19:28,186 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 321 flow [2022-12-13 18:19:28,186 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=321, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2022-12-13 18:19:28,187 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2022-12-13 18:19:28,187 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 321 flow [2022-12-13 18:19:28,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 130.0) internal successors, (910), 7 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:28,188 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:19:28,188 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] [2022-12-13 18:19:28,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 18:19:28,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:19:28,388 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 18:19:28,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:19:28,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1582446678, now seen corresponding path program 4 times [2022-12-13 18:19:28,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:19:28,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332564470] [2022-12-13 18:19:28,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:19:28,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:19:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:28,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:19:28,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:19:28,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332564470] [2022-12-13 18:19:28,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332564470] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:19:28,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382431293] [2022-12-13 18:19:28,492 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 18:19:28,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:19:28,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:19:28,493 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:19:28,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 18:19:28,550 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 18:19:28,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:19:28,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 18:19:28,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:19:28,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:19:28,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:19:28,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:19:28,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382431293] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:19:28,663 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:19:28,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-12-13 18:19:28,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40304765] [2022-12-13 18:19:28,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:19:28,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 18:19:28,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:19:28,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 18:19:28,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-12-13 18:19:28,899 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 299 [2022-12-13 18:19:28,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 321 flow. Second operand has 14 states, 14 states have (on average 126.78571428571429) internal successors, (1775), 14 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:28,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:19:28,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 299 [2022-12-13 18:19:28,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:19:29,262 INFO L130 PetriNetUnfolder]: 869/1312 cut-off events. [2022-12-13 18:19:29,262 INFO L131 PetriNetUnfolder]: For 3825/3825 co-relation queries the response was YES. [2022-12-13 18:19:29,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5351 conditions, 1312 events. 869/1312 cut-off events. For 3825/3825 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5385 event pairs, 30 based on Foata normal form. 18/1330 useless extension candidates. Maximal degree in co-relation 5323. Up to 590 conditions per place. [2022-12-13 18:19:29,268 INFO L137 encePairwiseOnDemand]: 290/299 looper letters, 80 selfloop transitions, 43 changer transitions 0/123 dead transitions. [2022-12-13 18:19:29,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 123 transitions, 1043 flow [2022-12-13 18:19:29,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 18:19:29,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 18:19:29,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1451 transitions. [2022-12-13 18:19:29,271 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44116752812404986 [2022-12-13 18:19:29,271 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1451 transitions. [2022-12-13 18:19:29,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1451 transitions. [2022-12-13 18:19:29,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:19:29,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1451 transitions. [2022-12-13 18:19:29,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 131.9090909090909) internal successors, (1451), 11 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:29,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:29,277 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:29,278 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 321 flow. Second operand 11 states and 1451 transitions. [2022-12-13 18:19:29,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 123 transitions, 1043 flow [2022-12-13 18:19:29,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 123 transitions, 1004 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-12-13 18:19:29,284 INFO L231 Difference]: Finished difference. Result has 65 places, 72 transitions, 695 flow [2022-12-13 18:19:29,284 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=695, PETRI_PLACES=65, PETRI_TRANSITIONS=72} [2022-12-13 18:19:29,284 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2022-12-13 18:19:29,285 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 72 transitions, 695 flow [2022-12-13 18:19:29,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 126.78571428571429) internal successors, (1775), 14 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:29,285 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:19:29,286 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] [2022-12-13 18:19:29,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 18:19:29,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 18:19:29,487 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 18:19:29,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:19:29,487 INFO L85 PathProgramCache]: Analyzing trace with hash -694690528, now seen corresponding path program 5 times [2022-12-13 18:19:29,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:19:29,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463216528] [2022-12-13 18:19:29,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:19:29,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:19:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:29,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:19:29,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:19:29,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463216528] [2022-12-13 18:19:29,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463216528] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:19:29,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544782210] [2022-12-13 18:19:29,644 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 18:19:29,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:19:29,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:19:29,646 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:19:29,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 18:19:29,717 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:19:29,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:19:29,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 18:19:29,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:19:29,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:19:29,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:19:29,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:19:29,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544782210] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:19:29,835 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:19:29,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-12-13 18:19:29,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523937924] [2022-12-13 18:19:29,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:19:29,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 18:19:29,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:19:29,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 18:19:29,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-12-13 18:19:30,102 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 299 [2022-12-13 18:19:30,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 72 transitions, 695 flow. Second operand has 17 states, 17 states have (on average 126.82352941176471) internal successors, (2156), 17 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:30,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:19:30,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 299 [2022-12-13 18:19:30,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:19:30,576 INFO L130 PetriNetUnfolder]: 1230/1853 cut-off events. [2022-12-13 18:19:30,576 INFO L131 PetriNetUnfolder]: For 8960/8960 co-relation queries the response was YES. [2022-12-13 18:19:30,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8862 conditions, 1853 events. 1230/1853 cut-off events. For 8960/8960 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 8131 event pairs, 194 based on Foata normal form. 26/1879 useless extension candidates. Maximal degree in co-relation 8828. Up to 713 conditions per place. [2022-12-13 18:19:30,597 INFO L137 encePairwiseOnDemand]: 289/299 looper letters, 102 selfloop transitions, 60 changer transitions 0/162 dead transitions. [2022-12-13 18:19:30,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 162 transitions, 1586 flow [2022-12-13 18:19:30,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 18:19:30,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 18:19:30,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1336 transitions. [2022-12-13 18:19:30,602 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4468227424749164 [2022-12-13 18:19:30,602 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1336 transitions. [2022-12-13 18:19:30,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1336 transitions. [2022-12-13 18:19:30,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:19:30,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1336 transitions. [2022-12-13 18:19:30,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 133.6) internal successors, (1336), 10 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:30,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 299.0) internal successors, (3289), 11 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:30,608 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 299.0) internal successors, (3289), 11 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:30,608 INFO L175 Difference]: Start difference. First operand has 65 places, 72 transitions, 695 flow. Second operand 10 states and 1336 transitions. [2022-12-13 18:19:30,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 162 transitions, 1586 flow [2022-12-13 18:19:30,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 162 transitions, 1537 flow, removed 23 selfloop flow, removed 2 redundant places. [2022-12-13 18:19:30,625 INFO L231 Difference]: Finished difference. Result has 77 places, 100 transitions, 1150 flow [2022-12-13 18:19:30,625 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1150, PETRI_PLACES=77, PETRI_TRANSITIONS=100} [2022-12-13 18:19:30,625 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 47 predicate places. [2022-12-13 18:19:30,625 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 100 transitions, 1150 flow [2022-12-13 18:19:30,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 126.82352941176471) internal successors, (2156), 17 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:30,626 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:19:30,626 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] [2022-12-13 18:19:30,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-13 18:19:30,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:19:30,827 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 18:19:30,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:19:30,827 INFO L85 PathProgramCache]: Analyzing trace with hash -198774262, now seen corresponding path program 6 times [2022-12-13 18:19:30,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:19:30,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676520498] [2022-12-13 18:19:30,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:19:30,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:19:30,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:30,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:19:30,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:19:30,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676520498] [2022-12-13 18:19:30,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676520498] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:19:30,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636025982] [2022-12-13 18:19:30,918 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 18:19:30,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:19:30,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:19:30,919 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:19:30,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 18:19:30,997 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-13 18:19:30,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:19:30,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 18:19:31,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:19:31,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:19:31,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:19:31,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:19:31,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636025982] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 18:19:31,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:19:31,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2022-12-13 18:19:31,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478442723] [2022-12-13 18:19:31,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:19:31,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:19:31,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:19:31,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:19:31,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-12-13 18:19:31,212 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 299 [2022-12-13 18:19:31,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 100 transitions, 1150 flow. Second operand has 7 states, 7 states have (on average 130.0) internal successors, (910), 7 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:31,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:19:31,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 299 [2022-12-13 18:19:31,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:19:31,484 INFO L130 PetriNetUnfolder]: 1161/1730 cut-off events. [2022-12-13 18:19:31,484 INFO L131 PetriNetUnfolder]: For 12718/12760 co-relation queries the response was YES. [2022-12-13 18:19:31,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9594 conditions, 1730 events. 1161/1730 cut-off events. For 12718/12760 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 7532 event pairs, 246 based on Foata normal form. 52/1771 useless extension candidates. Maximal degree in co-relation 9554. Up to 918 conditions per place. [2022-12-13 18:19:31,494 INFO L137 encePairwiseOnDemand]: 291/299 looper letters, 72 selfloop transitions, 55 changer transitions 0/134 dead transitions. [2022-12-13 18:19:31,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 134 transitions, 1608 flow [2022-12-13 18:19:31,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:19:31,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 18:19:31,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 945 transitions. [2022-12-13 18:19:31,496 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.451505016722408 [2022-12-13 18:19:31,496 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 945 transitions. [2022-12-13 18:19:31,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 945 transitions. [2022-12-13 18:19:31,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:19:31,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 945 transitions. [2022-12-13 18:19:31,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.0) internal successors, (945), 7 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:31,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:31,499 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:31,499 INFO L175 Difference]: Start difference. First operand has 77 places, 100 transitions, 1150 flow. Second operand 7 states and 945 transitions. [2022-12-13 18:19:31,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 134 transitions, 1608 flow [2022-12-13 18:19:31,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 134 transitions, 1513 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-12-13 18:19:31,521 INFO L231 Difference]: Finished difference. Result has 81 places, 106 transitions, 1298 flow [2022-12-13 18:19:31,521 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1298, PETRI_PLACES=81, PETRI_TRANSITIONS=106} [2022-12-13 18:19:31,521 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2022-12-13 18:19:31,521 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 106 transitions, 1298 flow [2022-12-13 18:19:31,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 130.0) internal successors, (910), 7 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:31,522 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:19:31,522 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] [2022-12-13 18:19:31,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 18:19:31,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:19:31,724 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 18:19:31,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:19:31,725 INFO L85 PathProgramCache]: Analyzing trace with hash 2068576915, now seen corresponding path program 1 times [2022-12-13 18:19:31,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:19:31,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704785536] [2022-12-13 18:19:31,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:19:31,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:19:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:31,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:19:31,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:19:31,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704785536] [2022-12-13 18:19:31,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704785536] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:19:31,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253712464] [2022-12-13 18:19:31,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:19:31,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:19:31,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:19:31,909 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:19:31,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 18:19:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:31,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 18:19:31,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:19:32,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:19:32,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:19:32,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:19:32,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253712464] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 18:19:32,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:19:32,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2022-12-13 18:19:32,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202473763] [2022-12-13 18:19:32,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:19:32,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:19:32,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:19:32,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:19:32,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:19:32,071 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 299 [2022-12-13 18:19:32,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 106 transitions, 1298 flow. Second operand has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:32,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:19:32,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 299 [2022-12-13 18:19:32,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:19:32,234 INFO L130 PetriNetUnfolder]: 963/1421 cut-off events. [2022-12-13 18:19:32,234 INFO L131 PetriNetUnfolder]: For 12160/12383 co-relation queries the response was YES. [2022-12-13 18:19:32,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7889 conditions, 1421 events. 963/1421 cut-off events. For 12160/12383 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6154 event pairs, 278 based on Foata normal form. 225/1574 useless extension candidates. Maximal degree in co-relation 7847. Up to 1101 conditions per place. [2022-12-13 18:19:32,242 INFO L137 encePairwiseOnDemand]: 294/299 looper letters, 105 selfloop transitions, 11 changer transitions 0/129 dead transitions. [2022-12-13 18:19:32,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 129 transitions, 1753 flow [2022-12-13 18:19:32,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:19:32,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 18:19:32,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 699 transitions. [2022-12-13 18:19:32,244 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46755852842809364 [2022-12-13 18:19:32,244 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 699 transitions. [2022-12-13 18:19:32,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 699 transitions. [2022-12-13 18:19:32,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:19:32,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 699 transitions. [2022-12-13 18:19:32,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.8) internal successors, (699), 5 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:32,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:32,248 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:32,248 INFO L175 Difference]: Start difference. First operand has 81 places, 106 transitions, 1298 flow. Second operand 5 states and 699 transitions. [2022-12-13 18:19:32,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 129 transitions, 1753 flow [2022-12-13 18:19:32,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 129 transitions, 1626 flow, removed 21 selfloop flow, removed 4 redundant places. [2022-12-13 18:19:32,263 INFO L231 Difference]: Finished difference. Result has 82 places, 107 transitions, 1228 flow [2022-12-13 18:19:32,264 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=1183, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1228, PETRI_PLACES=82, PETRI_TRANSITIONS=107} [2022-12-13 18:19:32,264 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2022-12-13 18:19:32,264 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 107 transitions, 1228 flow [2022-12-13 18:19:32,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:32,264 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:19:32,265 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] [2022-12-13 18:19:32,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 18:19:32,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 18:19:32,466 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 18:19:32,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:19:32,468 INFO L85 PathProgramCache]: Analyzing trace with hash -683046842, now seen corresponding path program 1 times [2022-12-13 18:19:32,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:19:32,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559834635] [2022-12-13 18:19:32,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:19:32,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:19:32,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:33,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:19:33,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:19:33,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559834635] [2022-12-13 18:19:33,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559834635] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:19:33,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315430736] [2022-12-13 18:19:33,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:19:33,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:19:33,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:19:33,387 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:19:33,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 18:19:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:33,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-13 18:19:33,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:19:33,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:19:33,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 18:19:33,827 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:19:33,829 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 18:19:33,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2022-12-13 18:19:33,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:19:33,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:19:34,133 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 18:19:34,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 52 [2022-12-13 18:19:34,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2022-12-13 18:19:34,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:19:34,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315430736] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:19:34,505 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:19:34,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 27 [2022-12-13 18:19:34,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679584931] [2022-12-13 18:19:34,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:19:34,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-13 18:19:34,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:19:34,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-13 18:19:34,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=673, Unknown=1, NotChecked=0, Total=812 [2022-12-13 18:19:36,071 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 299 [2022-12-13 18:19:36,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 107 transitions, 1228 flow. Second operand has 29 states, 29 states have (on average 83.37931034482759) internal successors, (2418), 29 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:36,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:19:36,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 299 [2022-12-13 18:19:36,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:19:41,190 INFO L130 PetriNetUnfolder]: 3531/5322 cut-off events. [2022-12-13 18:19:41,190 INFO L131 PetriNetUnfolder]: For 35596/35596 co-relation queries the response was YES. [2022-12-13 18:19:41,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29258 conditions, 5322 events. 3531/5322 cut-off events. For 35596/35596 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 28464 event pairs, 149 based on Foata normal form. 6/5328 useless extension candidates. Maximal degree in co-relation 26651. Up to 2405 conditions per place. [2022-12-13 18:19:41,229 INFO L137 encePairwiseOnDemand]: 286/299 looper letters, 335 selfloop transitions, 348 changer transitions 7/690 dead transitions. [2022-12-13 18:19:41,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 690 transitions, 8253 flow [2022-12-13 18:19:41,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-13 18:19:41,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-12-13 18:19:41,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 3601 transitions. [2022-12-13 18:19:41,235 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3010869565217391 [2022-12-13 18:19:41,235 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 3601 transitions. [2022-12-13 18:19:41,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 3601 transitions. [2022-12-13 18:19:41,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:19:41,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 3601 transitions. [2022-12-13 18:19:41,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 90.025) internal successors, (3601), 40 states have internal predecessors, (3601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:41,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 299.0) internal successors, (12259), 41 states have internal predecessors, (12259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:41,255 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 299.0) internal successors, (12259), 41 states have internal predecessors, (12259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:41,255 INFO L175 Difference]: Start difference. First operand has 82 places, 107 transitions, 1228 flow. Second operand 40 states and 3601 transitions. [2022-12-13 18:19:41,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 690 transitions, 8253 flow [2022-12-13 18:19:41,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 690 transitions, 8207 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-12-13 18:19:41,317 INFO L231 Difference]: Finished difference. Result has 138 places, 414 transitions, 6114 flow [2022-12-13 18:19:41,318 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=1211, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=6114, PETRI_PLACES=138, PETRI_TRANSITIONS=414} [2022-12-13 18:19:41,318 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 108 predicate places. [2022-12-13 18:19:41,318 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 414 transitions, 6114 flow [2022-12-13 18:19:41,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 83.37931034482759) internal successors, (2418), 29 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:41,319 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:19:41,319 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] [2022-12-13 18:19:41,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 18:19:41,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:19:41,521 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 18:19:41,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:19:41,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1870622206, now seen corresponding path program 1 times [2022-12-13 18:19:41,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:19:41,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980144275] [2022-12-13 18:19:41,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:19:41,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:19:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:41,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:19:41,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:19:41,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980144275] [2022-12-13 18:19:41,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980144275] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:19:41,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370185528] [2022-12-13 18:19:41,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:19:41,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:19:41,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:19:41,925 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:19:41,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 18:19:41,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:42,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 40 conjunts are in the unsatisfiable core [2022-12-13 18:19:42,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:19:42,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 18:19:42,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 18:19:42,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 18:19:42,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 18:19:42,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-12-13 18:19:42,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:19:42,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:19:42,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:19:42,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370185528] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:19:42,389 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:19:42,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 4] total 15 [2022-12-13 18:19:42,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437069129] [2022-12-13 18:19:42,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:19:42,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 18:19:42,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:19:42,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 18:19:42,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2022-12-13 18:19:42,911 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 299 [2022-12-13 18:19:42,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 414 transitions, 6114 flow. Second operand has 17 states, 17 states have (on average 121.41176470588235) internal successors, (2064), 17 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:42,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:19:42,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 299 [2022-12-13 18:19:42,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:19:44,105 INFO L130 PetriNetUnfolder]: 4399/6628 cut-off events. [2022-12-13 18:19:44,105 INFO L131 PetriNetUnfolder]: For 80471/81111 co-relation queries the response was YES. [2022-12-13 18:19:44,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44427 conditions, 6628 events. 4399/6628 cut-off events. For 80471/81111 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 37616 event pairs, 473 based on Foata normal form. 542/7043 useless extension candidates. Maximal degree in co-relation 43692. Up to 4736 conditions per place. [2022-12-13 18:19:44,153 INFO L137 encePairwiseOnDemand]: 289/299 looper letters, 323 selfloop transitions, 260 changer transitions 1/602 dead transitions. [2022-12-13 18:19:44,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 602 transitions, 9766 flow [2022-12-13 18:19:44,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:19:44,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 18:19:44,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1034 transitions. [2022-12-13 18:19:44,155 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4322742474916388 [2022-12-13 18:19:44,155 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1034 transitions. [2022-12-13 18:19:44,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1034 transitions. [2022-12-13 18:19:44,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:19:44,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1034 transitions. [2022-12-13 18:19:44,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.25) internal successors, (1034), 8 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:44,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 299.0) internal successors, (2691), 9 states have internal predecessors, (2691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:44,158 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 299.0) internal successors, (2691), 9 states have internal predecessors, (2691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:44,158 INFO L175 Difference]: Start difference. First operand has 138 places, 414 transitions, 6114 flow. Second operand 8 states and 1034 transitions. [2022-12-13 18:19:44,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 602 transitions, 9766 flow [2022-12-13 18:19:44,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 602 transitions, 8957 flow, removed 367 selfloop flow, removed 3 redundant places. [2022-12-13 18:19:44,397 INFO L231 Difference]: Finished difference. Result has 145 places, 530 transitions, 7941 flow [2022-12-13 18:19:44,397 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=5553, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7941, PETRI_PLACES=145, PETRI_TRANSITIONS=530} [2022-12-13 18:19:44,398 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 115 predicate places. [2022-12-13 18:19:44,398 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 530 transitions, 7941 flow [2022-12-13 18:19:44,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 121.41176470588235) internal successors, (2064), 17 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:44,398 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:19:44,398 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] [2022-12-13 18:19:44,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 18:19:44,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 18:19:44,600 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 18:19:44,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:19:44,601 INFO L85 PathProgramCache]: Analyzing trace with hash 2075061782, now seen corresponding path program 2 times [2022-12-13 18:19:44,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:19:44,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620218257] [2022-12-13 18:19:44,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:19:44,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:19:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:45,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:19:45,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:19:45,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620218257] [2022-12-13 18:19:45,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620218257] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:19:45,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976868809] [2022-12-13 18:19:45,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:19:45,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:19:45,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:19:45,224 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:19:45,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 18:19:45,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:19:45,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:19:45,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-13 18:19:45,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:19:45,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:19:45,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 18:19:45,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-12-13 18:19:45,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:19:45,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:19:45,593 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_527 (Array Int Int))) (= (mod (+ c_~sum3~0 c_~sum2~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_527) c_~A~0.base) c_~A~0.offset)) 4294967296) (mod c_~sum1~0 4294967296))) is different from false [2022-12-13 18:19:45,606 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 18:19:45,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 46 [2022-12-13 18:19:45,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-12-13 18:19:45,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-12-13 18:19:45,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976868809] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:19:45,737 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:19:45,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 21 [2022-12-13 18:19:45,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989030980] [2022-12-13 18:19:45,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:19:45,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 18:19:45,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:19:45,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 18:19:45,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=365, Unknown=1, NotChecked=40, Total=506 [2022-12-13 18:19:45,857 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 299 [2022-12-13 18:19:45,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 530 transitions, 7941 flow. Second operand has 23 states, 23 states have (on average 98.78260869565217) internal successors, (2272), 23 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:45,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:19:45,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 299 [2022-12-13 18:19:45,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:19:47,334 INFO L130 PetriNetUnfolder]: 4681/7052 cut-off events. [2022-12-13 18:19:47,334 INFO L131 PetriNetUnfolder]: For 86993/87612 co-relation queries the response was YES. [2022-12-13 18:19:47,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47971 conditions, 7052 events. 4681/7052 cut-off events. For 86993/87612 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 40573 event pairs, 482 based on Foata normal form. 509/7376 useless extension candidates. Maximal degree in co-relation 47905. Up to 4313 conditions per place. [2022-12-13 18:19:47,396 INFO L137 encePairwiseOnDemand]: 290/299 looper letters, 257 selfloop transitions, 352 changer transitions 1/628 dead transitions. [2022-12-13 18:19:47,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 628 transitions, 10261 flow [2022-12-13 18:19:47,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:19:47,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 18:19:47,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 858 transitions. [2022-12-13 18:19:47,398 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.358695652173913 [2022-12-13 18:19:47,398 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 858 transitions. [2022-12-13 18:19:47,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 858 transitions. [2022-12-13 18:19:47,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:19:47,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 858 transitions. [2022-12-13 18:19:47,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 107.25) internal successors, (858), 8 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:47,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 299.0) internal successors, (2691), 9 states have internal predecessors, (2691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:47,402 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 299.0) internal successors, (2691), 9 states have internal predecessors, (2691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:47,402 INFO L175 Difference]: Start difference. First operand has 145 places, 530 transitions, 7941 flow. Second operand 8 states and 858 transitions. [2022-12-13 18:19:47,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 628 transitions, 10261 flow [2022-12-13 18:19:47,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 628 transitions, 10132 flow, removed 10 selfloop flow, removed 3 redundant places. [2022-12-13 18:19:47,653 INFO L231 Difference]: Finished difference. Result has 151 places, 566 transitions, 9255 flow [2022-12-13 18:19:47,653 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=7812, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=316, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9255, PETRI_PLACES=151, PETRI_TRANSITIONS=566} [2022-12-13 18:19:47,654 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2022-12-13 18:19:47,654 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 566 transitions, 9255 flow [2022-12-13 18:19:47,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 98.78260869565217) internal successors, (2272), 23 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:47,654 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:19:47,655 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] [2022-12-13 18:19:47,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 18:19:47,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 18:19:47,856 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 18:19:47,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:19:47,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1346378748, now seen corresponding path program 3 times [2022-12-13 18:19:47,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:19:47,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752532744] [2022-12-13 18:19:47,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:19:47,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:19:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:48,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:19:48,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:19:48,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752532744] [2022-12-13 18:19:48,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752532744] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:19:48,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793385822] [2022-12-13 18:19:48,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 18:19:48,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:19:48,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:19:48,187 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:19:48,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 18:19:48,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 18:19:48,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:19:48,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 18:19:48,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:19:48,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-12-13 18:19:48,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:19:48,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:19:48,453 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 18:19:48,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 25 [2022-12-13 18:19:48,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:19:48,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793385822] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:19:48,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:19:48,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 11 [2022-12-13 18:19:48,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515075495] [2022-12-13 18:19:48,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:19:48,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 18:19:48,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:19:48,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 18:19:48,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-12-13 18:19:48,725 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 299 [2022-12-13 18:19:48,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 566 transitions, 9255 flow. Second operand has 13 states, 13 states have (on average 131.15384615384616) internal successors, (1705), 13 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:48,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:19:48,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 299 [2022-12-13 18:19:48,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:19:50,113 INFO L130 PetriNetUnfolder]: 5012/7581 cut-off events. [2022-12-13 18:19:50,113 INFO L131 PetriNetUnfolder]: For 109771/110508 co-relation queries the response was YES. [2022-12-13 18:19:50,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55213 conditions, 7581 events. 5012/7581 cut-off events. For 109771/110508 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 44499 event pairs, 921 based on Foata normal form. 603/7952 useless extension candidates. Maximal degree in co-relation 55144. Up to 6590 conditions per place. [2022-12-13 18:19:50,174 INFO L137 encePairwiseOnDemand]: 291/299 looper letters, 481 selfloop transitions, 182 changer transitions 1/682 dead transitions. [2022-12-13 18:19:50,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 682 transitions, 12166 flow [2022-12-13 18:19:50,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:19:50,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 18:19:50,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 970 transitions. [2022-12-13 18:19:50,176 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4634495938843765 [2022-12-13 18:19:50,176 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 970 transitions. [2022-12-13 18:19:50,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 970 transitions. [2022-12-13 18:19:50,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:19:50,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 970 transitions. [2022-12-13 18:19:50,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 138.57142857142858) internal successors, (970), 7 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:50,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:50,179 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:50,179 INFO L175 Difference]: Start difference. First operand has 151 places, 566 transitions, 9255 flow. Second operand 7 states and 970 transitions. [2022-12-13 18:19:50,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 682 transitions, 12166 flow [2022-12-13 18:19:50,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 682 transitions, 11712 flow, removed 18 selfloop flow, removed 4 redundant places. [2022-12-13 18:19:50,525 INFO L231 Difference]: Finished difference. Result has 156 places, 627 transitions, 10492 flow [2022-12-13 18:19:50,526 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=8867, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10492, PETRI_PLACES=156, PETRI_TRANSITIONS=627} [2022-12-13 18:19:50,526 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 126 predicate places. [2022-12-13 18:19:50,526 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 627 transitions, 10492 flow [2022-12-13 18:19:50,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.15384615384616) internal successors, (1705), 13 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:50,526 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:19:50,526 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] [2022-12-13 18:19:50,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 18:19:50,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 18:19:50,728 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 18:19:50,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:19:50,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1710398454, now seen corresponding path program 4 times [2022-12-13 18:19:50,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:19:50,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883678804] [2022-12-13 18:19:50,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:19:50,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:19:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:51,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:19:51,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:19:51,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883678804] [2022-12-13 18:19:51,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883678804] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:19:51,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636558418] [2022-12-13 18:19:51,297 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 18:19:51,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:19:51,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:19:51,298 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:19:51,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 18:19:51,370 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 18:19:51,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:19:51,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 40 conjunts are in the unsatisfiable core [2022-12-13 18:19:51,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:19:51,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 18:19:51,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 18:19:51,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 18:19:51,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 18:19:51,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-12-13 18:19:51,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:19:51,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:19:51,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:19:51,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636558418] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:19:51,691 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:19:51,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 4] total 18 [2022-12-13 18:19:51,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3778289] [2022-12-13 18:19:51,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:19:51,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 18:19:51,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:19:51,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 18:19:51,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2022-12-13 18:19:52,392 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 299 [2022-12-13 18:19:52,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 627 transitions, 10492 flow. Second operand has 20 states, 20 states have (on average 121.0) internal successors, (2420), 20 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:52,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:19:52,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 299 [2022-12-13 18:19:52,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:19:53,947 INFO L130 PetriNetUnfolder]: 5150/7794 cut-off events. [2022-12-13 18:19:53,947 INFO L131 PetriNetUnfolder]: For 117420/118175 co-relation queries the response was YES. [2022-12-13 18:19:53,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56340 conditions, 7794 events. 5150/7794 cut-off events. For 117420/118175 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 46077 event pairs, 972 based on Foata normal form. 611/8156 useless extension candidates. Maximal degree in co-relation 56269. Up to 7219 conditions per place. [2022-12-13 18:19:53,996 INFO L137 encePairwiseOnDemand]: 290/299 looper letters, 546 selfloop transitions, 112 changer transitions 1/677 dead transitions. [2022-12-13 18:19:53,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 677 transitions, 12266 flow [2022-12-13 18:19:53,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:19:53,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 18:19:53,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1021 transitions. [2022-12-13 18:19:53,998 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42683946488294316 [2022-12-13 18:19:53,998 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1021 transitions. [2022-12-13 18:19:53,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1021 transitions. [2022-12-13 18:19:53,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:19:53,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1021 transitions. [2022-12-13 18:19:53,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 127.625) internal successors, (1021), 8 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:54,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 299.0) internal successors, (2691), 9 states have internal predecessors, (2691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:54,001 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 299.0) internal successors, (2691), 9 states have internal predecessors, (2691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:54,001 INFO L175 Difference]: Start difference. First operand has 156 places, 627 transitions, 10492 flow. Second operand 8 states and 1021 transitions. [2022-12-13 18:19:54,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 677 transitions, 12266 flow [2022-12-13 18:19:54,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 677 transitions, 12066 flow, removed 20 selfloop flow, removed 2 redundant places. [2022-12-13 18:19:54,428 INFO L231 Difference]: Finished difference. Result has 163 places, 638 transitions, 10683 flow [2022-12-13 18:19:54,429 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=10292, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=518, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10683, PETRI_PLACES=163, PETRI_TRANSITIONS=638} [2022-12-13 18:19:54,429 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 133 predicate places. [2022-12-13 18:19:54,429 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 638 transitions, 10683 flow [2022-12-13 18:19:54,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 121.0) internal successors, (2420), 20 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:54,430 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:19:54,430 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] [2022-12-13 18:19:54,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 18:19:54,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 18:19:54,631 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 18:19:54,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:19:54,632 INFO L85 PathProgramCache]: Analyzing trace with hash -311012092, now seen corresponding path program 2 times [2022-12-13 18:19:54,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:19:54,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213170701] [2022-12-13 18:19:54,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:19:54,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:19:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:55,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:19:55,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:19:55,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213170701] [2022-12-13 18:19:55,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213170701] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:19:55,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241197862] [2022-12-13 18:19:55,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:19:55,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:19:55,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:19:55,210 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:19:55,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 18:19:55,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:19:55,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:19:55,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-13 18:19:55,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:19:55,510 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:19:55,511 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 18:19:55,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2022-12-13 18:19:55,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:19:55,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:19:55,661 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 18:19:55,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 25 [2022-12-13 18:19:55,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:19:55,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241197862] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:19:55,990 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:19:55,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 22 [2022-12-13 18:19:55,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299663935] [2022-12-13 18:19:55,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:19:55,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 18:19:55,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:19:55,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 18:19:55,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2022-12-13 18:19:57,262 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 299 [2022-12-13 18:19:57,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 638 transitions, 10683 flow. Second operand has 24 states, 24 states have (on average 116.5) internal successors, (2796), 24 states have internal predecessors, (2796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:57,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:19:57,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 299 [2022-12-13 18:19:57,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:19:59,549 INFO L130 PetriNetUnfolder]: 5642/8638 cut-off events. [2022-12-13 18:19:59,549 INFO L131 PetriNetUnfolder]: For 112155/112442 co-relation queries the response was YES. [2022-12-13 18:19:59,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61200 conditions, 8638 events. 5642/8638 cut-off events. For 112155/112442 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 52215 event pairs, 768 based on Foata normal form. 264/8852 useless extension candidates. Maximal degree in co-relation 61126. Up to 6400 conditions per place. [2022-12-13 18:19:59,605 INFO L137 encePairwiseOnDemand]: 289/299 looper letters, 448 selfloop transitions, 316 changer transitions 8/797 dead transitions. [2022-12-13 18:19:59,605 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 797 transitions, 13911 flow [2022-12-13 18:19:59,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 18:19:59,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-13 18:19:59,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1965 transitions. [2022-12-13 18:19:59,607 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41074414715719065 [2022-12-13 18:19:59,608 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1965 transitions. [2022-12-13 18:19:59,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1965 transitions. [2022-12-13 18:19:59,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:19:59,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1965 transitions. [2022-12-13 18:19:59,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 122.8125) internal successors, (1965), 16 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:59,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 299.0) internal successors, (5083), 17 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:59,613 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 299.0) internal successors, (5083), 17 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:19:59,613 INFO L175 Difference]: Start difference. First operand has 163 places, 638 transitions, 10683 flow. Second operand 16 states and 1965 transitions. [2022-12-13 18:19:59,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 797 transitions, 13911 flow [2022-12-13 18:20:00,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 797 transitions, 13716 flow, removed 26 selfloop flow, removed 4 redundant places. [2022-12-13 18:20:00,095 INFO L231 Difference]: Finished difference. Result has 180 places, 707 transitions, 12410 flow [2022-12-13 18:20:00,095 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=10508, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=12410, PETRI_PLACES=180, PETRI_TRANSITIONS=707} [2022-12-13 18:20:00,096 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 150 predicate places. [2022-12-13 18:20:00,096 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 707 transitions, 12410 flow [2022-12-13 18:20:00,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 116.5) internal successors, (2796), 24 states have internal predecessors, (2796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:20:00,096 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:20:00,096 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] [2022-12-13 18:20:00,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-13 18:20:00,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:20:00,298 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 18:20:00,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:20:00,299 INFO L85 PathProgramCache]: Analyzing trace with hash 170106268, now seen corresponding path program 5 times [2022-12-13 18:20:00,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:20:00,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908334877] [2022-12-13 18:20:00,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:20:00,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:20:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:00,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:20:00,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:20:00,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908334877] [2022-12-13 18:20:00,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908334877] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:20:00,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592140547] [2022-12-13 18:20:00,693 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 18:20:00,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:20:00,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:20:00,695 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:20:00,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 18:20:00,760 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:20:00,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:20:00,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-13 18:20:00,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:20:00,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:20:00,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 18:20:00,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-12-13 18:20:00,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:20:00,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:20:01,030 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 18:20:01,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 52 [2022-12-13 18:20:01,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2022-12-13 18:20:01,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:20:01,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592140547] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:20:01,367 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:20:01,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2022-12-13 18:20:01,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276435074] [2022-12-13 18:20:01,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:20:01,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-13 18:20:01,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:20:01,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-13 18:20:01,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=352, Unknown=2, NotChecked=0, Total=462 [2022-12-13 18:20:02,127 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 299 [2022-12-13 18:20:02,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 707 transitions, 12410 flow. Second operand has 22 states, 22 states have (on average 109.95454545454545) internal successors, (2419), 22 states have internal predecessors, (2419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:20:02,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:20:02,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 299 [2022-12-13 18:20:02,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:20:04,129 INFO L130 PetriNetUnfolder]: 5822/8825 cut-off events. [2022-12-13 18:20:04,129 INFO L131 PetriNetUnfolder]: For 148323/149129 co-relation queries the response was YES. [2022-12-13 18:20:04,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66426 conditions, 8825 events. 5822/8825 cut-off events. For 148323/149129 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 53243 event pairs, 1055 based on Foata normal form. 648/9262 useless extension candidates. Maximal degree in co-relation 66345. Up to 8101 conditions per place. [2022-12-13 18:20:04,188 INFO L137 encePairwiseOnDemand]: 292/299 looper letters, 592 selfloop transitions, 140 changer transitions 1/756 dead transitions. [2022-12-13 18:20:04,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 756 transitions, 14383 flow [2022-12-13 18:20:04,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:20:04,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 18:20:04,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 825 transitions. [2022-12-13 18:20:04,190 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39417104634495936 [2022-12-13 18:20:04,190 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 825 transitions. [2022-12-13 18:20:04,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 825 transitions. [2022-12-13 18:20:04,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:20:04,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 825 transitions. [2022-12-13 18:20:04,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 117.85714285714286) internal successors, (825), 7 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:20:04,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:20:04,192 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:20:04,192 INFO L175 Difference]: Start difference. First operand has 180 places, 707 transitions, 12410 flow. Second operand 7 states and 825 transitions. [2022-12-13 18:20:04,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 756 transitions, 14383 flow [2022-12-13 18:20:04,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 756 transitions, 14250 flow, removed 50 selfloop flow, removed 4 redundant places. [2022-12-13 18:20:04,736 INFO L231 Difference]: Finished difference. Result has 184 places, 717 transitions, 12768 flow [2022-12-13 18:20:04,736 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=12279, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12768, PETRI_PLACES=184, PETRI_TRANSITIONS=717} [2022-12-13 18:20:04,736 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2022-12-13 18:20:04,736 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 717 transitions, 12768 flow [2022-12-13 18:20:04,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 109.95454545454545) internal successors, (2419), 22 states have internal predecessors, (2419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:20:04,737 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:20:04,737 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] [2022-12-13 18:20:04,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-13 18:20:04,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 18:20:04,938 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 18:20:04,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:20:04,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1394729928, now seen corresponding path program 6 times [2022-12-13 18:20:04,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:20:04,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250015397] [2022-12-13 18:20:04,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:20:04,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:20:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:05,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:20:05,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:20:05,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250015397] [2022-12-13 18:20:05,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250015397] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:20:05,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053172159] [2022-12-13 18:20:05,218 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 18:20:05,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:20:05,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:20:05,219 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:20:05,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 18:20:05,290 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-13 18:20:05,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:20:05,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-13 18:20:05,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:20:05,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:20:05,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 18:20:05,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-12-13 18:20:05,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:20:05,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:20:05,618 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 18:20:05,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 52 [2022-12-13 18:20:05,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2022-12-13 18:20:05,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:20:05,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053172159] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:20:05,770 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:20:05,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2022-12-13 18:20:05,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25692425] [2022-12-13 18:20:05,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:20:05,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-13 18:20:05,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:20:05,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-13 18:20:05,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=352, Unknown=1, NotChecked=0, Total=462 [2022-12-13 18:20:06,385 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 299 [2022-12-13 18:20:06,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 717 transitions, 12768 flow. Second operand has 22 states, 22 states have (on average 109.9090909090909) internal successors, (2418), 22 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:20:06,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:20:06,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 299 [2022-12-13 18:20:06,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:20:08,558 INFO L130 PetriNetUnfolder]: 5988/9093 cut-off events. [2022-12-13 18:20:08,558 INFO L131 PetriNetUnfolder]: For 158080/158999 co-relation queries the response was YES. [2022-12-13 18:20:08,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68828 conditions, 9093 events. 5988/9093 cut-off events. For 158080/158999 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 55445 event pairs, 1190 based on Foata normal form. 759/9653 useless extension candidates. Maximal degree in co-relation 68745. Up to 7750 conditions per place. [2022-12-13 18:20:08,627 INFO L137 encePairwiseOnDemand]: 292/299 looper letters, 535 selfloop transitions, 236 changer transitions 1/795 dead transitions. [2022-12-13 18:20:08,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 795 transitions, 15282 flow [2022-12-13 18:20:08,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:20:08,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 18:20:08,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 830 transitions. [2022-12-13 18:20:08,629 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3965599617773531 [2022-12-13 18:20:08,629 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 830 transitions. [2022-12-13 18:20:08,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 830 transitions. [2022-12-13 18:20:08,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:20:08,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 830 transitions. [2022-12-13 18:20:08,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 118.57142857142857) internal successors, (830), 7 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:20:08,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:20:08,631 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:20:08,631 INFO L175 Difference]: Start difference. First operand has 184 places, 717 transitions, 12768 flow. Second operand 7 states and 830 transitions. [2022-12-13 18:20:08,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 795 transitions, 15282 flow [2022-12-13 18:20:09,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 795 transitions, 15083 flow, removed 29 selfloop flow, removed 3 redundant places. [2022-12-13 18:20:09,246 INFO L231 Difference]: Finished difference. Result has 189 places, 740 transitions, 13653 flow [2022-12-13 18:20:09,247 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=12573, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=717, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13653, PETRI_PLACES=189, PETRI_TRANSITIONS=740} [2022-12-13 18:20:09,247 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 159 predicate places. [2022-12-13 18:20:09,247 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 740 transitions, 13653 flow [2022-12-13 18:20:09,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 109.9090909090909) internal successors, (2418), 22 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:20:09,247 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:20:09,248 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] [2022-12-13 18:20:09,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 18:20:09,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:20:09,449 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 18:20:09,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:20:09,450 INFO L85 PathProgramCache]: Analyzing trace with hash 875449458, now seen corresponding path program 7 times [2022-12-13 18:20:09,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:20:09,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080339591] [2022-12-13 18:20:09,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:20:09,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:20:09,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:09,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:20:09,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:20:09,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080339591] [2022-12-13 18:20:09,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080339591] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:20:09,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175669352] [2022-12-13 18:20:09,864 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 18:20:09,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:20:09,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:20:09,865 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:20:09,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c306c14-087e-4817-8426-4410b332710a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 18:20:09,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:09,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 40 conjunts are in the unsatisfiable core [2022-12-13 18:20:09,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:20:09,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 18:20:10,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 18:20:10,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:20:10,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 18:20:10,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:20:10,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 18:20:10,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 18:20:10,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:20:10,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:20:10,294 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_803 (Array Int Int))) (= (mod (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_803) c_~A~0.base) c_~A~0.offset) c_~sum3~0 c_~sum2~0) 4294967296) (mod c_~sum1~0 4294967296))) is different from false [2022-12-13 18:20:10,426 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_803 (Array Int Int)) (v_ArrVal_802 (Array Int Int))) (= (mod (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_802) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_803) c_~A~0.base) c_~A~0.offset) c_~sum3~0 c_~sum2~0) 4294967296) (mod (+ (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset) c_~sum1~0) 4294967296))) is different from false [2022-12-13 18:20:10,439 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_801 (Array Int Int)) (v_ArrVal_803 (Array Int Int)) (v_ArrVal_802 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_801))) (= (mod (+ (select (select .cse0 |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) c_~sum1~0) 4294967296) (mod (+ c_~sum3~0 c_~sum2~0 (select (select (store (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_802) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_803) |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|)) 4294967296)))) is different from false [2022-12-13 18:20:10,448 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 18:20:10,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 45 [2022-12-13 18:20:10,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 862 treesize of output 782 [2022-12-13 18:20:10,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 782 treesize of output 766 [2022-12-13 18:20:10,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 766 treesize of output 726 [2022-12-13 18:20:10,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 726 treesize of output 694